ADS7881 Datasheet PDF - TI

●The ADS7881 is a 12-bit 4-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 a 48-pin TQFP package.

● 4 MHz Sample Rate, 12-Bit Resolution

● Zero Latency

● Unipolar, Pseudo Differential Input, Range:

● 0 V to 2.5 V

● High Speed Parallel Interface

● 71 dB SNR and –88.5 dB THD at 1 MHz I/P

● Power Dissipation 95 mW at 4 MSPS

● Nap Mode (10 mW Power Dissipation)

● Power Down (10 µW)

● 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