ADS8555SPM集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS8555SPM属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS8555SPM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

1• Six SAR ADCs Grouped in Three Pairs

• Maximum Data Rate Per Channel With Internal

Clock and Reference:

630 kSPS (Parallel) or 450 kSPS (Serial)

• Maximum Data Rate Per Channel With External

Clock and Reference:

800 kSPS (Parallel) or 500 kSPS (Serial)

• Pin-Selectable or Programmable Input Voltage

Ranges: Up to ±12 V

• Excellent AC Performance:

91.5-dB SNR, –94-dB THD

• Programmable and Buffered Internal Reference:

0.5 V to 2.5 V and 0.5 V to 3 V

• Comprehensive Power-Down Modes:

– Deep Power Down (Standby Mode)

– Auto-Nap Power Down

• Selectable Parallel or Serial Interface

• Operating Temperature Range: –40°C to 125°C

• LQFP-64 Package

2 Applications

• Power Quality Measurements

• Protection Relays

• Multi-Axis Motor Controls

• Programmable Logic Controllers

• Industrial Data Acquisition

3 Description

The ADS8555 device contains six low-power, 16-bit,

successive approximation register (SAR)-based

analog-to-digital converters (ADCs) with true bipolar

inputs. Each channel contains a sample-and-hold

circuit that allows simultaneous high-speed multichannel

signal acquisition.

The ADS8555 device supports data rates of up to

630 kSPS in parallel interface mode or up to

450 kSPS if the serial interface is used. The bus

width of the parallel interface can be set to eight or 16

bits. In serial mode, up to three output channels can

be activated.

The ADS8555 device is specified over the extended

industrial temperature range of –40°C to 125°C and is

available in an LQFP-64 package.