Overview
The AD623AR-REEL7, produced by Analog Devices Inc., is an integrated, single- or dual-supply instrumentation amplifier. It is designed to deliver rail-to-rail output swing using supply voltages from 2.7 V to 12 V. This amplifier offers high accuracy and flexibility, making it suitable for a wide range of applications. The AD623 is known for its ease of use, low power consumption, and high common-mode rejection ratio (CMRR), which is crucial for rejecting line noise and harmonics up to 200 Hz.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | - | - | 12 | V |
| Quiescent Current (Dual Supply) | 375 | 550 | 625 | µA |
| Quiescent Current (Single Supply) | 305 | 480 | 625 | µA |
| Gain Range | 1 | - | 1000 | - |
| Gain Error (G = 1) | - | 0.10% | - | - |
| Gain Error (G > 1) | - | 0.35% | - | - |
| Noise (RTI at 1 kHz) | - | 35 nV/√Hz | - | - |
| Bandwidth (G = 1) | - | 800 kHz | - | - |
| Settling Time to 0.01% (G = 10) | - | 20 µs | - | - |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Easy to use with single gain set resistor programming.
- Rail-to-rail output swing using supply voltages from 2.7 V to 12 V.
- Low power consumption with a maximum quiescent current of 550 µA.
- High accuracy dc performance with 0.10% gain error at G = 1 and 0.35% gain error at G > 1.
- Optimal dynamic specifications including 800 kHz bandwidth at G = 1 and 20 µs settling time to 0.01% at G = 10.
- High common-mode rejection ratio (CMRR) that increases with gain, rejecting line noise and harmonics up to 200 Hz.
- Wide input common-mode range, amplifying signals with common-mode voltages as low as 150 mV below ground.
- Available in various packages including 8-Lead PDIP, MSOP, and SOIC).
Applications
- Low power medical instrumentation).
- Transducer interfaces).
- Thermocouple amplifiers).
- Industrial process controls).
- Difference amplifiers).
- Low power data acquisition systems).
Q & A
- What is the supply voltage range for the AD623?
The AD623 can operate with supply voltages from 2.7 V to 12 V, including both single and dual-supply configurations).
- How is the gain of the AD623 set?
The gain of the AD623 is set using a single external resistor, allowing for gains from 1 to 1000).
- What is the maximum quiescent current of the AD623?
The maximum quiescent current of the AD623 is 550 µA for dual supply and 480 µA for single supply).
- What is the bandwidth of the AD623 at a gain of 1?
The bandwidth of the AD623 at a gain of 1 is 800 kHz).
- What is the settling time of the AD623 to 0.01% at a gain of 10?
The settling time of the AD623 to 0.01% at a gain of 10 is 20 µs).
- What is the common-mode rejection ratio (CMRR) of the AD623?
The CMRR of the AD623 increases with gain and remains constant up to 200 Hz, providing high rejection of line noise and harmonics).
- What are the typical applications of the AD623?
The AD623 is commonly used in low power medical instrumentation, transducer interfaces, thermocouple amplifiers, industrial process controls, difference amplifiers, and low power data acquisition systems).
- What are the available packages for the AD623?
The AD623 is available in various packages including 8-Lead PDIP, MSOP, and SOIC).
- What is the operating temperature range of the AD623?
The operating temperature range of the AD623 is from -40°C to +85°C).
- How does the AD623 handle input common-mode voltages?
The AD623 can amplify signals with common-mode voltages as low as 150 mV below ground).
