SA1620BE Datasheet
RF Transceiver, 2.5V|3.3V|5V|7.5V Supply Voltage, TQFP
Download: SA1620BE Datasheet 
SA1620BE
RF Transceiver, 2.5V|3.3V|5V|7.5V Supply Voltage, TQFP
INTEGRATED CIRCUITS
SA1620 Low voltage GSM front-end transceiver
Product specification Supersedes data of 1996 Oct 08 IC17 Data Handbook
1997 May 22
Philips Semiconductors
Low voltage GSM front-end transceiver
Product specification
SA1620
Description
The Sa1620 Is A Combined Receive (rx) And Transmit (tx) Front-end For Gsm Cellular Telephones. The
Receive Path Contains Two Low Noise Amplifiers (lna1 And Lna2) With Four Switchable Attenuation
Steps. A Gilbert Cell Mixer In The Receive Path Down-converts The Rf Signal To A First If Of 70 To
500 Mhz. A Second Gilbert Cell In The Transmit Path Transposes A Gmsk Or Phase Modulated If To Rf By
Image Reject Mixing And Has A Fixed If Of 400 Mhz. A Buffered Lo Signal Is Fed To Rx And Tx Mixers.
Rx or Tx path or the entire circuit may be powered-down.
FEATURES
Excellent noise figure:
LNAs matched to 50 with external matching components
LNAs with gain control, 59dB dynamic range in four discrete steps
LNA gain stability 0.5dB within -40 to 85 C
Feedthrough attenuation LNA1 to Rx mixer 35dB
Tx power adjustable from -3 to +12dBm by external resistor
Direct supply: 2.7V to 5.5V
Battery supply voltage VBATT = 3.3V to 7.5V or direct supply
Two DC regulators programmable for 3.0V, 3.4V, 3.7V or 5.1V
Low current consumption: 28mA for Rx or 59mA for Tx
Fully compatible with SA1638 GSM IF Digital I/Q circuit
Applications
900MHz front end for GSM hand-held units
Portable radio, TDMA systems
PIN CONFIGURATION
LQFP Package
VccL1 OUT1 GNDL1A GNDL1 IN1 RETx GNDTx3 TxO Tx0X GNDTx4 PDTx PONBUF
48 47 46 45 44 43 42 41 40 39 38 37
VCCL2 1 IN2 2