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19-0248; Rev 0; 7/05
KIT ATION EVALU ILABLE AVA
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
General Description
The MAX2031 high-linearity passive upconverter or downconverter mixer is designed to provide +36dBm IIP3, 7dB NF, and 7dB conversion loss for an 815MHz to 1000MHz RF frequency range to support GSM/cellular base-station transmitter or receiver applications. With a 960MHz to 1180MHz LO frequency range, this particular mixer is ideal for high-side LO injection architectures. For a pin-to-pin-compatible mixer meant for low-side LO injection, contact the factory. In addition to offering excellent linearity and noise performance, the MAX2031 also yields a high level of component integration. This device includes a doublebalanced passive mixer core, a dual-input LO selectable switch, and an LO buffer. On-chip baluns are also integrated to allow for a single-ended RF input for downconversion (or RF output for upconversion), and single-ended LO inputs. The MAX2031 requires a nominal LO drive of 0dBm, and supply current is guaranteed to be below 100mA. The MAX2031 is pin compatible with the MAX2039/ MAX2041* 1700MHz to 2200MHz mixers, making this family of passive upconverters and downconverters ideal for applications where a common PC board layout is used for both frequency bands. The MAX2031 is available in a compact 20-pin thin QFN package (5mm x 5mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40C to +85C temperature range.
Features
o 815MHz to 1000MHz RF Frequency Range o 960MHz to 1180MHz LO Frequency Range o 325MHz to 850MHz LO Frequency Range (Contact Factory) o DC to 250MHz IF Frequency Range o 7dB Conversion Loss o +36dBm Input IP3 o +27dBm Input 1dB Compression Point o 7dB Noise Figure o Integrated LO Buffer o Integrated RF and LO Baluns o Low -3dBm to +3dBm LO Drive o Built-In SPDT LO Switch with 49dB LO1 to LO2 Isolation and 50ns Switching Time o Pin Compatible with the MAX2039/MAX2041 1700MHz to 2200MHz Mixers o External Current-Setting Resistor Provides Option for Operating Mixer in Reduced-Power/ReducedPerformance Mode o Lead-Free Package Available
Ordering Information
PART MAX2031ETP/-T TEMP RANGE PIN-PACKAGE -40C to +85C PKG CODE
Applications
Cellular Band WCDMA and cdma2000 (R) Base Stations GSM 850/GSM 900 2G and 2.5G EDGE Base Stations Integrated Digital Enhanced Network (iDEN(R)) Base Stations WiMAX(SM) Base Stations and Customer Premise Equipment Predistortion Receivers Microwave and Fixed Broadband Wireless Access Wireless Local Loop Digital and SpreadSpectrum Communication Systems
MAX2031ETP+/+T -40C to +85C
20 Thin QFN-EP** T2055-3 (5mm x 5mm) 20 Thin QFN-EP** T2055-3 (5mm x 5mm)
**EP = Exposed paddle. +Denotes lead-free package.
Pin Configuration/ Functional Diagram
GND GND 17
TOP VIEW
20
19
18
16
VCC RF TAP
GND
IF+
IF-
1 2 3 4 E.P. 5
15
LO2 VCC GND GND LO1
MAX2031
14 13 12 11
*Future product--contact factory for availability. cdma2000 is a registered trademark of Telecommunications Industry Association. iDEN is a registered trademark of Motorola, Inc. WiMAX is a service mark of Bandwidth.com, Inc.
GND GND
6 VCC
7 LOBIAS
8 VCC
9 LOSEL
10 GND
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
ABSOLUTE MAXIMUM RATINGS
VCC to GND ...........................................................-0.3V to +5.5V RF (RF is DC shorted to GND through a balun)..................50mA LO1, LO2 to GND ..................................................-0.3V to +0.3V IF+, IF- to GND ...........................................-0.3V to (VCC + 0.3V) TAP to GND ...........................................................-0.3V to +1.4V LOSEL to GND ...........................................-0.3V to (VCC + 0.3V) LOBIAS to GND..........................................-0.3V to (VCC + 0.3V) RF, LO1, LO2 Input Power* ............................................+20dBm Continuous Power Dissipation (TA = +70C) 20-Pin Thin QFN-EP (derate 26.3mW/C above +70C) ....2.1W jA ..................................................................................+38C/W jC ..................................................................................+13C/W Operating Temperature Range (Note A).....TC = -40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
Note A: TC is the temperature on the exposed paddle of the package. *Maximum reliable continuous input power applied to the RF and IF port of this device is +12dBm from a 50 source.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, VCC = +4.75V to +5.25V, no RF signals applied, TC = -40C to +85C. IF+ and IF- are DC grounded through an IF balun. Typical values are at VCC = +5V, TC = +25C, unless otherwise noted.)
