数字上变频器和下变频器

Analog Devices, Inc.(简称ADI)的上变频器和下变频器可用作频率转换器和数据转换器与DSP模块之间的数字滤波器。这些创新的产品能够帮助实现高度可编程和可配置的接收和发送信号链,从而允许3G无线基站中使用多通道、多载波无线电平台。它们还能够满足许多其它通信应用对数字数据转换的要求。

DDC

Generic Part # MSPS GSM, EDGE/GPRS CDMA2000 UMTS TDS-CDMA
      1x 3x    
AD6620 65 1 Channel (main and diversity) 1 Channel 2 samples per chip 1 Channel with FPGA to finish filtering 2 samples per chip 1 Channel with FPGA to finish filtering 2 samples per chip 1 Channel
AD6624 80 4 Channels 2 samples per symbol 2 Channels 2 samples per chip 1 Channel with FPGA for serial to parallel conversion 2 samples per chip 1 Channel with FPGA for serial to parallel conversion 2 samples per chip 4 Channels 1 sample per chip
AD6624A 100 2 Channels with FPGA for serial to parallel conversion 2 samples per chip
AD6634 80 4 Channels 2 samples per symbol 2 Channels 4 samples per chip Digital AGC 2 Channels 4 samples per chip Digital AGC 2 Channels 4 samples per chip Digital AGC 4 Channels 1 sample per chip
AD6635 80 8 Channels 2 samples per symbol 4 Channels 4 samples per chip Digital AGC 4 Channels 4 samples per chip Digital AGC 4 Channels 4 samples per chip Digital AGC 8 Channels 1 sample per chip
AD6636 150 6 Channels 4 / 8 samples per symbol 6 Channels 4 samples per chip Digital AGC 6 Channels 4 samples per chip Digital AGC 6 Channels 4 samples per chip Digital AGC 6 Channels 1 / 2 / 4 samples per chip

DUCs

Generic Part # MSPS GSM, EDGE/GPRS CDMA2000 UMTS TDS-CDMA
      1x 3x    
AD6622

75

4 Channels

Serial output

2 Channels

Serial output

1 Channel

Serial output

1 Channel

Serial output

4 Channels

Serial output

AD6623 104

4 Channels

Modulate using I/Q symbols

Direct modulation xPSK

Mode switching

Power Ramping

2 Channels (real output)

Serial output

Includes IIR filter for phase pre-distortion

2 Channels (real output)

Serial output

2 Channels (real output)

Serial output

4 Channels

Serial output

Power Ramping

Direct modulation

AD6633 125

6 Channels

Modulated I/Q data

VersaCREST™ Crest Reduction Engine

IF/RF compensation using complex filter

6 Channels

Modulated I/Q data

VersaCREST™ Crest Reduction Engine

Includes IIR filter for phase pre-distortion

6 Channels

Modulated I/Q data

VersaCREST™ Crest Reduction Engine

IF/RF compensation using complex filter

6 Channels

Modulated I/Q data

VersaCREST™ Crest Reduction Engine

IF/RF compensation using complex filter

6 Channels

Modulated I/Q data

VersaCREST™ Crest Reduction Engine

IF/RF compensation using complex filter

DUC

Generic Part # MSPS GSM, EDGE/GPRS CDMA2000 UMTS TDS-CDMA
      1x 3x    
AD6652 65 4 Channels 2 samples per symbol 2 Channels with some external filtering 4 samples per chip Digital AGC 2 Channels with some external filtering 4 samples per chip Digital AGC 2 Channels with some external filtering 4 samples per chip Digital AGC 4 Channels 1 sample per chip
AD6653 150 2 x 6 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor 2 x 12 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor 2 x 6 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor 2 x 4 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor 2 x 12 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor
AD6654 92.16 6 Channels 4 / 8 samples per symbol 6 Channels 4 samples per chip Digital AGC 6 Channels 4 samples per chip Digital AGC 6 Channels 4 samples per chip Digital AGC 6 Channels 1 / 2 / 4 samples per chip
AD6655 150 2 x 6 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor 2 x 12 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor 2 x 6 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor 2 x 4 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor 2 x 12 Channels - external Channelization Filters Required Fast Level Detect and Power Monitor

QDUC

Generic Part # Master Clock (MSPS min) Power Supply Voltage (Vnom) Power Dissipation (mW max) Description
AD9856 200 Single (+3) 1590 200 MHz Quadrature Digital Upconverter With 12-Bit Data Path
AD9857 200 Single (3.3 V) 2029 200 MSPS Quadrature Digital Upconverter with 14-bit Data Path
AD9957 1000 Multi (1.8, 3.3) 1800 1 GSPS Quadrature Digital Upconverter with 18-Bit IQ Data Path and 14-Bit DAC