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

AD977BR屬于集成電路（IC） > 模數轉換器（ADC）。亞德諾半導體技術有限公司制造生產的AD977BR模數轉換器（ADC）模數轉換器（ADC、A/D 或 A 轉 D）對模擬信號進行采樣，例如由麥克風采集的聲音或傳感器的輸出，然后將其轉換為數字信號。一般來說，數字輸出是二進制補碼二進制數，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數轉換器可按照位數、采樣率、輸入數、接口、轉換器數和架構（例如自適應增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進行選擇。