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19-1834; Rev 1; 5/01
KIT ATION EVALU ABLE AVAIL
W-CDMA LNA/Mixer ICs
Features
o Ultra-Low Current Consumption: 10.7mA (MAX2387), 9.9mA (MAX2388), and 7.9mA (MAX2389) o +2.7V to +3.3V Single-Supply Operation o Mixer NF: 7dB SSB o Cascaded Noise Figure: 2.3dB o LNA Low-Gain Mode: 32dB Gain Step (MAX2387) or 18dB Gain Step (MAX2388/MAX2389) o Mixer IIP3: 6dBm o < 1A Shutdown Current o Ultra-Small (3mm 3mm) 12-Pin QFN Package
General Description
The MAX2387/MAX2388/MAX2389 low-noise amplifier (LNA), downconverter mixers designed for W-CDMA applications, are ideal for ARIB (Japan) and ETSIUMTS (Europe) based systems. The MAX2387/ MAX2388/MAX2389 feature ultra-low current consumption and exceptionally low noise figures in ultra-small packages. The MAX2387/MAX2388 include an LNA, a downconverter mixer, and a local-oscillator (LO) buffer. The MAX2389 has an LNA and mixer, but minimizes current consumption by omitting the LO buffer. For all devices, the LNA and downconverter mixers are optimized for the 2110MHz to 2170MHz band. All devices feature a high-gain mode and a low-gain mode of LNA operation. The MAX2387 has a 32dB gain step, and the MAX2388/MAX2389 have an 18dB gain step. All ICs include a shutdown mode, powering down the IC during the front-end receiver's idle periods. The mixer 3rd-order nonlinearity performance is set using an external biasing resistor. For the MAX2387/ MAX2388, mixer performance is optimized for a -10dBm typical drive at the LO buffer input port. The MAX2389 mixer performance is optimized for a -4dBm typical drive at the LO input port. The LO port for all versions is configurable for either single-ended or differential operation. These devices operate from a +2.7V to +3.3V single supply and are available in ultra-small (3mm 3mm) 12-pin leadless packages (QFN).
MAX2387/MAX2388/MAX2389
Ordering Information
PART MAX2387EGC MAX2388EGC MAX2389EGC TEMP. RANGE -40C to +85C -40C to +85C -40C to +85C PIN-PACKAGE 12 QFN 12 QFN 12 QFN
________________________Applications
Japanese 3rd-Generation W-CDMA Cellular Phones Dual-Mode W-CDMA/GSM Cellular Phones
Pin Descriptions/Functional Diagrams
TOP VIEW
BIAS 12 GND 11 LNA_IN 10 BIAS GND 11 LNA_IN 10
MAX2387/MAX2388
12
MAX2389
LNA_OUT GAIN MIX_IN
1 2 3
BIAS
9 8 7
VCC IF+ IF-
LNA_OUT GAIN MIX_IN
1 2 3
BIAS
9 8 7
VCC IF+ IF-
4 SHDN
5 LO+
6 LO-
4 SHDN
5 LO+
6 LO-
________________________________________________________________ Maxim Integrated Products
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W-CDMA LNA/Mixer ICs MAX2387/MAX2388/MAX2389
ABSOLUTE MAXIMUM RATINGS
VCC to GND ...........................................................-0.3V to +4.3V SHDN, GAIN to GND..................................-0.3V to (VCC + 0.3V) AC Signals ....................................................................+1V peak Digital Input Current .........................................................10mA Continuous Power Dissipation (TA = +70C) 12-Pin QFN (derate 11.9mW/C above TA = +70C)...952mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Soldering Temperature (10s) ...........................................+300C
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
(VCC = +2.7V to +3.3V, SHDN = high, RBIAS = 24k, no input AC signals, TA = -40C to +85C. Typical values are at VCC = +2.7V, TA = +25C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MAX2387 High-gain mode Operating Supply Current ICC Low-gain mode SHDN = low 2.0 0.6 VIN = VIH VIN = VIL -20 1 MAX2388 MAX2389 MAX2387 MAX2388 MAX2389 Shutdown Supply Current Digital Input Logic High Digital Input Logic Low Input Logic High Current Input Logic Low Current ICC VIH VIL IIH IIL MIN TYP 10.7 9.9 7.9 7.2 6.7 4.7 0.2 MAX 12.4 11.7 9.3 8.7 8.1 5.7 1.0 A V V A A mA UNITS
AC ELECTRICAL CHARACTERISTICS
(MAX238_ EV kit, VCC = 2.7V, SHDN = high, fRF_IN = fLNA_IN = 2140MHz, fLO = 2330MHz (fIF = 190MHz). Mixer, LNA, and LO input ports are driven with 50 sources. RBIAS = 24k 1%, PLO = -10dBm (MAX2387/MAX2388), PLO = -4dBm (MAX2389), PRF = -30dBm. Typical values are at VCC = +2.7V, TA = +25C, unless otherwise noted.)
