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Description:Broadband Modem Mixed-Signal Front End
Manufacturer:Analog Devices
Datasheet:PDF (1.36M).
Click here to download *)

The AD9975 is a single-supply, broadband modem, mixed signal, front end (MxFETM) IC. The device contains a transmit path interpolation filter and DAC and a receive path PGA, LPF, and ADC required for a variety of broadband modem applications. Also on-chip is a PLL clock multiplier that provides all required clocks from a single crystal or clock input. The TxDAC+ uses a digital 2x interpolation low-pass filter to oversample the transmit data and ease the complexity of analog reconstruction filtering. The transmit path bandwidth is 21 MHz when sampled at 100 MSPS. The 10-bit DAC provides differential current outputs. The DAC full-scale current can be adjusted from 2 to 20 mA by a single resistor, providing 20 dB of additional gain range.

Click here to download AD9975 Datasheet
Click here to download AD9975 Datasheet
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