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Features
* * * * * *
Active Mixer with Conversion Gain Integrated LO and IF Drivers Excellent Linearity Broadband 50 W Impedance on all Ports Low LO-RF Leakage Differential or Single Ended Inputs
Benefits
* Small and Thin 16-pin SSOP Package with Exposed Paddle * Few External Components * Fully ESD Protected
Application
* DCS/PCS/TDMA and CDMA2000 Transmitter * Other Digital Communication Applications * High Performance RF Instrumentation
High Linearity Active Transmit Mixer for 1800 MHz to 2100 MHz ATR0786
Description
The ATR0786 is a high linearity active mixer which is manufactured using Atmels advanced Silicon Germanium technology for the use in a variety of high performance requiring RF systems such as digital communications. This mixer features a frequency range of 1800 MHz to 2100 MHz. It operates from a single 5 V supply and provides 16 dB of conversion gain while requiring only 0 dBm input to the integrated LO driver. An IF and an LO amplifier is also included. The ATR0786 incorporates internal matching on each RF, IF and LO port to enhance ease of use and to reduce the external components required. The RF and LO inputs can be driven differentially or single ended. Figure 1. Block Diagram
IF_IN+ 8 IF_IN12
9 5
RF_Out+
LO_IN+ 13 LO_IN-
4
RF_Out-
Rev. 4587B-SIGE-02/03
1
Pin Configuration
Figure 2. Pinning TSSOP16
Gnd Vcc Gnd RF_OutRF_Out+ Gnd Vcc IF_IN1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Gnd Vcc Gnd LO_INLO_IN+ Gnd Vcc IF_IN+
Pin Description
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Paddle Symbol GND Vcc GND RF_OUTRF_OUT+ GND Vcc IF_INIF_IN+ Vcc GND LO_IN+ LO_INGND Vcc GND Function
Ground Supply voltage Ground Negative RF output; nominal DC voltage is 2.3 V; (internally biased) input should be ACcoupled Positive RF output; nominal DC voltage is 2.3 V; (internally biased) input should be ACcoupled Ground Supply voltage Negative IF input; nominal DC voltage is 2.3 V, provided through off chip inductors Positive IF input; nominal DC voltage is 2.3 V, provided through off chip inductors Supply voltage Ground Negative local oscillator input; nominal DC voltage is 2.3 V; (internally biased) input should be AC-coupled Positive local oscillator input; nominal DC voltage is 2.3 V; (internally biased) input should be AC-coupled Ground Supply voltage Ground Device Ground and heat sink, requires good thermal path; RF reference plane
2
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ATR0786
Absolute Maximum Ratings
Parameters Supply voltages, no RF applied LO input signals IF input signals Operating case temperature Storage temperature Symbol VCC LO_IN-; LO_IN+ IF_IN-; IF_IN+ Value -0.5 to +5.5 +10.0 +10.0 -40 to +85 -55 to +150 Unit V dBm dBm C C
TC
TSTG
Thermal Resistance
Parameters Junction ambient Symbol RthJA Value 25 Unit K/W
Electrical Characteristics
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static conditions: VCC = +5.0 V, Tamb = 25C; PLO = 0 dBm; IF = 200 MHz; PIF = -20 dBm
No. Parameters General Performance Supply voltage Supply current LO drive LO, IF, RF return loss Matched to 50 W Matched to 50 W VCC ICC -3 4.75 5.0 200 0 14 +3 5.25 V mA dBm dB Test Conditions Pin Symbol Min. Typ. Max. Unit Type*
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
RF Electrical Characteristics (1800 MHz to 2000 MHz)
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static conditions: VCC = +5.0 V, Tamb = 25C; PLO = 0 dBm; IF = 200 MHz; PIF = -20 dBm
No. Parameters Mixer RF Performance RF frequency LO frequency IF frequency Conversion gain SSB noise figure Output IP3 Output P1dB Leakage (LO-RF) Leakage (LO-IF) IF1 = IF2 = -20 dBm/tone, 1 MHz spacing fRF fLO fIF G NF OIP3 P1dB 20 8 1800 1600 30 15 200 17 9.5 24 11 -20 -45 -10 -35 2000 1800 400 19 11.0 MHz MHz MHz dB dB dBm dBm dBm dBm Test Conditions Pin Symbol Min. Typ. Max. Unit Type*
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
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4587B-SIGE-02/03
RF Electrical Characteristics (2000 MHz to 2100 MHz)
Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static conditions: VCC = +5.0 V, Tamb = 25C; PLO = 0 dBm; IF = 200 MHz; PIF = -20 dBm
No. Parameters Mixer RF Performance RF frequency LO frequency IF frequency Conversion gain SSB noise figure Output IP3 Output P1dB Leakage (LO-RF) Leakage (LO-IF) IF1 = IF2 = -20 dBm/tone, 1 MHz spacing fRF fLO fIF G NF OIP3 P1dB 17 6 2000 1800 30 13 200 16 9.5 21 9 -20 -45 -10 -35 2100 2000 400 18 11.0 MHz MHz MHz dB dB dBm dBm dBm dBm Test Conditions Pin Symbol Min. Typ. Max. Unit Type*
