Features and Benefits
- Optimized for Use with Fully Differential and Difference Amplifiers
- Excellent Matching
- ±0.003% Resistor Ratio Matching (Max)
- 96.5dB CMRR (Min)
- ±25ppm Gain Error (Max)
- ±0.5ppm/°C Matching Temperature Drift (Max)
- ±35V Operating Voltage (±36V Abs Max)
- 8ppm/°C Absolute Resistor Value Temperature Drift
- Long-Term Stability: <8ppm at 6500 Hours
- ESD Protected Inputs
- –55°C to 150°C Operating Temperature
- 10-Lead MSOP Package
The LT5401 is an ultra-precision matched resistor network optimized for use with fully differential or difference amplifiers, and with excellent matching specifications over the entire temperature range. The LT5401 contains two strings of matched resistors, each providing three tap points. The resulting matched ratios are well suited for precisely setting a differential amplifier’s gain or attenuation.
When used to configure differential or difference gain, the LT5401’s excellent ratio matching ensures high CMRR, low gain errors and low gain drift to levels far too difficult to achieve with discrete passive components. This high level of precision reduces calibration requirements in many applications and offers 10 times higher performance than a ±0.01% discrete solution.
The LT5401 is available in a compact 10-lead MSOP package with exposed paddle for improved thermal performance over a temperature range of –55°C to 150°C.
- Fully Differential Amplifiers
- Difference Amplifiers
- Reference Dividers
- Precision Summing/Subtracting
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
The Analog Devices, Inc., EVAL-LT5401_32FDAZ allows the user to evaluate the performance of the LT5401. The LT5401 is an ultraprecision matching resistor network used to configure the gain of a fully differential amplifier. The on-board LT5401 is paired with a 300 MHz, fully differential amplifier circuit (the ADA4932-1).
The EVAL-LT5401_32FDAZ accepts either a single-ended or a differential input signal.
Optimized power and ground planes ensure low noise and high speed operation. Component placement and power supply bypassing allow maximum circuit flexibility and optimal performance.
Full specifications on the LT5401 and the ADA4932-1 are available in the LT5401 and ADA4932-1 data sheets, respectively. Consult the data sheets in conjunction with this user guide when working with the EVAL-LT5401_32FDAZ.
- Fully differential amplifiers
Features & Benefits
- Enables quick evaluation of the LT5401 with a fully differential amplifier
- Standalone, fully differential evaluation board with high CMRR vs. frequency (82 dB at 1 MHz)
- High gain precision over full operating temperature range (0.01%)
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.