Overview
The INA111AU/1KG4 is a high-speed, FET-input instrumentation amplifier produced by Texas Instruments. This amplifier is designed to offer excellent performance with extended bandwidth and fast settling times. It uses a current-feedback topology, providing a bandwidth of 2 MHz at a gain of 10 and a settling time of 4 microseconds to 0.01% at a gain of 100. The INA111AU/1KG4 is available in a 16-pin SOIC (DW) package and is specified for an operating temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (DW), 16 pins |
| Operating Temperature Range | -40°C to +85°C |
| Bandwidth at Min Gain (Typ) | 2 MHz |
| Common-Mode Rejection Ratio (CMRR) (Min) | 106 dB |
| Input Bias Current (Max) | 20 pA |
| Input Offset Voltage (Max) | 500 µV |
| Input Offset Voltage Drift (Max) | 5 µV/°C |
| Supply Voltage (Max) | ±18 V |
| Supply Current (Typ) | 3.3 mA |
| Slew Rate (Nom) | 17 V/µs |
| Gain Range | 1 to over 1000 V/V |
Key Features
- FET Input: Input bias current is under 20 pA, simplifying input filtering and limiting circuitry.
- High Speed: Extended bandwidth of 2 MHz at a gain of 10 and fast settling time of 4 microseconds to 0.01% at a gain of 100.
- Low Offset Voltage: Maximum offset voltage of 500 µV and low offset voltage drift of 5 µV/°C, laser trimmed for excellent DC accuracy.
- High Common-Mode Rejection: Minimum CMRR of 106 dB.
- Flexible Gain Setting: A single external resistor sets any gain from 1 to over 1000.
Applications
- Medical Instrumentation: Suitable for medical devices requiring high precision and low noise.
- Data Acquisition: Ideal for data acquisition systems that need high-speed and accurate signal amplification.
Q & A
- What is the operating temperature range of the INA111AU/1KG4?
The operating temperature range is -40°C to +85°C.
- What is the maximum input bias current of the INA111AU/1KG4?
The maximum input bias current is 20 pA.
- What is the bandwidth of the INA111AU/1KG4 at a gain of 10?
The bandwidth is 2 MHz at a gain of 10.
- How is the gain of the INA111AU/1KG4 set?
The gain is set by a single external resistor and can range from 1 to over 1000.
- What is the common-mode rejection ratio (CMRR) of the INA111AU/1KG4?
The minimum CMRR is 106 dB.
- What are the typical supply currents for the INA111AU/1KG4?
The typical supply current is 3.3 mA.
- Is the INA111AU/1KG4 RoHS compliant?
Yes, the INA111AU/1KG4 is RoHS compliant.
- What is the slew rate of the INA111AU/1KG4?
The slew rate is 17 V/µs.
- What are the typical noise levels at 1 kHz for the INA111AU/1KG4?
The typical noise at 1 kHz is around 10 nV/√Hz.
- What are the package options for the INA111AU/1KG4?
The INA111AU/1KG4 is available in 16-pin SOIC (DW) packages.