PARAMETER Supply Voltage Supply Current LOSEL Input-Logic Low LOSEL Input-Logic High SYMBOL VCC ICC VIL VIH 2 CONDITIONS MIN 4.75 TYP 5.00 85 MAX 5.25 100 0.8 UNITS V mA V V
AC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, C5 = 2pF, L1 and C4 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50 sources, PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 815MHz to 1000MHz, fLO = 960MHz to 1180MHz, fIF = 160MHz, fLO > fRF, TC = -40C to +85C, unless otherwise noted. Typical values are at VCC = +5V, PLO = 0dBm, fRF = 910MHz, fLO = 1070MHz, fIF = 160MHz, TC = +25C, unless otherwise noted.) (Note 1)
PARAMETER RF Frequency Range LO Frequency Range IF Frequency Range LO Drive LO1-to-LO2 Isolation (Note 3) Maximum LO Leakage at RF Port Maximum LO Leakage at IF Port LO Switching Time Minimum RF-to-IF Isolation RF Port Return Loss LO1/LO2 port selected, LO2/LO1, RF, and IF terminated into 50 LO Port Return Loss LO1/LO2 port unselected, LO2/LO1, RF, and IF terminated into 50 LO driven at 0dBm, RF terminated into 50 SYMBOL fRF fLO fIF PLO (Note 2) (Note 2) Contact factory External IF transformer dependence (Note 2) (Note 2) LO2 selected, PLO = +3dBm, TC = +25C LO1 selected, PLO = +3dBm, TC = +25C PLO = +3dBm PLO = +3dBm 50% of LOSEL to IF, settled within 2 degrees CONDITIONS MIN 815 960 325 DC -3 42 42 51 49 -27 -35 50 45 17 28 dB 30 17 dB TYP MAX 1000 1180 850 250 +3 UNITS MHz MHz MHz dBm dB dBm dBm ns dB dB
IF Port Return Loss
2
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High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch
AC ELECTRICAL CHARACTERISTICS (DOWNCONVERTER OPERATION)
(Typical Application Circuit, C5 = 2pF, L1 and C4 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50 sources, PLO = -3dBm to +3dBm, PRF = 0dBm, fRF = 815MHz to 1000MHz, fLO = 960MHz to 1180MHz, fIF = 160MHz, fLO > fRF, TC = -40C to +85C, unless otherwise noted. Typical values are at VCC = +5V, PLO = 0dBm, fRF = 910MHz, fLO = 1070MHz, fIF = 160MHz, TC = +25C, unless otherwise noted.) (Note 1)
PARAMETER Conversion Loss SYMBOL Lc Flatness over any one of three frequency bands (fIF = 160MHz): fRF = 827MHz to 849MHz fRF = 869MHz to 894MHz fRF = 880MHz to 915MHz TC = +25C to -40C TC = +25C to +85C P1dB IIP3 (Note 4) fRF1 = 910MHz, fRF2 = 911MHz, PRF = 0dBm/tone, fLO = 1070MHz, PLO = 0dBm, TC = +25C (Note 3) TC = +25C to -40C TC = +25C to +85C 2LO - 2RF 3LO - 3RF Single sideband PBLOCKER = +8dBm PBLOCKER = +12dBm 32 CONDITIONS MIN TYP 7.0 MAX UNITS dB
MAX2031
Conversion Loss Flatness
0.18
dB
Conversion Loss Variation Over Temperature Input Compression Point Input Third-Order Intercept Point Input IP3 Variation Over Temperature Spurious Response at IF Noise Figure Noise Figure Under Blocking (Note 5)
-0.3 0.2 27 36 0.3 -0.3 72 79 7.0 15 19
dB dBm dBm
IIP3 2x2 3x3 NF
dB dBc dB dB
AC ELECTRICAL CHARACTERISTICS (UPCONVERTER OPERATION)
(Typical Application Circuit, L1 = 4.7nH, C4 = 6pF, C5 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50 sources, PLO = -3dBm to +3dBm, PIF = 0dBm, fRF = 815MHz to 1000MHz, fLO = 960MHz to 1180MHz, fIF = 160MHz, fLO > fRF, TC = -40C to +85C, unless otherwise noted. Typical values are at VCC = +5V, PLO = 0dBm, fRF = 910MHz, fLO = 1070MHz, fIF = 160MHz, TC = +25C, unless otherwise noted.) (Note 1)
PARAMETER Conversion Loss SYMBOL Lc Flatness over any one of three frequency bands (fIF = 160MHz): fRF = 827MHz to 849MHz fRF = 869MHz to 894MHz fRF = 880MHz to 915MHz TC = +25C to -40C TC = +25C to +85C P1dB IIP3 (Note 4) fIF1 = 160MHz, fIF2 = 161MHz, PIF = 0dBm/tone, fLO = 1070MHz, PLO = 0dBm, TC = +25C (Note 3) TC = +25C to -40C TC = +25C to +85C 32 CONDITIONS MIN TYP 7.4 MAX UNITS dB
Conversion Loss Flatness
0.3
dB
Conversion Loss Variation Over Temperature Input Compression Point Input Third-Order Intercept Point Input IP3 Variation Over Temperature
-0.3 0.4 27 36 1.2 -0.9
dB dBm dBm
IIP3
dB
_______________________________________________________________________________________
3
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
AC ELECTRICAL CHARACTERISTICS (UPCONVERTER OPERATION) (continued)
(Typical Application Circuit, L1 = 4.7nH, C4 = 6pF, C5 not used, VCC = +4.75V to +5.25V, RF and LO ports are driven from 50 sources, PLO = -3dBm to +3dBm, PIF = 0dBm, fRF = 815MHz to 1000MHz, fLO = 960MHz to 1180MHz, fIF = 160MHz, fLO > fRF, TC = -40C to +85C, unless otherwise noted. Typical values are at VCC = +5V, PLO = 0dBm, fRF = 910MHz, fLO = 1070MHz, fIF = 160MHz, TC = +25C, unless otherwise noted.) (Note 1)
PARAMETER LO 2IF Spur LO 3IF Spur Output Noise Floor POUT = 0dBm (Note 5) SYMBOL CONDITIONS MIN TYP 64 83 -167 MAX UNITS dBc dBc dBm/Hz
Note 1: Note 2: Note 3: Note 4: Note 5:
All limits include external component losses. Output measurements are taken at IF or RF port of the Typical Application Circuit. Operation outside this range is possible, but with degraded performance of some parameters. Guaranteed by design. Compression point characterized. It is advisable not to continuously operate the mixer RF/IF inputs above +12dBm. Measured with external LO source noise filtered, so its noise floor is -174dBm/Hz. This specification reflects the effects of all SNR degradations in the mixer, including the LO noise as defined in Maxim Application Note 2021.
