GENERAL DESCRIPTION

The AD9221, AD9223, and AD9220 are a generation of high performance, single supply 12-bit analog-to-digital converters. Each device exhibits true 12-bit linearity and temperature drift performance1 as well as 11.5-bit or better ac performance.2 The AD9221/AD9223/AD9220 share the same interface options, package, and pinout. Thus, the product family provides an upward or downward component selection path based on performance, sample rate and power. The devices differ with respect to their specified sampling rate, and power consumption, which is reflected in their dynamic performance over frequency.

The AD9221/AD9223/AD9220 combine a low cost, high speed CMOS process and a novel architecture to achieve the resolution and speed of existing hybrid and monolithic implementations at a fraction of the power consumption and cost. Each device is a complete, monolithic ADC with an on-chip, high performance, low noise sample-and-hold amplifier and programmable voltage reference. An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the application. The devices use a multistage differential pipelined architecture with digital output error correction logic to provide 12-bit accuracy at the specified data rates and to guarantee no missing codes over the full operating temperature range.

FEATURES

Monolithic 12-Bit A/D Converter Product Family

Family Members Are: AD9221, AD9223, and AD9220

Flexible Sampling Rates: 1.5 MSPS, 3.0 MSPS, and

10.0 MSPS

Low Power Dissipation: 59 mW, 100 mW, and 250 mW

Single 5 V Supply

Integral Nonlinearity Error: 0.5 LSB

Differential Nonlinearity Error: 0.3 LSB

Input Referred Noise: 0.09 LSB

Complete On-Chip Sample-and-Hold Amplifier and

Voltage Reference

Signal-to-Noise and Distortion Ratio: 70 dB

Spurious-Free Dynamic Range: 86 dB

Out-of-Range Indicator

Straight Binary Output Data

28-Lead SOIC and 28-Lead SSOP

AD9220ARS属于集成电路（IC） > 模数转换器（ADC）。亚德诺半导体技术有限公司制造生产的AD9220ARS模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。