Overview
The AD627BR from Analog Devices Inc. is an integrated, micropower instrumentation amplifier designed for high accuracy and low noise applications. It operates with a maximum supply current of 85 µA and offers rail-to-rail output swing on both single and dual supplies, ranging from +2.2 V to ±18 V. The device is highly versatile, allowing the gain to be set with a single external resistor, and it is configured for a gain of 5 without any external resistor. The AD627BR is ideal for various applications due to its low power consumption, high common-mode rejection ratio (CMRR), and excellent AC and DC specifications.
Key Specifications
| Parameter | Value |
|---|---|
| Amplifier Type | Instrumentation |
| Number of Circuits | 1 |
| Output Type | Rail-to-Rail |
| Slew Rate | 0.06 V/µs |
| 3 dB Bandwidth | 80 kHz |
| Input Bias Current | 2 nA (typical), 3 nA (max) |
| Input Offset Voltage | 25 µV to 50 µV |
| Supply Current | 85 µA |
| Supply Voltage Range | +2.2 V to +36 V, ±18 V |
| Operating Temperature | -40°C to +85°C |
| Mounting Type | Surface Mount |
| Package/Case | 8-SOIC |
Key Features
- Micropower current consumption: 85 µA maximum.
- Rail-to-rail output swing on single and dual supplies.
- Gain settable with a single external resistor, with a gain range of 5 to 1000.
- High common-mode rejection ratio (CMRR): up to 83 dB.
- Low input offset voltage and drift.
- Low noise and distortion.
- Wide supply voltage range: +2.2 V to ±18 V.
- Single-supply and dual-supply operation.
Applications
- 4 mA to 20 mA loop-powered systems.
- Low power medical instrumentation (e.g., ECG, EEG).
- Transducer interfacing.
- Thermocouple amplifiers.
- Industrial process controls.
- Low power data acquisition systems.
- Portable battery-powered instruments.
Q & A
- What is the maximum supply current of the AD627BR?
The maximum supply current of the AD627BR is 85 µA.
- What is the gain range of the AD627BR?
The gain range of the AD627BR is from 5 to 1000, settable with a single external resistor.
- What is the common-mode rejection ratio (CMRR) of the AD627BR?
The CMRR of the AD627BR is up to 83 dB.
- What is the input offset voltage of the AD627BR?
The input offset voltage of the AD627BR ranges from 25 µV to 50 µV.
- What are the operating temperature ranges for the AD627BR?
The operating temperature range for the AD627BR is -40°C to +85°C.
- What types of supplies can the AD627BR operate on?
The AD627BR can operate on both single and dual supplies, ranging from +2.2 V to ±18 V.
- What is the typical 3 dB bandwidth of the AD627BR?
The typical 3 dB bandwidth of the AD627BR is 80 kHz.
- What are some common applications of the AD627BR?
Common applications include 4 mA to 20 mA loop-powered systems, medical instrumentation, transducer interfacing, thermocouple amplifiers, industrial process controls, and low power data acquisition systems.
- What is the package type of the AD627BR?
The AD627BR comes in an 8-SOIC package.
- Is the AD627BR suitable for battery-powered applications?
Yes, the AD627BR is suitable for battery-powered applications due to its low power consumption and rail-to-rail output swing.
