Overview
The AD8219BRMZ, produced by Analog Devices Inc., is a high voltage, high resolution, current shunt amplifier designed for precise unidirectional current measurements. This device is particularly suited for applications requiring high-side current sensing across a shunt resistor. It features a set gain of 60 V/V and operates within a wide temperature range of -40°C to +125°C, making it ideal for various industrial and telecom environments.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Product Category | Current Sense Amplifiers |
| Package | 8-MSOP |
| Number of Pins | 8 |
| Operating Temperature Range | -40°C to +125°C |
| Supply Voltage Range | 4 V to 80 V |
| Gain | 60 V/V |
| Common-Mode Rejection Ratio (CMRR) | 110 dB |
| Input Offset Voltage | ±50 µV |
| Offset Drift | ±100 nV/°C |
| Bandwidth | 500 kHz |
| Mounting Type | Surface Mount |
| RoHS Compliance | Yes |
Key Features
- High Common-Mode Voltage Range: Operates from 4 V to 80 V, making it suitable for high-side current sensing applications.
- Zero Drift Core: Provides excellent temperature stability with a typical offset drift of ±100 nV/°C.
- Buffered Output Voltage: Directly interfaces with any typical analog-to-digital converter (ADC).
- High Gain Accuracy: Features a set gain of 60 V/V with a maximum ±0.3% gain error over the entire temperature range.
- Internal LDO: Allows the user to connect the VS pin to the inputs or use a separate supply, enhancing flexibility in power management.
- Output Clamping: Ensures the output voltage does not exceed 5.6 V, protecting the ADC input from overvoltage.
Applications
- High-Side Current Sensing: Ideal for monitoring current in high-voltage systems.
- 48 V Telecom: Used in telecommunications equipment for precise current measurement.
- Power Management: Essential in power management systems for accurate current monitoring.
- Base Stations: Utilized in base station power amplifier bias control for reliable operation.
- Unidirectional Motor Control: Suitable for motor control applications requiring precise current measurement.
- Precision High Voltage Current Sources: Used in applications requiring high accuracy and stability in current sourcing.
Q & A
- What is the primary function of the AD8219BRMZ?
The AD8219BRMZ is a high voltage, high resolution, current shunt amplifier designed for precise unidirectional current measurements across a shunt resistor.
- What is the operating temperature range of the AD8219BRMZ?
The operating temperature range is -40°C to +125°C.
- What is the gain of the AD8219BRMZ?
The gain is set at 60 V/V.
- What is the common-mode rejection ratio (CMRR) of the AD8219BRMZ?
The CMRR is 110 dB.
- How does the AD8219BRMZ handle high common-mode voltages?
The AD8219BRMZ operates from 4 V to 80 V, making it suitable for high-side current sensing applications.
- What is the significance of the zero drift core in the AD8219BRMZ?
The zero drift core provides excellent temperature stability with a typical offset drift of ±100 nV/°C.
- How does the internal LDO in the AD8219BRMZ enhance its functionality?
The internal LDO allows the user to connect the VS pin to the inputs or use a separate supply, enhancing flexibility in power management.
- What is the purpose of output clamping in the AD8219BRMZ?
Output clamping ensures the output voltage does not exceed 5.6 V, protecting the ADC input from overvoltage.
- In what types of applications is the AD8219BRMZ commonly used?
The AD8219BRMZ is commonly used in high-side current sensing, 48 V telecom, power management, base stations, unidirectional motor control, and precision high voltage current sources.
- Is the AD8219BRMZ RoHS compliant?
Yes, the AD8219BRMZ is RoHS compliant.
