Overview
The INA118U/2K5 is a precision, low-power instrumentation amplifier produced by Texas Instruments. This device is designed for general-purpose applications and is known for its excellent accuracy and versatility. The INA118U/2K5 features a three op-amp design and is available in small, 8-pin packages, making it suitable for a wide range of applications, including those requiring low power consumption and high precision.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Offset Voltage | ±50 µV (max) | µV |
| Input Bias Current | 5 nA (max) | nA |
| Common-Mode Rejection Ratio (CMRR) | 110 dB (min at G = 1000) | dB |
| Supply Voltage Range | ±2.25 V to ±18 V | V |
| Quiescent Current | 350 µA | µA |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Types | 8-Pin Plastic DIP, SO-8 Surface-Mount | |
| Bandwidth | 70 kHz at G = 100 | kHz |
| Slew Rate | 0.9 V/µs | V/µs |
| Analog Input Voltage | ±40 V | V |
Key Features
- Low offset voltage: 50 µV (max)
- Low drift: 0.5 µV/°C (max)
- Low input bias current: 5 nA (max)
- High common-mode rejection ratio (CMRR): 110 dB (min at G = 1000)
- Inputs protected to ±40 V
- Wide supply range: ±2.25 V to ±18 V
- Low quiescent current: 350 µA
- Available in 8-pin plastic DIP and SO-8 surface-mount packages
- Single external resistor sets any gain from 1 to 10000
- Current-feedback input circuitry provides wide bandwidth, even at high gain
Applications
The INA118U/2K5 is suitable for a variety of applications due to its precision, low power consumption, and versatility. Some common applications include:
- Battery-operated systems
- Medical devices requiring high accuracy and low noise
- Industrial measurement and control systems
- Aerospace and defense applications where precision and reliability are critical
- Automotive systems requiring robust and accurate signal amplification
Q & A
- What is the input offset voltage of the INA118U/2K5?
The input offset voltage of the INA118U/2K5 is ±50 µV (max).
- What is the common-mode rejection ratio (CMRR) of the INA118U/2K5?
The CMRR of the INA118U/2K5 is 110 dB (min at G = 1000).
- What is the supply voltage range for the INA118U/2K5?
The supply voltage range for the INA118U/2K5 is ±2.25 V to ±18 V.
- What is the quiescent current of the INA118U/2K5?
The quiescent current of the INA118U/2K5 is 350 µA.
- What are the available package types for the INA118U/2K5?
The INA118U/2K5 is available in 8-pin plastic DIP and SO-8 surface-mount packages.
- What is the bandwidth of the INA118U/2K5 at a gain of 100?
The bandwidth of the INA118U/2K5 at a gain of 100 is 70 kHz.
- How is the gain set for the INA118U/2K5?
The gain for the INA118U/2K5 is set using a single external resistor, allowing gains from 1 to 10000.
- What is the operating temperature range for the INA118U/2K5?
The operating temperature range for the INA118U/2K5 is –40°C to +85°C.
- Is the INA118U/2K5 suitable for battery-operated systems?
Yes, the INA118U/2K5 is an excellent choice for battery-operated systems due to its low quiescent current and wide supply range.
- What is the slew rate of the INA118U/2K5?
The slew rate of the INA118U/2K5 is 0.9 V/µs.
- Are the inputs of the INA118U/2K5 protected?
Yes, the inputs of the INA118U/2K5 are protected to ±40 V.
