GENERAL DESCRIPTION

The AD977/AD977A is a high speed, low power 16-bit A/D converter that operates from a single 5 V supply. The AD977A has a throughput rate of 200 kSPS whereas the AD977 has a throughput rate of 100 kSPS. Each part contains a successive approximation, switched capacitor ADC, an internal 2.5 V reference, and a high speed serial interface. The ADC is factory calibrated to minimize all linearity errors. The AD977/AD977A is specified for full scale bipolar input ranges of ±10 V, ±5 V and ±3.3 V, and unipolar ranges of 0 V to 10 V, 0 V to 5 V and 0 V to 4 V.

The AD977/AD977A is comprehensively tested for ac parameters such as SNR and THD, as well as the more traditional dc parameters of offset, gain and linearity.

PRODUCT HIGHLIGHTS

1. Fast Throughput

   The AD977/AD977A is a high speed, 16-bit ADC based on

a factory calibrated switched capacitor architecture.

2. Single-Supply Operation

   The AD977/AD977A operates from a single 5 V supply and dissipates only 100 mW max.

3. Comprehensive DC and AC Specifications

   In addition to the traditional specifications of offset, gain and linearity, the AD977/AD977A is fully tested for SNR and THD.

  

FEATURES

  Fast 16-Bit ADC

     100 kSPS Throughput Rate—AD977

     200 kSPS Throughput Rate—AD977A

  Single 5 V Supply Operation

  Power Dissipation 100 mW Max

  Power-Down Mode 50 μW

  Input Ranges:

     Unipolar; 0 V–10 V, 0 V–5 V and 0 V–4 V

     Bipolar; ±10 V, ±5 V and ±3.3 V

  Choice of External or Internal 2.5 V Reference

  High Speed Serial Interface

  On-Chip Clock

  20-Lead Skinny DIP or SOIC Package

  28-Lead Skinny SSOP Package