TS1103-100EG6

Instrumentation, Op Amps, Buffer Amps Overview

The TS1103-100EG6 is a bidirectional precision current-sense amplifier from the TS1101 family, manufactured by Silicon Laboratories. It features an ultra-low supply current of 1µA and operates with a wide input common-mode voltage range from +2V to +27V. The device provides a voltage output with a fixed gain of 100V/V and includes a SIGN comparator digital output to indicate current flow direction. Key electrical specifications include a maximum input offset voltage of 200µV and a maximum gain error of 0.6%. It is housed in a 6-lead SOT23 package and is specified for operation over an extended temperature range of -40°C to +105°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Bidirectional high-side current sensing capability with self-powered operation
• Integrated SIGN comparator providing digital indication of current flow direction
• Ultra-low supply current consumption suitable for battery-powered applications
• Wide input common-mode voltage range supporting various power management systems

Instrumentation, Op Amps, Buffer Amps Applications

• Notebook Computers
• Power Management Systems
• Portable/Battery-Powered Systems
• Smart Chargers
• Smart Phones

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix EG6 corresponds to the Tape & Reel carrier quantity as listed in the official documentation. Confirm that the component meets lead-free packaging requirements. Ensure the selected part number aligns with the required gain option of 100V/V. Check for any specific automotive or wider temperature range variants if standard specifications are insufficient for the target application environment.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the TS1103-100EG6 when a gain of 100V/V is required for bidirectional current sensing. Consider the 200µV max input offset voltage and 0.6% max gain error for high-accuracy applications. Evaluate the 1µA supply current against system power constraints. Ensure the input common-mode voltage range of 2V to 27V covers the application's operating conditions. Verify compatibility with the 6-lead SOT23 package for PCB layout constraints.

Instrumentation, Op Amps, Buffer Amps Part Context

The TS1103-100EG6 belongs to the TS1101 family of bidirectional current-sense amplifiers. This family is designed for cost-sensitive applications requiring low power consumption and high accuracy. The TS1103 series offers four gain options: 25V/V, 50V/V, 100V/V, and 200V/V. The -100 variant specifically provides a gain of 100V/V, making it suitable for applications where moderate sense resistor voltages need to be amplified for ADC interfacing or monitoring.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Consult the manufacturer's documentation for direct replacements within the TS1101 family. Verify pinout and functional compatibility before substituting with other current-sense amplifiers. No public confirmed substitute part numbers are available in the provided source material.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the SIGN output indicate current direction?

The SIGN output is a push-pull logic signal that is HIGH when VRS+ > VRS- (current flowing into RS+) and LOW when VRS- > VRS+ (current flowing into RS-).

What is the purpose of the internal low-pass filter?

The TS1103 incorporates a 50-kHz typical second-order differential low-pass filter to minimize the effects of externally-injected noise without requiring external filters that could introduce additional offset errors.

Can the TS1103 operate without a separate power supply pin?

Yes, the TS1103 is self-powered and draws its supply current from the voltage at its RS+ and RS- terminals, eliminating the need for a separate power supply pin for the main amplifier section.