Datasheet > INA239AIDGST

INA239AIDGST

更新时间： 2024-11-14 02:58:35

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
47页	2759K
描述
INA239 85-V, 16-Bit, High-Precision Power Monitor With SPI Interface

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INA239AIDGST 数据手册

INA239-Q1

SLYS028A – MAY 2020 – REVISED JUNE 2021

INA239-Q1 AEC-Q100, 85-V, 16-Bit, High-Precision Power Monitor With SPI Interface

1 Features

3 Description

•

AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, T_A

Functional Safety-Capable

– Documentation available to aid functional safety

system design

The INA239-Q1 is an ultra-precise digital power

monitor with a 16-bit delta-sigma ADC specifically

designed for current-sensing applications. The device

can measure a full-scale differential input of ±163.84

mV or ±40.96 mV across a resistive shunt sense

element with common-mode voltage support from –

0.3 V to +85 V.

•

High-resolution, 16-bit delta-sigma ADC

Current monitoring accuracy:

– Offset voltage: ±5 µV (maximum)

– Offset drift: ±0.02 µV/°C (maximum)

– Gain error: ±0.1% (maximum)

– Gain error drift: ±25 ppm/°C (maximum)

– Common mode rejection: 140 dB (minimum)

Power monitoring accuracy:

The INA239-Q1 reports current, bus voltage,

temperature, and power, all while performing

the needed calculations in the background. The

integrated temperature sensor is ±1°C accurate

for die temperature measurement and is useful in

monitoring the system ambient temperature.

•

– 0.7% full scale, –40°C to +125°C (maximum)

Fast alert response: 75 μs

Wide common-mode range: –0.3 V to +85 V

Bus voltage sense input: 0 V to 85 V

Shunt full-scale differential range:

The low offset and gain drift design of the INA239-

Q1 allows the device to be used in precise systems

that do not undergo multi-temperature calibration

during manufacturing. Further, the very low offset

voltage and noise allow for use in A to kA sensing

applications and provide a wide dynamic range

without significant power dissipation losses on the

sensing shunt element. The low input bias current

of the device permits the use of larger current-

sense resistors, thus providing accurate current

measurements in the micro-amp range.

•

±163.84 mV / ±40.96 mV

•

Input bias current: 2.5 nA (maximum)

Temperature sensor: ±1°C (maximum at 25°C)

Programmable conversion time and averaging

10-MHz SPI communication interface

Operates from a 2.7-V to 5.5-V supply:

– Operational current: 640 µA (typical)

– Shutdown current: 5 µA (maximum)

The device allows for selectable ADC conversion

times from 50 µs to 4.12 ms as well as sample

averaging from 1x to 1024x, which further helps

reduce the noise of the measured data.

2 Applications

•

Automotive battery management systems

EV / HEV A - KA sense applications

DC/DC converters and power inverters

ADAS domain controllers

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

INA239-Q1

VSSOP (10)

3.00 mm × 3.00 mm

(1) For all available packages, see the package option

addendum at the end of the data sheet.

Power

Reference

IN+

IN-

SCLK

Voltage Current

Power

Temp

MOSI

MISO

16 Bit

ADC

MUX

SPI

VBUS

Oscillator

Out-of-range

Threshold

ALERT

GND

Simplified 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.

12 3 4 5 6 7...47

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与INA239AIDGST相关器件

型号	品牌	获取价格	描述	数据表
INA239AQDGSRQ1	TI	获取价格	INA239-Q1 AEC-Q100, 85-V, 16-Bit, High-Precision Power Monitor With SPI Interface
INA239-Q1	TI	获取价格	INA239-Q1 AEC-Q100, 85-V, 16-Bit, High-Precision Power Monitor With SPI Interface
INA239-Q1_V01	TI	获取价格	INA239-Q1 AEC-Q100, 85-V, 16-Bit, High-Precision Power Monitor With SPI Interface
INA240	TI	获取价格	具有增强的 PWM 抑制能力的 -4V 至 80V、双向、超精密电流感应放大器
INA240A1D	TI	获取价格	具有增强的 PWM 抑制能力的 -4V 至 80V、双向、超精密电流感应放大器 \| D \|
INA240A1DR	TI	获取价格	具有增强的 PWM 抑制能力的 -4V 至 80V、双向、超精密电流感应放大器 \| D \|
INA240A1EDRQ1	TI	获取价格	具有增强的 PWM 抑制能力的 AEC-Q100、-4V 至 80V、双向、超精密电流感应
INA240A1PW	TI	获取价格	具有增强的 PWM 抑制能力的 -4V 至 80V、双向、超精密电流感应放大器 \| PW
INA240A1PWR	TI	获取价格	具有增强的 PWM 抑制能力的 -4V 至 80V、双向、超精密电流感应放大器 \| PW
INA240A1QDRQ1	TI	获取价格	具有增强的 PWM 抑制能力的 AEC-Q100、-4V 至 80V、双向、超精密电流感应

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