LT1167
Single Resistor Gain Programmable, Precision Instrumentation Amplifier
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Overview
Features and Benefits
- Single Gain Set Resistor: G = 1 to 10,000
- Gain Error: G = 10, 0.08% Max
- Input Offset Voltage Drift: 0.3µV/°C Max
- Meets IEC 1000-4-2 Level 4 ESD Tests with Two External 5k Resistors
- Gain Nonlinearity: G = 10, 10ppm Max
- Input Offset Voltage: G = 10, 60µV Max
- Input Bias Current: 350pA Max
- PSRR at G = 1: 105dB Min
- CMRR at G = 1: 90dB Min
- Supply Current: 1.3mA Max
- Wide Supply Range: ±2.3V to ±18V
- 1kHz Voltage Noise: 7.5nV/√Hz
- 0.1Hz to 10Hz Noise: 0.28µVP-P
- Available in 8-Pin PDIP and SO Packages
Product Details
The LT1167 is a low power, precision instrumentation amplifier that requires only one external resistor to set gains of 1 to 10,000. The low voltage noise of 7.5nV/√Hz (at 1kHz) is not compromised by low power dissipation (0.9mA typical for ± 2.3V to ±15V supplies).
The part’s high accuracy (10ppm maximum nonlinearity, 0.08% max gain error (G = 10)) is not degraded even for load resistors as low as 2k. The LT1167 is laser trimmed for very low input offset voltage (40μV max), drift (0.3μV/°C), high CMRR (90dB, G = 1) and PSRR (105dB, G = 1). Low input bias currents of 350pA max are achieved with the use of superbeta processing. The output can handle capacitive loads up to 1000pF in any gain configuration while the inputs are ESD protected up to 13kV (human body). The LT1167 with two external 5k resistors passes the IEC 1000-4-2 level 4 specification.
The LT1167, offered in 8-pin PDIP and SO packages, requires significantly less PC board area than discrete multi op amp and resistor designs.
The LT1167-1 offers the same performance as the LT1167, but its input current characteristic at high common mode voltage better supports applications with high input impedance (see the Applications Information section).
Applications
- Bridge Amplifiers
- Strain Gauge Amplifiers
- Thermocouple Amplifiers
- Differential to Single-Ended Converters
- Medical Instrumentation
Product Categories
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 (1)
Documentation & Resources
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R376 Reliability Data3/22/2018PDF20K
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Small, Portable Altimeter Operates from a Single Cell5/1/2002 LT Journal
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May 2000 New Instrumentation Amplifier: Single-Resistor Gain Set and Precision Front End Make Accuracy Easy5/1/2000 LT Journal
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New Instrumentation Amplifier: Single-Resistor Gain Set and Precision Front End Make Accuracy Easy5/1/2000 LT Journal
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Designing the LT1167 Instrumentation Amplifier into a Single 5V Supply Application6/1/1999 LT Journal
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The LT1167: Precision, Low Cost, Low Power Instrumentation Amplifier Requires a Single Gain-Set Resistor5/1/1998 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:
LT1167
In-Amp Diamond Plot Tool
The Diamond Plot Tool is a web application that generates a configuration-specific Output Voltage Range vs. Input Common-Mode Voltage graph, also known as the Diamond Plot, for Analog Devices Instrumentation Amplifiers. Based on user inputs such as supply voltage, gain, and input signal range, the tool detects saturation and recommends in-amps for which the input signal is in-range and the configuration is valid. Avoid saturation, find the best in-amp for your design, and save time.
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.
PCN-PDN Information
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Sample & Buy
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List Pricing
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Lead Times
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Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
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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.