Refer to the PDF data sheet for device specific package drawings
The TMCS1100-Q1 is a galvanically isolated Hall-effect current sensor capable of DC or AC current measurement with high accuracy, excellent linearity, and temperature stability. A low-drift, temperature-compensated signal chain provides < 1% full-scale error across the device temperature range.
The input current flows through an internal 1.8-mΩ conductor that generates a magnetic field measured by an integrated Hall-effect sensor. This structure eliminates external concentrators and simplifies design. Low conductor resistance minimizes power loss and thermal dissipation. Inherent galvanic insulation provides a 600-V lifetime working voltage and 3-kVRMS basic isolation between the current path and circuitry. Integrated electrical shielding enables excellent common-mode rejection and transient immunity.
The output voltage is proportional to the input current with four sensitivity options. Fixed sensitivity allows the TMCS1100-Q1 to operate from a single 3-V to 5.5-V power supply, eliminates ratiometry errors, and improves supply noise rejection. The current polarity is considered positive when flowing into the positive input pin. The VREF input pin provides a variable zero-current output voltage, enabling bidirectional or unidirectional current sensing.
The TMCS1100-Q1 draws a maximum supply current of 6 mA, and all sensitivity options are specified over the operating temperature range of –40°C to +125°C.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TMCS1100-Q1 | SOIC (8) | 4.90 mm × 3.90 mm |
DATE | REVISION | NOTES |
---|---|---|
June 2021 | * | Initial release. |
PRODUCT | SENSITIVITY | BIDIRECTIONAL LINEAR MEASUREMENT RANGE, VREF = VS / 2(1) | UNIDIRECTIONAL LINEAR MEASUREMENT RANGE, VREF = VGND(1) | ||
---|---|---|---|---|---|
ΔVOUT / ΔIIN+, IN– | VS = 5 V | VS = 3.3 V | VS = 5 V | VS = 3.3 V | |
TMCS1100A1-Q1 | 50 mV/A | ±46 A(2) | ±29 A(2) | 1 A to 96 A(2) | 1 A to 62 A(2) |
TMCS1100A2-Q1 | 100 mV/A | ±23 A(2) | ±14.5 A | 0.5 A to 48 A(2) | 0.5 A to 31 A(2) |
TMCS1100A3-Q1 | 200 mV/A | ±11.5 A | ±7.25 A | 0.25 A to 24 A(2) | 0.25 A to 15.5 A |
TMCS1100A4-Q1 | 400 mV/A | ±5.75 A | -- | 0.125 A to 12 A | -- |