Overview
The INA118UG4 is a precision, low-power instrumentation amplifier produced by Texas Instruments (formerly Burr-Brown). This device is designed for high accuracy and low power consumption, making it an excellent choice for a wide range of applications. The INA118UG4 operates with power supplies as low as ±2.25 V and has a quiescent current of only 350 µA, which is ideal for battery-operated systems. It features a versatile three op-amp design and is available in 8-pin plastic DIP and SO-8 surface-mount packages.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Offset Voltage, RTI (Initial) | ±10 | ±50 | ±500 | µV |
| Offset Voltage Drift | ±0.2 | ±0.5 | ±20 | µV/°C |
| Input Bias Current | - | 5 | - | nA |
| Common-Mode Rejection Ratio (CMRR) | - | 110 | - | dB |
| Supply Voltage Range | ±2.25 | - | ±18 | V |
| Quiescent Current | - | 350 | - | µA |
| Bandwidth (G = 100) | - | 70 kHz | - | - |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Low offset voltage: 50 µV maximum
- Low drift: 0.5 µV/°C maximum
- Low input bias current: 5 nA maximum
- High common-mode rejection ratio (CMRR): 110 dB minimum
- Inputs protected to ±40 V
- Wide supply range: ±2.25 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
Applications
- Pressure transmitter
- Temperature transmitter
- Weigh scale
- Electrocardiogram (ECG)
- Analog input module
- Data acquisition (DAQ)
Q & A
- What is the minimum supply voltage for the INA118UG4?
The minimum supply voltage for the INA118UG4 is ±2.25 V.
- What is the maximum offset voltage of the INA118UG4?
The maximum offset voltage of the INA118UG4 is 50 µV.
- What is the common-mode rejection ratio (CMRR) of the INA118UG4?
The CMRR of the INA118UG4 is 110 dB minimum.
- What is the quiescent current of the INA118UG4?
The quiescent current of the INA118UG4 is 350 µA.
- What are the available packages for the INA118UG4?
The INA118UG4 is available in 8-pin plastic DIP and SO-8 surface-mount packages.
- How is the gain set for the INA118UG4?
The gain for the INA118UG4 is set by a single external resistor and can range from 1 to 10000.
- What is the operating temperature range for the INA118UG4?
The operating temperature range for the INA118UG4 is –40°C to +85°C.
- What are some typical applications of the INA118UG4?
Typical applications include pressure transmitters, temperature transmitters, weigh scales, electrocardiograms (ECG), analog input modules, and data acquisition (DAQ) systems.
- Is the INA118UG4 suitable for battery-operated systems?
Yes, the INA118UG4 is suitable for battery-operated systems due to its low quiescent current of 350 µA.
- What is the input protection of the INA118UG4?
The inputs of the INA118UG4 are protected to ±40 V without damage.
