INA101HP High-Accuracy Instrumentation Amplifier DIP-14 (INA101HP IC)
The INA101HP is a high-accuracy, multistage instrumentation amplifier designed for precision signal acquisition. Housed in a 14-pin DIP package, it features a classic three-op-amp configuration that provides low noise, high common-mode rejection, and excellent stability over time and temperature. It is specifically engineered to amplify small differential signals in the presence of large common-mode voltages, making it ideal for industrial, medical, and scientific applications.
This IC is a professional choice in India for interfacing with low-level sensors such as thermocouples, RTDs, and strain gauge bridges. Its internal laser-trimmed resistors ensure high gain accuracy and extremely low offset voltage, which are critical for high-resolution data acquisition systems and weighing scales.
Key Features
- Low Offset Voltage: Maximum 25uV offset ensures minimal signal error.
- High Common-Mode Rejection: 106dB minimum (at G=1000) to filter out significant electrical noise.
- Low Noise: Optimized for low-frequency signal amplification (13nV/rtHz at 1kHz).
- Wide Gain Range: Programmable gain from 1 to 1000 using a single external resistor.
- Excellent Linearity: 0.002% maximum nonlinearity at gain of 100.
- Internal Protection: Input circuitry is protected against overvoltage conditions.
- Laser-Trimmed Resistors: Provides superior gain accuracy and CMRR stability.
Specifications
- IC Type: Instrumentation Amplifier
- Supply Voltage (VCC/VEE): +/-5V to +/-20V
- Input Voltage Range: +/-10V (typical at +/-15V supply)
- Gain Equation: G = 1 + (40k / RG)
- Bandwidth: 200kHz (at G=100)
- Slew Rate: 0.4 V/us
- Package Type: PDIP-14
- Mounting Type: Through-Hole
- Operating Temperature: -25 to +85 degrees Celsius
Interfaces
- Pin 1 (RG): Gain Set Resistor Connection 1
- Pin 2 (-IN): Inverting Input
- Pin 3 (+IN): Non-Inverting Input
- Pin 4 (RG): Gain Set Resistor Connection 2
- Pin 5 (Ref): Output Reference (usually tied to Ground)
- Pin 6 (-VCC): Negative Power Supply
- Pin 7 (NC): No Connection
- Pin 8 (NC): No Connection
- Pin 9 (Sense): Output Sense (usually tied to VOUT)
- Pin 10 (VOUT): Amplifier Output
- Pin 11 (+VCC): Positive Power Supply
- Pin 12 (NC): No Connection
- Pin 13 (NC): No Connection
- Pin 14 (NC): No Connection
