Overview
The AD8572ARU is a dual-channel, zero-drift operational amplifier produced by Analog Devices Inc. This amplifier is part of the AD857x family, which includes single, dual, and quad amplifier configurations. The AD8572ARU is known for its high accuracy, low offset voltage, and low drift, making it suitable for a wide range of precision applications.
It operates on a single supply voltage ranging from 2.7 V to 5 V and features rail-to-rail input and output swings. The amplifier uses a spread-spectrum, auto-zero technique to eliminate intermodulation effects, ensuring high dc precision and low distortion for ac signals.
Key Specifications
| Specification | Value |
|---|---|
| Package | 8-TSSOP (0.173, 4.40mm Width) |
| Number of Channels | Dual |
| Supply Voltage Range | 2.7 V to 5 V |
| Input Offset Voltage | 1 μV |
| Input Offset Voltage Drift | 0.005 μV/°C |
| Common-Mode Rejection Ratio (CMRR) | 130 dB to 140 dB |
| Power Supply Rejection Ratio (PSRR) | 130 dB to 140 dB |
| Input Bias Current | 10 pA typical |
| Supply Current per Op Amp | 750 μA |
| Overload Recovery Time | 50 μs |
| Operating Temperature Range | −40°C to +125°C |
Key Features
- Zero-drift, single-supply operational amplifier with rail-to-rail input and output swings
- Ultralow input offset voltage of 1 μV and low drift of 0.005 μV/°C
- High CMRR and PSRR of up to 140 dB
- Ultralow input bias current of 10 pA typical
- Low supply current of 750 μA per op amp
- No external capacitors required
- Fast overload recovery time of 50 μs
Applications
- Temperature sensors
- Pressure sensors
- Precision current sensing
- Strain gage amplifiers
- Medical instrumentation
- Thermocouple amplifiers
Q & A
- What is the package type of the AD8572ARU?
The AD8572ARU comes in an 8-TSSOP package with a width of 0.173 inches (4.40 mm).
- What is the supply voltage range for the AD8572ARU?
The AD8572ARU operates on a single supply voltage ranging from 2.7 V to 5 V.
- What is the input offset voltage of the AD8572ARU?
The input offset voltage is 1 μV.
- What is the common-mode rejection ratio (CMRR) of the AD8572ARU?
The CMRR is up to 140 dB.
- What is the input bias current of the AD8572ARU?
The input bias current is 10 pA typical.
- What is the supply current per op amp for the AD8572ARU?
The supply current per op amp is 750 μA.
- Does the AD8572ARU require external capacitors?
No, the AD8572ARU does not require external capacitors.
- What is the overload recovery time of the AD8572ARU?
The overload recovery time is 50 μs.
- What are some common applications of the AD8572ARU?
Common applications include temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.
- What is the operating temperature range of the AD8572ARU?
The operating temperature range is −40°C to +125°C.
