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Dual, High-Side, Current-Sense Amplifiers and Drive Amplifiers

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • High-Side Current-Sense Amplifier with Gain of 2 or 10
  • ±1% Current-Sense Accuracy
  • Wide 5V to 32V Common-Mode Voltage Range— Independent of Supply Voltage
  • Adjustable Low Noise 0 to 5V or 0 to 10V Output Voltage Ranges with ±10mA Gate Drive
  • Drive Amplifier Features Fast Clamp to Ground

Applications/Uses

  • Cellular Base Stations
  • Industrial Process Control
  • Power Amplifiers

Description

The MAX1350–MAX1357 offer two programmable high-side current-sense amplifiers and two drive amplifiers integrated in a single package.

The current-sense amplifiers have a 5V to 32V common-mode input range and provide a voltage output that is a multiple of the sense voltage. The common-mode input range is independent of supply voltage. An external sense resistor determines the range of current monitored by a current-sense amplifier. Gains of 2 or 10 are available with a typical input-referred offset voltage of zero or 3mV. The 3mV offset option is ideal for applications where offset nulling is required.

The drive amplifiers provide up to ±10mA of output current capability and a high output capacitive load tolerance. Output transients are limited to ±100mV during power-up and power-down events. The drive amplifiers feature a digitally controllable fast output clamp to ground. The drive amplifier outputs are current limited and are offered with gains of 2 or 4.

The drive amplifiers draw approximately 4.75mA, while the current-sense amplifiers draw approximately 250µA with full-scale sense inputs. In shutdown mode, the total supply current reduces to less than 1µA.

The MAX1350–MAX1357 are available in a 20-pin TSSOP package and operate over the extended (-40°C to +85°C) temperature range.

Simplified Block Diagram

MAX1350, MAX1351, MAX1352, MAX1353, MAX1354, MAX1355, MAX1356, MAX1357: Typical Application Circuit MAX1350, MAX1351, MAX1352, MAX1353, MAX1354, MAX1355, MAX1356, MAX1357: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .