Overview
The AD8574ARZ is a zero-drift, rail-to-rail operational amplifier produced by Analog Devices Inc. This quad-channel amplifier is designed to provide high accuracy and low drift, making it suitable for a variety of precision measurement and instrumentation applications. The AD8574ARZ operates from a single supply voltage ranging from 2.7 V to 5.5 V and features an ultra-low input offset voltage of 1 µV and a low input bias current of 10 pA. The amplifier's architecture includes a spread-spectrum, auto-zero technique that eliminates intermodulation effects and ensures high dc precision and low distortion for ac signals.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | AD8574ARZ |
| Manufacturer | Analog Devices Inc. |
| Description | Zero-Drift Amplifier 4 Circuit Rail-to-Rail 14-SOIC |
| Voltage - Supply, Single/Dual (±) | 2.7 V ~ 5.5 V |
| Voltage - Input Offset | 1 µV |
| Supplier Device Package | 14-SOIC |
| Slew Rate | 0.4 V/µs |
| Output Type | Rail-to-Rail |
| Operating Temperature | -40°C ~ 125°C |
| Number of Circuits | 4 |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Gain Bandwidth Product | 1.5 MHz |
| Current - Supply | 850 µA |
| Current - Output / Channel | 30 mA |
| Current - Input Bias | 10 pA |
Key Features
- Zero-drift architecture with ultra-low input offset voltage of 1 µV and low input bias current of 10 pA.
- Rail-to-rail input and output swings, allowing the input common-mode voltage range to reach both supply rails.
- Low supply current of 850 µA and high output current capability of 30 mA per channel.
- Operating temperature range from -40°C to 125°C, making it suitable for a wide range of environments.
- No external capacitors required due to the auto-zero technique used.
- High common-mode rejection ratio (CMRR) of up to 140 dB and large signal voltage gain of up to 145 dB.
Applications
- Temperature sensors and thermocouple amplifiers.
- Pressure sensors and strain gage amplifiers.
- Precision current sensing and medical instrumentation.
- Automotive and industrial control systems requiring high precision and low drift.
Q & A
- What is the input offset voltage of the AD8574ARZ? The input offset voltage is 1 µV.
- What is the operating temperature range of the AD8574ARZ? The operating temperature range is from -40°C to 125°C.
- How many channels does the AD8574ARZ have? The AD8574ARZ is a quad-channel amplifier.
- What is the supply voltage range for the AD8574ARZ? The supply voltage range is from 2.7 V to 5.5 V.
- Does the AD8574ARZ require external capacitors? No, the AD8574ARZ does not require external capacitors due to its auto-zero technique.
- What is the slew rate of the AD8574ARZ? The slew rate is 0.4 V/µs.
- What is the common-mode rejection ratio (CMRR) of the AD8574ARZ? The CMRR is up to 140 dB.
- What is the gain bandwidth product of the AD8574ARZ? The gain bandwidth product is 1.5 MHz.
- What is the typical input bias current of the AD8574ARZ? The typical input bias current is 10 pA.
- What type of packaging does the AD8574ARZ come in? The AD8574ARZ comes in a 14-SOIC package).
