Overview
The OPA2111AM is a high precision monolithic dielectrically isolated FET (Difet) operational amplifier produced by Burr-Brown Corporation. This device is renowned for its outstanding performance characteristics, making it suitable for the most critical instrumentation applications. The OPA2111AM features very low bias current, low offset and drift, and extremely low noise, achieved through patented circuit design techniques and laser trimming of thin-film resistors. Its cascode design enhances input specifications and reduces susceptibility to flicker noise.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage | VCM = 0VDC | ±0.22 | ±0.75 | ±1.2 | mV |
| Average Drift | ±2 | ±6 | µV/°C | ||
| Supply Rejection | 86 | 100 | |||
| Input Noise Voltage (fO = 10Hz) | 100% Tested | 40 | 80 | nV/√Hz | |
| Input Noise Voltage (fO = 1kHz) | 100% Tested | 8 | 15 | nV/√Hz | |
| Temperature Range | –25°C | +85°C | °C | ||
| Supply Voltage | ±15VDC | ±18VDC | VDC | ||
| Internal Power Dissipation | TJ ≤ +175°C | 500mW | mW | ||
| Operating Temperature Range | –55°C | +125°C | °C |
Key Features
- High precision monolithic dielectrically isolated FET (Difet) operational amplifier.
- Very low bias current due to dielectric isolation with on-chip guarding.
- Laser trimming of thin-film resistors for very low offset and drift.
- Extremely low noise achieved through patented circuit design techniques.
- Cascade design for high precision input specifications and reduced susceptibility to flicker noise.
- Standard dual op amp pin configuration for easy upgrading of existing designs.
Applications
The OPA2111AM is ideal for use in critical instrumentation applications, including but not limited to:
- Precision measurement and data acquisition systems.
- High-performance audio equipment.
- Medical devices requiring low noise and high precision.
- Industrial control and automation systems.
- Scientific instruments and laboratory equipment.
Q & A
- What is the input offset voltage of the OPA2111AM?
The input offset voltage of the OPA2111AM is typically ±0.75 mV, with a maximum of ±1.2 mV at VCM = 0VDC.
- What is the average drift of the OPA2111AM?
The average drift of the OPA2111AM is typically ±6 µV/°C.
- What is the supply voltage range for the OPA2111AM?
The supply voltage range for the OPA2111AM is ±15VDC, with an absolute maximum of ±18VDC.
- What is the operating temperature range for the OPA2111AM?
The operating temperature range for the OPA2111AM is –25°C to +85°C.
- What is the internal power dissipation limit for the OPA2111AM?
The internal power dissipation limit for the OPA2111AM is 500mW at TJ ≤ +175°C.
- What are the key features of the OPA2111AM's design?
The OPA2111AM features a high precision monolithic dielectrically isolated FET (Difet) design, very low bias current, laser-trimmed thin-film resistors, and a cascode design for reduced flicker noise.
- What types of applications is the OPA2111AM suitable for?
The OPA2111AM is suitable for critical instrumentation applications, including precision measurement, high-performance audio, medical devices, industrial control, and scientific instruments.
- What is the input noise voltage of the OPA2111AM at 1 kHz?
The input noise voltage of the OPA2111AM at 1 kHz is typically 15 nV/√Hz.
- What is the common-mode rejection ratio (CMRR) of the OPA2111AM?
The common-mode rejection ratio (CMRR) of the OPA2111AM is typically around 100 dB.
- What are the package options available for the OPA2111AM?
The OPA2111AM is available in TO-99 and 8-Pin Plastic DIP packages.
