AD6121 is a CDMA 3 V Receiver IF Subsystem with Integrated Voltage Regulator from Analog Devices. It fully complies with IS98A and PCS specifications, supporting CDMA, W-CDMA, AMPS and TACS operation.
The AD6121 is a low power receiver IF subsystem specifically designed for CDMA applications. It consists of high dynamic range IF amplifiers with voltage controlled gain, a divide-by-two quadrature generator, an I and Q demodulator, and a power-down control input. An integral low dropout regulator allows operation from battery voltages from 2.9 V to 4.2 V.
The device is fabricated using a 25 GHz fT BiCMOS silicon process and is available in a 28-lead SSOP and a 32-leadless LPCC chip scale package. It supports CDMA, W-CDMA, AMPS, and TACS operation with a noise figure of 5.9 dB.
| Noise Figure | 5.9 dB |
|---|---|
| Operating Temperature Range | -40°C to +85°C |
| Supply Current | 10 mA |
| Gain Control Range | -47.5 dB to +47 dB |
| Input Third-Order Intercept | 42.8 dBm |
The supply range using the internal LDO is 2.9 V to 5.0 V.
It supports CDMA, W-CDMA, AMPS, and TACS operation.
The maximum gain for the IF amplifiers and demodulator powered up is +47 dB.