Overview
The INA105KP, produced by Texas Instruments, is a monolithic gain = 1 differential amplifier. It consists of a precision op amp and on-chip metal film resistors that are laser trimmed for accurate gain and high common-mode rejection. This device is designed to provide a precision circuit function without the need for an expensive precision resistor network. The INA105KP is available in various packages, including 8-pin plastic DIP, SO-8 surface-mount, and TO-99 metal packages, making it versatile for different application needs.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Gain Error | 0.005% | 0.01% | 0.025% | % |
| Nonlinearity | 0.0002% | 0.001% | % | |
| Common-Mode Rejection Ratio (CMRR) | 80 | 90 | 100 | dB |
| Input Impedance (Differential) | 50kΩ | Ω | ||
| Input Impedance (Common-Mode) | 50kΩ | Ω | ||
| Rated Voltage | 10 | 12 | V | |
| Rated Current | -5 | +20 | mA | |
| Power Supply Voltage | ±5 | ±15 | ±18 | V |
| Quiescent Current | ±1.5 | ±2 | mA | |
| Operating Temperature Range | -40 | +85 | °C |
Key Features
- High common-mode rejection ratio (CMRR) of 86dB minimum over temperature
- Gain error of 0.01% maximum
- Nonlinearity of 0.001% maximum
- No external adjustments required
- Easy to use and highly versatile
- Available in plastic DIP, TO-99 hermetic metal, and SO-8 SOIC packages
- Low cost solution
Applications
- Precision instrumentation amplifiers
- Difference amplifiers
- Current receivers with compliance to rails
- Precision summing amplifiers
- Precision voltage references
- Precision unity-gain buffers
- Pseudoground generators
- Voltage-controlled current sources
- Window comparators
Q & A
- What is the INA105KP? The INA105KP is a monolithic gain = 1 differential amplifier consisting of a precision op amp and on-chip metal film resistors.
- What are the key features of the INA105KP? Key features include high CMRR, low gain error, low nonlinearity, no external adjustments required, and availability in various packages.
- What are the typical applications of the INA105KP? Typical applications include precision instrumentation amplifiers, difference amplifiers, current receivers, precision summing amplifiers, and more.
- What is the operating temperature range of the INA105KP? The operating temperature range is -40°C to +85°C.
- What is the common-mode rejection ratio (CMRR) of the INA105KP? The CMRR is 86dB minimum over temperature.
- What is the gain error of the INA105KP? The gain error is 0.01% maximum.
- What is the nonlinearity of the INA105KP? The nonlinearity is 0.001% maximum.
- Does the INA105KP require external adjustments? No, the INA105KP does not require external adjustments.
- In what packages is the INA105KP available? The INA105KP is available in 8-pin plastic DIP, SO-8 surface-mount, and TO-99 metal packages.
- What is the power supply voltage range for the INA105KP? The power supply voltage range is ±5V to ±18V.
