Overview
The LT1990IS8#TRPBF, produced by Analog Devices Inc., is a micropower precision difference amplifier. This component is designed to operate with a very high common mode input voltage range, making it ideal for various high-voltage monitoring and signal acquisition applications. It features a fixed gain of 10 and is available in 8-pin SO and MSOP packages, offering flexibility in design and implementation. The LT1990IS8#TRPBF is characterized by its low power consumption, rail-to-rail output, and robust input protection, making it a reliable choice for precision instrumentation and monitoring systems.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Total Supply Voltage (V+ to V–) | 36 | V | ||
| Input Voltage Range Each Input Continuous | ±250 | V | ||
| Input Voltage Range Each Input Transient (0.1s) | ±350 | V | ||
| Differential Input Voltage Range | ±500 | V | ||
| Supply Current | 120 | 180 | µA | |
| Bandwidth (–3dB) | 100 | 110 | kHz | |
| Slew Rate | 0.8 | 1.2 | V/µs | |
| Settling Time to 0.01% (10V Output Step) | 25 | µs | ||
| Common Mode Rejection Ratio (CMRR) | 70 | dB | ||
| Operating Temperature Range | –40 | 85 | °C |
Key Features
- Micropower operation with a maximum supply current of 180µA.
- Wide supply range from 2.7V to 36V.
- Rail-to-rail output for maximum dynamic range.
- High common mode input voltage range up to ±250V.
- Input protection against common mode voltage transients up to ±350V and differential voltages up to ±500V.
- Pin-selectable gains of 1 or 10.
- High precision with low gain error and nonlinearity.
- Fault-protected front ends and level sensing capabilities.
Applications
- Battery cell voltage monitoring.
- High voltage current sensing.
- Signal acquisition in noisy environments.
- Level sensing and isolation.
- Precision instrumentation and monitoring systems.
- High side and low side current or voltage monitoring.
Q & A
- What is the maximum supply voltage for the LT1990IS8#TRPBF? The maximum supply voltage is 36V.
- What are the available package types for the LT1990IS8#TRPBF? It is available in 8-pin SO and MSOP packages.
- What is the common mode input voltage range of the LT1990IS8#TRPBF? The common mode input voltage range is up to ±250V.
- How much current does the LT1990IS8#TRPBF typically consume? It typically consumes less than 120µA of supply current.
- What are the pin-selectable gains for the LT1990IS8#TRPBF? The gains are selectable between 1 and 10.
- What is the bandwidth of the LT1990IS8#TRPBF? The bandwidth is approximately 100kHz.
- Is the LT1990IS8#TRPBF protected against input voltage transients? Yes, it is protected against common mode voltage transients up to ±350V and differential voltages up to ±500V.
- What is the operating temperature range for the LT1990IS8#TRPBF? The operating temperature range is from –40°C to 85°C.
- What are some typical applications of the LT1990IS8#TRPBF? Typical applications include battery cell voltage monitoring, high voltage current sensing, and signal acquisition in noisy environments.
- How does the LT1990IS8#TRPBF achieve high precision? It achieves high precision through its low gain error and nonlinearity, along with a high CMRR.
