LTC6915
Zero Drift, Precision Instrumentation Amplifier with Digitally Programmable Gain
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Overview
Features and Benefits
- 14 Levels of Programmable Gain
- 125dB CMRR Independent of Gain
- Gain Accuracy 0.1% (Typ)
- Maximum Offset Voltage of 10µV
- Maximum Offset Voltage Drift: 50nV/°C
- Rail-to-Rail Input and Output
- Parallel or Serial (SPI) Interface for Gain Setting
- Supply Operation: 2.7V to ±5.5V
- Typical Noise: 2.5µVP-P (0.01Hz to 10Hz)
- 16-Lead SSOP and 12-Lead DFN Packages
Product Details
The LTC6915 is a precision programmable gain instrumentation amplifier. The gain can be programmed to 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, or 4096 through a parallel or serial interface. The CMRR is typically 125dB with a single 5V supply with any programmed gain. The offset is below 10µV with a temperature drift of less than 50nV/°C.
The LTC6915 uses charge balanced sampled data techniques to convert a differential input voltage into a single ended signal that is in turn amplified by a zero-drift operational amplifier.
The differential inputs operate from rail-to-rail and the single-ended output swings from rail-to-rail. The LTC6915 can be used in single power supply applications as low as 2.7V, or with dual ±5V supplies. The LTC6915 is available in a 16-lead SSOP package and a 12-lead DFN surface mount package.
Applications
- Thermocouple Amplifiers
- Electronic Scales
- Medical Instrumentation
- Strain Gauge Amplifier
- High Resolution Data Acquisition
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.
Documentation & Resources
Design Resources
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PCN-PDN Information
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Support & Discussions
LTC6915 Discussions
RE: LTC6915 Gain VS frequency
1 week(s) ago in Instrumentation Amplifiers
Sample & Buy
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Lead Times
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