Philips SA1620
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.| Part No. | SA1620 |
|---|---|
| Datasheet | SA1620 Download |
| Manufacturer |  Philips |
| Description | Low voltage GSM front-end transceiver |
| Buy | Stock & Price |
DESCRIPTION
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.● 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
FEATURES
● Excellent noise figure: <2dB for the LNAs at 950MHz● LNAs matched to 50Ω 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 PIN CONFIGURA...