PARAMETER RF Frequency Range (Note 1) Gain SYMBOL fRF GLNA TA = +25C TA = -40C to +85C (Note 2) CONDITIONS MIN 2110 13.5 12.9 15 TYP MAX 2170 16.5 17.0 UNITS MHz dB LNA PERFORMANCE: LOW-GAIN MODE (GAIN = HIGH)
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W-CDMA LNA/Mixer ICs
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX238_ EV kit, VCC = 2.7V, SHDN = high, fRF_IN = fLNA_IN = 2140MHz, fLO = 2330MHz (fIF = 190MHz). Mixer, LNA, and LO input ports are driven with 50 sources. RBIAS = 24k 1%, PLO = -10dBm (MAX2387/MAX2388), PLO = -4dBm (MAX2389), PRF = -30dBm. Typical values are at VCC = +2.7V, TA = +25C, unless otherwise noted.)
PARAMETER Noise Figure (Notes 1, 3) 3rd-Order Input Intercept Point (Note 4) Input -1dB Compression Point (Note 1) SYMBOL NFLNA IIP3LNA IP-1dB TA = +25C TA = -40C to +85C (Note 2) -19 CONDITIONS MIN TYP 1.7 4.2 -13 MAX 2.2 UNITS dB dBm dBm
MAX2387/MAX2388/MAX2389
LNA PERFORMANCE: LOW-GAIN MODE (GAIN = LOW) MAX2387 TA = +25C Gain GLNA TA = -40C to +85C (Note 2) MAX2388/ MAX2389 MAX2387 MAX2388/ MAX2389 MAX2387 Noise Figure (Notes 1, 3) NFLNA MAX2388/ MAX2389 MAX2387 3rd-Order Input Intercept Point (Note 5) IIP3LNA MAX2388/ MAX2389 MAX2387 Input -1dB Compression Point IP-1dB MAX2388/ MAX2389 2110 2250 150 TA = +25C TA = -40C to +85C (Note 2) MAX2387 Noise Figure (SSB) (Note 1) NFMXR TA = +25C MAX2388 MAX2389 8.5 7.5 7.2 6.8 7.3 10 -18.5 -4.7 -10.5 5.4 19.2 6.5 1 3.4 -9.9 -7.7 dBm dBm -16.5 -2.8 -14.5 -0.9 -14 -0.7 21.3 8.4 dB dB
MIXER PERFORMANCE (GAIN = HIGH) RF Frequency Range (Note 1) LO Frequency Range (Note 1) IF Frequency Range (Note 1) Power Conversion Gain fRF fLO fIF GMXR 2170 2600 400 11.5 12.5 8.8 8.2 9.5 dB MHz MHz MHz dB
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W-CDMA LNA/Mixer ICs MAX2387/MAX2388/MAX2389
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX238_ EV kit, VCC = 2.7V, SHDN = high, fRF_IN = fLNA_IN = 2140MHz, fLO = 2330MHz (fIF = 190MHz). Mixer, LNA, and LO input ports are driven with 50 sources. RBIAS = 24k 1%, PLO = -10dBm (MAX2387/MAX2388), PLO = -4dBm (MAX2389), PRF = -30dBm. Typical values are at VCC = +2.7V, TA = +25C, unless otherwise noted.)
