Texas Instruments ADS7042 超低功耗 SAR 模数转换器(ADC)
德州仪器 ADS7042 超低功耗 SAR 模数转换器(ADC)是 12 位、1MSPS ADC,它支持宽幅模拟输入电压范围(1.8V 到 3.6V),并包含一个带固有采样保持电路的电容式、逐次逼近寄存器(SAR)的 ADC。SPI 兼容串行接口通过 CS 和 SCLK 信号进行控制。输入信号随 CS 下降沿一起得到采样,而 SCLK 用于转换和串行数据输出。该器件支持宽幅数字电源范围(1.65V 到 3.6V),从而实现与多种主控制器的连接。对于普通 DVDD 范围(1.65V 到 1.95V),ADS7042 遵循 JESD8-7A 标准。特性
- SAR ADC with Nanowatt Power Consumption
- 234µW at 1MSPS with 1.8V AVDD
- 690µW at 1MSPS with 3V AVDD
- 69µW at 100kSPS with 3V AVDD
- Less than 1µW at 1kSPS with 3V AVDD
- Small SAR ADC
- X2QFN-8 Package with 2.25mm2 Footprint
- 1MSPS Throughput with Zero Data Latency
- Wide Operating Range
- 1.8V to 3.6V AVDD
- 1.65V to 3.6V (Independent of AVDD) DVDD
- -40°C to +125°C Temperature Range
- Excellent Performance
- 12-Bit Resolution with NMC
- ±1LSB (Max) DNL and INL
- 70dB SNR with 3V AVDD
- -80dB THD with 3V AVDD
- 0V to AVDD Unipolar Input Range
- Integrated Offset Calibration
- 16MHz SPI™-Compatible Serial Interface
- JESD8-7A Compliant Digital I/O
应用
- Low-Power Data Acquisition
- Battery-Powered Handheld Equipment
- Level Sensors
- Ultrasonic Flow Meters
- Motor Control
- Wearable Fitness
- Portable Medical Equipment
- Hard Drives
- Glucose Meters
Block Diagram
发布日期: 2014-09-16
| 更新日期: 2022-03-11
