Overview
The AD8574ARZ-REEL7, produced by Analog Devices Inc., is a zero-drift, single-supply, rail-to-rail input and output (RRIO) quad operational amplifier. This component is part of the AD8571/AD8572/AD8574 family, which offers ultralow offset, drift, and bias current, making it ideal for high-precision applications. The AD8574ARZ-REEL7 operates from a single supply voltage ranging from 2.7 V to 5 V and does not require external capacitors. It utilizes a spread-spectrum, auto-zero technique to eliminate intermodulation effects and ensure high accuracy and low distortion.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Bias Current | IB | -40°C ≤ TA ≤ +125°C | 10 | - | 50 | pA |
| Supply Current per Amplifier | ISY | VO = 0 V, -40°C ≤ TA ≤ +125°C | 850 | - | 1075 | μA |
| Input Voltage Range | - | - | 0 | - | 5 | V |
| Common-Mode Rejection Ratio (CMRR) | CMRR | VCM = 0 V to 5 V, -40°C ≤ TA ≤ +125°C | 115 | - | 130 | dB |
| Large Signal Voltage Gain (AVO) | AVO | RL = 10 kΩ, VO = 0.3 V to 4.7 V, -40°C ≤ TA ≤ +125°C | 120 | - | 135 | dB |
| Offset Voltage Drift (∆VOS/∆T) | ∆VOS/∆T | -40°C ≤ TA ≤ +125°C | 0.005 | - | 0.04 | μV/°C |
| Output Voltage High (VOH) | VOH | RL = 100 kΩ to GND, -40°C to +125°C | 4.99 | - | 4.998 | V |
| Output Voltage Low (VOL) | VOL | RL = 100 kΩ to V+, -40°C to +125°C | 1 | - | 10 | mV |
| Short-Circuit Limit (ISC) | ISC | -40°C to +125°C | ±25 | - | ±50 | mA |
| Slew Rate (SR) | SR | RL = 10 kΩ | 0.4 | - | - | V/μs |
| Overload Recovery Time | - | - | 0.05 | - | 0.3 | ms |
| Gain Bandwidth Product (GBP) | GBP | - | 1.5 | - | - | MHz |
Key Features
- Ultralow Offset and Drift: The AD8574ARZ-REEL7 features an extremely low offset voltage of 1 µV and a temperature drift of 5 nV/°C, ensuring high precision over a wide temperature range.
- Low Input Bias Current: With a typical input bias current of 10 pA, this amplifier is suitable for applications requiring low input current.
- Single-Supply Operation: The amplifier operates from a single supply voltage ranging from 2.7 V to 5 V.
- Rail-to-Rail Input and Output: The input and output stages are rail-to-rail, allowing the input common-mode voltage range to reach both supply rails.
- No External Capacitors Required: The AD8574ARZ-REEL7 does not require external capacitors for operation.
- Low Supply Current: Each amplifier consumes a low supply current of 750 μA.
- High Common-Mode Rejection Ratio (CMRR): The CMRR is typically 120 dB to 130 dB, ensuring good rejection of common-mode signals.
- Fast Overload Recovery Time: The amplifier has a fast overload recovery time of 50 μs.
Applications
- Temperature Sensors: Ideal for precision temperature measurement applications.
- Pressure Sensors: Suitable for high-precision pressure sensing.
- Precision Current Sensing: Used in applications requiring accurate current measurement.
- Strain Gage Amplifiers: Applicable in strain gage measurement systems.
- Medical Instrumentation: Used in medical devices requiring high precision and low noise.
- Thermocouple Amplifiers: Suitable for thermocouple-based temperature measurement systems.
- Automotive Applications: Can be used in various automotive sensing and measurement applications.
Q & A
- What is the typical input bias current of the AD8574ARZ-REEL7?
The typical input bias current is 10 pA.
- What is the operating voltage range for the AD8574ARZ-REEL7?
The AD8574ARZ-REEL7 operates from a single supply voltage ranging from 2.7 V to 5 V.
- Does the AD8574ARZ-REEL7 require external capacitors?
No, the AD8574ARZ-REEL7 does not require external capacitors for operation.
- What is the common-mode rejection ratio (CMRR) of the AD8574ARZ-REEL7?
The CMRR is typically 120 dB to 130 dB.
- What is the slew rate of the AD8574ARZ-REEL7?
The slew rate is 0.4 V/μs.
- What is the gain bandwidth product (GBP) of the AD8574ARZ-REEL7?
The GBP is 1.5 MHz.
- What are some typical applications of the AD8574ARZ-REEL7?
Typical applications include temperature sensors, pressure sensors, precision current sensing, strain gage amplifiers, medical instrumentation, and thermocouple amplifiers.
- What is the temperature range for the AD8574ARZ-REEL7?
The AD8574ARZ-REEL7 is guaranteed to operate over a temperature range of -40°C to +125°C.
- How many amplifiers are included in the AD8574ARZ-REEL7 package?
The AD8574ARZ-REEL7 is a quad operational amplifier.
- What is the output voltage high (VOH) of the AD8574ARZ-REEL7?
The output voltage high (VOH) is typically 4.99 V to 4.998 V with a 100 kΩ load to ground.
