ADS122C04IPWR集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS122C04IPWR属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS122C04IPWR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• Current Consumption as Low as 315 μA (typ)

• Wide Supply Range: 2.3 V to 5.5 V

• Programmable Gain: 1 to 128

• Programmable Data Rates: Up to 2 kSPS

• Up to 20 Bits Effective Resolution

• Simultaneous 50-Hz and 60-Hz Rejection at

20 SPS With Single-Cycle Settling Digital Filter

• Two Differential or Four Single-Ended Inputs

• Dual-Matched Programmable Current Sources:

10 μA to 1.5 mA

• Internal 2.048-V Reference: 5 ppm/°C (typ) Drift

• Internal 2% Accurate Oscillator

• Internal Temperature Sensor:

0.5°C (typ) Accuracy

• I2C-Compatible Interface

• Supported I2C Bus Speed Modes:

Standard-Mode, Fast-Mode, Fast-Mode Plus

• 16 Pin-Configurable I2C Addresses

• Package: 3.0-mm × 3.0-mm × 0.75-mm WQFN

2 Applications

• Field Transmitters:

Temperature, Pressure, Strain, Flow

• PLC and DCS Analog Input Modules

• Temperature Controllers

• Heat Meters

• Patient Monitoring Systems:

Body Temperature, Blood Pressure

3 Description

The ADS122C04 is a precision, 24-bit, analog-todigital

converter (ADC) that offers many integrated

features to reduce system cost and component count

in applications measuring small sensor signals. The

device features two differential or four single-ended

inputs through a flexible input multiplexer (MUX), a

low-noise, programmable gain amplifier (PGA), two

programmable excitation current sources, a voltage

reference, an oscillator, and a precision temperature

sensor.

The device can perform conversions at data rates up

to 2000 samples-per-second (SPS) with single-cycle

settling. At 20 SPS, the digital filter offers

simultaneous 50-Hz and 60-Hz rejection for noisy

industrial applications. The internal PGA offers gains

up to 128. This PGA makes the ADS122C04 ideally

suited for applications measuring small sensor

signals, such as resistance temperature detectors

(RTDs), thermocouples, thermistors, and resistive

bridge sensors.

The ADS122C04 features a 2-wire, I2C-compatible

interface that supports I2C bus speeds up to 1 Mbps.

Two address pins allow selection of 16 different I2C

addresses for the device.

The ADS122C04 is offered in a leadless 16-pin

WQFN or a 16-pin TSSOP package and is specified

over a temperature range of –40°C to +125°C.