AD977A

NOT RECOMMENDED FOR NEW DESIGNS

16-Bit, 200 kSPS, Serial I/O A/D Converter

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Overview

  • 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
  • Automatic test equipment
  • Process control and industrial automation
  • 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

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.

AD977A
16-Bit, 200 kSPS, Serial I/O A/D Converter
AD977/AD977A Functional Block Diagram
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Hardware Ecosystem

Parts Product Life Cycle Description
LTC1609 PRODUCTION 16-Bit, 200ksps, Serial Sampling ADC with Multiple Input Ranges
AD7663 PRODUCTION 16-Bit Bipolar 250 kSPS PulSAR® CMOS ADC
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