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200
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DropoutVoltage(mV)
-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
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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 μV
PP
(REF3312)
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.
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