Overview
The Analog Devices AD8217BRMZ-R7 is a high-resolution, zero-drift current sense amplifier designed for precise current measurements in various industrial, power, and automotive applications. This device features a novel zero-drift architecture, ensuring high accuracy and stability over a wide temperature range. The AD8217BRMZ-R7 is packaged in an 8-lead MSOP (Mini Small Outline Package) and is RoHS compliant.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices |
| Part Number | AD8217BRMZ-R7 |
| Package | MSOP-8 |
| Operating Temperature Range | -40°C to +125°C |
| Storage Temperature Range | -65°C to +150°C |
| Maximum Input Voltage (+IN, -IN to GND) | 0 V to 85 V |
| Differential Input Voltage (+IN to -IN) | ±1 V |
| Gain Error | Maximum ±0.35% over the entire temperature range |
| Common-Mode Rejection Ratio (CMRR) | 100 dB typical at DC, from 4.5 V to 80 V |
| Offset Drift | Typically less than ±100 nV/°C |
| Internal LDO Output | Maximum 5.6 V |
Key Features
- High-resolution, zero-drift current sense amplifier
- Set gain of 20 V/V with a maximum ±0.35% gain error over the entire temperature range
- Excellent common-mode rejection from 4.5 V to 80 V
- Internal LDO allows the device to power directly from the high voltage rail
- Typical offset drift of ±100 nV/°C
- High voltage-to-current conversion accuracy of 0.5%
- Wide operating temperature range of -40°C to +125°C
Applications
- High side current sensing in 48 V telecom systems
- Power management in base stations
- Unidirectional motor control
- Precision high voltage current sources
- Battery management systems
- Industrial and automotive applications requiring precise current measurements
Q & A
- What is the primary function of the AD8217BRMZ-R7?
The AD8217BRMZ-R7 is a high-resolution, zero-drift current sense amplifier designed to measure small current signals accurately.
- What is the operating temperature range of the AD8217BRMZ-R7?
The operating temperature range is -40°C to +125°C.
- What is the common-mode rejection ratio (CMRR) of the AD8217BRMZ-R7?
The CMRR is 100 dB typical at DC, from 4.5 V to 80 V.
- Does the AD8217BRMZ-R7 require an additional power supply?
No, it includes an internal LDO that allows the device to power directly from the high voltage rail, provided the common-mode voltage is between 4.5 V and 80 V.
- What is the gain of the AD8217BRMZ-R7?
The gain is set at 20 V/V with a maximum ±0.35% gain error over the entire temperature range.
- What is the offset drift of the AD8217BRMZ-R7?
The offset drift is typically less than ±100 nV/°C.
- In what package is the AD8217BRMZ-R7 available?
The AD8217BRMZ-R7 is available in an 8-lead MSOP (Mini Small Outline Package).
- Is the AD8217BRMZ-R7 RoHS compliant?
- What are some typical applications of the AD8217BRMZ-R7?
Typical applications include high side current sensing in 48 V telecom systems, power management in base stations, unidirectional motor control, and precision high voltage current sources.
- What is the maximum output voltage of the internal LDO in the AD8217BRMZ-R7?
The maximum output voltage of the internal LDO is 5.6 V.
