Overview
The AD8554ARU-REEL, produced by Analog Devices Inc., is a quad operational amplifier that belongs to the AD8551/AD8552/AD8554 family. These amplifiers are known for their ultralow offset, drift, and bias current, making them ideal for high-precision applications. The AD8554 features rail-to-rail input and output swings and operates from a single supply voltage ranging from 2.7 V to 5 V. This zero-drift amplifier combines high accuracy with low cost, eliminating the need for external capacitors.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | -40°C ≤ TA ≤ +125°C | - | 1 | - | μV |
| Offset Voltage Drift | ΔVOS/ΔT | -40°C ≤ TA ≤ +125°C | 0.005 | - | 0.04 | μV/°C |
| Input Bias Current | IB | -40°C ≤ TA ≤ +125°C | 10 | - | 50 | pA |
| Input Offset Current | IOS | -40°C ≤ TA ≤ +125°C | 10 | - | 50 | pA |
| Input Voltage Range | - | - | 0 | - | 5 | V |
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 5 V, -40°C ≤ TA ≤ +125°C | 115 | - | 130 | dB |
| Large Signal Voltage Gain | AVO | RL = 10 kΩ, VO = 0.3 V to 4.7 V, -40°C ≤ TA ≤ +125°C | 120 | - | 135 | dB |
| Supply Current/Amplifier | ISY | VO = 0 V, -40°C ≤ TA ≤ +125°C | 38 | - | 75 | μA |
| Output Voltage High | VOH | RL = 100 kΩ to GND, -40°C ≤ TA ≤ +125°C | 4.99 | - | 4.998 | V |
| Output Voltage Low | VOL | RL = 100 kΩ to GND, -40°C ≤ TA ≤ +125°C | - | - | - | - |
| Overload Recovery Time | - | - | - | 50 | - | μs |
Key Features
- Ultralow Offset and Drift: The AD8554 has an offset voltage of only 1 μV and a drift of 0.005 μV/°C, ensuring high accuracy in precision applications.
- Rail-to-Rail Input and Output: The amplifier features rail-to-rail input and output swings, allowing for full utilization of the supply voltage range.
- No External Capacitors Required: The design eliminates the need for external capacitors, simplifying the circuit and reducing component count.
- Low Supply Current: Each operational amplifier in the AD8554 consumes a low supply current of 700 μA, making it suitable for power-sensitive applications.
- High Common-Mode Rejection Ratio (CMRR): The CMRR is as high as 130 dB, ensuring excellent rejection of common-mode signals.
- Fast Overload Recovery Time: The amplifier recovers quickly from overload conditions, with a recovery time of 50 μs.
Applications
- Temperature Sensors: Ideal for amplifying signals from temperature sensors due to its low offset and drift.
- Pressure Sensors: Suitable for precision current sensing and strain gage amplifiers.
- Medical Instrumentation: Used in medical devices where high accuracy and low noise are critical.
- Thermocouple Amplifiers: Excellent for thermocouple applications requiring precise signal amplification.
- Precision Current Sensing: Ideal for applications requiring accurate current measurement.
Q & A
- What is the offset voltage of the AD8554?
The offset voltage of the AD8554 is only 1 μV.
- What is the operating supply voltage range for the AD8554?
The AD8554 operates from a single supply voltage ranging from 2.7 V to 5 V.
- Does the AD8554 require external capacitors?
No, the AD8554 does not require external capacitors.
- What is the common-mode rejection ratio (CMRR) of the AD8554?
The CMRR of the AD8554 is as high as 130 dB.
- What is the supply current per amplifier in the AD8554?
The supply current per amplifier is 700 μA.
- What is the overload recovery time of the AD8554?
The overload recovery time is 50 μs.
- What are some typical applications of the AD8554?
Typical applications include temperature sensors, pressure sensors, medical instrumentation, thermocouple amplifiers, and precision current sensing.
- What is the input voltage range for the AD8554?
The input voltage range is from 0 V to 5 V.
- How many operational amplifiers are in the AD8554?
The AD8554 is a quad operational amplifier.
- What is the output voltage high for the AD8554?
The output voltage high is approximately 4.99 V with a 100 kΩ load to ground.
