Overview
The AD8429ARZ-R7, produced by Analog Devices Inc., is an ultralow noise, instrumentation amplifier designed to measure extremely small signals over a wide temperature range of −40°C to +125°C. This device excels in applications requiring high signal integrity and minimal distortion, making it ideal for measuring tiny signals with ultralow input noise performance of 1 nV/√Hz and output noise of 45 nV/√Hz. The AD8429ARZ-R7 features high common-mode rejection ratio (CMRR), excellent ac specifications, and a versatile power supply range, making it suitable for various demanding applications.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Input Noise | 1 | nV/√Hz |
| Output Noise | 45 | nV/√Hz |
| CMRR (G = 1) | 90 | dB |
| Input Offset Voltage | 50 | μV |
| Gain Accuracy (G = 1) | 0.02% | |
| Bandwidth (G = 1) | 15 | MHz |
| Bandwidth (G = 100) | 1.2 | MHz |
| Slew Rate | 22 | V/μs |
| THD (1 kHz, G = 1) | −130 | dBc |
| Supply Voltage Range | ±4 V to ±18 V | |
| Gain Range | 1 to 10,000 | |
| Temperature Range | −40°C to +125°C | |
| Package Type | 8-Lead SOIC |
Key Features
- Low Noise: 1 nV/√Hz input noise and 45 nV/√Hz output noise, ensuring high signal integrity.
- High Accuracy DC Performance: 90 dB CMRR minimum (G = 1), 50 μV maximum input offset voltage, and 0.02% maximum gain accuracy (G = 1).
- Excellent AC Specifications: 80 dB CMRR to 5 kHz (G = 1), 15 MHz bandwidth (G = 1), 1.2 MHz bandwidth (G = 100), and 22 V/μs slew rate.
- High Distortion Performance: THD of −130 dBc (1 kHz, G = 1), suitable for demanding applications like vibration analysis.
- Versatile Power Supply: ±4 V to ±18 V dual supply range.
- Gain Setting: Gain can be set from 1 to 10,000 with a single resistor.
- Reference Pin: Allows the user to offset the output voltage, useful for interfacing to single supply signal chains.
Applications
- Medical Instrumentation: Suitable for precise medical measurements.
- Precision Data Acquisition: Ideal for high-accuracy data acquisition systems.
- Microphone Preamplification: Used in audio applications requiring low noise and high gain.
- Vibration Analysis: Excellent for analyzing fast-changing signals in vibration analysis.
- Industrial Measurement Systems: Used in various industrial measurement and control systems.
- Robotics and Communication Systems: Utilized in robotics and communication systems due to its high CMRR and low noise characteristics.
- Automotive and Aerospace Systems: Suitable for automotive and aerospace applications requiring high accuracy and minimal distortion.
Q & A
- What is the input noise performance of the AD8429ARZ-R7?
The AD8429ARZ-R7 has an input noise performance of 1 nV/√Hz.
- What is the CMRR of the AD8429ARZ-R7 at a gain of 1?
The CMRR is 90 dB at a gain of 1.
- What is the bandwidth of the AD8429ARZ-R7 at a gain of 1 and 100?
The bandwidth is 15 MHz at a gain of 1 and 1.2 MHz at a gain of 100.
- What is the slew rate of the AD8429ARZ-R7?
The slew rate is 22 V/μs.
- What is the THD of the AD8429ARZ-R7 at 1 kHz and a gain of 1?
The THD is −130 dBc at 1 kHz and a gain of 1.
- What is the supply voltage range for the AD8429ARZ-R7?
The supply voltage range is ±4 V to ±18 V.
- How is the gain set for the AD8429ARZ-R7?
The gain can be set from 1 to 10,000 with a single resistor.
- What is the temperature range for specified performance of the AD8429ARZ-R7?
The temperature range is −40°C to +125°C.
- In what package is the AD8429ARZ-R7 available?
The AD8429ARZ-R7 is available in an 8-lead plastic SOIC package.
- What are some common applications of the AD8429ARZ-R7?
Common applications include medical instrumentation, precision data acquisition, microphone preamplification, vibration analysis, and various industrial and automotive systems.
