200

180

160

140

120

100

80

60

40

20

0

-5

-4

-3

-2

-1

0

1

2

3

4

5

LoadCurrent(mA)

+125 C

°

+25 C

°

-

°

40 C

R

3

R

2

V

IN

+2.7V

Enable

(1)

OPA333,

OPA363,

OPA369

or

R

66.5

1

W

C

1.5nF

1

C

1 F

2

m

P1.2

VREF

A0+

REF3312

+2.7V

V

CC

V

SS

16-Bit

ADC

MSP430x20x3PW

Product

Folder

Sample &

Buy

Technical

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REF3312, REF3318, REF3320, REF3325, REF3330, REF3333

SBOS392E – AUGUST 2007 – REVISED OCTOBER 2014

REF33xx 3.9-

μA, SC70-3, SOT-23-3, and UQFN-8, 30-ppm/°C Drift Voltage Reference

1 Features

3 Description

The REF33xx is a low-power, precision, low-dropout

1

•

Microsize Packages: SC70-3, SOT-23-3, UQFN-8

voltage reference family available in tiny SC70-3 and

•

Low Supply Current: 3.9

μA (typ)

SOT-23-3 packages, and in a 1.5-mm × 1.5-mm

•

Extremely Low Dropout Voltage: 110 mV (typ)

UQFN-8

package.

Small

size

and

low

power

consumption (5-

μA max) make the REF33xx ideal for

•

High Output Current: ±5 mA

a wide variety of portable and battery-powered

•

Low Temperature Drift: 30 ppm/°C (max)

applications.

•

High Initial Accuracy: ±0.15% (max)

The REF33xx can be operated at a supply voltage

•

0.1-Hz to 10-Hz Noise: 35

180 mV above the specified output voltage under

•

Voltage Options: 1.2 V, 1.8 V, 2.5 V, 3 V, 3.3 V

normal load conditions, with the exception of the

REF3312, which has a minimum supply voltage of

2 Applications

1.8 V. All models are specified for the wide

temperature range of –40°C to +125°C.

•

Portable Equipment

•

Tablets and Smartphones

Device Information(1)

•

Hard Disk Drives

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Sensor Modules

SOT-23 (3)

2.92 mm × 1.30 mm

REF33xx

•

Data Acquisition Systems

SC70 (3)

2.00 mm × 1.25 mm

REF3325

UQFN (8)

1.50 mm × 1.50 mm

•

Medical Equipment

REF3330

UQFN (8)

1.50 mm × 1.50 mm

•

Test Equipment

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

at the end of the datasheet.

REF3312 in a Single-Supply Signal Chain

Dropout Voltage vs Load Current

1

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.