ADS7883中文资料2.7V-5.5V 12 位 3MSPS 串行 ADC数据手册TI规格书

描述 Description

The ADS7883 is a 12-bit, 3-MSPS analog-to-digital converter (ADC). The devices include a capacitor based SAR A/D converter with inherent sample and hold. The serial interface in each device iscontrolled by theCSand SCLK signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling edge of CS, and SCLK is used for conversion and serial data output.
The devicesoperate from awide supply range from 2.7 V to 5.5 V. The low power consumption of the devices make them suitable for battery-powered applications.The devices also includea power saving powerdown feature for when the devices are operated at lower conversion speeds.
The high level of the digital input to the device is not limited to device VDD. This means the digital input can go as high as 5.5 V when device supply is 2.7 V. This feature is useful when digital signals are coming from other circuit with different supply levels.Also this relaxes restriction on power up sequencing.
The ADS7883 is available in a 6-pin SOT23package and are specified for operation from -40°C to 125°C.

特性 Features

• 3-MHz Sample Rate Serial Device
• Zero Latency
• Supply Range: 2.7 V to 5.5 V
• 13.5 mw at 5-V VDD, 3 MSPS
• 72 dB SINAD, -84 dB THD
• Power-Down Current: 1 µA
• 6-Pin SOT23Package
• Motor Current/Bus Voltage Sensors in Digital Drives
• Optical Sensors
• Medical Instrumentations
• High-Speed Closed-Loop Systems

简介

ADS7883属于集成电路（IC）的模数转换器（ADC）。由TI制造生产的ADS7883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。