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Electrical Characteristics
4 ppm/
°C, 100 A SOT23-6 SERIES VOLTAGE REFERENCES
SBVS078A – OCTOBER 2006 – REVISED APRIL 2007
Boldface limits apply over the listed temperature range.
TA = 25°C, ILOAD = 0 mA, and VIN = 5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REF3212 (1.25 V)
Output voltage
1.2475
1.25
1.2525
V
VOUT
Initial accuracy
–0.2
0.01
0.2
%
Output voltage noise
f = 0.1 Hz to 10 Hz
17
V
PP
Noise
Voltage noise
f = 10 Hz to 10 kHz
24
V
RMS
REF3220 (2.048 V)
Output
2.044
2.048
2.052
V
voltage
VOUT
Initial
–0.2
0.01
0.2
%
accuracy
Output
f = 0.1 Hz to 10 Hz
27
V
PP
voltage noise
Noise
Voltage noise f = 10 Hz to 10 kHz
39
V
RMS
REF3225 (2.5 V)
Output voltage
2.495
2.5
2.505
V
VOUT
Initial accuracy
–0.2
0.01
0.2
%
Output voltage noise
f = 0.1 Hz to 10 Hz
33
V
PP
Noise
Voltage noise
f = 10 Hz to 10 kHz
48
V
RMS
REF3230 (3 V)
Output voltage
2.994
3
3.006
V
VOUT
Initial accuracy
–0.2
0.01
0.2
%
Output voltage noise
f = 0.1 Hz to 10 Hz
39
V
PP
Noise
Voltage noise
f = 10 Hz to 10 kHz
57
V
RMS
REF3233 (3.3 V)
Output voltage
3.293
3.3
3.307
V
VOUT
Initial accuracy
–0.2
0.01
0.2
%
Output voltage noise
f = 0.1 Hz to 10 Hz
43
V
PP
Noise
Voltage noise
f = 10 Hz to 10 kHz
63
V
RMS
REF3240 (4.096 V)
Output voltage
4.088
4.096
4.104
V
VOUT
Initial accuracy
–0.2
0.01
0.2
%
Output voltage noise
f = 0.1 Hz to 10 Hz
53
V
PP
Noise
Voltage noise
f = 10 Hz to 10 kHz
78
V
RMS
REF3212/REF3220/REF3225/REF3230/REF3233/REF3240
TA = 25°C
4
7
dVOUT/dT Output voltage temperature drift
ppm/
°C
–55
°C ≤ T
A ≤ 125°C
10.5
40
Long-term stability
0 tp 1000 h
55
ppm
Line regulation
VOUT + 0.05
(1) ≤ V
IN ≤ 5.5 V
–65
15
65
ppm/V
Sourcing
0 mA < ILOAD < 10 mA, VIN = VOUT + 250 mV
(1)
–40
3
40
dVOUT/
Load
V/mA
dILOAD
regulation(2)
Sinking
–10 mA < ILOAD < 0 mA, VIN = VOUT + 100 mV
(1)
–60
20
60
First cycle
100
Thermal
dT
ppm
Additional
hysteresis(3)
25
cycles
(1)
The minimum supply voltage for the REF3212 is 1.8 V.
(2)
Load regulation is using force and sense lines; see the Load Regulation section for more information
(3)
Thermal hysteresis procedure is explained in more detail in the Applications Information section.
Copyright 2006–2007, Texas Instruments Incorporated
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