AD6650:  Diversity IF-to-Baseband GSM/EDGE Narrow-Band Receiver

The AD6650 is a diversity intermediate frequency-to-baseband(IF-to-baseband) receiver for GSM/EDGE. This narrow-band receiver consists of an integrated DVGA, IF-to-baseband I/Q demodulators, low-pass ...More

AD6650:  Diversity IF-to-Baseband GSM/EDGE Narrow-Band Receiver

Product Description

The AD6650 is a diversity intermediate frequency-to-baseband(IF-to-baseband) receiver for GSM/EDGE. This narrow-band receiver consists of an integrated DVGA, IF-to-baseband I/Q demodulators, low-pass filtering, and a dual wideband ADC. The chip can accommodate IF input from 70 MHz to 260 MHz. The receiver architecture is designed such that only one external surface acoustic wave (SAW) filter for main and one for diversity are required in the entire receive signal path to meet GSM/EDGE blocking requirements.

Digital decimation and filtering circuitry provided on-chip remove unwanted signals and noise outside the channel of interest. Programmable RAM coefficient filters allow antialiasing, matched filtering, and static equalization functions to be combined in a single cost-effective filter. The output of the channel filters is provided to the user via serial output I/Q data streams.

Applications

  • PHS or GSM/EDGE single carrier, diversity receivers
  • Microcell and picocell systems Wireless local loop
  • Smart antenna systems
  • Software radios In-building wireless telephony

Data Sheet, Rev. A, 1/07

Features

  • 116 dB dynamic range
  • Digital VGA
  • I/Q demodulators
  • Active low-pass filters
  • Dual wideband ADC
  • Programmable decimation and channel filters
  • VCO and phase-locked loop circuitry
  • Serial data output ports

Diagrams

AD6650 Diagram
Functional Block Diagram for AD6650

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Download this Selection Table
(pdf, 22,589 bytes)

Last Updated: 9/2007
DDCs
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
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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
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Integrated ADC/DDC Receivers
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
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QDUCs
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
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**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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