MAX4080FAUA+T

Part: MAX4080FAUA+T — Maxim Integrated (MAX4080/MAX4081 family)

Type: High-Side Current-Sense Amplifier (unidirectional MAX4080 / bidirectional MAX4081)

Description: 4.5–76 V common-mode and supply range, high-side current-sense amplifier with 5 V/V gain (F version), ±0.1% typical gain accuracy, 75 μA typical supply current, in an 8-pin μMAX package.

Operating Conditions:

• Supply voltage (VCC): 4.5–76 V
• Common-mode range (VRS+): 4.5–76 V, independent of VCC
• Operating temperature: -40 to +125 °C
• Gain for the F version: 5 V/V, with a full-scale sense voltage of ±1000 mV typical (the negative range applies to the MAX4081 only)

Absolute Maximum Ratings:

• VCC to GND: -0.3 V to +80 V
• RS+, RS- to GND: -0.3 V to +80 V
• Differential input voltage (VRS+ - VRS-): ±80 V
• OUT to GND: -0.3 V to the lesser of +18 V or (VCC + 0.3 V)
• Current into any pin: ±20 mA
• Continuous power dissipation, 8-pin μMAX (TA = +70 °C): 362 mW (derate 4.5 mW/°C above +70 °C)
• Junction temperature: +150 °C
• Storage temperature: -65 to +150 °C
• Lead temperature (soldering, 10 s): +300 °C

Key Specs:

• Supply current (VCC = VRS+ = 76 V, no load): 75 μA typical, 190 μA max (MAX4080)
• Gain accuracy (VCC = VRS+ = 48 V): ±0.1% typical and ±0.6% max at +25 °C; ±1.2% max over -40 to +125 °C
• Input offset voltage (VCC = VRS+ = 48 V): ±0.1 mV typical and ±0.6 mV max at +25 °C; ±1.2 mV max over -40 to +125 °C
• CMRR: 100 dB min, 124 dB typical
• PSRR: 100 dB min, 122 dB typical
• Input bias current (VCC = VRS+ = 76 V): 5 μA typical, 12 μA max
• Bandwidth (MAX4080): 250 kHz typical
• Settling time to 1%: 20 μs typical
• Power-up time: 50 μs typical
• Capacitive-load stability: 500 pF

Features:

• Wide 4.5–76 V input common-mode range
• Three gain versions: 5 V/V (F), 20 V/V (T), 60 V/V (S)
• ±0.1% full-scale accuracy
• Low 100 μV input offset voltage
• Independent operating supply voltage
• Output short-circuit to GND is continuous
• Output voltage internally clamped to 18 V
• No phase reversal when overdriven

Applications:

• Automotive (12 V, 24 V, or 42 V batteries)
• 48 V telecom and backplane current measurement
• Bidirectional motor control
• Power-management systems
• Avalanche photodiode and PIN-diode current monitoring
• General system and board-level current sensing
• Precision high-voltage current sources

Package:

• 8-pin μMAX (FAUA)
• 8-pin SO (available for other ordering options)

• ♦ Wide 4.5V to 76V Input Common-Mode Range
• ♦ Bidirectional or Unidirectional ISENSE
• ♦ Low-Cost, Compact, Current-Sense Solution
• ♦ Three Gain Versions Available 5V/V (MAX4080F/MAX4081F) 20V/V (MAX4080T/MAX4081T) 60V/V (MAX4080S/MAX4081S)
• ♦ ±0.1% Full-Scale Accuracy
• ♦ Low 100 μ V Input Offset Voltage
• ♦ Independent Operating Supply Voltage
• ♦ 75 μ A Supply Current (MAX4080)
• ♦ Reference Input for Bidirectional OUT (MAX4081)
• ♦ Available in a Space-Saving, 8-Pin μ MAX Package

Automotive (12V, 24V, or 42V Batteries)

48V Telecom and Backplane Current

Measurement

Bidirectional Motor Control

Power-Management Systems

Avalanche Photodiode and PIN-Diode Current Monitoring

General System/Board-Level Current Sensing

Precision High-Voltage Current Sources

μMAX is a registered trademark of Maxim Integrated Products, Inc.

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Maxim Integrated Products

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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.

(VCC = VRS+ = 4.5V to 76V, VREF1A = VREF1B = 5V (MAX4081 only), VSENSE = (VRS+ - VRS-) = 0V, RLOAD = 100k Ω , TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)

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Stresses beyond those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages .

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Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages .

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