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Typical Performance
Figure 3. Conversion Gain versus Frequency + Temperature
Conversion Gain vs Temperature Plo=0 dBm
20 Conversion Gain (dB) 15 10 85C 5 0 1800 25C -40C 1900 2000 2100
Frequency (MHz)
4
ATR0786
4587B-SIGE-02/03
ATR0786
Figure 4. Output IP3 versus Frequency + Temperature
Output IP3 vs Tem pe ra ture Plo=0 dBm
30 Output IP3 (dBm) 25 20 85C 15 10 1800 25C -40C 1900 2000 2100
Fre que ncy (M Hz)
Figure 5. Output IP3 versus Frequency + LO Drive
Output IP3 vs LO Drive T=25 C
30 Output IP3 (dBm) 25 20 -3 dBm 15 10 1800 0 dBm +3 dBm 1900 2000 2100
Fre que ncy (M Hz)
Figure 6. Conversion Gain versus Frequency + LO Drive
Conversion Gain vs LO Drive T=25 C
20 Conversion Gain (dB) 15 10 -3 dBm 5 0 1800 0 dBm +3 dBm 1900 2000 2100
Fre que ncy (M Hz)
5
4587B-SIGE-02/03
Figure 7. Leakages versus Frequency
Leakages Plo=0 dBm at pins T=25 C (Note 2)
0 -10 Leakage (dBm) -20 -30 -40 -50 -60 1500 1700 1900 2100 LO-RF LO-IF
Frequency (MHz)
Figure 8. Noise Figure versus Frequency + Temperature
Noise Figure vs Temperature Plo=0 dBm
12 Noise Figure (dB) 11 10 9 8 7 6 5 1800 1900 2000 2100 85C 25C -40C
Frequency (MHz)
Figure 9. RF and LO Return Loss versus Frequency
RF & LO Return Loss (Note 1)
0 -5 Return Loss (dB) -10 -15 -20 -25 -30 1600 RF RL LO RL 1700 1800 1900 2000 2100
Fre que ncy (M Hz)
6
ATR0786
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ATR0786
Figure 10. Output P1dB versus Frequency + Temperature
Output P1dB vs Temperature Plo=0 dBm
14 Output P1dB (dBm) 12 10 8 6 4 2 1800 85C 25C -40C 1900 2000 2100
Fre quency (M Hz)
Figure 11. IF Return Loss versus Frequency
IF Return Loss (Note 1)
0 -5 Return Loss (dB) -10 -15 -20 -25 -30 -35 0 100 200 300 400 IF Frequency (MHz)
Figure 12. Output P1dB versus Frequency + LO Drive
Output P1dB vs LO Drive T=25 C
14 Output P1dB (dBm) 12 10 8 6 4 2 1800 -3 dBm 0 dBm +3 dBm
1900
2000
2100
Fr e que ncy (M Hz)
7
4587B-SIGE-02/03
Figure 13. Demo Board Schematic
5V
Lfil
Vcc
C30 C3 IC1 1 2 3 4 5 6 7 8 C7 T2 16 15 14 13 12 11 10 9 C9 C1
RFout
T9 J3 C6
C4 C5
ATR0786
Vcc
Vcc
C11 C12 T11 J4 LOin
Vcc
C20
Vcc
C21
J5 IFin
Bill of Material of Demo Board
Parameters Test Conditions Pin Symbol Min. Typ.
Highly linear active mixer Capacitor Capacitor Capacitor Capacitor Inductor Capacitor Transformer Transformer RF connector Note: 1. Other sizes are possible. C7, C9 C1, C3, C20, C21, C30 C11, C12 C4, C5 Lfil C6 T9, T11 T2
Atmel
ATR0786 100 pF 6.8 pF 4.7 pF 3.3 pF
16-pin TSSOP 0603 0603 0603 0603 1210 0603
Wurth Elektronik Panasonic Mini-Circuits
(R)
74476401 EHF-FD1619 TC1-1 142-0701-851
1 H 1.2 pF
Johnson Components
SMA
8
ATR0786
4587B-SIGE-02/03
ATR0786
Figure 14. Demo Test Board
9
4587B-SIGE-02/03
Recommended Package Footprint
Notes: 1. Only ground signal traces are allowed directly under the package 2. Primary dimensions are in millimeter alternate dimensions are in inches
1.25
0.25 0.74 0.4 3.0 0.74
3.0
f0.33 via
0.7
0.9
6.9
all units are in mm - Indicates metalization - vias connect pad to underlying ground plane
Remark: Heatslug must be soldered to GND! Plugging of the ground vias under the heat slug is also recommended to avoid soldering problems.
10
ATR0786
4587B-SIGE-02/03
ATR0786
Ordering Information
Extended Type Number Package Remarks
ATR0786
TSSOP16
5.0 mm 6.4 mm
Package Information
11
4587B-SIGE-02/03
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Corporate Headquarters
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Atmel Operations
Memory
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Europe
Microcontrollers
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Asia
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e-mail
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Web Site
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(c) Atmel Corporation 2003. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel's Terms and Conditions located on the Company's web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical components in life support devices or systems.
Atmel (R) is the registered trademark of Atmel. Other terms and product names may be the trademarks of others. Printed on recycled paper.
4587B-SIGE-02/03 xM

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