Features and Benefits
- Very Low Noise: 0.75µVP-P Typ, 0.1Hz to 10Hz
- DC to 1Hz Noise Lower Than OP-07
- Full Output Swing into 1k Load
- Offset Voltage: 10µV Max
- Offset Voltage Drift: 50nV/°C Max
- Common Mode Rejection Ratio: 110dB Min
- Power Supply Rejection Ratio: 115dB Min
- No External Components Required
- Pin Compatible with Standard 8-Pin Op Amps
- Available in Standard 8-Pin Plastic DIP and 8-Pin SO Packages
The LTC1250 is a high performance, very low noise zero-drift operational amplifier. The LTC1250's combination of low front-end noise and DC precision makes it ideal for use with low impedance bridge transducers. The LTC1250 features typical input noise of 0.75µVP-P from 0.1Hz to 10Hz, and 0.2µVP-P from 0.1Hz to 1Hz. The LTC1250 has DC to 1Hz noise of 0.35µVP-P, surpassing that of low noise bipolar parts including the OP-07, OP-77, and LT1012. The LTC1250 uses the industry-standard single op amp pinout, and requires no external components or nulling signals, allowing it to be a plug-in replacement for bipolar op amps.
The LTC1250 incorporates an improved output stage capable of driving 4.3V into a 1k load with a single 5V supply; it will swing ±4.9V into 5k with ±5V supplies. The input common mode range includes ground with single power supply voltages above 12V. Supply current is 3mA with a ±5V supply, and overload recovery times from positive and negative saturation are 0.5ms and 1.5ms, respectively. The internal nulling clock is set at 5kHz for optimum low frequency noise and offset drift; no external connections are necessary.
The LTC1250 is available in a standard 8-pin plastic DIP and 8-pin SO packages.
Protected by U.S. Patents including 4933642.
- Electronic Scales
- Strain Gauge Amplifiers
- Thermocouple Amplifiers
- High Resolution Data Acquisition
- Low Noise Transducers
- Instrumentation Amplifiers
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.
Tools & Simulations
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:
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.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.