ADS1120IRVA

更新时间： 2024-02-08 11:13:33

品牌	Logo	应用领域
德州仪器 - TI		转换器传感器
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ADS1220

www.ti.com

SBAS501A –MAY 2013–REVISED JULY 2013

Low-Power, Low-Noise, 24-Bit, Analog-to-Digital Converter for Small-Signal Sensors

FEATURES

DESCRIPTION

The ADS1220 is a precision, 24-bit, analog-to-digital

converter (ADC) offered in a leadless QFN-16 or a

TSSOP-16 package. The device features two

differential or four single-ended inputs through a very

•

Low Current Consumption:

–

Duty-Cycle Mode: 120 μA

Normal Mode: 415 μA

flexible input multiplexer (mux),

programmable gain amplifier

low-noise,

•

Wide Supply Range: 2.3 V to 5.5 V

Programmable Gain: 1 V/V to 128 V/V

Programmable Data Rates: Up to 2 kSPS

50-Hz and 60-Hz Rejection at 20 SPS

Low-Noise PGA: 90 nV_RMSat 20 SPS

(PGA), two

programmable excitation current sources, an internal

reference, an oscillator, a low-side bridge switch, and

a precision temperature sensor. The many integrated

features and the simple control of the ADS1220

through an SPI-compatible interface ease precision

measurements of the most common sensor signals.

Dual Matched Programmable Current Sources:

10 μA to 1500 μA

The device can perform conversions at data rates of

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

cycle settling. The internal PGA offers gains of up to

128 V/V. This PGA makes the ADS1220 ideally-

suited for applications measuring small signals, such

as thermocouples, resistance temperature detectors

(RTDs), thermistors, and bridge sensors. The device

supports true bipolar analog supplies in the event that

single-ended signals referenced to ground must be

measured using the PGA. Alternatively, the device

can be configured to bypass the internal PGA while

still providing gains of up to 4 V/V, allowing for rail-to-

rail input signals with no loss of signal integrity when

running from a single analog supply.

•

Internal Temperature Sensor:

0.5°C Error (max)

•

Low-Drift Internal Reference

Low-Drift Internal Oscillator

Two Differential or Four Single-Ended Inputs

SPI™-Compatible Interface

3,5 mm × 3,5 mm × 0,9 mm QFN Package

APPLICATIONS

•

Temperature Sensors:

–

Thermocouples

Resistance Temperature Detectors (RTDs)

2-, 3-, and 4-Wire RTD Excitation

The device operates in either duty-cycle mode

(consuming 120 µA of current), normal mode

(consuming 415 µA of current), or turbo mode (for

highest data rates). The ADS1220 operates over a

temperature range of –40°C to +125°C.

•

Bridge Sensors

Portable Instrumentation

Factory Automation and Process Control

REFP0

REFN0

AVDD

DVDD

10 ꢀA to

1.5 mA

Internal

Reference

Mux

Device

AIN0/REFP1

AIN1

Digital Filter

and

SCLK

24-bit

ûꢁꢀADC

Mux

PGA

DIN

SPI

DOUT/DRDY

DRDY

Interface

AIN2

Low Drift

Oscillator

Precision

Temp Sensor

AIN3/REFN1

AVSS

CLK

DGND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

SPI is a trademark of Motorola, Inc.

All other trademarks are the property of their respective owners.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...54

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与ADS1120IRVA相关器件

型号	品牌	获取价格	描述	数据表
ADS1120IRVAR	TI	获取价格	Low-Power, Low-Noise, 16-Bit, Analog-to-Digital Converter for Small-Signal Sensors
ADS1120IRVAT	TI	获取价格	Low-Power, Low-Noise, 16-Bit, Analog-to-Digital Converter for Small-Signal Sensors
ADS1120-Q1	TI	获取价格	适用于小信号传感器且具有 PGA 和基准电压的汽车类、16 位、2kSPS、4 通道、低功
ADS1120QPWRQ1	TI	获取价格	适用于小信号传感器且具有 PGA 和基准电压的汽车类、16 位、2kSPS、4 通道、低功
ADS-112883	DATEL	获取价格	Sampling A/D Converters
ADS-112-C/883	DATEL	获取价格	Sampling A/D Converters
ADS112C04	TI	获取价格	具有 PGA、VREF、2 个 IDAC 和 I2C 接口的 16 位 2kSPS 4 通
ADS112C04IPW	TI	获取价格	具有 PGA、VREF、2 个 IDAC 和 I2C 接口的 16 位 2kSPS 4 通
ADS112C04IPWR	TI	获取价格	具有 PGA、VREF、2 个 IDAC 和 I2C 接口的 16 位 2kSPS 4 通
ADS112C04IRTER	TI	获取价格	具有 PGA、VREF、2 个 IDAC 和 I2C 接口的 16 位 2kSPS 4 通

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