Overview
The INA152EA/2K5, produced by Texas Instruments, is a low-power, unity-gain difference amplifier designed for a wide range of general-purpose applications. This component is housed in a small MSOP-8 package and features a CMOS op amp along with a precision resistor network. The on-chip resistors are laser trimmed to ensure accurate gain and high common-mode rejection. The INA152 operates from single (+2.7V to +20V) or dual (±1.35V to ±10V) supplies, making it versatile for various power supply configurations.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage | VCM = 0V | ±250 | ±1500 | µV | |
| Offset Voltage Drift vs Temperature | TA = –40°C to +85°C | ±3 | ±15 | µV/°C | |
| Common-Mode Rejection | 0V < VCM < +5V, RSRC = 0Ω | 80 | 94 | dB | |
| Differential Input Impedance | 80 | kΩ | |||
| Common-Mode Input Impedance | 80 | kΩ | |||
| Output Voltage Swing | RL = 10kΩ to GND | (V+) – 0.2 | (V–) + 0.2 | V | |
| Supply Voltage Range | +2.7V to +20V (Single) | ±1.35V to ±10V (Dual) | V |
Key Features
- Low power consumption
- Unity-gain difference amplifier with high common-mode rejection (CMR) of up to 94dB
- Low offset voltage of ±250µV and low offset drift of ±3µV/°C
- Wide supply range: single (+2.7V to +20V) or dual (±1.35V to ±10V)
- Output voltage swing to within 50mV of either rail
- Laser-trimmed on-chip resistors for accurate gain and high CMR
- MSOP-8 package for compact design
Applications
- Difference input amplifier
- Unity-gain inverting amplifier
- Summing amplifier
- Synchronous demodulator
- Current and differential line receiver
- Voltage-controlled current source
- Battery-powered systems
- Low-cost automotive instrumentation
- Precision instrumentation amplifier when combined with op amps
- Differential input data acquisition
- Precision voltage-to-current converters
Q & A
- What is the typical input offset voltage of the INA152?
The typical input offset voltage is ±250µV.
- What is the common-mode rejection ratio (CMR) of the INA152?
The CMR is up to 94dB.
- What is the operating temperature range of the INA152?
The INA152 is specified for operation over the extended industrial temperature range of –40°C to +85°C.
- How does the INA152 handle differential input signals?
The differential input signal is connected to pins 2 and 3, and the source impedances connected to the inputs must be nearly equal to assure good common-mode rejection.
- Can the INA152 be used in battery-powered systems?
- What is the output voltage swing of the INA152?
The output voltage swing is to within 50mV of either rail.
- How can the offset voltage of the INA152 be adjusted?
The offset voltage can be adjusted using an optional circuit where a voltage applied to the Ref terminal is summed with the output signal.
- What are some common applications of the INA152?
The INA152 is used in various applications such as difference input amplifiers, summing amplifiers, synchronous demodulators, and precision instrumentation amplifiers when combined with op amps.
- What is the package type of the INA152EA/2K5?
The INA152EA/2K5 is housed in an MSOP-8 package.
- How does the INA152 handle input common-mode voltage range?
The input common-mode voltage range extends to above the positive and negative rails, and the linear common-mode range is nearly twice the supplies.