4
_______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Typical Operating Characteristics
(Typical Application Circuit, C5 = 2pF, L1 and C4 not used, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO > fRF, fIF = 160MHz, unless otherwise noted.)
Downconverter Curves
CONVERSION LOSS vs. RF FREQUENCY
MAX2031 toc01
CONVERSION LOSS vs. RF FREQUENCY
MAX2031 toc02
CONVERSION LOSS vs. RF FREQUENCY
MAX2031 toc03
10
10
10
9 CONVERSION LOSS (dB) TC = +85C TC = -25C TC = +25C
9 CONVERSION LOSS (dB) PLO = -3dBm, 0dBm, +3dBm
9 CONVERSION LOSS (dB) VCC = 4.75V, 5.0V, 5.25V
8
8
8
7
7
7
6
TC = -40C
6
6
5 800 850 900 950 1000 RF FREQUENCY (MHz)
5 800 850 900 950 1000 RF FREQUENCY (MHz)
5 800 850 900 950 1000 RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY
MAX2031 toc04
INPUT IP3 vs. RF FREQUENCY
MAX2031 toc05
INPUT IP3 vs. RF FREQUENCY
VCC = 5.25V 38 36 34 VCC = 4.75V 32 30 28 26 VCC = 5.0V
MAX2031 toc06
40 TC = +85C, +25C 38 36 34 TC = -40C 32 TC = -25C 30 28 26 800 850 900 950 RF FREQUENCY (MHz)
40 38 36 34 32 30 28 26 PLO = +3dBm PLO = 0dBm
40
INPUT IP3 (dBm)
INPUT IP3 (dBm)
PLO = -3dBm
1000
800
850 900 950 RF FREQUENCY (MHz)
1000
INPUT IP3 (dBm)
800
850 900 950 RF FREQUENCY (MHz)
1000
NOISE FIGURE vs. RF FREQUENCY
MAX2031 toc07
NOISE FIGURE vs. RF FREQUENCY
MAX2031 toc08
NOISE FIGURE vs. RF FREQUENCY
MAX2031 toc09
10
10
10
9 TC = +25C NOISE FIGURE (dB) 8 TC = +85C
9 NOISE FIGURE (dB)
9 NOISE FIGURE (dB)
8
8
7
7 PLO = -3dBm, 0dBm, +3dBm 6
7 VCC = 4.75V, 5.0V, 5.25V 6
6 TC = -40C 5 800 850 900 950 1000 RF FREQUENCY (MHz) TC = -25C
5 800 850 900 950 1000 RF FREQUENCY (MHz)
5 800 850 900 950 1000 RF FREQUENCY (MHz)
_______________________________________________________________________________________
5
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Typical Operating Characteristics (continued)
(Typical Application Circuit, C5 = 2pF, L1 and C4 not used, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO > fRF, fIF = 160MHz, unless otherwise noted.)
Downconverter Curves
2LO - 2RF RESPONSE vs. RF FREQUENCY
MAX2031 toc10
2LO - 2RF RESPONSE vs. RF FREQUENCY
MAX2031 toc11
2LO - 2RF RESPONSE vs. RF FREQUENCY
PRF = 0dBm VCC = 4.75V, 5.0V
MAX2031 toc12
95
95
PRF = 0dBm
TC = +25C
PRF = 0dBm
95
PLO = 0dBm P = -3dBm LO
2LO - 2RF RESPONSE (dBc)
2LO - 2RF RESPONSE (dBc)
TC = +85C 75
75
2LO - 2RF RESPONSE (dBc)
85
85
85
75
65 TC = -40C
65
TC = -25C
PLO = +3dBm
65
VCC = 5.25V
55
55
55
45 800 850 900 950 1000 RF FREQUENCY (MHz)
45 800 850 900 950 1000 RF FREQUENCY (MHz)
45 800 850 900 950 1000 RF FREQUENCY (MHz)
3LO - 3RF RESPONSE vs. RF FREQUENCY
MAX2031 toc13
3LO - 3RF RESPONSE vs. RF FREQUENCY
MAX2031 toc14
3LO - 3RF RESPONSE vs. RF FREQUENCY
PRF = 0dBm
MAX2031 toc15
100
PRF = 0dBm TC = +25C TC = +85C
100
PRF = 0dBm PLO = 0dBm
100
3LO - 3RF RESPONSE (dBc)
3LO - 3RF RESPONSE (dBc)
90
90
3LO - 3RF RESPONSE (dBc)
90
VCC = 5.25V
80
80
80 VCC = 5.0V 70 VCC = 4.75V
70 TC = -40C, -25C 60 800 850 900 950 1000 RF FREQUENCY (MHz)
70
PLO = -3dBm PLO = +3dBm
60 800 850 900 950 1000 RF FREQUENCY (MHz)
60 800 850 900 950 1000 RF FREQUENCY (MHz)
INPUT P1dB vs. RF FREQUENCY
MAX2031 toc16
INPUT P1dB vs. RF FREQUENCY
MAX2031 toc17
INPUT P1dB vs. RF FREQUENCY
MAX2031 toc18
32 TC = -40C 30 INPUT P1dB (dBm)
32
32 VCC = 5.25V 30 INPUT P1dB (dBm)
30 INPUT P1dB (dBm)
PLO = 0dBm, +3dBm
28 TC = -25C, +85C TC = +25C 26
28 PLO = -3dBm 26
28 VCC = 4.75V 26 VCC = 5.0V
24 800 850 900 950 1000 RF FREQUENCY (MHz)
24 800 850 900 950 1000 RF FREQUENCY (MHz)
24 800 850 900 950 1000 RF FREQUENCY (MHz)
6
_______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Typical Operating Characteristics (continued)
(Typical Application Circuit, C5 = 2pF, L1 and C4 not used, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO > fRF, fIF = 160MHz, unless otherwise noted.)
