Datasheet > REF34

REF34

更新时间： 2024-01-09 05:09:27

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
31页	2420K
描述
REF34xx Low-Drift, Low-Power, Small-Footprint Series Voltage Reference

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REF34 数据手册

REF3425, REF3430, REF3433, REF3440, REF3450

SBAS804F – SEPTEMBER 2017 – REVISED JUNE 2021

REF34xx Low-Drift, Low-Power, Small-Footprint Series Voltage Reference

1 Features

3 Description

•

Initial accuracy: ±0.05% (maximum)

Temperature coefficient : 6 ppm/°C (maximum)

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

Output current: ±10 mA

Low quiescent current: 95 μA (maximum)

Ultra-low zero load dropout voltage: 100 mV

(maximum)

The REF34xx device is a low temperature drift

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

reference, featuring ±0.05% initial accuracy, low

operating current with power consumption less than

95 μA. This device also offers very low output noise of

3.8 μV_p-p/V, which enables its ability to maintain high

signal integrity with high-resolution data converters in

noise critical systems. With a small SOT-23 package,

REF34xx offers enhanced specifications and pin-to-

pin replacement for MAX607x, ADR34xx and LT1790

(REF34xxT, no EN pin). The REF34xx family is

compatible to most of the ADC and DAC such as

ADS1287, DAC8802 and ADS1112.

•

Wide input voltage: 12 V

Output 1/f noise (0.1 Hz to 10 Hz): 3.8 µV_p-p/V

Excellent long-term stability 25 ppm/1000 hrs

Multiple small footprint 6 pin SOT-23 package

pinouts: REF34xx and REF34xxT

2 Applications

Stability and system reliability are further improved

by the low output-voltage hysteresis of the device

and low long-term output voltage drift. Furthermore,

the small size and low operating current of the

devices (95 μA) benefit portable and battery-powered

applications.

•

Data acquisition systems

Analog I/O modules

Field transmitters

Lab & field instrumentation

Servo drive control modules

DC power supply, AC source, electronic load

REF34xx is specified for the wide temperature range

of −40°C to +125°C.

Voltage Reference Recommendation for Data

Converters

Device Information

ADC

DAC RESOLUTION

PART NAME

PACKAGE ⁽¹⁾

BODY SIZE (NOM)

VOLTAGE REFERENCE RESOLUTION

(1)

REF34xx

REF34xxT

SOT-23 (6)

2.90 mm × 1.60 mm

TL431LI, TLV431

LM4040, LM4050, REF30

REF31, REF33, REF4132

REF34, REF50

10-b

12-b

8-b

10-b

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

the end of the data sheet

14-b to 16-b

16-b to 18-b

18-b+

12-b

14-b to 16-b

16-b+

REF70

(1) For specific ADC/DAC recommendations, see SNAA320

10 ꢀ

0.4

25°C

125°C

-40°C

0.36

124 ꢀ

0.32

ADS1287

REF

Input Signal

1 nF

0.28

0.24

0.2

VIN

REF34xx

CIN

1µF

COUT

10 µF

0.16

0.12

0.08

0.04

Simplified Schematic

Load Current (mA)

Dropout vs. Current Load Over 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...31

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REF3425_V02	TI	获取价格	REF34xx Low-Drift, Low-Power, Small-Footprint Series Voltage Reference
REF3425_V03	TI	获取价格	REF34xx Low-Drift, Low-Power, Small-Footprint Series Voltage Reference
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REF3425QDGKRQ1	TI	获取价格	REF34-Q1 Low-Drift, Low-Power, Small-Footprint Series Voltage References
REF3425S-Q1	TI	获取价格	REF34-Q1 Low-Drift, Low-Power, Small-Footprint Series Voltage References

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