Overview
The AD627AR-REEL, 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, with a maximum supply current of 85 μA, making it ideal for battery-powered and industrial applications. The AD627 offers superior flexibility by allowing the user to set the gain with a single external resistor, and it conforms to the 8-lead industry-standard pinout configuration. Without an external resistor, the gain is set to 5, but it can be adjusted up to a gain of 1000 with the appropriate resistor.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Range | 5 | - | 1000 | V/V |
| Gain Error (G = +5) | 0.01 | 0.03 | 0.10 | % |
| Input Offset Voltage | 25 | 50 | 150 | μV |
| Input Bias Current | - | 2 | - | nA |
| Common-Mode Rejection Ratio (CMRR) at G = +5 | 77 | - | - | dB (AD627A), 83 dB (AD627B) |
| Bandwidth (G = +5) | - | 80 | - | kHz |
| Slew Rate | - | 0.05/−0.07 | - | V/μs |
| Settling Time to 0.01% (G = +5, 5 V step) | - | 85 | - | μs |
| Supply Current | 60 | - | 85 | μA |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | - | 8-SOIC |
Key Features
- Micropower Operation: Maximum supply current of 85 μA, making it suitable for battery-powered applications.
- Wide Power Supply Range: Operates on single and dual supplies from +2.2 V to ±18 V.
- Gain Flexibility: Gain can be set from 5 to 1000 using a single external resistor.
- Rail-to-Rail Output Swing: Maximizes dynamic range when operating from low supply voltages.
- High Accuracy DC Performance: Low gain error, offset voltage, and offset drift.
- Excellent AC Specifications: High CMRR and bandwidth, with low noise characteristics.
- Compact Package: Available in 8-SOIC surface mount package.
Applications
- Medical Instrumentation: ECG, EEG, and other low-power medical devices.
- Industrial Process Control: 4 mA to 20 mA loop-powered systems and general industrial automation.
- Transducer Interfacing: Thermocouple amplifiers and other sensor interfaces.
- Portable Battery-Powered Instruments: Ideal for devices requiring low power consumption and high precision.
- Factory Automation: General-purpose instrumentation and control systems.
Q & A
- What is the maximum supply current of the AD627?
The maximum supply current of the AD627 is 85 μA.
- What is the gain range of the AD627?
The gain range of the AD627 can be set from 5 to 1000 using a single external resistor.
- What is the input offset voltage of the AD627?
The input offset voltage of the AD627 is typically 50 μV, with a maximum of 150 μV.
- What is the common-mode rejection ratio (CMRR) of the AD627?
The CMRR of the AD627 is at least 77 dB for the AD627A and 83 dB for the AD627B at a gain of +5.
- What is the bandwidth of the AD627 at a gain of +5?
The bandwidth of the AD627 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 of the AD627 to 0.01% at a gain of +5 and a 5 V step is 85 μs.
- What are the typical applications of the AD627?
The AD627 is typically used in medical instrumentation, industrial process control, transducer interfacing, portable battery-powered instruments, and factory automation.
- What package types are available for the AD627?
The AD627 is available in 8-SOIC and 8-PDIP packages.
- What is the operating temperature range of the AD627?
The operating temperature range of the AD627 is from -40°C to 85°C.
- Is the AD627 RoHS compliant?
Yes, the AD627 is lead-free and RoHS compliant.