Downconverter Curves
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2031 toc19
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2031 toc20
LO SWITCH ISOLATION vs. LO FREQUENCY
MAX2031 toc21
60
60
60
LO SWITCH ISOLATION (dB)
LO SWITCH ISOLATION (dB)
55
TC = -40C, -25C
55
LO SWITCH ISOLATION (dB)
55
50 TC = +85C 45 TC = +25C
50 PLO = -3dBm, 0dBm, +3dBm 45
50
45
VCC = 4.75V, 5.0V, 5.25V
40 850 950 1050 1150 1250 LO FREQUENCY (MHz)
40 850 950 1050 1150 1250 LO FREQUENCY (MHz)
40 850 950 1050 1150 1250 LO FREQUENCY (MHz)
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
MAX2031 toc22
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
MAX2031 toc23
LO LEAKAGE AT IF PORT vs. LO FREQUENCY
MAX2031 toc24
-20 TC = -40C, -25C -30 LO LEAKAGE (dBm)
-20
-20 VCC = 5.25V -30 LO LEAKAGE (dBm)
-30 LO LEAKAGE (dBm)
-40
TC = +25C TC = +85C
-40 PLO = -3dBm, 0dBm, +3dBm -50
-40 VCC = 4.75V VCC = 5.0V -50
-50
-60 960 1010 1060 1110 1160 LO FREQUENCY (MHz)
-60 960 1010 1060 1110 1160 LO FREQUENCY (MHz)
-60 960 1010 1060 1110 1160 LO FREQUENCY (MHz)
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
MAX2031 toc25
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
MAX2031 toc26
LO LEAKAGE AT RF PORT vs. LO FREQUENCY
MAX2031 toc27
-15 -20 -25 -30 TC = +85C -35 -40 -45 850 950 1050 1150 TC = +25C TC = -40C, -25C
-15 -20 -25 -30 -35 -40 -45
-15 -20 VCC = 5.25V -25 -30 -35 -40 -45 VCC = 4.75V VCC = 5.0V
LO LEAKAGE AT RF PORT (dBm)
LO LEAKAGE AT RF PORT (dBm)
PLO = -3dBm, 0dBm, +3dBm
1250
850
950
1050
1150
1250
LO LEAKAGE AT RF PORT (dBm)
850
950
1050
1150
1250
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
_______________________________________________________________________________________
7
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Typical Operating Characteristics (continued)
(Typical Application Circuit, C5 = 2pF, L1 and C4 not used, VCC = +5.0V, PLO = 0dBm, PRF = 0dBm, fLO > fRF, fIF = 160MHz, unless otherwise noted.)
