GENERAL DESCRIPTION

The AD9645 is a dual, 14-bit, 80 MSPS/125 MSPS analog-to-digital converter (ADC) with an on-chip sample-and-hold circuit designed for low cost, low power, small size, and ease of use. The product operates at a conversion rate of up to 125 MSPS and is optimized for outstanding dynamic performance and low power in applications where a small package size is critical.

FEATURES

1.8 V supply operation

Low power: 122 mW per channel at 125 MSPS with scalable

power options

SNR = 74 dBFS (to Nyquist)

SFDR = 91 dBc at 70 MHz

DNL = ±0.65 LSB (typical); INL = ±1.5 LSB (typical)

Serial LVDS (ANSI-644, default) and low power, reduced

range option (similar to IEEE 1596.3)

650 MHz full power analog bandwidth

2 V p-p input voltage range

Serial port control

Full chip and individual channel power-down modes

Flexible bit orientation

Built-in and custom digital test pattern generation

Clock divider

Programmable output clock and data alignment

Programmable output resolution

Standby mode

APPLICATIONS

Communications

Diversity radio systems

Multimode digital receivers

GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA

I/Q demodulation systems

Smart antenna systems

Broadband data applications

Battery-powered instruments

Handheld scope meters

Portable medical imaging and ultrasound

Radar/LIDAR

AD9645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AD9645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。