1 Features

• 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

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)

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

• Microsize package: SOT23-5

• 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

2 Applications

• Telematics control

• Battery management systems

• Inverter and motor control

• Automotive gateway

• Power distribution box

• Power steering

• On board chargers

3 Description

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

bias the input bipolar signals.

The REF20xx-Q1 offers excellent temperature drift

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

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

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.

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.

Device Information

PART NAME

PACKAGE (1)

BODY SIZE (NOM)

REF20xx-Q1

SOT-23 (5)

2.90 mm × 1.60 mm

(1)

For all available packages, see the orderable addendum at

the end of the datasheet.

INA240-Q1

REF20-Q1

EN

ADC

GND

REF1

Power

Supply

REF2

Application Example

-0.05

-0.04

-0.03

-0.02

-0.01

0

0.01

0.02

0.03

0.04

0.05

±75

±50

±25

0

25

50

75

100

125

150

Temperature (ƒC)

C001

V

BIAS

REF20-Q1

SBOSA80 – DECEMBER 2021

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.