Downconverter Curves
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2031 toc28
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2031 toc29
RF-TO-IF ISOLATION vs. RF FREQUENCY
MAX2031 toc30
60 55 RF-TO-IF ISOLATION (dB) 50 45 40 35 30 800 850 900 950 TC = +85C TC = +25C
60 55 RF-TO-IF ISOLATION (dB) PLO = +3dBm 50 45 40 35 30 PLO = -3dBm PLO = 0dBm
60 55 RF-TO-IF ISOLATION (dB) 50 45 40 35 30 VCC = 4.75V, 5.0V, 5.25V
TC = -40C, -25C
1000
800
850
900
950
1000
800
850
900
950
1000
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
RF PORT RETURN LOSS vs. RF FREQUENCY
MAX2031 toc31
IF PORT RETURN LOSS vs. IF FREQUENCY
MAX2031 toc32
IF PORT RETURN LOSS vs. IF FREQUENCY
5 10 IF PORT RETURN LOSS (dB) 15 20 25 30 35 40 45 50 PLO = -3dBm, 0dBm, +3dBm INCLUDES IF TRANSFORMER
MAX2031 toc33
0 5 RF PORT RETURN LOSS (dB) 10 15 20 PLO = -3dBm, 0dBm, +3dBm 25 30 750 800 850 900 950 1000
0 5 10 IF PORT RETURN LOSS (dB) 15 20 25 30 35 40 45 50 VCC = 4.75V, 5.0V, 5.25V INCLUDES IF TRANSFORMER
0
1050
0
100
200
300
400
500
0
100
200
300
400
500
RF FREQUENCY (MHz)
IF FREQUENCY (MHz)
IF FREQUENCY (MHz)
LO SELECTED RETURN LOSS vs. LO FREQUENCY
MAX2031 toc34
LO UNSELECTED RETURN LOSS vs. LO FREQUENCY
MAX2031 toc35
SUPPLY CURRENT vs.TEMPERATURE (TC)
VCC = 5.25V SUPPLY CURRENT (mA) 90
MAX2031 toc36
0 5 LO SELECTED RETURN LOSS (dB) 10 15 20 25 30 35 40 800 900 1000 1100 1200 PLO = -3dBm PLO = +3dBm PLO = 0dBm
0 LO UNSELECTED RETURN LOSS (dB) 10 PLO = -3dBm, 0dBm, +3dBm 20 30 40 50 60
100
80 VCC = 5.0V 70 VCC = 4.75V
60 800 900 1000 1100 1200 1300 -40 -15 10 35 60 85 LO FREQUENCY (MHz) TEMPERATURE (C)
1300
LO FREQUENCY (MHz)
8
_______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Typical Operating Characteristics
(Typical Application Circuit, L1 = 4.7nH, C4 = 6pF, C5 not used, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO + fIF, fIF = 160MHz, unless otherwise noted.)
Upconverter Curves
CONVERSION LOSS vs. RF FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc01
CONVERSION LOSS vs. RF FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc02
CONVERSION LOSS vs. RF FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc03
9 TC = +25C 8 CONVERSION LOSS (dB) TC = +85C
9 8 CONVERSION LOSS (dB) 7 6 5 4 3 PLO = -3dBm, 0dBm, +3dBm
9 8 CONVERSION LOSS (dB) 7 6 5 4 3 VCC = 4.75V, 5.0V, 5.25V
7 TC = -25C TC = -40C 5
6
4 750 800 850 900 950 1000 1050 RF FREQUENCY (MHz)
750
800
850
900
950
1000
1050
750
800
850
900
950
1000
1050
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
INPUT IP3 vs. RF FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc04
INPUT IP3 vs. RF FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc05
INPUT IP3 vs. RF FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
VCC = 5.25V
MAX2031 toc06
39 37 35 INPUT IP3 (dBm)
TC = -25C T = -40C C
39 37 35 INPUT IP3 (dBm) 33 31 29 27 25
39 37 35 INPUT IP3 (dBm)
33 TC = +85C 31 29 27 25 750 800 850 900 950 1000 1050 RF FREQUENCY (MHz) TC = +25C
PLO = -3dBm, 0dBm, +3dBm
33 VCC = 4.75V 31 29 27 25 VCC = 5.0V
750
800
850
900
950
1000
1050
750
800
850
900
950
1000
1050
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
LO + 2IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc07
LO + 2IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc08
LO + 2IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
PIF = 0dBm VCC = 5.25V VCC = 5.0V
MAX2031 toc09
80 75 LO + 2IF REJECTION (dBc) 70 65 60 55 50
PIF = 0dBm
80 75 LO + 2IF REJECTION (dBc) 70 65 60 55 50
TC = -40C, -25C
TC = +25C
PIF = 0dBm
80 75 LO + 2IF REJECTION (dBc) 70 65 60 55 50
PLO = +3dBm
TC = +85C
PLO = -3dBm PLO = 0dBm
VCC = 4.75V
910
960
1010
1060
1110
1160
1210
910
960
1010
1060
1110
1160
1210
910
960
1010
1060
1110
1160
1210
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
_______________________________________________________________________________________
9
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Typical Operating Characteristics (continued)
(Typical Application Circuit, L1 = 4.7nH, C4 = 6pF, C5 not used, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO + fIF, fIF = 160MHz, unless otherwise noted.)
Upconverter Curves
LO - 2IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc10
LO - 2IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc11
LO - 2IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
PIF = 0dBm VCC = 5.25V
MAX2031 toc12
80 75 LO - 2IF REJECTION (dBc) 70 65
PIF = 0dBm
80 75 LO - 2IF REJECTION (dBc) 70 65 60
TC = -40C, -25C
PIF = 0dBm
80 75 LO - 2IF REJECTION (dBc) 70 65 60
TC = +85C
PLO = +3dBm
VCC = 5.0V
TC = +25C 60 55 50 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
PLO = -3dBm 55 50 910 960 1010
PLO = 0dBm
VCC = 4.75V 55 50
1060
1110
1160
1210
910
960
1010
1060
1110
1160
1210
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
LO + 3IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc13
LO + 3IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc14
LO + 3IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
PIF = 0dBm VCC = 5.25V
MAX2031 toc15
90
PIF = 0dBm
90
PIF = 0dBm
90
LO + 3IF REJECTION (dBc)
LO + 3IF REJECTION (dBc)
TC = -40C, -25C, +25C, +85C 70
PLO = -3dBm, 0dBm, +3dBm 70
LO + 3IF REJECTION (dBc)
80
80
80 VCC = 4.75V, 5.0V 70
60
60
60
50 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
50 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
50 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
LO - 3IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc16
LO - 3IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc17
LO - 3IF REJECTION vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
PIF = 0dBm VCC = 5.25V LO - 3IF REJECTION (dBc) 80 VCC = 4.75V 70 VCC = 5.0V 60
MAX2031 toc18
90
PIF = 0dBm
TC = -40C, -25C, +25C
90
PIF = 0dBm
90
LO - 3IF REJECTION (dBc)
LO - 3IF REJECTION (dBc)
80 TC = +85C 70
80 PLO = -3dBm, 0dBm, +3dBm 70
60
60
50 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
50 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
50 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
10
______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Typical Operating Characteristics (continued)
(Typical Application Circuit, L1 = 4.7nH, C4 = 6pF, C5 not used, VCC = +5.0V, PLO = 0dBm, PIF = 0dBm, fRF = fLO + fIF, fIF = 160MHz, unless otherwise noted.)
