LT1783
1.25MHz, Over-The-Top Micropower, Rail-to-Rail Input and Output Op Amp in SOT-23
Top
Overview
Features and Benefits
- Operates with Inputs Above V+
- Rail-to-Rail Input and Output
- Micropower: 300µA Supply Current Max
- Operating Temperature Range: –40°C to 125°C
- Gain Bandwidth product: 1.25MHz
- Slew Rate: 0.42V/µs
- Low Input Offset Voltage: 800µV Max
- Single Supply Input Range: 0V to 18V
- High Output Current: 18mA Min
- Specified on 3V, 5V and ±5V Supplies
- Output Shutdown on 6-Lead Version
- Reverse-Battery Protection to 18V
- High Voltage Gain: 1500V/mV
- Low Profile (1mm) ThinSOT™ Package
Product Details
The LT1783 is a 1.25MHz op amp available in the small SOT-23 package that operates on all single and split supplies with a total voltage of 2.5V to 18V. The amplifier draws less than 300µA of quiescent current and has reverse-battery protection, drawing negligible current for reverse supply voltages up to 18V.
The input range of the LT1783 includes ground, and a unique feature of this device is its Over-The-Top® operation capabilitity with either or both of its inputs above the positive rail. The inputs handle 18V both differential and common mode, independent of supply voltage. The input stage incorporates phase reversal protection to prevent false outputs from occurring even when the inputs are 9V below the negative supply.
The LT1783 can drive loads up to 18mA and still maintain rail-to-rail capability. A shutdown feature on the 6-lead version can disable the part, making the output high impedance and reducing quiescent current to 5µA. The LT1783 op amp is available in the 5- and 6-lead SOT-23 packages. For applications requiring lower power, refer to the LT1782.
Applications
- Portable Instrumentation
- Battery- or Solar-Powered Systems
- Sensor Conditioning
- Supply Current Sensing
- Battery Monitoring
- MUX Amplifiers
- 4mA to 20mA Transmitters
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (3)
Documentation & Resources
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R417 Reliability Data3/26/2018
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DC417B - Demo Manual2/1/2012
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DC617A - Demo Manual9/24/2009
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DC479A - Demo Manual9/24/2009
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Boost Converter Drives 1A White LEDs5/1/2004 LT Journal
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The LTC1871 Achieves the Industry’s Highest Efficiency for Single-Ended Boost, Flyback and SEPIC Topologies9/1/2001 LT Journal
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SOT-23 Micropower, Rail-to-Rail Op Amps Operate with Inputs above the Positive Supply11/1/1999 LT Journal
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LT1783
Design Tools
Analog Filter Wizard
Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.
Analog Photodiode Wizard
Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LT1783CS5#TRMPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LT1783CS5#TRPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LT1783CS6#TRMPBF | Material Declaration | Reliability Data | 6-Lead TSOT-23 | |
| LT1783CS6#TRPBF | Material Declaration | Reliability Data | 6-Lead TSOT-23 | |
| LT1783HS5#TRMPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LT1783HS5#TRPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LT1783HS6#TRMPBF | Material Declaration | Reliability Data | 6-Lead TSOT-23 | |
| LT1783HS6#TRPBF | Material Declaration | Reliability Data | 6-Lead TSOT-23 | |
| LT1783IS5#TRMPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LT1783IS5#TRPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LT1783IS6#TRMPBF | Material Declaration | Reliability Data | 6-Lead TSOT-23 | |
| LT1783IS6#TRPBF | Material Declaration | Reliability Data | 6-Lead TSOT-23 | |
| Wafer Fabrication Data | R417 Reliability Data |
Sample & Buy
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Lead Times
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.