ADC Single SAR 3Msps 12-bit Parallel 48-Pin TQFP T/R

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.

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 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