ADS7882 Datasheet | Texas Instruments

FEATURES - 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 d B SNR at 100 k Hz I/P - Power Dissipation 85 m W at 3 MSPS - Nap Mode (10 m W 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 - Telemunication - 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 m V is useful to pensate for ground voltage mismatch between the ADC and sensor and also to cancel mon-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. +IN + - IN _ REFIN REFOUT CDAC parator Output Latches and 3-State Drivers BYTE 12/8-Bit Parallel Data Output Bus CLOCK 2.5 V Internal Reference Conversion and Control...