Upconverter Curves
LO LEAKAGE AT RF PORT vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc19
LO LEAKAGE AT RF PORT vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc20
LO LEAKAGE AT RF PORT vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc21
-15
-15
-15
LO LEAKAGE AT RF PORT (dBm)
LO LEAKAGE AT RF PORT (dBm)
-20
TC = -40C, -25C
-20
LO LEAKAGE AT RF PORT (dBm)
-20
VCC = 5.25V
-25
-25
-25
-30
TC = +85C
TC = +25C
-30
PLO = -3dBm, 0dBm, +3dBm
-30
VCC = 4.75V
VCC = 5.0V
-35 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
-35 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
-35 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
IF LEAKAGE AT RF vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc22
IF LEAKAGE AT RF vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc23
IF LEAKAGE AT RF vs. LO FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
MAX2031 toc24
-50 TC = +25C TC = -40C, -25C IF LEAKAGE (dBm)
-50 PLO = -3dBm -60 IF LEAKAGE (dBm) PLO = 0dBm -70 PLO = +3dBm -80
-50 VCC = 5.0V VCC = 5.25V
-60
-60 IF LEAKAGE (dBm)
-70 TC = +85C
-70 VCC = 4.75V -80
-80
-90
-90
-90
-100 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
-100 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
-100 910 960 1010 1060 1110 1160 1210 LO FREQUENCY (MHz)
RF PORT RETURN LOSS vs. RF FREQUENCY (L-C BPF TUNED FOR 810MHz RF FREQUENCY)
L1 AND C4 BPF REMOVED L1 AND C4 BPF INSTALLED
MAX2031 toc25
0 5 RF PORT RETURN LOSS (dB) 10 15 20 25 30 35 750 800 850 THE OPTIONAL L-C BPF ENHANCES PERFORMANCE IN THE UPCONVERTER MODE BUT LIMITS RF BANDWIDTH 900 950 1000
1050
RF FREQUENCY (MHz)
______________________________________________________________________________________
11
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Pin Description
PIN 1, 6, 8, 14 2 3 4, 5, 10, 12, 13, 16, 17, 20 7 9 11 15 18, 19 EP NAME VCC RF TAP GND FUNCTION Power-Supply Connection. Bypass each VCC pin to GND with capacitors as shown in the Typical Application Circuit. Single-Ended 50 RF Input/Output. This port is internally matched and DC shorted to GND through a balun. Center Tap of the Internal RF Balun. Connect to ground. Ground
LOBIAS Bias Resistor for Internal LO Buffer. Connect a 523 1% resistor from LOBIAS to the power supply. LOSEL LO1 LO2 IF-, IF+ GND Local Oscillator Select. Logic-control input for selecting LO1 or LO2. Local Oscillator Input 1. Drive LOSEL low to select LO1. Local Oscillator Input 2. Drive LOSEL high to select LO2. Differential IF Input/Outputs Exposed Ground Paddle. Solder the exposed paddle to the ground plane using multiple vias.
Detailed Description
The MAX2031 can operate either as a downconverter or an upconverter mixer that provides approximately 7dB of conversion loss with a typical 7dB noise figure. IIP3 is +36dBm for both upconversion and downconversion modes. The integrated baluns and matching circuitry allow for 50 single-ended interfaces to the RF port and the two LO ports. The RF port can be used as an input for downconversion or an output for upconversion. A single-pole, double-throw (SPDT) switch provides 50ns switching time between the two LO inputs with 49dB of LO-to-LO isolation. Furthermore, the integrated LO buffer provides a high drive level to the mixer core, reducing the LO drive required at the MAX2031's inputs to a -3dBm to +3dBm range. The IF port incorporates a differential output for downconversion, which is ideal for providing enhanced IIP2 performance. For upconversion, the IF port is a differential input. Specifications are guaranteed over broad frequency ranges to allow for use in cellular band WCDMA, cdmaOneTM, cdma2000, and GSM 850/GSM 900 2.5G EDGE base stations. The MAX2031 is specified to operate over an 815MHz to 1000MHz RF frequency range, a 960MHz to 1180MHz LO frequency range, and a DC to 250MHz IF frequency range. Operation beyond these ranges is possible; see the Typical Operating Characteristics for additional details. The MAX2031 is optimized for high-side LO injection architectures. However, the device can operate in lowside LO injection applications with an extended LO range, but performance degrades as fLO decreases. See
cdmaOne is a trademark of CDMA Development Group. 12
the Typical Operating Characteristics for measurements taken with fLO below 960MHz. For a pin-compatible device that has been optimized for LO frequencies below 960MHz, contact the factory.