PARAMETER 3rd-Order Input Intercept Point (Notes 1, 3) SYMBOL IIP3MXR CONDITIONS MAX2387 MAX2388 MAX2389 MAX2387 Input -1dB Compression Point (Note 1) IP-1dB,MXR TA = -40C to +85C MAX2388 MAX2389 MIXER PERFORMANCE (GAIN = LOW) Power Conversion Gain (Note 1) GMXR TA = +25C TA = -40C to +85C MAX2387 Noise Figure (SSB) (Note 1) NFMXR TA = +25C MAX2388 MAX2389 MAX2387 3rd-Order Input Intercept Point (Note 4) IIP3MXR TA = +25C MAX2388 MAX2389 MAX2387 Input -1dB Compression Point (Note 1) IP-1dB,MXR TA = -40C to +85C MAX2388 MAX2389 -15.0 -18.2 -17.8 7.5 6.5 6.9 6.1 6.6 0.7 0.2 1.3 -10.7 -11.3 -11.9 dBm dBm 9.0 10.5 12.0 8.4 7.4 8.8 dB dB -13.9 -16.3 -15.4 MIN TYP 6 6 5 -10 -10.5 -10.5 dBm dBm MAX UNITS
Note 1: Note 2: Note 3: Note 4: Note 5:
Guaranteed by design and characterization. MIN guaranteed by production test, MAX guaranteed by design and characterization. Includes input matching circuit loss. fIN1 = 2140MHz, fIN2 = 2141MHz, PIN = -30dBm per tone. fIN1 = 2140MHz, fIN2 = 2141MHz, PIN = -25dBm per tone.
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W-CDMA LNA/Mixer ICs
Typical Operating Characteristics
(TA = +25C, VCC = +2.7V, unless otherwise noted.)
MAX2387 SUPPLY CURRENT vs. TEMPERATURE
MAX2387/88/89 toc01
MAX2387/MAX2388/MAX2389
MAX2387 LNA GAIN vs. TEMPERATURE
MAX2387/88/89 toc02
MAX2387 LNA IIP3 vs. TEMPERATURE
8 6 4 IIP3 (dBm) 2 0 -2 -4 LOW-GAIN MODE
MAX2387/88/89 toc03
16 14 SUPPLY CURRENT (mA) 12 10 8 6 4 2 -40 -15 10 35 60 VCC = +2.7V LOW-GAIN VCC = +4.3V LOW-GAIN VCC = +2.7V VCC = +3.3V VCC = +4.3V HIGH-GAIN LOW-GAIN HIGH-GAIN
20 15 10 GAIN (dB) 5 0 -5 HIGH-GAIN MODE
10 HIGH-GAIN MODE
VCC = +3.3V HIGH-GAIN
-10 -15 -20 85 -40 -15
LOW-GAIN MODE
-6 -8 -10
10
35
60
85
-40
-15
10
35
60
85
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
MAX2387 MIXER CONVERSION GAIN vs. LO INPUT POWER
MAX2387/88/89 toc04
MAX2387 MIXER IIP2 AND IIP3 vs. TEMPERATURE
MAX2387/88/89 toc05
MAX2387 MIXER INPUT -1dB COMPRESSION POINT vs. TEMPERATURE
MAX2387/88/89 toc06
12 10 CONVERSION GAIN (dB) 8
30 25 20 IIP (dBm) 15 10 5 0 IIP3: HIGH-GAIN MODE IIP2: HIGH-GAIN MODE, SINGLEENDED LO IIP2: HIGH-GAIN MODE, DIFFERENTIAL LO
-6 -1dB COMPRESSION POINT (dBm)
-8
LOW-GAIN MODE 6 4 2 0 -13 -12 -11
HIGH-GAIN MODE
-10
-12
-14
-5 -10 -10 -9 -8 -7 -40
IIP3: LOW-GAIN MODE -16 10 35 60 85 -40 -15 10 35 60 85
-15
LO INPUT LEVEL (dBm)
TEMPERATURE (C)
TEMPERATURE (C)
MAX2387 MIXER LO-IF AND LO-RF ISOLATION vs. LO FREQUENCY
MAX2387/88/89 toc07
MAX2387 LNA NOISE FIGURE vs. FREQUENCY
MAX2387/88/89 toc08
MAX2387 MIXER NOISE FIGURE vs. LO POWER
HIGH-GAIN MODE 7 NOISE FIGURE (dB)
MAX2387/88/89 toc09
40 35 30 ISOLATION (dB) 25 20 15 10 5 0 2300 2310 2320 2330 2340 2350 LO-IF: HIGH-GAIN MODE LO-IF: LOW-GAIN MODE LO-RF: LOW-GAIN MODE LO-RF: HIGH-GAIN MODE
25
8
20 NOISE FIGURE (dB)
15
LOW-GAIN MODE
6
LOW-GAIN MODE
10 HIGH-GAIN MODE 5
5
VCC = +2.7V LO = -10dBm 0 2360 2110 2120 2130 2140 2150 2160 2170 4 -13 -12 -11 -10 -9 -8 -7 FREQUENCY (MHz) LO POWER (dB)
FREQUENCY (MHz)
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W-CDMA LNA/Mixer ICs MAX2387/MAX2388/MAX2389
Typical Operating Characteristics (continued)
(TA = +25C, VCC = +2.7V, unless otherwise noted.)
