Overview
The AD8220WARMZ-R7, produced by Analog Devices Inc., is a single-supply, JFET input instrumentation amplifier designed to meet the needs of high-performance, portable instrumentation. It is the first such amplifier available in an MSOP package, making it highly versatile for various applications. The AD8220 is optimized for low power consumption and excellent ac specifications, making it suitable for a wide range of instrumentation needs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Common-Mode Rejection Ratio (CMRR) | 86 dB (dc), 80 dB (5 kHz, G = 1) | - | - | dB |
| Input Bias Current | 10 pA | - | 300 pA | pA |
| Input Offset Current | 0.6 pA | - | 2 pA | pA |
| Bandwidth, -3 dB | 1500 kHz (G = 1), 800 kHz (G = 10), 120 kHz (G = 100), 14 kHz (G = 1000) | - | - | kHz |
| Slew Rate | 2 V/μs | - | - | V/μs |
| Quiescent Supply Current | - | - | 750 μA | μA |
| Supply Voltage Range | 4.5 V to 36 V (single supply), ±2.25 V to ±18 V (dual supply) | - | - | V |
| Operating Temperature Range | -40°C | - | +125°C | °C |
| Package Type | MSOP-8 | - | - | - |
Key Features
- High CMRR: Minimum CMRR of 86 dB at dc and 80 dB at 5 kHz for G = 1.
- Low Input Bias Current: Maximum input bias current of 10 pA.
- Rail-to-Rail Output: Maximizes dynamic range on low voltage supplies.
- Flexible Power Supply: Can operate on a single +5 V supply or ±18 V dual supply.
- High Bandwidth: 1.5 MHz bandwidth at G = 1.
- Low Noise: 14 nV/√Hz input noise at 1 kHz.
- ESD Protection: 4 kV ESD protection.
- Gain Setting: Gain set with a single resistor (G = 1 to 1000).
Applications
- Portable Instrumentation: Ideal for battery-powered devices due to low power consumption.
- Biopotential Measurements: Suitable for ECG, EEG, and other biopotential signal amplification.
- Industrial Automation: Used in various industrial measurement and control systems.
- Medical Devices: Applicable in medical instrumentation requiring high accuracy and low noise.
- Aerospace and Defense: The AD8220-EP version is qualified for defense and aerospace applications.
Q & A
- What is the typical input bias current of the AD8220?
The typical input bias current of the AD8220 is 10 pA, which remains below 300 pA over the entire industrial temperature range.
- What is the bandwidth of the AD8220 at a gain of 1?
The bandwidth of the AD8220 at a gain of 1 is 1.5 MHz.
- Can the AD8220 operate on a single supply voltage?
- What is the slew rate of the AD8220?
The slew rate of the AD8220 is 2 V/μs.
- What is the operating temperature range of the AD8220?
The operating temperature range of the AD8220 is -40°C to +125°C.
- What package type is the AD8220 available in?
The AD8220 is available in an MSOP-8 package.
- What is the quiescent supply current of the AD8220?
The maximum quiescent supply current of the AD8220 is 750 μA.
- Does the AD8220 have ESD protection?
- How is the gain of the AD8220 set?
The gain of the AD8220 is set with a single resistor, allowing gains from 1 to 1000.
- Is the AD8220 suitable for aerospace and defense applications?
