AD6636PCB datasheet(4/72 Pages) AD

4 / 72 page

AD6636

Rev. 0 | Page 4 of 72

The overall filter response for the AD6636 is the composite of

all the combined filter stages. Each successive filter stage is

capable of narrower transition bandwidths, but requires a

greater number of CLK cycles to calculate the output. More

decimation in the first filter stage minimizes overall power

consumption. Data from the device is interfaced to a

DSP/FPGA/baseband processor via either high speed parallel

ports (preferred) or a DSP-compatible microprocessor interface.

The AD6636 is available both in 4-channel and 6-channel

versions. The data sheet primarily discusses the 6-channel part.

The only difference between the 6-channel and 4-channel

devices is that on the 4-channel version, Channels 4 and 5 are

not available (see Figure 1). The 4-channel device still has the

same input ports, output ports, and memory map. The memory

map section for Channels 4 and 5 can be programmed and read

back, but it serves no purpose.

PRODUCT HIGHLIGHTS

•

Six independent digital filtering channels

•

101 dB SNR noise performance, 110 dB spurious

performance

•

Four input ports capable of 150 MSPS input data rates

•

RMS/peak power monitoring of input ports and 96 dB

range AGCs before the output ports

•

Three programmable RAM coefficient filters, three half-

band filters, two fixed coefficient filters, and one fifth-order

CIC filter per channel

•

Complex filtering and biphase filtering (300 MSPS ADC

input) by combining filtering capability of multiple

channels

•

Three 16-bit parallel output ports operating at up to

200 MHz clock

•

Blackfin®- and TigerSHARC®-compatible 16-bit

microprocessor port

•

Synchronous serial communications port is compatible

with most serial interface standards, SPORT, SPI, and SSR

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