1FEATURES

· 3-MHz Sample Rate, 12-Bit Resolution

· Zero Latency

· Unipolar, Pseudo Differential Input, Range:

– 0 V to 2.5 V

· High-Speed Parallel Interface

· 69.5 dB SNR at 100 kHz I/P

· Power Dissipation 85 mW at 3 MSPS

· Nap Mode (10 mW Power Dissipation)

· Power Down (10 mW)

· Internal Reference

· Internal Reference Buffer

· 48-Pin TQFP Package

APPLICATIONS

· Optical Networking (DWDM, MEMS Based

Switching)

· Spectrum Analyzers

· High Speed Data Acquisition Systems

· High Speed Close-Loop Systems

· Telecommunication

· Ultra-Sound Detection

DESCRIPTION

The ADS7882 is a 12-bit 3-MSPS A-to-D converter

with 2.5-V internal reference. The device includes a

capacitor based SAR A/D converter with inherent

sample and hold. The device offers a 12-bit parallel

interface with an additional byte mode that provides

easy interface with 8-bit processors. The device has

a pseudo-differential input stage.

The –IN swing of ±200 mV is useful to compensate

for ground voltage mismatch between the ADC and sensor and also to cancel common-mode noise. With

nap mode enabled, the device operates at lower

power when used at lower conversion rates. The

device is available in 48-pin TQFP package.