Overview
The AD8557ARZ-REEL, produced by Analog Devices Inc., is part of the AD855x family of operational amplifiers known for their ultralow offset, drift, and bias current. This specific model is a single operational amplifier that features rail-to-rail input and output swings, making it highly versatile for various precision applications. The AD8557ARZ-REEL operates from a single supply of 2.7 V to 5 V, combining low cost with high accuracy, similar to more expensive auto-zeroing or chopper-stabilized amplifiers.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value |
|---|---|---|---|
| Input Offset Voltage | 1 μV | - | - |
| Input Offset Drift | 0.005 μV/°C | - | 0.04 μV/°C |
| Input Bias Current | 10 pA | 20 pA | 70 pA |
| Supply Current per Op Amp | 700 μA | - | - |
| Common-Mode Rejection Ratio (CMRR) | 130 dB | 115 dB | 140 dB |
| Power Supply Rejection Ratio (PSRR) | 130 dB | - | - |
| Large Signal Voltage Gain | 125 dB | 110 dB | 145 dB |
| Output Voltage High (VOH) @ RL = 100 kΩ | 4.99 V | 4.985 V | 4.998 V |
| Operating Temperature Range | -40°C to +125°C | - | - |
Key Features
- Ultralow input offset voltage: 1 μV
- Low input offset drift: 0.005 μV/°C
- Rail-to-rail input and output swings
- Single-supply operation from 2.7 V to 5 V
- High gain, CMRR, and PSRR: up to 145 dB, 140 dB, and 130 dB respectively
- Ultralow input bias current: 10 pA typical
- Low supply current: 700 μA per op amp
- Fast overload recovery time: 50 μs
- No external capacitors required
Applications
- Temperature sensors
- Pressure sensors
- Precision current sensing
- Strain gage amplifiers
- Medical instrumentation
- Thermocouple amplifiers
Q & A
- What is the typical input offset voltage of the AD8557ARZ-REEL?
The typical input offset voltage is 1 μV. - What is the input offset drift of the AD8557ARZ-REEL?
The input offset drift is 0.005 μV/°C. - What is the operating voltage range for the AD8557ARZ-REEL?
The AD8557ARZ-REEL operates from a single supply of 2.7 V to 5 V. - What are the key features of the AD8557ARZ-REEL?
Key features include ultralow input offset voltage, low input offset drift, rail-to-rail input and output swings, high gain, CMRR, and PSRR, and low supply current. - What are the typical applications for the AD8557ARZ-REEL?
Typical applications include temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers. - Does the AD8557ARZ-REEL require external capacitors?
No, the AD8557ARZ-REEL does not require external capacitors. - What is the typical supply current per op amp for the AD8557ARZ-REEL?
The typical supply current per op amp is 700 μA. - What is the common-mode rejection ratio (CMRR) of the AD8557ARZ-REEL?
The CMRR is typically 130 dB. - What is the power supply rejection ratio (PSRR) of the AD8557ARZ-REEL?
The PSRR is typically 130 dB. - What is the overload recovery time of the AD8557ARZ-REEL?
The overload recovery time is 50 μs.
