GENERAL DESCRIPTION

The AD7264 is a dual, 14-bit, high speed, low power, successive approximation ADC that operates from a single 5 V power supply and features throughput rates of up to 1 MSPS per on-chip ADC (500 kSPS for the AD7264-5). Two complete ADC functions allow simultaneous sampling and conversion of two channels. Each ADC is preceded by a true differential analog input with a PGA. There are 14 gain settings available: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128.

FEATURES

Dual, simultaneous sampling, 14-bit, 2-channel ADC

True differential analog inputs

Programmable gain stage: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16,

×24, ×32, ×48, ×64, ×96, ×128

Throughput rate per ADC

1 MSPS for AD7264

500 kSPS for AD7264-5

Analog input impedance: >1 GΩ

Wide input bandwidth

−3 dB bandwidth: 1.7 MHz at gain = 2

4 on-chip comparators

SNR: 78 dB typical at gain = 2, 71 dB typical at gain = 32

Device offset calibration

System gain calibration

On-chip reference: 2.5 V

−40°C to +105°C operation

High speed serial interface

Compatible with SPI, QSPI™, MICROWIRE™, and DSP

48-lead LFCSP and LQFP packages

AD7264BSTZ-5-RL7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AD7264BSTZ-5-RL7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。