RF Port and Balun
For using the MAX2031 as a downconverter, the RF input is internally matched to 50, requiring no external matching components. A DC-blocking capacitor is required because the input is internally DC shorted to ground through the on-chip balun. For upconverter operation, the RF port is a single-ended output similarly matched to 50.
LO Inputs, Buffer, and Balun
The MAX2031 is optimized for high-side LO injection architectures with a 960MHz to 1180MHz LO frequency range. For a device with a 325MHz to 850MHz LO frequency range, contact the factory. As an added feature, the MAX2031 includes an internal LO SPDT switch that can be used for frequency-hopping applications. The switch selects one of the two single-ended LO ports, allowing the external oscillator to settle on a particular frequency before it is switched in. LO switching time is typically less than 50ns, which is more than adequate for nearly all GSM applications. If frequency hopping is not employed, set the switch to either of the LO inputs. The switch is controlled by a digital input (LOSEL): logic-high selects LO2, logic-low selects LO1. To avoid damage to the part, voltage MUST be applied to VCC before digital logic is applied to LOSEL (see the Absolute Maximum Ratings). LO1 and LO2 inputs are internally matched to 50, requiring an 82pF DC-blocking capacitor at each input.
______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch
A two-stage internal LO buffer allows a wide inputpower range for the LO drive. All guaranteed specifications are for a -3dBm to +3dBm LO signal power. The on-chip low-loss balun, along with an LO buffer, drives the double-balanced mixer. All interfacing and matching components from the LO inputs to the IF outputs are integrated on-chip.
Layout Considerations
A properly designed PC board is an essential part of any RF/microwave circuit. Keep RF signal lines as short as possible to reduce losses, radiation, and inductance. For the best performance, route the ground-pin traces directly to the exposed pad under the package. The PC board exposed pad MUST be connected to the ground plane of the PC board. It is suggested that multiple vias be used to connect this pad to the lower-level ground planes. This method provides a good RF/thermal conduction path for the device. Solder the exposed pad on the bottom of the device package to the PC board. The MAX2031 evaluation kit can be used as a reference for board layout. Gerber files are available upon request at www.maxim-ic.com.
MAX2031
High-Linearity Mixer
The core of the MAX2031 is a double-balanced, highperformance passive mixer. Exceptional linearity is provided by the large LO swing from the on-chip LO buffer.
Differential IF
The MAX2031 mixer has a DC to 250MHz IF frequency range. Note that these differential ports are ideal for providing enhanced IIP2 performance. Single-ended IF applications require a 1:1 balun to transform the 50 differential IF impedance to 50 single-ended. Including the balun, the IF return loss is better than 15dB. The differential IF is used as an input port for upconverter operation. The user can use a differential IF amplifier following the mixer, but a DC block is required on both IF pins.
Power-Supply Bypassing
Proper voltage-supply bypassing is essential for highfrequency circuit stability. Bypass each VCC pin with the capacitors shown in the Typical Application Circuit. See Table 1.
Applications Information
Input and Output Matching
The RF and LO inputs are internally matched to 50. No matching components are required. As a downconverter, the return loss at the RF port is typically better than 15dB over the entire input range (815MHz to 1000MHz), and return loss at the LO ports are typically 15dB (960MHz to 1180MHz). RF and LO inputs require only DC-blocking capacitors for interfacing. An optional L-C bandpass filter (BPF) can be installed at the RF port to improve upconverter performance. See the Typical Application Circuit and Typical Operating Characteristics for upconverter operation with an L-C BPF tuned for 810MHz RF frequency. Performance can be optimized at other frequencies by choosing different values for L1 and C4. Removing L1 and C4 altogether results in a broader match, but performance degrades. Contact factory for details. The IF output impedance is 50 (differential). For evaluation, an external low-loss 1:1 (impedance ratio) balun transforms this impedance to a 50 single-ended output (see the Typical Application Circuit).
Table 1. Typical Application Circuit Component List
COMPONENT C1, C2, C7, C8, C10, C11, C12 C3, C6, C9 C4* C5** L1* R1 T1 U1 VALUE 82pF 10nF 6pF 2pF 4.7nH 523 1:1 DESCRIPTION Microwave capacitors (0603) Microwave capacitors (0603) Microwave capacitor (0603) Microwave capacitor (0603) Inductor (0603) 1% resistor (0603) IF balun M/A-COM: MABAES0029
MAX2031 Maxim IC
*C4 and L1 installed only when mixer is used as an upconverter. **C5 installed only when mixer is used as a downconverter.
Exposed Pad RF/Thermal Considerations
The exposed paddle (EP) of the MAX2031's 20-pin thin QFN-EP package provides a low-thermal-resistance path to the die. It is important that the PC board on which the MAX2031 is mounted be designed to conduct heat from the EP. In addition, provide the EP with a low-inductance path to electrical ground. The EP MUST be soldered to a ground plane on the PC board, either directly or through an array of plated via holes.
Bias Resistor
Bias current for the LO buffer is optimized by fine tuning resistor R1. If reduced current is required at the expense of performance, contact the factory for details. If the 1% bias resistor values are not readily available, substitute standard 5% values.
