Overview
The INA154U/2K5 is a high-speed, precision difference amplifier produced by Texas Instruments. It is designed as a unity-gain difference amplifier, consisting of a precision op amp with a precision resistor network. The on-chip resistors are laser trimmed to ensure accurate gain and high common-mode rejection. This amplifier operates over a wide supply range of ±4V to ±18V and is specified for operation over the extended industrial temperature range of –40°C to +85°C. It is available in an SO-8 surface-mount package, making it suitable for various applications requiring precise differential signal amplification.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Offset Voltage | Initial | ±100 | ±750 | ±1500 | µV |
| Offset Voltage Drift | vs Temperature | ±2 | ±20 | µV/°C | |
| Gain Error | ±0.05% | % | |||
| Bandwidth | 3MHz | Hz | |||
| Slew Rate | 14V/µs | V/µs | |||
| Settling Time | to 0.01% | 3µs | µs | ||
| Quiescent Current | IO = 0mA | 2.4mA | mA | ||
| Operating Temperature Range | –40°C | +85°C | °C | ||
| Supply Voltage Range | ±4V | ±18V | V |
Key Features
- Low offset voltage: ±750µV max
- Low offset drift: ±2µV/°C
- Low gain error: ±0.05% max
- Wide bandwidth: 3MHz
- High slew rate: 14V/µs
- Fast settling time: 3µs to 0.01%
- Wide supply range: ±4V to ±18V
- Low quiescent current: 2.4mA
- SO-8 surface-mount package
- Extended industrial temperature range: –40°C to +85°C
Applications
- Differential input amplifier
- Instrumentation amplifier building block
- Unity-gain inverting amplifier
- Summing amplifier
- Differential current receiver
- Voltage-controlled current source
- Synchronous demodulator
Q & A
- What is the primary function of the INA154U/2K5?
The INA154U/2K5 is a high-speed, precision difference amplifier designed to amplify differential signals with high accuracy and low noise.
- What is the typical offset voltage of the INA154U/2K5?
The typical offset voltage is ±750µV.
- What is the slew rate of the INA154U/2K5?
The slew rate is 14V/µs.
- What is the operating temperature range of the INA154U/2K5?
The operating temperature range is –40°C to +85°C.
- What is the supply voltage range for the INA154U/2K5?
The supply voltage range is ±4V to ±18V.
- What package type is the INA154U/2K5 available in?
The INA154U/2K5 is available in an SO-8 surface-mount package.
- What are some common applications of the INA154U/2K5?
Common applications include differential input amplifiers, instrumentation amplifier building blocks, unity-gain inverting amplifiers, summing amplifiers, differential current receivers, voltage-controlled current sources, and synchronous demodulators.
- How does the INA154U/2K5 handle common-mode rejection?
The INA154U/2K5 features on-chip resistors that are laser trimmed to maintain high common-mode rejection over temperature.
- Can the offset voltage of the INA154U/2K5 be adjusted?
Yes, the offset voltage can be adjusted using an optional circuit as described in the datasheet.
- What is the quiescent current of the INA154U/2K5?
The quiescent current is 2.4mA.
