DocumentationDatasheet
Design Note
Reliability Data
LT Journal
cad_symbol
Features
- Low Quiescent Current 5.6µA (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
Typical Application
Description
The LT6650 is a micropower, low voltage 400mV reference. 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 post package-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.
SOT-23
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LT6650CS5#PBF | SOT | 5 | C | $1.88 | |
| LT6650CS5#TRMPBF | SOT | 5 | C | $1.88 | $1.27 |
| LT6650CS5#TRPBF | SOT | 5 | C | $1.88 | $1.25 |
| LT6650HS5#PBF | SOT | 5 | H | $2.41 | |
| LT6650HS5#TRMPBF | SOT | 5 | H | $2.41 | $1.71 |
| LT6650HS5#TRPBF | SOT | 5 | H | $2.41 | $1.69 |
| LT6650IS5#PBF | SOT | 5 | I | $2.41 | |
| LT6650IS5#TRMPBF | SOT | 5 | I | $2.41 | $1.71 |
| LT6650IS5#TRPBF | SOT | 5 | I | $2.41 | $1.69 |
| LT6650CS5 | SOT | 5 | C | $3.76 | |
| LT6650CS5#TR | SOT | 5 | C | $3.76 | $2.50 |
| LT6650IS5 | SOT | 5 | I | $4.82 | |
| LT6650IS5#TR | SOT | 5 | I | $4.82 | $3.38 |
| LT6650HS5 | SOT | 5 | H | $4.82 | |
| LT6650HS5#TR | SOT | 5 | H | $4.82 | $3.38 |
| LT6650CS5#TRM | SOT | 5 | C | $3.76 | $2.54 |
| LT6650HS5#TRM | SOT | 5 | H | $4.82 | $3.42 |
| LT6650IS5#TRM | SOT | 5 | I | $4.82 | $3.42 |
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.