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.

Block Diagram

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Upgraded Drop-in Replacement for AD202

Isolated Power Outputs

Small Size: 4 Channels/lnch Low

Uncommitted Input Amplifier

CMR: 130dB (Gain = 100V/V)

High Accuracy: ±0.01%/0.005%

High CMV Isolation: ±2000V Continuous

Part Number Package Datasheet
AD202KNATI DIP Datasheet
AD202KYATI SIP Datasheet
AD202JNATI
Under Development
DIP Datasheet
AD202JYATI
Under Development
SIP Datasheet

Click to View

Upgraded Drop-in Replacement for AD202

Isolated Power Outputs

Small Size: 4 Channels/lnch Low

Uncommitted Input Amplifier

CMR: 130dB (Gain = 100V/V)

High Accuracy: ±0.01%/0.005%

High CMV Isolation: ±2000V Continuous

Part Number Package Datasheet
ATIA202KN
(Obsolete, identically replaced by AD202KNATI)
DIP Datasheet
ATIA202KY
(Obsolete, identically replaced by AD202KYATI)
SIP Datasheet

Isolated Power Outputs

Small Size

Uncommitted Input Amplifier

CMR: 130dB (Gain = 100V/V)

High Accuracy: ±0.05% Max Nonlinearity

High CMV Isolation: ±50,000V Continuous

Part Number Datasheet with
Pricelist
AT5005 AT5005
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