Overview
The AD627ARZ, produced by Analog Devices Inc., is an integrated, micropower instrumentation amplifier designed to deliver high performance with low power consumption. It operates on a wide supply voltage range from +2.2 V to ±18 V, making it versatile for various applications. The AD627ARZ is known for its rail-to-rail output swing, which maximizes dynamic range even at low supply voltages. This amplifier is particularly suitable for battery-powered and industrial applications due to its low power consumption and high accuracy dc performance.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Current | - | - | 85 | - | μA |
| Supply Voltage Range | - | +2.2 V to ±18 V | - | - | V |
| Gain Range | - | 5 | - | 1000 | V/V |
| Gain Error (G = +5) | VOUT = (−VS) + 0.1 to (+VS) − 0.15 | 0.01 | 0.06 | 0.10 | % |
| Input Offset Voltage (Dual Supply) | - | 25 | 125 | 250 | μV |
| CMRR (G = +5) | - | 77 | - | - | dB |
| 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 |
Key Features
- Micropower operation with a maximum supply current of 85 μA.
- Wide power supply range from +2.2 V to ±18 V.
- Easy to use with gain set by a single external resistor; gain range from 5 to 1000.
- Rail-to-rail output swing for maximum dynamic range.
- High accuracy dc performance with low voltage offset, offset drift, gain error, and gain drift.
- Excellent ac specifications, including high CMRR and low noise.
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 AD627ARZ?
The AD627ARZ has a maximum supply current of 85 μA. - What is the range of the supply voltage for the AD627ARZ?
The supply voltage range for the AD627ARZ is from +2.2 V to ±18 V. - How is the gain of the AD627ARZ set?
The gain of the AD627ARZ is set using a single external resistor, allowing a gain range from 5 to 1000. - What is the typical gain error for the AD627ARZ at a gain of +5?
The typical gain error for the AD627ARZ at a gain of +5 is 0.06%. - What is the CMRR of the AD627ARZ at a gain of +5?
The CMRR of the AD627ARZ at a gain of +5 is a minimum of 77 dB. - What is the bandwidth of the AD627ARZ at a gain of +5?
The bandwidth of the AD627ARZ at a gain of +5 is 80 kHz. - What is the settling time to 0.01% for the AD627ARZ at a gain of +5 and a 5 V step?
The settling time to 0.01% for the AD627ARZ at a gain of +5 and a 5 V step is 85 μs. - What are some common applications of the AD627ARZ?
Common 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. - Why is the AD627ARZ suitable for battery-powered applications?
The AD627ARZ is suitable for battery-powered applications due to its low power consumption, single-supply operation, and rail-to-rail output swing. - How does the AD627ARZ compare to discrete designs?
The AD627ARZ provides superior performance, uses less circuit board area, and costs less than micropower discrete designs.
