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AD6121 Datasheet

Part Number AD6121
Manufacturers Analog Devices
Logo Analog Devices
Description CDMA 3 V Receiver IF Subsystem with Integrated Voltage Regulator
Datasheet AD6121 DatasheetAD6121 Datasheet (PDF)

a FEATURES Fully Compliant with IS98A and PCS Specifications CDMA, W-CDMA, AMPS, and TACS Operation Linear IF Amplifier 5.9 dB Noise Figure –47.5 dB to +47 dB Linear-in-dB Gain Control Quadrature Demodulator Demodulates IFs from 50 MHz to 350 MHz Integral Low Dropout Regulator 200 mV Voltage Drop Accepts 2.9 V to 4.2 V Input from Battery Low Power 10 mA at Midgain <1 ␮ A Sleep Mode Operation Companion Transmitter IF Chip Available (AD6122) APPLICATIONS CDMA, W-CDMA, AMPS, and TACS Operation QPSK.

  AD6121   AD6121






Part Number AD6122
Manufacturers Analog Devices
Logo Analog Devices
Description CDMA 3 V Transmitter IF Subsystem with Integrated Voltage Regulator
Datasheet AD6121 DatasheetAD6122 Datasheet (PDF)

a FEATURES Fully Compliant with IS98A and PCS Specifications Linear IF Amplifier –63 dB to +34 dB Linear-in-dB Gain Control Temperature-Compensated Gain Control Quadrature Modulator Modulates IFs from 50 MHz to 350 MHz Integral Low Dropout Regulator Accepts 2.9 V to 4.2 V Input from Battery Low Power 10.4 mA at Midgain <10 ␮ A Sleep Mode Operation Companion Receiver IF Chip Available (AD6121) APPLICATIONS CDMA, W-CDMA, AMPS and TACS Operation QPSK Transmitters GENERAL DESCRIPTION CDMA 3 V Trans.

  AD6121   AD6121







CDMA 3 V Receiver IF Subsystem with Integrated Voltage Regulator

a FEATURES Fully Compliant with IS98A and PCS Specifications CDMA, W-CDMA, AMPS, and TACS Operation Linear IF Amplifier 5.9 dB Noise Figure –47.5 dB to +47 dB Linear-in-dB Gain Control Quadrature Demodulator Demodulates IFs from 50 MHz to 350 MHz Integral Low Dropout Regulator 200 mV Voltage Drop Accepts 2.9 V to 4.2 V Input from Battery Low Power 10 mA at Midgain <1 ␮ A Sleep Mode Operation Companion Transmitter IF Chip Available (AD6122) APPLICATIONS CDMA, W-CDMA, AMPS, and TACS Operation QPSK Receivers CDMA 3 V Receiver IF Subsystem with Integrated Voltage Regulator AD6121 GENERAL DESCRIPTION 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 powerdown control input. An integral low dropout regulator allows operation from battery voltages from 2.9 V to 4.2 V. The gain control input accepts an external gain control voltage input from a DAC. It provides 94.5 dB of gain control with a nominal 52.5 dB/V scale factor when using an internal voltage reference. The gain control interface reference input can be connected to either the internal reference or an external reference. The I and Q demodulator provides differential quadrature baseband outputs to interface with CDMA baseband converters. A divide-by-two quadrature generator followed by dual polyphase filters ensures maximum ± 2.5° quadrat.


2005-03-23 : 2N2857CSM    2N2880    2N2891    2N2894    2N2894    2N2894    2N2894A    2N2894ACSM    2N2894CSM    2N2894DCSM   


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