Overview
The LT5400BCMS8E-7#PBF, produced by Analog Devices Inc., is a quad matched resistor network designed to provide excellent matching specifications over a wide temperature range. This component is part of the LT5400 series, which is renowned for its high precision and stability. The LT5400 is particularly useful in applications requiring accurate resistor matching, such as difference amplifiers, voltage references, and bridge circuits.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Matching Specification | A-Grade: 0.01%, B-Grade: 0.025% | Over the entire temperature range |
| Matching Temperature Drift | 0.2 ppm/°C | |
| Operating Voltage | ±75V (±80V Abs Max) | |
| Absolute Resistor Value Temperature Drift | 8 ppm/°C | |
| Long-Term Stability | <2 ppm at 2000 Hrs | |
| Operating Temperature Range | –55°C to 150°C (LT5400MP), 0°C to 70°C (LT5400C), –40°C to 85°C (LT5400I), –40°C to 125°C (LT5400H) | Dependent on the specific grade |
| Package | 8-Lead MSOP with Exposed Pad | |
| Resistor Ratio | 1.25kΩ : 5kΩ (for LT5400-7) | Specific to the LT5400-7 model |
Key Features
- Excellent Matching: The LT5400 offers high precision matching with specifications as low as 0.01% for A-Grade and 0.025% for B-Grade.
- Temperature Stability: The component exhibits a matching temperature drift of 0.2 ppm/°C and an absolute resistor value temperature drift of 8 ppm/°C.
- Wide Operating Temperature Range: The LT5400 operates from –55°C to 150°C, depending on the specific grade.
- High Voltage Capability: It can handle operating voltages up to ±75V (±80V Abs Max).
- Long-Term Stability: The component ensures long-term stability with less than 2 ppm drift at 2000 hours.
- ESD Protection: The LT5400 can withstand up to ±1kV of electrostatic discharge (ESD, human body).
Applications
- Difference Amplifiers: The LT5400 is ideal for use in difference amplifiers due to its high matching specifications, ensuring excellent common-mode rejection ratio (CMRR).
- Voltage References: It is used in voltage reference circuits where precise ratiometric stability is required.
- Bridge Circuits: The component is suitable for bridge circuits that demand high accuracy and stability.
- Precision Summing/Subtracting Circuits: It can be used in precision summing and subtracting circuits where matched resistors are essential).
- Instrumentation Amplifiers: The LT5400 can be integrated into instrumentation amplifier designs to enhance CMRR and overall precision).
Q & A
- What is the matching specification of the LT5400?
The LT5400 offers matching specifications of 0.01% for A-Grade and 0.025% for B-Grade).
- What is the operating temperature range of the LT5400?
The operating temperature range varies by grade, from –55°C to 150°C for the LT5400MP, to 0°C to 70°C for the LT5400C, and other ranges for different grades).
- What is the maximum operating voltage for the LT5400?
The LT5400 can handle operating voltages up to ±75V (±80V Abs Max)).
- How stable is the LT5400 over time?
The LT5400 ensures long-term stability with less than 2 ppm drift at 2000 hours).
- What package type does the LT5400 come in?
The LT5400 is available in an 8-Lead MSOP package with an exposed pad).
- What are some typical applications of the LT5400?
The LT5400 is commonly used in difference amplifiers, voltage references, bridge circuits, precision summing/subtracting circuits, and instrumentation amplifiers).
- Can the LT5400 withstand electrostatic discharge (ESD)?
Yes, the LT5400 can withstand up to ±1kV of electrostatic discharge (ESD, human body)).
- What is the resistor ratio for the LT5400-7 model?
The resistor ratio for the LT5400-7 model is 1.25kΩ : 5kΩ).
- How does the LT5400 enhance CMRR in difference amplifiers?
The LT5400 enhances CMRR in difference amplifiers by providing high precision matching, which guarantees CMRR performance to be up to 2× better than independently matched resistors).
- Can all four resistors of the LT5400 be accessed independently?
Yes, all four resistors of the LT5400 can be accessed and biased independently, making it a versatile choice for various applications).