______________________________________________________________________________________
13
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Typical Application Circuit
T1 1 3 4 5
IF
C5 GND GND 17 GND 16 C12 VCC C4 L1 RF TAP GND GND 1 2 3 4 E.P. 5 11 15 LO2 VCC GND GND LO1 C10 6 VCC 7 LOBIAS 8 VCC 9 LOSEL 10 GND LO1 C11 LO2 VCC 14 13 12 LOSEL C6 C7 VCC 20 C3 C1 RF C2
IF+ 19 C8
18
R1 VCC
IF-
MAX2031
VCC NOTE: L1 AND C4 USED ONLY FOR UPCONVERTER OPERATION. C5 USED ONLY FOR DOWNCONVERTER OPERATION.
C9
Chip Information
TRANSISTOR COUNT: 1017 PROCESS: SiGe BiCMOS
14
______________________________________________________________________________________
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)
D2 D D/2 MARKING k L
C L
b D2/2
0.10 M C A B
XXXXX
E/2 E2/2 E (NE-1) X e
C L
E2
PIN # 1 I.D.
DETAIL A
e (ND-1) X e
e/2
PIN # 1 I.D. 0.35x45 DETAIL B
e
L1
L
C L
C L
L
L
e 0.10 C A 0.08 C
e
C
A1 A3 PACKAGE OUTLINE, 16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm
-DRAWING NOT TO SCALE-
21-0140
H
1 2
______________________________________________________________________________________
QFN THIN.EPS 15
High-Linearity, 815MHz to 1000MHz Upconversion/ Downconversion Mixer with LO Buffer/Switch MAX2031
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)
COMMON DIMENSIONS
PKG. 16L 5x5 20L 5x5 28L 5x5 32L 5x5 40L 5x5 SYMBOL MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX.
EXPOSED PAD VARIATIONS PKG. CODES T1655-1 T1655-2 T1655N-1 T2055-2 T2055-3 T2055-4 T2055-5 T2855-1 T2855-2 T2855-3 T2855-4 T2855-5 T2855-6 T2855-7 T2855-8 T2855N-1 T3255-2 T3255-3 T3255-4 T3255N-1 T4055-1
D2
MIN. NOM. MAX. MIN.
E2
NOM. MAX.
L
-0.15
DOWN BONDS ALLOWED
A A1 A3 b D E e k L
0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0 0.02 0.05 0.20 REF. 0.20 REF. 0.25 0.30 0.35 0.25 0.30 0.35 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 0.80 BSC. 0.65 BSC. 0.25 - 0.25 0.20 REF. 0.20 REF. 0.20 REF. 0.15 0.20 0.25 4.90 5.00 5.10 4.90 5.00 5.10 0.40 BSC. 0.25 0.35 0.45 0.20 0.25 0.30 0.20 0.25 0.30 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 4.90 5.00 5.10 0.50 BSC. 0.50 BSC. 0.25 - 0.25
3.00 3.00 3.00 3.00 3.00 3.00 3.15 3.15 2.60 3.15 2.60 2.60 3.15 2.60 3.15 3.15 3.00 3.00 3.00 3.00 3.20
3.10 3.20 3.00 3.10 3.20 3.00 3.10 3.20 3.00 3.10 3.20 3.00 3.10 3.20 3.00 3.10 3.20 3.00 3.25 3.25 2.70 3.25 2.70 2.70 3.25 2.70 3.25 3.25 3.10 3.10 3.10 3.10 3.35 3.35 2.80 3.35 2.80 2.80 3.35 2.80 3.35 3.35 3.20 3.20 3.20 3.20 3.15 3.15 2.60 3.15 2.60 2.60 3.15 2.60 3.15 3.15 3.00 3.00 3.00 3.00
3.10 3.10 3.10 3.10 3.10 3.10 3.25 3.25 2.70 3.25 2.70 2.70 3.25 2.70 3.25 3.25 3.10 3.10 3.10 3.10 3.30
3.20 3.20 3.20 3.20 3.20 3.20 3.35 3.35 2.80 3.35 2.80 2.80 3.35 2.80 3.35 3.35 3.20 3.20 3.20 3.20 3.40
** ** ** ** ** ** 0.40 ** ** ** ** ** ** ** 0.40 ** ** ** ** ** **
NO YES NO NO YES NO YES NO NO YES YES NO NO YES YES NO NO YES NO NO YES
0.30 0.40 0.50 0.45 0.55 0.65 0.45 0.55 0.65 0.30 0.40 0.50 0.40 0.50 0.60 - 0.30 0.40 0.50 16 20 28 32 N 40 ND 4 5 7 8 10 4 5 7 8 10 NE WHHB WHHC WHHD-1 WHHD-2 ----JEDEC L1
NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3. N IS THE TOTAL NUMBER OF TERMINALS. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE. 5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.25 mm AND 0.30 mm FROM TERMINAL TIP. 6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. 7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. 8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220, EXCEPT EXPOSED PAD DIMENSION FOR T2855-1, T2855-3, AND T2855-6. 10. WARPAGE SHALL NOT EXCEED 0.10 mm. 11. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY. 12. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY. 13. LEAD CENTERLINES TO BE AT TRUE POSITION AS DEFINED BY BASIC DIMENSION "e", -0.05.
3.30 3.40 3.20
** SEE COMMON DIMENSIONS TABLE
PACKAGE OUTLINE, 16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm
-DRAWING NOT TO SCALE-
21-0140
H
2 2
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.

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