Overview
The OP400GP, produced by Analog Devices Inc., is a monolithic quad operational amplifier that offers high precision and low power consumption. It is the first quad op-amp to feature performance comparable to the OP77, a well-regarded industry standard. This device is designed to provide significant improvements over other quad amplifiers, including lower input offset voltage, lower power consumption, and high open-loop gain. The OP400GP is ideal for applications requiring multiple precision operational amplifiers where space and cost savings are critical.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | 60 | 220 | 400 | µV | |
| Average Input Offset Voltage Drift | TCVOS | 0.3 | 1.2 | 2.5 | µV/°C | |
| Input Offset Current | IOS | VCM = 0 V | 0.1 | 2.5 | 6.0 | nA |
| Input Bias Current | IB | VCM = 0 V | 0.9 | 5.0 | 12.0 | nA |
| Large-Signal Voltage Gain | AVO | RL = 10 kΩ | 3000 | 10000 | V/mV | |
| Input Voltage Range | IVR | ±12 | ±12.5 | V | ||
| Common-Mode Rejection | CMR | VCM = ±12 V | 115 | 135 | dB | |
| Power Supply Rejection Ratio | PSRR | VS = ±3 V to ±18 V | 0.15 | 3.2 | µV/V | |
| Supply Current per Amplifier | ISY | No load | 600 | 775 | µA |
Key Features
- Low Input Offset Voltage: Less than 150 µV with a drift of less than 1.2 µV/°C, ensuring high precision over a wide temperature range.
- Low Power Consumption: Draws less than 725 µA per amplifier, making it energy-efficient.
- High Open-Loop Gain: More than 5 million into a 10 kΩ load, providing high gain accuracy.
- High Common-Mode Rejection Ratio (CMR): More than 120 dB, ensuring minimal interference from common-mode signals.
- High Power Supply Rejection Ratio (PSRR): Less than 1.8 µV/V, reducing the impact of power supply noise.
- On-Chip Zener Zap Trimming: Eliminates the need for offset nulling, enhancing precision and reliability.
- Pin Compatibility: Compatible with LM148, HA4741, RM4156, and LT1014 operational amplifiers, making it a versatile upgrade option.
- Stable With Large Capacitive Loads: No oscillations with capacitive loads up to 10 nF, ensuring stability in various applications.
Applications
- Precision Instrumentation: Ideal for applications requiring high accuracy and low noise, such as in medical devices, test and measurement equipment, and industrial control systems.
- Audio and Video Equipment: Suitable for audio and video amplification where low noise and high fidelity are crucial.
- Industrial Automation: Used in control systems, sensors, and other industrial automation applications where precision and reliability are essential.
- Aerospace and Defense: Applicable in military and aerospace applications due to its performance over a wide temperature range and high reliability.
Q & A
- What is the input offset voltage of the OP400GP?
The input offset voltage of the OP400GP is less than 150 µV with a drift of less than 1.2 µV/°C.
- How much current does the OP400GP draw per amplifier?
The OP400GP draws less than 725 µA per amplifier).
- What is the open-loop gain of the OP400GP?
The open-loop gain of the OP400GP is more than 5 million into a 10 kΩ load).
- Is the OP400GP stable with large capacitive loads?
Yes, the OP400GP is stable with capacitive loads up to 10 nF without oscillations).
- What is the common-mode rejection ratio (CMR) of the OP400GP?
The CMR of the OP400GP is more than 120 dB).
- What is the power supply rejection ratio (PSRR) of the OP400GP?
The PSRR of the OP400GP is less than 1.8 µV/V).
- Is the OP400GP pin-compatible with other operational amplifiers?
Yes, the OP400GP is pin-compatible with LM148, HA4741, RM4156, and LT1014 operational amplifiers).
- What are the typical applications of the OP400GP?
The OP400GP is typically used in precision instrumentation, audio and video equipment, industrial automation, and aerospace and defense applications).
- What is the temperature range for the OP400GP?
The OP400GP operates over a temperature range of –55°C to +125°C).
- How does the OP400GP achieve low input offset voltage?
The OP400GP achieves low input offset voltage through on-chip Zener zap trimming, which eliminates the need for offset nulling).
