Overview
The INA126E/2K5G4, produced by Texas Instruments, is a precision instrumentation amplifier designed for accurate and low-noise differential signal acquisition. This component is part of the INA126 series, which includes single and dual versions, and is particularly suited for portable instrumentation and data acquisition systems. The INA126E/2K5G4 features a two-op-amp design, offering low quiescent current and a wide operating voltage range, making it ideal for various industrial and medical applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Quiescent Current (per channel) | 175 | 200 | µA | |
| Supply Voltage Range | ±1.35 | ±15 | ±18 | V |
| Offset Voltage | 250 | 500 | µV | |
| Offset Voltage Drift | 3 | 5 | µV/°C | |
| Noise | 35 | nV/√Hz | ||
| Input Bias Current | 25 | nA | ||
| Bandwidth (–3dB) at G=5 | 200 | kHz | ||
| Slew Rate at G=5 | 0.4 | V/µs | ||
| Settling Time (0.01%) at G=5 | 30 | µs | ||
| Operating Temperature Range | –40 | +85 | °C | |
| Package Type | VSSOP (8-pin) |
Key Features
- Low Quiescent Current: 175 µA per channel, making it suitable for battery-powered devices.
- Wide Supply Range: Operates from ±1.35 V to ±18 V, providing flexibility in various applications.
- Low Offset Voltage: Maximum of 250 µV, ensuring high accuracy in signal acquisition.
- Low Offset Drift: Maximum of 3 µV/°C, maintaining stability over temperature changes.
- Low Noise: 35 nV/√Hz, ideal for low-noise signal processing.
- Low Input Bias Current: Maximum of 25 nA, reducing the impact on the input signal.
- Adjustable Gain: Gain can be set from 5 V/V to 10000 V/V with a single external resistor.
- Multiple Package Options: Available in PDIP, SOIC, and VSSOP packages for different design needs.
Applications
- Level Transmitter: Used in industrial control systems to measure and transmit level signals.
- Flow Transmitter: Employed in systems that measure and transmit flow rates.
- Multiparameter Patient Monitor: Utilized in medical devices to monitor various patient parameters.
- Mixed Module (AI, AO, DI, DO): Integrated into modules that combine analog and digital inputs and outputs.
- AC Charging (Pile) Station: Used in charging systems for electric vehicles or other applications.
- Infusion Pump: Applied in medical devices for precise fluid delivery.
- Electrocardiogram (ECG): Employed in medical devices for heart activity monitoring.
Q & A
- What is the typical quiescent current of the INA126E/2K5G4?
The typical quiescent current is 175 µA per channel.
- What is the operating voltage range of the INA126E/2K5G4?
The operating voltage range is from ±1.35 V to ±18 V.
- What is the maximum offset voltage of the INA126E/2K5G4?
The maximum offset voltage is 250 µV.
- How does the gain of the INA126E/2K5G4 get adjusted?
The gain can be set from 5 V/V to 10000 V/V with a single external resistor.
- What is the typical noise level of the INA126E/2K5G4?
The typical noise level is 35 nV/√Hz.
- What are the package options available for the INA126 series?
The INA126 series is available in PDIP, SOIC, and VSSOP packages.
- What is the operating temperature range of the INA126E/2K5G4?
The operating temperature range is from –40°C to +85°C.
- What are some common applications of the INA126E/2K5G4?
Common applications include level transmitters, flow transmitters, multiparameter patient monitors, and infusion pumps.
- How does the INA126E/2K5G4 handle input bias current?
The INA126E/2K5G4 has a low input bias current of 25 nA maximum.
- What is the slew rate of the INA126E/2K5G4 at a gain of 5?
The slew rate at a gain of 5 is 0.4 V/µs.
