GENERAL DESCRIPTION

The AD7667is a 16-bit, 1 MSPS, 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, internal reference, error correction circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Warp), a fast mode (Normal) for asynchronous applications, and a reduced power mode (Impulse) for low power applications where power is scaled with the throughput. The AD7667 is hardware factory-calibrated and comprehensively tested to ensure ac parameters such as signal-to-noise ratio (SNR) and total harmonic distortion (THD) in addition to the more traditional dc parameters of gain, offset, and linearity. Operation is specified from –40°C to +85°C.

FEATURES

2.5 V internal reference: typical drift 3 ppm/°C

Guaranteed max drift 15 ppm/°C

Throughput:

1 MSPS (Warp mode)

800 kSPS (Normal mode)

666 kSPS (Impulse mode)

INL: ±2.0 LSB max (±0.0038 of full scale)

16-bit resolution with no missing codes

S/(N+D): 88 dB min @ 20 kHz

THD: –96 dB max @ 20 kHz

Analog input voltage range: 0 V to 2.5 V

No pipeline delay

Parallel and serial 5 V/3 V interface

SPI®/QSPI

TM

/MICROWIRE

TM

/DSP compatible

Single 5 V supply operation

Power dissipation

87 mW typ @ 666 kSPS, 130 µW @ 1 kSPS without REF

133 mW typ @1 MSPS with REF

48-lead LQFP and 48-lead LFCSP packages

Pin-to-pin compatible with AD7671, AD7677

APPLICATIONS

Data acquisition

Medical instruments

Digital signal processing

Battery-powered systems

Process control

AD7663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AD7663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。