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LT6650
1
6650fa
APPLICATIO S
U
FEATURES
TYPICAL APPLICATIO
U
DESCRIPTIO
U
The LT
®
6650 is a micropower, low voltage 400mV refer-
ence. Operating with supplies from 1.4V up to 18V, the
device draws only 5.6µA typical, making it ideal for low
voltage systems as well as handheld instruments and
industrial control systems. With only two resistors the
internal buffer amplifier can scale the 400mV reference to
any desired value up to the supply voltage.
The reference is postpackage-trimmed to increase the
output accuracy. The output can sink and source 200µA
over temperature. Quiescent power dissipation is 28µW.
Stability is ensured with any output capacitor of 1µF or
higher.
The LT6650 is the lowest voltage series reference available
in the 5-lead SOT-23 package.
■
Battery-Operated Systems
■
Handheld Instruments
■
Industrial Control Systems
■
Data Acquisition Systems
■
Negative Voltage References
■
Low Quiescent Current 5.6
µ
A (typical)
■
Wide Supply Range: 1.4V to 18V
■
400mV Reference
±
1% Maximum Accuracy Over
Temperature at 5V
■
Rail-to-Rail Buffer Amplifier
■
0.5% 400mV Maximum Initial Accuracy at 5V
■
Shunt Configurable
■
Sinks and Sources Current
■
Wide Operational Range –40°C to 125°C
■
Externally Adjustable Output Voltage
■
Low Profile 1mm 5-lead SOT-23
(ThinSOT™) Package
Micropower, 400mV
Reference with Rail-to-Rail
Buffer Amplifier in SOT-23
OUT
V
OUT
0.4V
V
IN
= 1.4V TO 18V
I
Q
≈ 6µA
5
1
FB
IN
4
GND
1µF
2
LT6650
–
+
1µF
V
R
= 400mV
REFERENCE
6650 TA01a
TEMPERATURE (°C)
REFERENCE VOLTAGE (mV)
402
401
400
398
399
–30 10 50 90
6650 TA01b
130–50 –10 30 70 110
TYPICAL LT6650 PART
V
IN
= 5V
SINK 200µA
SOURCE –200µA
NO LOAD
LT6650 Temperature DriftBattery-Powered 0.4V Reference
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
