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Product Detailed Parameters
- Description：IC COMPARATOR 2 W/VOLT REF 8SOIC
- Series：TSM97x
- Mfr：Silicon Labs
- Package：Tube
- Type：with Voltage Reference
- Number of Elements：2
- Output Type：Open-Drain
- Voltage - Supply, Single/Dual (±)：2.5V ~ 11V, ±1.25V ~ 5.5V
- Voltage - Input Offset (Max)：10mV @ 2.5V
- Current - Input Bias (Max)：0.005µA @ 2.5V
- Current - Output (Typ)：40mA
- Current - Quiescent (Max)：6µA
- CMRR, PSRR (Typ)：67dB CMRR, 67dB PSRR
- Propagation Delay (Max)：12µs
- Hysteresis：50mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The TSM973ESA+ is a dual-channel, low-voltage analog comparator from Silicon Labs. It operates on single supplies of +2.5V to +11V or dual supplies of ±1.25V to ±5.5V. The device features an internal 1.182V reference with ±1% accuracy and supports adjustable hysteresis via an external HYST pin. It draws a maximum quiescent current of 6μA over the industrial temperature range (-40°C to +85°C). The output stage is open-drain, enabling wired-OR configurations.
Feature Summary
- Dual comparators with integrated 1.182V voltage reference
- Ultra-low power consumption suitable for battery-powered systems
- Adjustable hysteresis capability through dedicated input pin
- Open-drain outputs compatible with wired-OR logic applications
Applications
- Threshold detectors
- Window comparators
- Level translators
- Oscillator circuits
- Battery switchover circuits
Procurement Notes
Verify component authenticity as this part may be subject to obsolescence notices. Confirm that the specific suffix matches the required package and temperature grade. Ensure compatibility with existing circuit designs regarding supply voltage ranges and output drive capabilities before finalizing procurement orders.
Selection Notes
Select this component when a dual comparator with an integrated reference is required. It is suitable for applications needing adjustable hysteresis without additional external components. Consider the open-drain output limitation and ensure appropriate pull-up resistors are included in the design for proper signal levels.
Part Context
This device belongs to the TSM97x/98x family of micropower analog comparators. It serves as an alternate source for Maxim Integrated MAX973 devices. The family includes single, dual, and quad variants with varying reference accuracies and hysteresis options, all sharing similar electrical characteristics and form factors.
Replacement Considerations
TSM973ESA+ is electrically equivalent to MAX973. Verify pinout compatibility and operating temperature ranges when substituting with other dual comparators from different manufacturers.
FAQ
How is hysteresis configured on the TSM973?
Hysteresis is adjusted by connecting external resistors between the REF, HYST, and V- pins. Connecting HYST directly to REF disables hysteresis.
What is the input common-mode voltage range?
The input common-mode voltage range extends from the negative supply rail (V-) to within 1.3V of the positive supply rail (V+).
