TSM9938F A 1A, SOT23 Precision Current-Sense Amplifier FEATURES DESCRIPTION The voltage-output TSM9938F current-sense Second-source for MAX9938F Ultra-Low Supply Current: 1 A amplifier is electrically and form-factor identical to the MAX9938F current-sense amplifier. Consuming a Wide Input Common Mode Range: +1.6V to +28V Low Input Offset Voltage: 500 V (max) very low 1 A supply current, the TSM9938F high-side Low Gain Error: <0.5% (max) current-sense amplifier exhibits a 500-V (max) VOS and a 0.5% (max) gain error, both specifications Voltage Output optimized for any precision current measurement. For Gain Option Available: all high-side current-sensing applications, the TSM9938F: Gain = 50V/V TSM9938F features a wide input common-mode 5-Pin SOT23 Packaging voltage range from 1.6V to 28V. APPLICATIONS The SOT23 package makes the TSM9938F an ideal Notebook Computers choice for pcb-area-critical, low-current, high- Power Management Systems accuracy current-sense applications in all battery- Portable/Battery-Powered Systems powered portable instruments. PDAs Smart Phones The TSM9938F is specified for operation over the -40C to +85C extended temperature range. TYPICAL APPLICATION CIRCUIT Input Offset Voltage Histogram 35 30 25 15 15 10 5 0 0 10 20 30 40 50 INPUT OFFSET VOLTAGE - V Page 1 2014 Silicon Laboratories, Inc. All rights reserved. PERCENT OF UNITS - % TSM9938F ABSOLUTE MAXIMUM RATINGS RS+, RS- to GND- ............................................. -0.3V to +30V Operating Temperature Range ...................... -40C to +85C OUT to GND- ...................................................... -0.3V to +6V Junction Temperature ................................................ +150C RS+ to RS- ..................................................................... 30V Storage Temperature Range ....................... -65C to +150C Short-Circuit Duration: OUT to GND .................... Continuous Lead Temperature (Soldering, 10s) ........................... +300C Continuous Input Current (Any Pin) ............................ 20mA Soldering Temperature (Reflow) ............................ +260C Continuous Power Dissipation (T = +70C) A 5-Pin SOT23 (Derate at 3.9mW/C above +70C) .. 312mW Electrical and thermal 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 condition beyond those indicated in the operational sections of the specifications is not implied. Exposure to any absolute maximum rating conditions for extended periods may affect device reliability and lifetime. PACKAGE/ORDERING INFORMATION ORDER NUMBER PART MARKINGCARRIERQUANTITY Tape TSM9938FEUK+T TADA 3000 & Reel Lead-free Program: Silicon Labs supplies only lead-free packaging. Consult Silicon Labs for products specified with wider operating temperature ranges. Page 2 TSM9938F Rev. 1.0