Overview
The AD8220BRMZ is a single-supply, JFET input instrumentation amplifier produced by Analog Devices Inc. It is designed to meet the needs of high-performance, portable instrumentation. This amplifier is notable for being the first single-supply JFET input instrumentation amplifier available in an MSOP package, making it highly versatile for various applications. The AD8220BRMZ is optimized for low power consumption and excellent ac specifications, making it ideal for battery-powered devices and other portable instrumentation.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD8220BRMZ |
| Package / Case | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) |
| Number of Pins | 8 |
| Supply Voltage | 4.5 V to 36 V (single supply), ±2.25 V to ±18 V (dual supply) |
| Bandwidth | 1.5 MHz (G = 1) |
| Input Noise | 14 nV/√Hz at 1 kHz |
| Slew Rate | 2 V/μs |
| Quiescent Supply Current | 750 μA (maximum) |
| Input Bias Current | 10 pA (maximum) |
| Input Offset Current | 0.6 pA (maximum) |
| Common-Mode Rejection Ratio (CMRR) | 86 dB at dc, 80 dB at 5 kHz (G = 1) |
| ESD Protection | 4 kV |
Key Features
- Single-Supply Operation: The AD8220BRMZ can operate on a single supply from 4.5 V to 36 V, as well as on a ±2.25 V to ±18 V dual supply, making it versatile for various power supply configurations.
- High CMRR: Minimum CMRR of 86 dB at dc and 80 dB at 5 kHz for G = 1, ensuring high common-mode rejection.
- Low Power Consumption: Maximum quiescent supply current of 750 μA, ideal for battery-powered devices.
- Low Input Currents: Maximum input bias current of 10 pA and input offset current of 0.6 pA.
- Rail-to-Rail Output: Maximizes dynamic range on low voltage supplies common in portable applications.
- Gain Setting: Gain can be set from 1 to 1000 with a single resistor.
- Reference Pin: Allows the user to offset the output voltage, useful when interfacing with analog-to-digital converters.
- ESD Protection: 4 kV ESD protection for robustness against electrostatic discharge.
Applications
- Portable Instrumentation: Ideal for battery-powered devices due to its low power consumption and single-supply operation.
- Medical Devices: Suitable for medical instrumentation requiring high CMRR and low noise.
- Aerospace and Defense: The AD8220-EP version supports defense and aerospace applications with a military temperature range and controlled manufacturing baseline.
- Automotive Applications: Qualified for automotive use with robust specifications and reliability.
- Industrial Automation: Used in various industrial automation applications requiring precise signal amplification and high CMRR.
Q & A
- What is the primary application of the AD8220BRMZ?
The AD8220BRMZ is primarily used in high-performance, portable instrumentation due to its single-supply operation and low power consumption.
- What are the supply voltage options for the AD8220BRMZ?
The AD8220BRMZ can operate on a single supply from 4.5 V to 36 V or on a ±2.25 V to ±18 V dual supply.
- What is the maximum input bias current of the AD8220BRMZ?
The maximum input bias current is 10 pA.
- How is the gain set for the AD8220BRMZ?
The gain can be set from 1 to 1000 using a single resistor.
- What is the common-mode rejection ratio (CMRR) of the AD8220BRMZ?
The minimum CMRR is 86 dB at dc and 80 dB at 5 kHz for G = 1.
- Does the AD8220BRMZ have ESD protection?
Yes, it has 4 kV ESD protection.
- What is the bandwidth of the AD8220BRMZ?
The bandwidth is 1.5 MHz for a gain of 1.
- Can the AD8220BRMZ be used in automotive applications?
Yes, it is qualified for automotive use.
- Is the AD8220BRMZ suitable for aerospace and defense applications?
Yes, the AD8220-EP version supports defense and aerospace applications with specific qualifications.
- What is the maximum quiescent supply current of the AD8220BRMZ?
The maximum quiescent supply current is 750 μA.
