company blog about Mingjiada Supply ADI LTC6373IDFM 36V Fully-Differential Programmable-Gain Instrumentation Amplifier With 25pA Input Bias Current

Mingjiada Supply ADI LTC6373IDFM 36V Fully-Differential Programmable-Gain Instrumentation Amplifier With 25pA Input Bias Current

In precision signal chain design, the performance of instrumentation amplifiers often determines the measurement accuracy and reliability of the entire system. Mingjiada Electronics has long supplied ADI’s LTC6373IDFM—a 36V fully differential, programmable-gain instrumentation amplifier. With an ultra-low input bias current of 25pA, a fully differential output architecture and flexible digital gain programming capabilities, it serves as an ideal front-end solution for high-performance data acquisition systems.

I. Product Overview (LTC6373IDFM)
The LTC6373IDFM is a precision instrumentation amplifier from ADI that utilises a fully differential output architecture. The device incorporates a highly matched resistive network, delivering excellent common-mode rejection ratio (CMRR), offset voltage, gain error, gain drift and gain non-linearity characteristics. Users can easily programme the gain to one of seven available settings via a 3-bit parallel interface (A2 to A0); an eighth state places the device into shutdown mode, reducing current consumption to 220 μA.
The LTC6373IDFM is housed in a compact 12-pin 4mm × 4mm DFN (LFCSP) package and operates over a temperature range of –40°C to 85°C, making it suitable for space-constrained applications with stringent temperature tolerance requirements.
Mingjiada Electronics maintains a long-term stock of ADI’s LTC6373IDFM precision instrumentation amplifier, offering brand-new, genuine stock with a stable supply chain. We provide a one-stop component service, including sample requests, bulk order fulfilment and high-value buyback of obsolete ICs.

II. LTC6373IDFM Specification Details:
Amplifier Type: Precision instrumentation amplifier
Number of Channels: 1
Programmable Gain: 0.25, 0.5, 1, 2, 4, 8, 16 V/V + Off
Gain Error: 0.015% (maximum)
Gain Error Drift: 1 ppm/°C (maximum)
Common-Mode Rejection Ratio (CMRR): 103 dB (minimum, G=16)
Input bias current: 25 pA (maximum)
Input offset voltage: 92 μV (maximum, G=16)
Input offset voltage drift: 1.7 μV/°C (maximum, G=16)
Input noise density: 8 nV/√Hz (G=16)
-3 dB bandwidth: 4 MHz (G=16)
Slew rate: 12 V/μs
Quiescent current: 4.4 mA
Shutdown current: 220 μA
Supply voltage range: Single supply 9 V to 36 V / Dual supply ±4.5 V to ±18 V
Operating temperature range: –40 °C to +85 °C

III. Key Features (LTC6373IDFM)
1. Programmable gain for flexible adaptation to a wide range of signal levels
The LTC6373IDFM supports seven pin-programmable gain settings: G = 0.25, 0.5, 1, 2, 4, 8 and 16 V/V, and also provides a shutdown function. From signal attenuation to high-gain amplification, engineers can switch flexibly via a simple 3-bit parallel interface, without the need to replace external resistors or adjust peripheral circuits.
2. Fully Differential Output, Perfectly Matched to High-Performance ADCs
The LTC6373IDFM features a fully differential output architecture, capable of directly driving high-performance differential-input ADCs. The output common-mode voltage can be independently adjusted via the VOCM pin, providing the ADC with an optimal input common-mode level and eliminating the need for additional level-shifting circuits.
3. Ultra-low input bias current, compatible with high-impedance sensors
With a maximum input bias current of just 25 pA, it can easily connect to high-impedance signal sources such as piezoelectric sensors and photodiodes, with virtually no source loading error.
4. Excellent DC accuracy and low noise
Gain error: 0.015% (maximum)
Gain error drift: 1 ppm/°C (maximum)
Input offset voltage: 92 μV (maximum, G=16)
Input offset voltage drift: 1.7 μV/°C (maximum, G=16)
Input noise density: 8 nV/√Hz (G=16)
5. High Common-Mode Rejection Ratio (CMRR)
CMRR as high as 103 dB (minimum, G=16), effectively suppressing common-mode interference in high-noise environments to extract weak differential signals.
6. Wide Bandwidth and High Slew Rate
-3 dB bandwidth: 4 MHz (G=16)
Slew rate: 12 V/μs
Unlike traditional voltage-feedback amplifiers, the LTC6373 maintains virtually the same bandwidth across all gain settings, a feature that is particularly valuable in multi-gain switching applications.
7. Wide Supply Voltage Range
The LTC6373IDFM supports single-supply operation from 9 V to 36 V, or dual-supply operation from ±4.5 V to ±18 V, making it compatible with a wide range of system power supply architectures.

IV. Typical Applications
Thanks to its high precision, wide supply voltage range, programmable gain and high integration, the LTC6373IDFM is widely used in the following scenarios:
Data acquisition systems
Biomedical instrumentation
Test and measurement equipment
Differential ADC drivers
Single-ended-to-differential conversion
Multiplexing applications

V. Mingjiada Electronics | LTC6373IDFM Integrated Supply and Recycling Services
As a specialist supplier of electronic components, Mingjiada Electronics consistently supplies the ADI (Analog Devices) LTC6373IDFM instrumentation amplifier, guaranteeing genuine products and ample stock. Engineers and procurement professionals are welcome to contact us by telephone for the latest quotations and technical support. The company also offers a long-term buy-back service for the LTC6373IDFM and the full range of ADI instrumentation amplifiers. We only accept stock sourced through official channels, such as distributors, trading companies and end-user factories; stock from unofficial sources will not be accepted.

If you require ADI LTC6373IDFM samples for testing, quotations for bulk purchases, technical support for signal chain solution selection, or wish to liquidate surplus stock of ADI amplifiers or linear ICs, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) to access personalised one-to-one procurement and buy-back services.