REF34-Q1 Low-Drift, Low-Power, Small-Footprint Series

Voltage References

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 C6

• Initial accuracy: ±0.05% (maximum)

• Temperature coefficient : 6 ppm/°C (maximum)

• Operating temperature range: −40°C to +125°C

• Output voltage options: 2.5V, 3.0V, 3.3V, 4.096V,

5.0V

• Output current: ±10 mA

• Low quiescent current: 95 μA (maximum)

• Low shutdown mode current: 3 μA (maximum)

• Wide input voltage: 12 V

• Excellent long-term stability 25 ppm/1000 hrs

• Available in 6-pin and 5-Pin SOT-23 package and

8-pin MSOP package

2 Applications

• Body control modules

• On board chargers

• Traction inverters

• Battery management systems

• Advanced driver assistance systems

3 Description

The REF34-Q1 devices are low-temperature-drift

(6 ppm/°C), low-power, high-precision CMOS voltage

references. The devices have ±0.05% initial accuracy

and low operating current with power consumption

less than 95 μA. These devices also offer very low

to maintain high signal integrity with high-resolution

data converters and noise critical systems.

Stability and system reliability are further improved by

the low output-voltage hysteresis of these devices and

low long-term output voltage drift. Furthermore, the

small size and low operating current of the devices

(95 μA) make them an excellent choise for battery-

powered applications. The REF34-Q1 features an

enable pin that can set the device into shutdown

where it consumes a low stand by current (3 μA) to

help with overall system power during standby.

The REF34-Q1 family is specified for the wide

temperature range of −40°C to +125°C. Contact the

TI sales representative for additional voltage options.

Device Information (1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

REF34xx-Q1

SOT-23 (6)

2.90 mm × 1.60 mm

REF34xxS-Q1

SOT-23 (5)

2.90 mm × 1.60 mm

REF34xx-Q1

VSSOP (8)

4.00 mm × 4.00 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

REF3425-Q1

OUT

2.5V VREF

IN

GND

ADS7828-Q1

AIN0

AIN1

VREF+

VREF-

VDD

3V VDD

AIN2

AIN3

TDA2 (MCU)

I2C

3.3V VDD

I2C

GPIOx

VDD

Copyright © 2017, Texas Instruments Incorporated

EN

GPIO0

Simplified Schematic

Load Current (mA)

0

0.04

0.08

0.12

0.16

0.2

0.24

0.28

0.32

0.36

0.4

-10

-5

5

10

0

+25°C

-40°C

+125°C

drop

Dropout vs Current Load Over Temperature

www.ti.com

REF34-Q1

SBAS901C – JULY 2018 – REVISED OCTOBER 2020

Copyright © 2020 Texas Instruments Incorporated

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Product Folder Links: REF34-Q1

REF34-Q1

SBAS901C – JULY 2018 – REVISED OCTOBER 2020

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.