Datasheet > ADS125H01_V01

ADS125H01_V01

更新时间： 2024-11-19 02:52:27

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德州仪器 - TI		/
页数	文件大小	规格书
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描述
ADS125H01 Â±20-V Input, 40-kSPS, 24-Bit, Delta-Sigma ADC

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ADS125H01_V01 数据手册

ADS125H01

_{SBAS999A – JUNE 2019 – REVISED}A_JAD_NS_UA1_R2_Y5H₂₀0₂1₁

SBAS999A – JUNE 2019 – REVISED JANUARY 2021

www.ti.com

ADS125H01 ±20-V Input, 40-kSPS, 24-Bit, Delta-Sigma ADC

1 Features

3 Description

•

±20-V input, 24-bit delta-sigma ADC

The ADS125H01 is a ±20-V input, 24-bit, delta-sigma

(ΔΣ) analog-to-digital converter (ADC). The ADC

features a low-noise programmable gain amplifier

(PGA), a clock oscillator, and signal or reference out-

of-range monitors.

Programmable data rate: 2.5 SPS to 40 kSPS

High-voltage, 1-GΩ input impedance PGA:

– Differential input range: up to ±20 V

– Absolute input range: up to ±15.5 V

– Programmable attenuation and gain:

The integration of a wide input range, ±18-V supply

PGA and an ADC into a single package reduces

board area up to 50% compared to discrete solutions.

•

0.125 to 128

•

High-performance ADC:

– Noise: 45 nV_RMS(gain = 128, 20 SPS)

– CMRR: 105 dB

– 50-Hz and 60-Hz rejection: 95 dB

– Offset drift: 10 nV/°C

– Gain drift: 1 ppm/°C

– INL: 2 ppm

Programmable attenuation and gain of 0.125 to 128

(corresponding to an equivalent input range from

±20 V to ±20 mV) eliminates the need for an external

attenuator or external gain stages. A 1-GΩ minimum

input impedance reduces error resulting from sensor

loading. Additionally, the low-noise and low-drift

performance allow direct connections to strain-gauge

bridge and thermocouple sensors that are affected by

high common-mode voltage.

•

Integrated features and diagnostics:

– Internal oscillator

– Signal and reference voltage monitors

– Cyclic redundancy check (CRC)

Power supplies:

– AVDD: 4.75 V to 5.25 V

– DVDD: 2.7 V to 5.25 V

– HVDD: ±5 V to ±18 V

The digital filter is programmable over a wide range

from 2.5 SPS to 40 kSPS. Attenuation of 50-Hz and

60-Hz line cycle noise for data rates ≤ 50 SPS or

60 SPS reduces measurement error. In most data

rates, the filter provides no-latency conversion data

for high data throughput during external channel

sequencing.

•

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

5-mm × 5-mm VQFN package

The ADS125H01 is housed in a 5-mm × 5-mm VQFN

package and is fully specified over the –40°C to

+125°C temperature range.

2 Applications

•

PLC analog input modules:

– Voltage (±10 V or 0 V to 5 V)

– Current (4 mA to 20 mA with shunt)

Data acquisition (DAQ):

– High common-mode voltage inputs

– High-side current measurement

Battery tests

Device Information ⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

ADS125H01

VQFN (32)

5.00 mm × 5.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

5 V (D)

5 V (A)

15 V

START

RESET

DRDY

ADS125H01

Control

REFP

REFN

CS1

Buf

Monitor

CS2

Serial

Interface

(CRC)

DIN

AINP

AINN

24-Bit

ûꢀ ADC

Digital

Filter

DOUT/DRDY

SCLK

PGA

Monitor

-15 V

Clock

Mux

Oscillator

CLKIN

(D)

(A)

Functional Block Diagram

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Product Folder Links: ADS125H01

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与ADS125H01_V01相关器件

型号	品牌	获取价格	描述	数据表
ADS125H01IRHBR	TI	获取价格	具有低噪声 PGA 和 ±20V 输入的 24 位 40kSPS 单通道 Δ-Σ ADC
ADS125H01IRHBT	TI	获取价格	具有低噪声 PGA 和 ±20V 输入的 24 位 40kSPS 单通道 Δ-Σ ADC
ADS125H02	TI	获取价格	具有 ±20V 输入、PGA、IDAC、GPIO 和基准电压的 24 位、40kSPS、2
ADS125H02IRHBR	TI	获取价格	具有 ±20V 输入、PGA、IDAC、GPIO 和基准电压的 24 位、40kSPS、2
ADS125H02IRHBT	TI	获取价格	具有 ±20V 输入、PGA、IDAC、GPIO 和基准电压的 24 位、40kSPS、2
ADS-125MC	ETC	获取价格	Analog-to-Digital Converter， 12-Bit
ADS-126	ETC	获取价格
ADS1260	TI	获取价格	适用于工厂自动化且具有 PGA、基准电压和 IDAC 的 24 位 40kSPS 5 通道
ADS1260BIRHBR	TI	获取价格	适用于工厂自动化且具有 PGA、基准电压和 IDAC 的 24 位 40kSPS 5 通道
ADS1260BIRHBT	TI	获取价格	适用于工厂自动化且具有 PGA、基准电压和 IDAC 的 24 位 40kSPS 5 通道

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