Overview
The AD627BR-REEL7, produced by Analog Devices Inc., is an integrated, micropower instrumentation amplifier. It is designed to deliver rail-to-rail output swing on both single and dual power supplies, ranging from +2.2 V to ±18 V. This amplifier is notable for its low power consumption, high accuracy, and ease of use, making it suitable for a wide range of applications, including medical instrumentation, industrial process controls, and portable battery-powered instruments.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Gain Range | G = +5 + (200 kΩ/RG) | 5 | 1000 | 1000 | V/V |
| Gain Error (G = +5) | VOUT = (−VS) + 0.1 to (+VS) − 0.15 | 0.01 | 0.06 | 0.10 | % |
| Input Offset Voltage (AD627B) | 25 | 125 | 150 | µV | |
| Bandwidth (G = +5) | 80 | 80 | kHz | ||
| Slew Rate | +0.05/-0.07 | +0.05/-0.07 | V/µs | ||
| Settling Time to 0.01% (G = +5, 5 V step) | 65 | 85 | µs | ||
| Quiescent Current | 60 | 85 | µA | ||
| Operating Temperature Range | -40 | 85 | °C | ||
| Power Supply Range | +2.2 V to ±18 V | V |
Key Features
- Micropower operation with a maximum supply current of 85 µA
- Wide power supply range: +2.2 V to 36 V or dual supply from ±1.1 V to ±18 V
- Rail-to-rail output swing for maximum dynamic range
- Easy gain setting with a single external resistor (RG)
- High accuracy DC performance: 0.10% gain accuracy and 10 ppm gain drift (G = +5)
- Low input offset voltage and drift: 25 µV to 150 µV and 1 mV/°C to 3 mV/°C respectively
- Low noise: 38 nV/√Hz input voltage noise and 177 nV/√Hz output voltage noise
- High common-mode rejection ratio (CMRR): 77 dB to 83 dB (G = +5)
- Lead-free and RoHS compliant
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 power supply range of the AD627?
The AD627 operates from a single supply of +2.2 V to 36 V or a dual supply from ±1.1 V to ±18 V.
- What is the gain range of the AD627?
The gain range of the AD627 is from 5 to 1000, set by a single external resistor (RG).
- What is the typical bandwidth of the AD627 at a gain of +5?
The typical bandwidth at a gain of +5 is 80 kHz).
- What is the settling time of the AD627 to 0.01% at a gain of +5 and a 5 V step?
The settling time to 0.01% at a gain of +5 and a 5 V step is typically 85 µs).
- What is the common-mode rejection ratio (CMRR) of the AD627 at a gain of +5?
The CMRR at a gain of +5 is a minimum of 77 dB for the AD627A and 83 dB for the AD627B).
- What are the typical input offset voltages for the AD627A and AD627B?
The typical input offset voltage for the AD627A is 200 µV and for the AD627B is 125 µV).
- What is the quiescent current of the AD627?
The quiescent current of the AD627 is typically 60 µA to 85 µA).
- Is the AD627 lead-free and RoHS compliant?
Yes, the AD627 is lead-free and RoHS compliant).
- What are some common applications of the AD627?
The AD627 is commonly used in 4 mA to 20 mA loop-powered applications, low power medical instrumentation, transducer interfacing, thermocouple amplifiers, industrial process controls, low power data acquisition, and portable battery-powered instruments).
- What is the operating temperature range of the AD627?
The operating temperature range of the AD627 is from -40°C to +85°C).