MAX2388 SUPPLY CURRENT vs. TEMPERATURE
MAX2387/88/89 toc10
MAX2388 LNA GAIN vs. TEMPERATURE
MAX2387/88/89 toc11
MAX2388 LNA IIP3 vs. TEMPERATURE
8 6 4 IIP3 (dBm) 2 0 -2 -4 -6 -8 LOW-GAIN MODE
MAX2387/88/89 toc12
16 14 SUPPLY CURRENT (mA) 12 10 8 6 4 2 -40 -15 10 35 60 VCC = +2.7V VCC = +3.3V LOW-GAIN LOW-GAIN VCC = +4.3V LOW-GAIN VCC = +2.7V VCC = +3.3V VCC = +4.3V HIGH-GAIN HIGH-GAIN HIGH-GAIN
20
10 HIGH-GAIN MODE
15 HIGH-GAIN MODE GAIN (dB) 10
5 LOW-GAIN MODE 0
-5 85 -40 -15 10 35 60 85 TEMPERATURE (C) TEMPERATURE (C)
-10 -40 -15 10 35 60 85 TEMPERATURE (C)
MAX2388 MIXER CONVERSION GAIN vs. LO INPUT POWER
MAX2387/88/89 toc13
MAX2388 MIXER IIP2 AND IIP3 vs. TEMPERATURE
25 20 IIP (dBm) 15 10 5 0 IIP2: HIGH-GAIN MODE, SINGLE-ENDED LO IIP2: HIGH-GAIN MODE, DIFFERENTIAL LO
MAX2387/88/89 toc14
MAX2388 MIXER INPUT -1dB COMPRESSION POINT vs. TEMPERATURE
MAX2387/88/89 toc15
12 10 CONVERSION GAIN (dB) 8 LOW-GAIN MODE 6 4 2 0 -13 -12 -11 -10 -9 -8 HIGH-GAIN MODE
30
-6 -1dB COMPRESSION POINT (dBm)
-8
-10
-12
-5 -10 -7
IIP3: HIGH-GAIN MODE -40 -15 10
-14
IIP3: LOW-GAIN MODE 35 60 85
-16 -40 -15 10 35 60 85 TEMPERATURE (C)
LO INPUT LEVEL (dBm)
TEMPERATURE (C)
MAX2388 MIXER LO-IF AND LO-RF ISOLATION vs. LO FREQUENCY
MAX2387/88/89 toc16
MAX2388 LNA NOISE FIGURE vs. FREQUENCY
MAX2387/88/89 toc17
MAX2388 MIXER NOISE FIGURE vs. LO POWER
HIGH-GAIN MODE 7 NOISE FIGURE (dB)
MAX2387/88/89 toc18
40 35 30 ISOLATION (dB) 25 20 15 10 5 0 2300 2310 2320 2330 2340 2350 LO-IF: HIGH-GAIN MODE VCC = +2.7V LO = -10dBm LO-IF: LOW-GAIN MODE LO-RF: LOW-GAIN MODE LO-RF: HIGH-GAIN MODE
10 LOW-GAIN MODE
8
8 NOISE FIGURE (dB)
6
6 LOW-GAIN MODE 5
4
HIGH-GAIN MODE
2
0 2360 2110 2120 2130 2140 2150 2160 2170 FREQUENCY (MHz) FREQUENCY (MHz)
4 -13 -12 -11 -10 -9 -8 -7 LO POWER (dB)
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W-CDMA LNA/Mixer ICs
Typical Operating Characteristics (continued)
(TA = +25C, VCC = +2.7V, unless otherwise noted.)
