Overview
The AD627AR-REEL7 is an integrated, micropower instrumentation amplifier produced by Analog Devices Inc. This component is designed to deliver high performance with low power consumption, making it suitable for a wide range of applications. The AD627AR-REEL7 operates on single and dual power supplies, ranging from +2.2 V to ±18 V, and features a rail-to-rail output swing. It is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) and is available on a 7-inch reel.
Key Specifications
| Parameter | Typical Value | Units |
|---|---|---|
| Supply Current | 85 μA | mA |
| Power Supply Range | +2.2 V to ±18 V | V |
| Gain Range | 5 to 1000 | V/V |
| Input Offset Voltage | 125 μV (AD627B), 200 μV (AD627A) | μV |
| Input Offset Voltage Drift | 1 μV/°C (AD627B), 3 μV/°C (AD627A) | μV/°C |
| Common Mode Rejection Ratio (CMRR) | 77 dB (AD627A), 83 dB (AD627B) | dB |
| Bandwidth | 80 kHz (G = 5) | kHz |
| Slew Rate | +0.05/–0.07 V/μs | V/μs |
| Settling Time to 0.01% | 65 ms (G = 5, V_S = 3 V, 1.5 V output step) | ms |
| Noise | 38 nV/√Hz RTI noise @ 1 kHz | nV/√Hz |
Key Features
- Micropower, 85 μA maximum supply current
- Wide power supply range (+2.2 V to ±18 V)
- Easy to use gain set with one external resistor; gain range from 5 (no resistor) to 1000
- Higher performance than discrete designs
- Rail-to-rail output swing
- High accuracy DC performance: 0.03% typical gain accuracy (G = 5), 125 μV maximum input offset voltage (AD627B), and 1 μV/°C maximum input offset voltage drift (AD627B)
- Excellent AC specifications: 77 dB minimum CMRR (G = 5), 80 kHz bandwidth (G = 5), and 135 μs settling time to 0.01% (G = 5, 5 V step)
Applications
- 4 mA to 20 mA loop-powered applications
- Low power medical instrumentation—ECG, EEG
- Transducer interfacing
- Thermocouple amplifiers
- Industrial process controls
- Low power data acquisition
- Portable battery-powered instruments
Q & A
- What is the maximum supply current of the AD627AR-REEL7?
The maximum supply current is 85 μA.
- What is the power supply range for the AD627AR-REEL7?
The power supply range is from +2.2 V to ±18 V.
- How is the gain set for the AD627AR-REEL7?
The gain is set using one external resistor, with a gain range from 5 (no resistor) to 1000.
- What is the common mode rejection ratio (CMRR) of the AD627AR-REEL7?
The CMRR is 77 dB (AD627A) and 83 dB (AD627B) at a gain of 5.
- What is the bandwidth of the AD627AR-REEL7 at a gain of 5?
The bandwidth is 80 kHz at a gain of 5.
- What are the typical applications of the AD627AR-REEL7?
Typical applications include 4 mA to 20 mA loop-powered systems, low power medical instrumentation, transducer interfacing, thermocouple amplifiers, industrial process controls, low power data acquisition, and portable battery-powered instruments.
- What is the input offset voltage of the AD627AR-REEL7?
The input offset voltage is 125 μV (AD627B) and 200 μV (AD627A).
- What is the slew rate of the AD627AR-REEL7?
The slew rate is +0.05/–0.07 V/μs.
- How long does it take for the AD627AR-REEL7 to settle to 0.01% at a gain of 5?
The settling time to 0.01% is 65 ms at a gain of 5 with a 3 V supply and 1.5 V output step.
- What is the noise performance of the AD627AR-REEL7?
The noise performance includes 38 nV/√Hz RTI noise at 1 kHz.
