Datasheet > REF2041-Q1

REF2041-Q1

更新时间： 2024-11-13 02:49:31

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
34页	3710K
描述
REF20xx-Q1 Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References

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REF2041-Q1 数据手册

REF20-Q1

SBOSA80 – DECEMBER 2021

REF20xx-Q1 Low-Drift, Low-Power, Dual-Output, V_REFand V_REF/ 2 Voltage References

1 Features

3 Description

•

AEC-Q100 qualified with the following results:

– Device temperature grade 1: –40°C to +125°C

ambient operating temperature

– Device HBM ESD classification level 2

– Device CDM ESD classification level C7B

Functional Safety-Capable

– Documentation available to aid functional safety

system design

Two Outputs, V_REFand V_REF/ 2, for convenient

use in single-supply systems

Excellent temperature drift performance:

– 8 ppm/°C (maximum) from –40°C to 125°C

High initial accuracy: ±0.05% (maximum)

V_REFand V_BIAStracking overtemperature:

– 7 ppm/°C (maximum) from –40°C to 125°C

Microsize package: SOT23-5

Applications with only a positive supply voltage often

require additional stable voltage in the middle of the

analog-to-digital converter (ADC) input range to bias

input bipolar signals. The REF20xx-Q1 provides a

reference voltage (V_REF) for the ADC and a second

highly-accurate voltage (V_BIAS) that can be used to

bias the input bipolar signals.

•

The REF20xx-Q1 offers excellent temperature drift

(8 ppm/°C, maximum) and initial accuracy (0.05%)

on both the V_REFand V_BIASoutputs while operating

at a quiescent current less than 430 µA. In addition,

the V_REFand V_BIASoutputs track each other with

a precision of 7 ppm/°C (maximum) across the

temperature range of –40°C to 125°C. All these

features increase the precision of the signal chain and

decrease board space, while reducing the cost of the

system as compared to a discrete solution. Extremely

low dropout voltage of only 10 mV allows operation

from very low input voltages, which can be very useful

in battery-operated systems.

•

Low dropout voltage: 10 mV

High output current: ±20 mA

Low quiescent current: 360 μA

Line regulation: 3 ppm/V

Load regulation: 8 ppm/mA

Both the V_REFand V_BIASvoltages have the same

excellent specifications and can sink and source

current equally well. Very good long-term stability and

low noise levels make these devices ideally-suited for

high-precision applications.

2 Applications

•

Telematics control

Battery management systems

Inverter and motor control

Automotive gateway

Power distribution box

Power steering

Device Information

PART NAME

PACKAGE ⁽¹⁾

BODY SIZE (NOM)

REF20xx-Q1

SOT-23 (5)

2.90 mm × 1.60 mm

On board chargers

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

the end of the datasheet.

Power

Supply

0.05

0.04

0.03

V_BIAS

0.02

0.01

V_IN+

V_OUT

ADC

INA240-Q1

R_SHUNT

I_SENSE

-0.01

V_IN-

REF1

-0.02

V_REF

-0.03

REF2

-0.04

-0.05

V_BIAS= 1.5 V

V_REF= 3.0 V

REF20-Q1

œ75 œ50 œ25

100 125 150

V_IN

GND

Temperature (°C)

C001

Application Example

V_REFand V_BIASvs Temperature

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...34

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