Overview
The AD623ARMZ, 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 user flexibility with single gain set resistor programming and conforms to the 8-lead industry standard pinout configuration. Without an external resistor, the AD623 is configured for unity gain (G = 1), and with an external resistor, it can be programmed for gains of up to 1000. The AD623 is known for its high accuracy DC performance, low power consumption, and optimal dynamic specifications, making it suitable for a variety of applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 2.7 | - | 12 | V |
| Quiescent Current (Dual Supply) | 375 | 550 | - | µA |
| Quiescent Current (Single Supply) | 305 | 480 | - | µA |
| Gain Range | 1 | - | 1000 | - |
| Gain Error (G = 1) | - | 0.10% | - | - |
| Gain Error (G > 1) | - | 0.35% | - | - |
| Noise at 1 kHz | - | 35 nV/√Hz | - | - |
| Bandwidth (G = 1) | - | 800 kHz | - | - |
| Settling Time to 0.01% (G = 10) | - | 20 µs | - | - |
| Slew Rate | - | 0.3 V/µs | - | - |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | - | 8-Lead MSOP |
Key Features
- Easy to use with single gain set resistor programming
- Rail-to-rail output swing
- Input voltage range extends 150 mV below ground (single supply)
- Low power consumption with a maximum quiescent current of 550 µA
- High accuracy DC performance with 0.10% gain error (G = 1) and 0.35% gain error (G > 1)
- Low noise: 35 nV/√Hz RTI noise at 1 kHz
- Optimal dynamic specifications: 800 kHz bandwidth (G = 1) and 20 µs settling time to 0.01% (G = 10)
- High common-mode rejection ratio (CMRR) up to 200 Hz
- Operating temperature range from -40°C to +85°C
Applications
- Low power medical instrumentation
- Transducer interfaces
- Thermocouple amplifiers
- Industrial process controls
- Difference amplifiers
- Low power data acquisition
Q & A
- What is the supply voltage range for the AD623?
The AD623 operates on supply voltages from 2.7 V to 12 V, and it can also handle dual polarity power supplies from ±2.5 V to ±6 V.
- How is the gain set for the AD623?
The gain of the AD623 can be set using a single external resistor. Without an external resistor, it defaults to unity gain (G = 1), and with an external resistor, it can be programmed for gains up to 1000.
- What is the quiescent current of the AD623?
The 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 unity gain?
The bandwidth of the AD623 at unity gain (G = 1) is 800 kHz.
- What is the settling time of the AD623?
The settling time to 0.01% for the AD623 at a gain of 10 is 20 µs.
- What is the noise performance of the AD623?
The AD623 has a noise level of 35 nV/√Hz at 1 kHz.
- What are the common applications of the AD623?
The AD623 is widely used in low power medical instrumentation, transducer interfaces, thermocouple amplifiers, industrial process controls, difference amplifiers, and low power data acquisition.
- What is the operating temperature range of the AD623?
The operating temperature range of the AD623 is from -40°C to +85°C.
- What package types are available for the AD623?
The AD623 is available in various packages including 8-Lead PDIP, 8-Lead MSOP, and 8-Lead SOIC.
- Does the AD623 support rail-to-rail output swing?
Yes, the AD623 delivers rail-to-rail output swing using the specified supply voltages.
