Overview
The OP400HPZ, produced by Analog Devices Inc., is a monolithic quad operational amplifier that offers OP77-type performance without sacrificing precision. This amplifier is designed to provide significant improvements over industry-standard op amps, such as the OP07, while maintaining low power consumption. The OP400HPZ features an extremely low input offset voltage and drift, high open-loop gain, and excellent common-mode rejection ratio (CMR) and power supply rejection ratio (PSRR). It is ideal for applications requiring multiple precision operational amplifiers and low power consumption.
Key Specifications
| Parameter | Symbol | Conditions | Min | 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 | VCM = 0 V, RL = 10 kΩ | 3000 | 10,000 | 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
- Extremely low input offset voltage of less than 150 µV and drift of less than 1.2 µV/°C.
- High open-loop gain of more than 5 million into a 10 kΩ load.
- Low input bias current of less than 3 nA.
- Excellent common-mode rejection ratio (CMR) of more than 120 dB and power supply rejection ratio (PSRR) of less than 1.8 µV/V.
- Low power consumption, drawing less than 725 µA per amplifier.
- On-chip Zener zap trimming for low input offset voltage without the need for offset nulling.
- Industry-standard quad pinout without null terminals.
- Low voltage noise density of 11 nV/√Hz at 10 Hz.
Applications
The OP400HPZ is suitable for various applications that require multiple precision operational amplifiers and low power consumption. These include:
- Precision instrumentation and measurement systems.
- Medical devices and diagnostic equipment.
- Aerospace and military applications due to its performance over the full military temperature range.
- Industrial control systems where high accuracy and low power are critical.
- Audio and video equipment requiring high precision and low noise.
Q & A
- What is the input offset voltage of the OP400HPZ?
The input offset voltage of the OP400HPZ is less than 150 µV. - What is the typical input bias current of the OP400HPZ?
The typical input bias current is less than 3 nA. - What is the common-mode rejection ratio (CMR) of the OP400HPZ?
The CMR is more than 120 dB. - How much power does each amplifier in the OP400HPZ consume?
Each amplifier draws less than 725 µA. - What is the voltage noise density of the OP400HPZ?
The voltage noise density is 11 nV/√Hz at 10 Hz. - Is the OP400HPZ suitable for military applications?
Yes, it performs over the full military temperature range. - What is the maximum supply voltage for the OP400HPZ?
The maximum supply voltage is ±20 V. - What is the differential input voltage limit for the OP400HPZ?
The differential input voltage limit is ±30 V. - Does the OP400HPZ require offset nulling?
No, it uses on-chip Zener zap trimming to achieve low input offset voltage without the need for offset nulling. - What are the typical applications of the OP400HPZ?
It is used in precision instrumentation, medical devices, aerospace, industrial control systems, and audio/video equipment.
