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AD6642

Analog Devices
Part Number AD6642
Manufacturer Analog Devices
Description Dual IF Receiver
Published Feb 9, 2010
Detailed Description FEATURES 11-bit, 200 MSPS output data rate per channel Integrated noise shaping requantizer (NSR) Performance with NSR e...
Datasheet PDF File AD6642 PDF File

AD6642
AD6642

Overview
FEATURES 11-bit, 200 MSPS output data rate per channel Integrated noise shaping requantizer (NSR) Performance with NSR enabled SNR: 75.
5 dBFS in 40 MHz band to 70 MHz @ 185 MSPS SNR: 73.
7 dBFS in 60 MHz band to 70 MHz @ 185 MSPS Performance with NSR disabled SNR: 66.
5 dBFS to 70 MHz @ 185 MSPS SFDR: 83 dBc to 70 MHz @ 185 MSPS Low power: 0.
62 W @ 185 MSPS 1.
8 V analog supply operation 1.
8 V LVDS (ANSI-644 levels) output 1-to-8 integer clock divider Internal ADC voltage reference 1.
75 V p-p analog input range (programmable to 2.
0 V p-p) Differential analog inputs with 800 MHz bandwidth 95 dB channel isolation/crosstalk Serial port control User-configurable built-in self-test (BIST) capability Energy-saving power-down modes APPLICATIONS Communications Diversity radio and smart antenna (MIMO) systems Multimode digital receivers (3G) WCDMA, LTE, CDMA2000 WiMAX, TD-SCDMA I/Q demodulation systems General-purpose software radios Dual IF Receiver AD6642 DATA MULTIPLEXER AND LVDS DRIVERS 08563-001 FUNCTIONAL BLOCK DIAGRAM AVDD AGND DRVDD DRGND VIN+A VIN–A VCMA VIN+B VIN–B VCMB AD6642 14 11 PIPELINE NOISE SHAPING ADC REQUANTIZER 14 PIPELINE NOISE SHAPING 11 ADC REQUANTIZER REFERENCE SERIAL PORT CLOCK DIVIDER DC0±AB D0±AB D10±AB MODE SYNC PDWN SCLK SDIO CSB Figure 1.
CLK+ CLK– PRODUCT HIGHLIGHTS 1.
Two ADCs are contained in a small, space-saving, 10 mm × 10 mm × 1.
4 mm, 144-ball CSP_BGA package.
2.
Pin selectable noise shaping requantizer (NSR) function that allows for improved SNR within a reduced bandwidth of up to 60 MHz at 185 MSPS.
3.
LVDS digital output interface configured for low cost FPGA families.
4.
120 mW per ADC core power consumption.
5.
Operation from a single 1.
8 V supply.
6.
Standard serial port interface (SPI) that supports various product features and functions, such as data formatting (offset binary or twos complement), NSR, power-down, test modes, and voltage reference mode.
7.
On-chip integer 1-to-8 input clock divider and multichip s...


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