ADS7028集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS7028属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS7028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。

1 Features

• Small package size:

– WQFN 3mm × 3mm

• 8 channels configurable as any combination of:

– Up to 8 analog inputs, digital inputs, or digital

outputs

• GPIOs for I/O expansion:

– Open-drain, push-pull digital outputs

• Analog watchdog:

– Programmable thresholds per channel

– Event counter for transient rejection

• Wide operating ranges:

– AVDD: 2.35V to 5.5V

– DVDD: 1.65V to 5.5V

– –40°C to +125°C temperature range

• Enhanced-SPI digital interface:

– High-speed, 60MHz interface

– Achieve full throughput with >13.5MHz SPI

• CRC for read/write operation:

– CRC on data read/write

– CRC on power-up configuration

• Programmable averaging filters:

– Programmable sample size for averaging

– Averaging with internal conversions

– 16-bit resolution

2 Applications

• Macro remote radio units (RRU)

• Battery management systems (BMS)

• String inverters

• Central inverters

3 Description

The ADS7038 is an easy-to-use, 8-channel,

multiplexed, 12-bit, successive approximation register

analog-to-digital converter (SAR ADC). The eight

channels can be independently configured as either

analog inputs, digital inputs, or digital outputs.

The device has an internal oscillator for the ADC

conversion process.

The ADS7038 communicates through an SPIcompatible

interface and operates in either

autonomous or single-shot conversion mode. The

ADS7038 implements the analog watchdog function

by event-triggered interrupts per channel using a

digital window comparator with programmable high

and low thresholds, hysteresis, and an event counter.

The ADS7038 has a built-in cyclic redundancy check

(CRC) for data read/write operations and the powerup

configuration.