Overview
The AD621BR-REEL7 from Analog Devices Inc. is a low drift, low power instrumentation amplifier designed for high accuracy and reliability in various applications. This amplifier is preset to a gain of 10 but can be easily configured to a gain of 100 using a single external jumper. It features a wide power supply range of ±2.3 V to ±18 V and is available in an 8-lead SOIC package, making it suitable for surface mount applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain | 10 / 100 | - | - | - |
| Gain Error (VOUT = ±10 V) | 0.15 | 0.05 | 0.15 | % |
| Nonlinearity (VOUT = –10 V to +10 V, RL = 2 kΩ) | 2 | 10 | 2 | ppm of FS |
| Gain vs. Temperature | -1.5 | ±5 | -1.5 | ppm/°C |
| Input Offset Voltage (RTI) | 50 | 125 | 250 | µV |
| Input Offset Drift | 0.6 | 1.5 | 2.5 | µV/°C |
| Supply Voltage | ±2.3 | - | ±18 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| -3 dB Bandwidth (G = 10) | - | 800 | - | kHz |
| Slew Rate | - | 1.2 | - | V/μs |
| Input Bias Current | - | 500 | - | pA |
| Supply Current | - | 900 | - | µA |
Key Features
- Low drift and low power consumption, making it suitable for battery-powered and portable applications.
- Preset gain of 10, with the option to set a gain of 100 using a single external jumper.
- Wide power supply range of ±2.3 V to ±18 V.
- High accuracy with low input offset voltage (50 µV max) and low input offset drift (0.6 µV/°C max).
- Low noise performance with 9 nV/√Hz input voltage noise at 1 kHz.
- High common-mode rejection ratio (100 dB min at G = 10).
- Compact 8-lead SOIC package, suitable for surface mount applications.
- Lead-free and RoHS compliant.
Applications
- Weigh scales and industrial process controls.
- ECG and medical instrumentation.
- Transducer interfaces and data acquisition systems.
- Battery-powered and portable equipment.
Q & A
- What is the default gain setting of the AD621BR-REEL7?
The default gain setting is 10, but it can be easily changed to 100 using a single external jumper.
- What is the operating temperature range of the AD621BR-REEL7?
The operating temperature range is -40°C to +85°C.
- What is the input offset voltage of the AD621BR-REEL7?
The input offset voltage is 50 µV max.
- What is the common-mode rejection ratio (CMRR) of the AD621BR-REEL7?
The CMRR is 100 dB min at a gain of 10.
- What is the -3 dB bandwidth of the AD621BR-REEL7 at a gain of 10?
The -3 dB bandwidth is 800 kHz at a gain of 10.
- What is the slew rate of the AD621BR-REEL7?
The slew rate is 1.2 V/μs.
- Is the AD621BR-REEL7 lead-free and RoHS compliant?
- What is the input bias current of the AD621BR-REEL7?
The input bias current is 500 pA.
- What is the supply current of the AD621BR-REEL7?
The supply current is 900 µA.
- In what package is the AD621BR-REEL7 available?
The AD621BR-REEL7 is available in an 8-lead SOIC package.
