GENERAL DESCRIPTION

The AD7664 is a 16-bit, 570 kSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. The part contains a high speed 16-bit sampling ADC, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.

The AD7664 is hardware factory-calibrated and is comprehensively tested to ensure such ac parameters as signal-to-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity.

It features a very high sampling rate mode (Warp), a fast mode (Normal) for asynchronous conversion rate applications, and for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput.

It is fabricated using Analog Devices’ high performance, 0.6 micron CMOS process, with correspondingly low cost and is available in a 48-lead LQFP and a tiny 48-lead LFCSP with operation specified from –40°C to +85°C.

FEATURES

Throughput:

570 kSPS (Warp Mode)

500 kSPS (Normal Mode)

444 kSPS (Impulse Mode)

INL: ±2.5 LSB Max (±0.0038 of Full Scale)

16-Bit Resolution with No Missing Codes

S/(N+D): 90 dB Typ @ 45 kHz

THD: –100 dB Typ @ 45 kHz

Analog Input Voltage Range: 0 V to 2.5 V

Both AC and DC Specifications

No Pipeline Delay

Parallel and Serial 5 V/3 V Interface

SPI®/QSPI™/MICROWIRE™/DSP Compatible

Single 5 V Supply Operation

Power Dissipation

115 mW Maximum,

21 μW @ 100 SPS

Power-Down Mode: 7 W Max

Package: 48-Lead Quad Flat Pack (LQFP)

48-Lead Chip Scale Package (LFCSP)

Pin-to-Pin Compatible Upgrade of the AD7660

APPLICATIONS

Data Acquisition

Instrumentation

Digital Signal Processing

Spectrum Analysis

Medical Instruments

Battery-Powered Systems

Process Control

AD7667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AD7667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。