MAX2389 SUPPLY CURRENT vs. TEMPERATURE
MAX2387/88/89 toc19
MAX2387/MAX2388/MAX2389
MAX2389 LNA GAIN vs. TEMPERATURE
MAX2387/88/89 toc20
MAX2389 LNA IIP3 vs. TEMPERATURE
8 6 4 IIP3 (dBm) 2 0 -2 -4 -6 -8 LOW-GAIN MODE HIGH-GAIN MODE
MAX2387/88/89 toc21
12 10 SUPPLY CURRENT (mA) 8 6 4 2 0 -40 -15 10 35 60 VCC = +2.7V LOW-GAIN VCC = +3.3V LOW-GAIN VCC = +2.7V HIGH-GAIN VCC = +4.3V LOW-GAIN VCC = +3.3V HIGH-GAIN VCC = +4.3V HIGH-GAIN
20
10
15 HIGH-GAIN MODE GAIN (dB) 10
5 LOW-GAIN MODE 0
-5 85 -40 -15 10 35 60 85 TEMPERATURE (C) TEMPERATURE (C)
-10 -40 -15 10 35 60 85 TEMPERATURE (C)
MAX2389 MIXER CONVERSION GAIN vs. LO INPUT POWER
MAX2387/88/89 toc22
MAX2389 MIXER IIP2 AND IIP3 vs. TEMPERATURE
25 20 IIP (dBm) 15 10 5 0 IIP2: HIGH-GAIN MODE, SINGLE-ENDED LO IIP2: HIGH-GAIN MODE, DIFFERENTIAL LO
MAX2387/88/89 toc23
MAX2389 MIXER INPUT -1dB COMPRESSION POINT vs. TEMPERATURE
MAX2387/88/89 toc24
12 10 CONVERSION GAIN (dB) 8 LOW-GAIN MODE 6 4 2 0 -13 -12 -11 -10 -9 -8 HIGH-GAIN MODE
30
-6 -1dB COMPRESSION POINT (dBm)
-8
-10
-12
-14
-5 -10 -7 -40
IIP3: HIGH-GAIN MODE -15 10
IIP3: LOW-GAIN MODE 35 60 85
-16 -40 -15 10 35 60 85 TEMPERATURE (C)
LO INPUT LEVEL (dBm)
TEMPERATURE (C)
MAX2389 MIXER LO-IF AND LO-RF ISOLATION vs. LO FREQUENCY
45 40 ISOLATION (dB) 35 30 25 20 15 10 2300 2310 2320 2330 2340 2350 2360 FREQUENCY (MHz) LO-IF: HIGH-GAIN MODE LO-IF: LOW-GAIN MODE LO-RF: LOW-GAIN MODE
MAX2387/88/89 toc25
MAX2389 LNA NOISE FIGURE vs. FREQUENCY
MAX2387/88/89 toc26
MAX2389 MIXER NOISE FIGURE vs. LO POWER
MAX2387/88/89 toc27
50 LO-RF: HIGH-GAIN MODE
10 LOW-GAIN MODE
9
8 NOISE FIGURE (dB)
8 NOISE FIGURE (dB)
HIGH-GAIN MODE
6
7
4
HIGH-GAIN MODE
6 LOW-GAIN MODE 5
2 VCC = +2.7V LO = -4dBm 0 2110 2120 2130 2140 2150 2160 2170 FREQUENCY (MHz)
4 -7 -6 -5 -4 -3 -2 -1 LO POWER (dB)
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W-CDMA LNA/Mixer ICs MAX2387/MAX2388/MAX2389
Pin Description
PIN 1 2 3 4 5 6 7 8 9 10 11 12 NAME LNA_OUT GAIN MIX_IN SHDN LO+ LOIFIF+ VCC LNA_IN GND BIAS LNA/Mixer Gain Control Input RF Input Port for Mixer. Internally matched to 50. Shutdown Input. Drive low to enable shutdown mode. Drive high or connect to VCC for normal operation. Noninverting LO Input for LO Buffer (MAX2387/MAX2388) or Mixer (MAX2389). Differential input impedance is 200. AC-couple to GND when the LO is driven single-endedly. Inverting LO Input for LO Buffer (MAX2387/MAX2388) or Mixer (MAX2389). Differential input impedance is 200. Inverting Mixer's IF Open-Collector Output Noninverting Mixer's IF Open-Collector Output Supply Voltage (+2.7V to +3.3V). Capacitively bypass to GND near the IC. RF Input Port for LNA. Requires external matching. Ground LNA/Mixer Bias Pin. For nominal bias, connect 24k 1% resistor to GND. FUNCTION RF Output Port for LNA. Requires external matching.
