GENERAL DESCRIPTION

The AD9245 is a monolithic, single 3 V supply, 14-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital converter (ADC) featuring a high performance sample-andhold amplifier (SHA) and voltage reference. The AD9245 uses a multistage differential pipelined architecture with output error correction logic to provide 14-bit accuracy and guarantee no missing codes over the full operating temperature range.

FEATURES

Single 3 V supply operation (2.7 V to 3.6 V)

SNR = 72.7 dBc to Nyquist

SFDR = 83.0 dBc to Nyquist

Low power

366 mW at 80 MSPS

300 mW at 65 MSPS

165 mW at 40 MSPS

90 mW at 20 MSPS

Differential input with 500 MHz bandwidth

On-chip reference and sample-and-hold

DNL = ±0.5 LSB

Flexible analog input: 1 V p-p to 2 V p-p range

Offset binary or twos complement data format

Clock duty-cycle stabilizer

APPLICATIONS

Medical imaging equipment

IF sampling in communications receivers

WCDMA, CDMA-One, CDMA-2000, and TDS-CDMA

Battery-powered instruments

Hand-held scopemeters

Spectrum analyzers

Power-sensitive military applications

AD9245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AD9245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。