Part: MAX9611/MAX9612 — Maxim Integrated Products

Type: High-Side Current-Sense Amplifier with Integrated ADC

Description: High-side current-sense amplifiers operating over a 0V to 60V input common-mode voltage range, featuring an integrated 12-bit, 500sps ADC, a configurable op amp or comparator, and an I2C interface, all operating from a 2.7V to 5.5V supply.

Operating Conditions:

• Supply voltage: 2.7V to 5.5V
• Operating temperature: -40°C to +125°C
• Input common-mode voltage range: 0V to 60V

Absolute Maximum Ratings:

• Max supply voltage: +6V (VCC to GND)
• Max continuous current: ±20mA (into any pin)
• Max junction temperature: +150°C

Key Specs:

• Input Common-Mode Range: 0 to 60 V
• Input Offset Voltage ADC Path (TA = -40°C to +125°C, gain = 8x): 2 mV (max)
• Gain Error (TA = -40°C to +125°C, gain = 8x): 2.5 % (max)
• Input Bias Current (TA = -40°C to +125°C): 5 μA (max)
• Common-Mode Rejection Ratio (TA = -40°C to +125°C, gain = 8x): 94 dB (min)
• ADC Resolution: 12 Bit
• ADC Conversion Time: 2 ms
• I2C Serial-Clock Frequency: 400 kHz (max)

Features:

• 0V to +60V Input Common-Mode Voltage Range
• 2.7V to 5.5V Power-Supply Range, Compatible with 1.8V and 3.3V Logic
• 5μA Software Shutdown Current
• Integrated 12-Bit ADC
• 13μV Current-Sense ADC Resolution
• 0.5% (max) Current-Sense ADC Gain Error
• I2C Bus with 16 Addresses
• Small, 3mm x 5mm 10-Pin μMAX Package
• -40°C to +125°C Operating Temperature Range

Applications:

• Hybrid Automotive Power Supplies
• Server Backplanes
• Base-Station PA Control
• Base-Station Feeder Cable Bias-T
• Telecom Cards
• Battery-Operated Equipment

Package:

• 10-pin μMAX

• S 0V to +60V Input Common-Mode Voltage Range
• S 2.7V to 5.5V Power-Supply Range, Compatible with 1.8V and 3.3V Logic
• S 5μA Software Shutdown Current
• S Integrated 12-Bit ADC
• S 13μV Current-Sense ADC Resolution
• S 500μV (max) Current-Sense ADC Input Offset Voltage
• S 0.5% (max) Current-Sense ADC Gain Error
• S I 2 C Bus with 16 Addresses
• S Small, 3mm x 5mm 10-Pin μMAX Package
• S -40 N C to +125 N C Operating Temperature Range

Hybrid Automotive Power Supplies

Server Backplanes Base-Station PA Control Base-Station Feeder Cable Bias-T Telecom Cards

Battery-Operated Equipment

F MAX is a registered trademark of Maxim Integrated Products, Inc.

MAX9611AUB+T Pinout

Package: µMAX-10 (10-pin)

Notes

• Pin numbers extracted directly from the datasheet pin description table.
• VCC requires bypass capacitors: 0.1 µF and 4.7 µF in parallel between VCC and GND.
• A0 and A1 are I²C address selection pins.
• RS+ and RS- form a differential current-sensing input across an external sense resistor.

(VCC = 3.3V, VRS+ = VRS- = +12V, VSENSE = (VRS+ - VRS-) = 0V, TA = -40 N C to +125 N C, unless otherwise noted. Typical values are at TA = +25 N C.) (Note 2)

2 ______________________________________________________________________________________

• RS+, RS-, OUT to GND.........................................-0.3V to +65V
• Differential Input Voltage, RS+ - RS- ................................. Q 65V
• All Other Pins to GND.............................................-0.3V to +6V
• OUT Short-Circuit to GND.........................................Continuous
• Continuous Current into Any Pin..................................... Q 20mA
• Continuous Power Dissipation (T A = +70 N C) 10-Pin F MAX (derate 8.8mW/ N C above +70 N C)...........707mW

F MAX Package Junction-to-Ambient

• Operating Temperature Range........................ -40 N C to +125 N C
• Junction Temperature .....................................................+150 N C
• Storage Temperature Range............................ -65 N C to +150 N C
• Lead Temperature (soldering, 10s) ................................+300 N C
• Soldering Temperature (reflow) ......................................+260 N C

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal consideration, refer to www.maxim-ic.com/thermal-tutorial .

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.

Functional Diagrams appear at end of data sheet.

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Maxim Integrated Products 1

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a '+', '#', or '-' in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.

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