Overview
The ADA4638-1ARZ-R7 is a high-performance, zero-drift precision operational amplifier produced by Analog Devices Inc. This amplifier is designed for applications requiring high precision and stability over a wide temperature range. It operates from a single supply of 4.5 V to 30 V or dual supplies of ±2.25 V to ±15 V, making it versatile for various precision instrumentation and signal conditioning tasks.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 4.5 | - | 30 | V (Single Supply) |
| Supply Voltage | ±2.25 | - | ±15 | V (Dual Supply) |
| Input Offset Voltage | - | - | 4 | μV |
| Input Offset Voltage Drift | - | - | 0.05 | μV/°C |
| Gain | 130 | - | - | dB |
| Power Supply Rejection Ratio (PSRR) | 120 | - | - | dB |
| Common Mode Rejection Ratio (CMRR) | 130 | - | - | dB |
| Supply Current per Amplifier | - | < 0.95 | - | mA (@ ±5 V) |
| Operating Temperature Range | -40 | - | 125 | °C |
Key Features
- Zero-drift operation with an input offset voltage of 4 μV maximum and drift of 0.05 μV/°C maximum.
- Rail-to-rail output swing to maximize signal-to-noise ratio (SNR).
- Low input voltage noise of 1.2 μV p-p (0.1 Hz to 10 Hz) with no 1/f noise.
- High gain of 130 dB minimum and high PSRR and CMRR of 120 dB and 130 dB respectively.
- Low power consumption with supply current less than 0.95 mA per amplifier at ±5 V.
- Wide operating temperature range from -40°C to 125°C.
- Available in 8-lead LFCSP (3 mm × 3 mm) and SOIC packages.
Applications
- Medical equipment: Ideal for precision amplification in medical devices due to its low noise and drift characteristics.
- Pressure sensors: Benefits from the nearly zero drift over the wide operating temperature range.
- Strain gage amplifiers: High precision and stability make it suitable for strain gage applications.
- Industrial control systems: Used in various industrial control and measurement systems requiring high precision.
- Data acquisition systems: Suitable for data acquisition due to its high accuracy and stability.
Q & A
- What is the input offset voltage of the ADA4638-1ARZ-R7?
The input offset voltage is 4 μV maximum.
- What is the operating temperature range of the ADA4638-1ARZ-R7?
The operating temperature range is from -40°C to 125°C.
- What are the supply voltage options for the ADA4638-1ARZ-R7?
The amplifier can operate from a single supply of 4.5 V to 30 V or dual supplies of ±2.25 V to ±15 V.
- What is the typical supply current per amplifier at ±5 V?
The typical supply current per amplifier is less than 0.95 mA at ±5 V.
- Does the ADA4638-1ARZ-R7 have rail-to-rail output swing?
Yes, it features rail-to-rail output swing to maximize the signal-to-noise ratio (SNR).
- What are the package options for the ADA4638-1ARZ-R7?
The amplifier is available in 8-lead LFCSP (3 mm × 3 mm) and SOIC packages.
- What is the input voltage noise of the ADA4638-1ARZ-R7?
The input voltage noise is 1.2 μV p-p (0.1 Hz to 10 Hz) with no 1/f noise.
- Is the ADA4638-1ARZ-R7 suitable for medical equipment?
Yes, it is ideal for medical equipment due to its low noise and drift characteristics.
- What is the gain of the ADA4638-1ARZ-R7?
The gain is 130 dB minimum.
- Does the ADA4638-1ARZ-R7 have high PSRR and CMRR?
Yes, it has high PSRR and CMRR of 120 dB and 130 dB respectively.
