STEVAL-ISQ007V1

STEVAL-ISQ007V1 High-side current-sense amplifier demonstration board based on the TSC101 Data Brief Features Independent supply and input common-mode voltages Wide common-mode operating range: 2.8 V to 30 V Wide common-mode surviving range: -0.3 V to 60 V (load-dump) Wide supply voltage range: 4 V to 24 V Low current consumption: ICC max is 300 A Internally fixed gain: 20 V/V (TSC101A) 50 V/V (TSC101B) 100 V/V (TSC101C) Buffered output STEVAL-ISQ007V1 Description This demonstration board is specifically designed for the TSC101 integrated circuit. The TSC101 measures a very small voltage drop on a high-side shunt resistor, and, using an internally fixed gain, amplifies the difference into a ground-referenced output voltage the amplification gain is internally fixed. Input common-mode and power supply voltages are independent. The common-mode voltage can range from 2.8 V to 30 V in operating conditions, and up to 60 V in absolute maximum ratings. The supply voltage can range from 4 V to 24 V. Current consumption of less than 300 A over the temperature range and low input bias current (less than 8 A in standard conditions, a few 100 nA if VCC isn t supplied) are particularly interesting to save power in the application. February 2009 Rev 1 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4Circuit schematic STEVAL-ISQ007V1 1 Circuit schematic Figure 1. Schematic J2 R1 J3 1 2 1 1 Current in Current out R2 IC1 VP VM TSC101 5 VCC C1 CAP J1 OUT 1 1 2 3 CON3 GND J4 1 Gnd 2/4 2 3 3 4 4