ADS114S08BIRHBT集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS114S08BIRHBT属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS114S08BIRHBT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• Low power consumption: as low as 280 μA

• Programmable gain: 1 to 128

• Programmable data rates: 2.5 SPS to 4 kSPS

• Simultaneous 50-Hz and 60-Hz rejection at

≤ 20 SPS with low-latency digital filter

• Analog multiplexer with 12 (ADS114S08B) or 6

(ADS114S06B) independently selectable inputs

• Dual-matched programmable current sources for

sensor excitation: 10 μA to 2000 μA

• Internal reference: 2.5 V, 8 ppm/°C (typ) drift

• Internal oscillator: 4.096 MHz, 2% accuracy

• Internal temperature sensor

• Self offset and system calibration

• Four general-purpose i/os

• SPI-compatible interface

• Analog supply: unipolar (2.7 V to 5.25 V) or

bipolar (±2.5 V)

• Digital supply: 2.7 V to 3.6 V

• Operating temperature: –40°C to +125°C

• Pin-compatible with the ADS114S0x

2 Applications

• Field transmitters:

temperature, pressure, strain, flow

• PLC and DCS analog input modules

• Temperature controllers

• Climate chambers, industrial ovens

3 Description

The ADS114S06B and ADS114S08B are precision,

16-bit, delta-sigma (ΔΣ), analog-to-digital converters

(ADCs) that offer low power consumption and many

integrated features to reduce system cost and

component count in applications measuring smallsignal

sensors.

These ADCs feature a digital filter that offers lowlatency

conversion results and 50-Hz or 60-Hz

rejection for noisy industrial environments. A lownoise,

programmable gain amplifier (PGA) provides

gains ranging from 1 to 128 to amplify low-level

signals for resistive bridge or thermocouple

applications. Additionally, these devices integrate a

low-drift, 2.5-V reference that reduces printed circuit

board (PCB) area. Finally, two programmable

excitation current sources (IDACs) allow for easy and

accurate RTD biasing.

An input multiplexer supports 12 inputs for the

ADS114S08B and six inputs for the ADS114S06B

that can be connected to the ADC in any combination

for design flexibility. In addition, these devices include

features such as sensor burn-out detection, voltage

bias for thermocouples, system monitoring, and four

general-purpose I/Os (GPIOs).

The devices are offered in a leadless VQFN-32 or a

TQFP-32 package.