Overview
The AD627BNZ, 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 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 AD627BNZ offers high accuracy and excellent ac and dc specifications, minimizing errors in the system through low voltage offset, offset drift, gain error, and gain drift.
Key Specifications
| Parameter | Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Supply Voltage | +2.2 V to ±18 V | V | |||
| Gain Range | 5 to 1000 | V/V | |||
| Gain Error (G = +5) | 0.01% | 0.06% | 0.10% | % | |
| Input Offset Voltage (VOSI) | 25 μV | 125 μV | 150 μV | μV | |
| Input Offset Voltage Drift | 1 μV/°C | 3 μV/°C | μV/°C | ||
| Common-Mode Rejection Ratio (CMRR) (G = +5) | 83 dB | dB | |||
| Bandwidth (G = +5) | 80 kHz | kHz | |||
| Slew Rate | 0.05 V/μs | 0.07 V/μs | V/μs | ||
| Settling Time to 0.01% (G = +5, 5 V step) | 85 μs | μs | |||
| Operating Temperature Range | −40°C to +85°C | °C |
Key Features
- Micropower operation with a maximum supply current of 85 μA.
- Wide power supply range: +2.2 V to ±18 V.
- Rail-to-rail output swing for maximum dynamic range.
- Easy to use with gain set by a single external resistor; gain range from 5 to 1000.
- High accuracy dc performance with low voltage offset and drift.
- Excellent ac specifications including 80 kHz bandwidth and 135 μs settling time to 0.01%.
- High common-mode rejection ratio (CMRR) of 83 dB at G = +5.
- Low noise: 38 nV/√Hz RTI noise at 1 kHz.
- Compact 8-lead PDIP and SOIC packaging.
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 systems.
- Battery-powered and portable equipment.
Q & A
- What is the supply voltage range of the AD627BNZ?
The AD627BNZ operates on a supply voltage range of +2.2 V to ±18 V.
- What is the maximum supply current of the AD627BNZ?
The maximum supply current is 85 μA.
- How is the gain of the AD627BNZ set?
The gain is set using a single external resistor and can range from 5 to 1000.
- What is the common-mode rejection ratio (CMRR) of the AD627BNZ at G = +5?
The CMRR is 83 dB at G = +5.
- What is the bandwidth of the AD627BNZ at G = +5?
The bandwidth is 80 kHz at G = +5.
- What is the settling time to 0.01% for the AD627BNZ at G = +5 with a 5 V step?
The settling time is 85 μs.
- What are the typical applications of the AD627BNZ?
Typical applications include 4 mA to 20 mA loop-powered systems, low power medical instrumentation, transducer interfacing, thermocouple amplifiers, industrial process controls, and battery-powered equipment.
- What is the operating temperature range of the AD627BNZ?
The operating temperature range is −40°C to +85°C.
- What is the input offset voltage of the AD627BNZ?
The maximum input offset voltage is 125 μV for the AD627B model.
- What is the noise performance of the AD627BNZ?
The AD627BNZ has a noise performance of 38 nV/√Hz RTI noise at 1 kHz.
