Datasheet LT6650 (Analog Devices)

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