Overview
The AD8220BRMZ-RL, produced by Analog Devices Inc., is a single-supply, JFET input instrumentation amplifier designed for high-performance, portable instrumentation applications. It is notable for being the first such amplifier available in an MSOP package, which significantly reduces board space requirements. This amplifier is optimized for low power consumption and excellent ac specifications, making it ideal for battery-powered devices and applications where dynamic range is critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Common-Mode Rejection Ratio (CMRR) | 86 dB (dc), 80 dB (5 kHz, G = 1) | dB |
| Bandwidth | 1.5 MHz (G = 1), 800 kHz (G = 10), 120 kHz (G = 100), 14 kHz (G = 1000) | kHz |
| Input Noise | 14 nV/√Hz (1 kHz) | nV/√Hz |
| Slew Rate | 2 V/μs | V/μs |
| Quiescent Supply Current | 750 μA (maximum) | μA |
| Input Bias Current | 10 pA (maximum) | pA |
| Input Offset Current | 0.6 pA (maximum) | pA |
| Supply Voltage Range | 4.5 V to 36 V (single supply), ±2.25 V to ±18 V (dual supply) | V |
| Package | MSOP-8 | |
| Operating Temperature Range | −40°C to +85°C (A and B grade), −40°C to +125°C (W grade) | °C |
Key Features
- High CMRR: Minimum CMRR of 86 dB at dc and 80 dB at 5 kHz for G = 1.
- Low Power Consumption: Maximum quiescent supply current of 750 μA.
- Single-Supply Operation: Can operate on a single 4.5 V to 36 V supply or a dual ±2.25 V to ±18 V supply.
- Rail-to-Rail Output: Maximizes dynamic range on low voltage supplies.
- Gain Setting: Gain can be set from 1 to 1000 with a single resistor.
- Reference Pin: Allows the user to offset the output voltage.
- ESD Protection: 4 kV ESD protection.
- Compact Package: Available in MSOP-8 package, reducing board space requirements.
Applications
- Medical Instrumentation: Suitable for high-precision medical devices.
- Precision Data Acquisition: Ideal for systems requiring accurate signal amplification.
- Transducer Interfaces: Used to amplify signals from various transducers.
- Automotive and Aerospace Applications: Qualified for automotive and aerospace use with specific grades (e.g., AD8220-EP for defense and aerospace).
Q & A
- What is the typical input noise of the AD8220?
The AD8220 has a typical input noise of 14 nV/√Hz at 1 kHz.
- What is the maximum quiescent supply current of the AD8220?
The maximum quiescent supply current is 750 μA.
- What is the common-mode rejection ratio (CMRR) of the AD8220?
The CMRR is a minimum of 86 dB at dc and 80 dB at 5 kHz for G = 1.
- Can the AD8220 operate on a single supply voltage?
Yes, it can operate on a single supply voltage from 4.5 V to 36 V.
- What is the slew rate of the AD8220?
The slew rate is 2 V/μs.
- What is the input bias current of the AD8220?
The maximum input bias current is 10 pA.
- What package options are available for the AD8220?
The AD8220 is available in an MSOP-8 package.
- What are the operating temperature ranges for the AD8220?
The operating temperature ranges are −40°C to +85°C for A and B grades, and −40°C to +125°C for the W grade.
- Can the AD8220 be used in automotive applications?
Yes, the AD8220 is qualified for automotive applications with the W grade.
- How is the gain set for the AD8220?
The gain can be set from 1 to 1000 using a single resistor.
