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REF3312_17 Datasheet, PDF (1/37 Pages) Texas Instruments – 3.9-μA, SC70-3, SOT-23-3, and UQFN-8, 30-ppm/C Drift Voltage Reference
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REF3312, REF3318, REF3320, REF3325, REF3330, REF3333
SBOS392G – AUGUST 2007 – REVISED DECEMBER 2016
REF33xx 3.9-μA, SC70-3, SOT-23-3, and UQFN-8, 30-ppm/°C Drift Voltage Reference
1 Features
•1 Microsize Packages: SC70-3, SOT-23-3, UQFN-8
• Low Supply Current: 3.9 μA (typ)
• Extremely Low Dropout Voltage: 110 mV (typ)
• High Output Current: ±5 mA
• Low Temperature Drift: 30 ppm/°C (max)
• High Initial Accuracy: ±0.15% (max)
• 0.1-Hz to 10-Hz Noise: 35 μVPP (REF3312)
• Voltage Options: 1.2 V, 1.8 V, 2.5 V, 3 V, 3.3 V
2 Applications
• Portable Equipment
• Tablets and Smartphones
• Hard Disk Drives
• Sensor Modules
• Data Acquisition Systems
• Medical Equipment
• Test Equipment
3 Description
The REF33xx is a low-power, precision, low-dropout
voltage reference family available in tiny SC70-3 and
SOT-23-3 packages, and in a 1.5-mm × 1.5-mm
UQFN-8 package. Small size and low power
consumption (5-μA max) make the REF33xx ideal for
a wide variety of portable and battery-powered
applications.
The REF33xx can be operated at a supply voltage
180 mV above the specified output voltage under
normal load conditions, with the exception of the
REF3312, which has a minimum supply voltage of
1.7 V. All models are specified for the wide
temperature range of –40°C to +125°C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOT-23 (3)
2.92 mm × 1.30 mm
REF33xx
SC70 (3)
2.00 mm × 1.25 mm
UQFN (8)
1.50 mm × 1.50 mm
(1) For all available packages, see the package option addendum
at the end of the datasheet.
REF3312 in a Single-Supply Signal Chain
R3
VIN
R2
+2.7V
Enable(1)
R1
66.5W
C1
1.5nF
+2.7V
VCC
MSP430x20x3PW
P1.2
A0+
16-Bit
ADC
OPA333,
OPA363,
or
OPA369
REF3312
C2
1mF
VREF
VSS
Dropout Voltage vs Load Current
200
180
160
+125°C
140
120
100
80
60
+25°C
40
-40°C
20
0
-5 -4 -3 -2 -1 0 1 2 3 4 5
Load Current (mA)
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.