Overview
The INA118UB/2K5G4, produced by Texas Instruments, is a low-power, general-purpose instrumentation amplifier known for its excellent accuracy and versatility. This device features a three op-amp design and is available in small packages, making it suitable for a wide range of applications. The INA118 offers current-feedback input circuitry, which provides wide bandwidth even at high gain settings (up to 70 kHz at G = 100). It is laser-trimmed for low offset voltage, drift, and high common-mode rejection, making it an excellent choice for precision instrumentation needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Offset Voltage (Maximum) | 50 | µV |
| Drift (Maximum) | 0.5 | µV/°C |
| Input Bias Current (Maximum) | 5 | nA |
| Common-Mode Rejection Ratio (Minimum) | 110 | dB (at G = 1000) |
| Input Protection | ±40 | V |
| Supply Range | ±2.25 to ±18 | V |
| Quiescent Current | 350 | µA |
| Operating Temperature Range | –40°C to +85°C | |
| Package Types | 8-Pin plastic DIP, SO-8 |
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
- Current-feedback input circuitry for wide bandwidth even at high gain
Applications
- Pressure transmitter
- Temperature transmitter
- Weigh scale
- Electrocardiogram (ECG)
- Analog input module
- Data acquisition (DAQ)
Q & A
- What is the maximum offset voltage of the INA118UB/2K5G4?
The maximum offset voltage is 50 µV.
- What is the drift specification of the INA118UB/2K5G4?
The drift is 0.5 µV/°C, maximum.
- What is the input bias current of the INA118UB/2K5G4?
The input bias current is 5 nA, maximum.
- What is the common-mode rejection ratio (CMRR) of the INA118UB/2K5G4?
The CMRR is 110 dB, minimum at G = 1000.
- What is the input protection voltage of the INA118UB/2K5G4?
The inputs are protected to ±40 V.
- What is the supply range of the INA118UB/2K5G4?
The supply range is ±2.25 to ±18 V.
- What is the quiescent current of the INA118UB/2K5G4?
The quiescent current is 350 µA.
- In what packages is the INA118UB/2K5G4 available?
The device is available in 8-pin plastic DIP and SO-8 surface-mount packages.
- What is the operating temperature range of the INA118UB/2K5G4?
The operating temperature range is –40°C to +85°C.
- How is the gain set for the INA118UB/2K5G4?
A single external resistor sets any gain from 1 to 10000.
