Overview
The AD627ARZ-R7 from Analog Devices Inc. is an integrated, micropower instrumentation amplifier designed to offer superior performance and flexibility. It operates on a wide supply voltage range of +2.2 V to ±18 V and consumes a maximum of 85 μA, making it ideal for battery-powered and low-power applications. The device features a rail-to-rail output swing and can be configured for gains from 5 to 1000 using a single external resistor. This amplifier is known for its high accuracy, low noise, and excellent common-mode rejection ratio (CMRR), making it suitable for a variety of applications including medical instrumentation, industrial process controls, and data acquisition systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Range | 5 | - | 1000 | V/V |
| Gain Error (G = +5) | 0.01 | 0.10 | 0.25 | % |
| Nonlinearity (G = +5) | 10 | - | 100 | ppm |
| Input Offset Voltage | 25 | - | 250 | μV |
| Input Bias Current | - | 2 | - | nA |
| Voltage Noise (RTI) | - | 38 | - | nV/√Hz |
| CMRR (G = +5) | - | 90 | - | dB |
| Bandwidth (G = +5) | - | 80 | - | kHz |
| Slew Rate | - | 0.05/−0.07 | - | V/μs |
| Settling Time to 0.01% (G = +5) | - | 65 | - | μs |
| Supply Voltage Range | +2.2 | - | ±18 | V |
| Quiescent Current | - | 85 | - | μA |
| Operating Temperature Range | -40 | - | +85 | °C |
| Package | - | SOIC-8 | - | - |
Key Features
- Flexible Gain Setting: The gain can be set from 5 to 1000 using a single external resistor.
- Low Power Consumption: Maximum quiescent current of 85 μA, making it suitable for battery-powered applications.
- Rail-to-Rail Output Swing: Maximizes dynamic range when operating from low supply voltages.
- High Accuracy: Low voltage offset, offset drift, gain error, and gain drift minimize system errors.
- Excellent CMRR: High common-mode rejection ratio up to 200 Hz, rejecting line noise and harmonics.
- Wide Supply Voltage Range: Operates from +2.2 V to ±18 V.
- Low Noise: Voltage noise of 38 nV/√Hz and current noise of 50 fA/√Hz.
- Compact Package: Available in an 8-lead SOIC package.
Applications
- Medical Instrumentation: ECG, EEG, and other low-power medical devices.
- Industrial Process Controls: 4 mA to 20 mA loop-powered systems and other industrial applications.
- Data Acquisition Systems: Low-power data acquisition and portable battery-powered instruments.
- Transducer Interfacing: Thermocouple amplifiers and other transducer interfaces.
- Portable Battery-Powered Instruments: Ideal for devices requiring low power consumption and high performance.
Q & A
- What is the gain range of the AD627ARZ-R7?
The gain range of the AD627ARZ-R7 is from 5 to 1000, set using a single external resistor.
- What is the maximum quiescent current of the AD627ARZ-R7?
The maximum quiescent current is 85 μA.
- What is the supply voltage range for the AD627ARZ-R7?
The supply voltage range is from +2.2 V to ±18 V.
- What is the typical CMRR of the AD627ARZ-R7 at a gain of +5?
The typical CMRR at a gain of +5 is 90 dB.
- What is the bandwidth of the AD627ARZ-R7 at a gain of +5?
The bandwidth at a gain of +5 is 80 kHz.
- What is the input offset voltage of the AD627ARZ-R7?
The typical input offset voltage is 25 μV.
- What is the operating temperature range of the AD627ARZ-R7?
The operating temperature range is from -40°C to +85°C.
- In what package is the AD627ARZ-R7 available?
The AD627ARZ-R7 is available in an 8-lead SOIC package.
- What are some common applications of the AD627ARZ-R7?
Common applications include medical instrumentation, industrial process controls, data acquisition systems, and portable battery-powered instruments.
- How does the AD627ARZ-R7 minimize system errors?
The AD627ARZ-R7 minimizes system errors through low voltage offset, offset drift, gain error, and gain drift, as well as excellent CMRR over frequency.