Detailed Description
The MAX2387/MAX2388/MAX2389 include an LNA and downconverter mixer. These devices feature a shutdown mode to power down the IC during the frontend receiver's idle periods. Each IC operates from a +2.7V to +3.3V single supply and is housed in a 12-pin ultra-small QFN (3mm 3mm) leadless package. The MAX2387/MAX2388/MAX2389 are fabricated using an advanced high-frequency silicon germanium process. The LNA and mixer NF and IIP3 have been optimized to provide excellent RF performance in the 2110MHz to 2170MHz band, while drawing minimal current. For the MAX2387/MAX2388, the mixer's performance is optimized for a -10dBm typical drive at the LO buffer input port. The MAX2389's mixer performance is optimized for a -4dBm typical drive at the LO input port. The LO port for all versions can be driven either singleended or differentially.
Downconverter Mixer
The receive mixer is a wideband, single-balanced design with exceptional noise figure and linearity. The LO input frequency range is 2330MHz to 2360MHz and the RF input frequency range is 2110MHz to 2170MHz. The mixer is internally matched to 50, thus eliminating any external matching components.
LO Input Buffers
The MAX2387/MAX2388 feature open-collector LO buffers to increase isolation between the LO and the rest of the system. The MAX2389 offers a lower current consumption for applications that do not require an LO buffer.
RF Inputs
The MIX_IN input is typically connected to the LNA output through an off-chip filter providing image rejection and out-of-band interferers filtering. The LNA input and output require an external matching network to 50. Note that the mixer input is internally matched to 50. See Figure 1, Typical Application Circuits for 2.14GHz.
LNA High/Low-Gain Mode
These devices offer two modes of operation for the LNA: high-gain mode and low-gain mode, selectable with a GAIN select pin. The MAX2387 has a gain of 15dB in high-gain mode and -16.6dB in low-gain mode. The MAX2388/MAX2389 have a gain of 15dB in high-gain mode and -2.8dB in low-gain mode. Matching LNA in high-gain mode will ensure matching in low-gain mode.
LO Inputs
The LO+ and LO- pins are internally terminated with 100 resistors. AC-couple the local-oscillator signal to these pins. If a single-ended LO source is used, connect LO+ to ground using an AC-coupling capacitor.
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W-CDMA LNA/Mixer ICs
IF Output Port
The mixer output appears on the differential IF+ and IFpins. These open-collector outputs require an external inductor to V CC for DC biasing. This port typically requires a matching network for coupling to an external IF filter. Figures 1 and 2 show examples of differential and single-ended IF port connections. For the best gain and noise performance, use highquality components for the LNA input matching circuit, and solder the slug evenly to the board ground plane. For the power supplies, a star topology works well to isolate between different sections of the device. Each VCC node has its own path to a central VCC. Place decoupling capacitors that provide low impedance at the RF frequency of interest close to all VCC connections. The central VCC should have a large decoupling capacitor as well. (Use MAX2387/MAX2388/MAX2389 EV kit as an example.)
MAX2387/MAX2388/MAX2389
Applications Information
Layout
A properly designed PC board is essential to any RF/microwave circuit. Keep RF signal lines as short as possible to minimize losses and radiation. Always use controlled impedance lines on all high-frequency inputs and outputs and use low-inductance connections to ground on all GND pins. At the mixer outputs, keep the differential lines together and of the same length to ensure signal balance.
