High Voltage Isolation Amplifier

Precision Signal Detection and Isolation for High-Voltage Applications
High-voltage isolation amplifiers play a critical role in detecting small voltage signals superimposed on high AC or DC voltages, typically exceeding 1000V. These amplifiers accurately isolate, amplify, and scale down the detected signals to a low common voltage level, enabling safe and precise signal processing.

Key Applications
The primary use of isolation amplifiers is in current measurement across current-sensing resistors positioned on high-voltage rails, such as:

AC power grids
Electric vehicle powertrain battery banks
By delivering a precisely amplified voltage signal, referenced to the ground of a low-voltage circuit, these amplifiers provide a reliable and accurate representation of the current flowing through the current-sensing resistor.

Introducing the AD202ATI – A High-Performance Upgrade
Analog Technologies, Inc. has developed a comprehensive series of high-voltage isolation amplifiers, among which the AD202ATI stands out as an enhanced, pin-to-pin compatible upgrade to the AD202.

Major Improvements Over AD202:
Exceptional Accuracy: ±0.005% (compared to AD202's ±0.025%)
Expanded Bandwidth: 20kHz (4× higher than AD202's 5kHz)
Cost-Effective Solution – Enhanced performance at a lower price

Additional Features:
Available in Two Package Types: SIP and DIP
Fully Encapsulated with Epoxy for durability and environmental protection

The AD202ATI delivers unmatched precision and efficiency, making it an optimal choice for high-voltage current sensing and signal isolation applications.

Selection Guide of High Voltage Isolation Amplifier

Part #	Description	Package	Bandwidth	Serial #	Status	Output Voltage vs. Power Supply	Online Purchase: =shop.analogtechnologies.com = smtzone.com = digikey.com(15% higher priced due to commission fee)
Datasheet		Common Mode Vmax.	Rise Time
Price (@>50PCs)		P. S. Current	Linearity				Stock
AD202KNATI $44	Upgraded replacement for AD202KN	DIP	800kHz	>25156	In production	Isolated	5
		2000V	0.5μs
		12mA	±0.02%
AD202JNATI $54	Upgraded replacement for AD202JN	DIP	800kHz	-	In production	Isolated	0
		1000V	0.5μs
		12mA	±0.02%
AD202KYATI $44	Upgraded replacement for AD202KY	SIP	800kHz	>25290	In production	Isolated	0
		2000V	0.5μs
		12mA	±0.02%
AD202JYATI $54	Upgraded replacement for AD202JY	SIP	800kHz	-	In production	Isolated	0
		1000V	0.5μs
		12mA	±0.02%
AD202KYATI	Pin out compatible with AD202KY, but output voltage is not isolated with power supply	SIP	20kHz	≤25290	Ceased production	Non-Isolated	N/A
		2000V	18μs
		20mA	±0.02%
AD202KNATI	Pin out compatible with AD202KN, but output voltage is not isolated with power supply	DIP	20kHz	≤25156	Ceased production	Non-Isolated	N/A
		2000V	18μs
		20mA	±0.02%
AD202KN	Made by Analog Device	DIP	2kHz	-	Ceased production	Isolated	N/A
		2000V	180μs
		5mA	±0.025%
AD202JN	Made by Analog Device	DIP	2kHz	-	Ceased production	Isolated	N/A
		1000V	180μs
		5mA	±0.05%
AD202KY	Made by Analog Device	SIP	2kHz	-	Ceased production	Isolated	N/A
		2000V	180μs
		5mA	±0.025%
AD202JY	Made by Analog Device	SIP	2kHz	-	Ceased production	Isolated	N/A
		1000V	180μs
		5mA	±0.05%
ATIA202KN	Obsolete, identically replaced by AD202KNATI	DIP	20kHz	-	Ceased production	Isolated	N/A
		2000V	18μs
		12mA	±0.01%
ATIA202KY	Obsolete, identically replaced by AD202KYATI	SIP	20kHz	-	Ceased production	Isolated	N/A
		2000V	18μs
		12mA	±0.01%