Chip Information
TRANSISTOR COUNT: 208
Typical Application Circuits
2.2nH RX 0.8pF BIAS_SET TX 0.8pF LNA_OUT 1 2.2nH 10nF 10k 2 GAIN 6800pF 20 RX BPF VCC 10nF 10k 82pF SHDN VCO MIX_IN 3
MAX2387 MAX2388 MAX2389
24k
GND
12
11
10
LNA_IN
VCC 27nH 6800pF 9 8 7 IF-
VCC 10F
BIAS
39pF
IF SAW
IF+ 10k
27nH
22pF
39pF
ZL
4
5 LO+
6 LO82pF
Figure 1. MAX2387/MAX2388/MAX2389 Differential IF Load; Single-Ended VCO
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W-CDMA LNA/Mixer ICs MAX2387/MAX2388/MAX2389
2.2nH RX 0.8pF BIAS TX 0.8pF LNA_OUT 1 2.2nH 10nF 10k 2 GAIN 6800pF 20 RX BPF VCC 10nF 10k 82pF SHDN 5.6nH MIX_IN 3
MAX2387 MAX2388 MAX2389
24k
GND
12
11
10
LNA_IN
VCC 6800pF 27nH
VCC 10nF
BIAS
9 8 7 IF+ 10k IFIFOUT 27nH
39pF
IF SAW
22pF
39pF
ZL
4
5 LO+
6 LO82pF
VCO
Figure 2. MAX2387/MAX2388/MAX2389 Differential IF Load; Differential VCO
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W-CDMA LNA/Mixer ICs MAX2387/MAX2388/MAX2389
Table 1. LNA Input/Output S-Parameters (VCC = +2.7V, High-Gain Mode)
S-PARAMETERS FREQUENCY (MHZ) 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600 3700 LNA (S11) MAGNITUDE 0.83287 0.81889 0.80364 0.78522 0.76638 0.74542 0.72614 0.70338 0.68291 0.66114 0.63958 0.61641 0.59303 0.56989 0.54509 0.52084 0.49554 0.47232 0.44892 0.42766 0.40833 0.39421 0.38321 0.37608 0.37573 0.38123 0.39208 0.40626 0.42512 0.44708 0.47302 0.49849 PHASE -41.655 -43.792 -46.486 -49.489 -53.118 -56.424 -59.477 -62.232 -64.933 -67.298 -69.782 -72.041 -74.571 -76.974 -79.651 -82.452 -85.891 -89.473 -93.529 -98.164 -103.42 -109.16 -115.32 -121.52 -128.03 -134.23 -139.73 -144.57 -148.8 -152.13 -154.7 -156.57 LNA (S21) MAGNITUDE 5.2176 5.0791 4.9464 4.7767 4.6109 4.4363 4.2861 4.1209 4.0146 3.8951 3.7818 3.6761 3.5823 3.5198 3.4376 3.3691 3.2858 3.2544 3.195 3.1347 3.06 2.9818 2.9149 2.821 2.7086 2.5802 2.4696 2.3296 2.2157 2.0519 1.9382 1.8048 PHASE 146.82 145.33 143.26 141.09 138.2 135.68 133.2 130.93 128.4 126.82 124.53 122.88 120.51 118.87 116.77 115.17 112.47 110.28 108.05 105.62 102.94 100.13 96.964 94.462 91.479 88.528 85.584 83.264 80.95 79.588 77.337 76.594 LNA (S12) MAGNITUDE 0.020023 0.021153 0.022406 0.023962 0.025913 0.027189 0.028484 0.030015 0.030979 0.032236 0.033056 0.03398 0.035009 0.036332 0.036887 0.038318 0.039355 0.040817 0.042049 0.043438 0.044844 0.046899 0.048389 0.049426 0.05079 0.051657 0.053915 0.055483 0.05783 0.060614 0.065129 0.069104 PHASE 79.051 78.88 78.412 79.181 78.989 79.621 79.666 80.686 81.41 82.856 83.763 85.56 86.377 88.572 89.686 91.409 93.409 94.973 97.086 98.58 100.14 101.7 103.31 104.62 106.39 108.22 110.43 113.29 115.29 118.09 119.23 120.99 LNA (S22) MAGNITUDE 0.92461 0.9171 0.91098 0.90108 0.8914 0.87913 0.86957 0.85623 0.84504 0.83313 0.82095 0.80875 0.79497 0.78338 0.76891 0.75735 0.74365 0.73415 0.72262 0.71335 0.70474 0.70067 0.69795 0.69514 0.69504 0.69915 0.70504 0.71095 0.71819 0.72516 0.73416 0.73997 PHASE -15.535 -16.23 -17.187 -18.177 -19.536 -20.759 -22.045 -23.156 -24.46 -25.525 -26.882 -28.147 -29.825 -31.503 -33.44 -35.559 -38.175 -41.034 -44.165 -47.828 -51.733 -56.04 -60.397 -64.899 -69.425 -73.798 -77.625 -81.166 -84.4 -87.06 -89.168 -90.676
Package Information
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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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 (c) 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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