LMP7300

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Micropower Precision Comparator and Precision Reference with Adjustable Hysteresis

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Product details

Parameters

Number of channels (#) 1 Output type Open-collector Propagation delay time (µs) 7.7 Vs (Max) (V) 12 Vs (Min) (V) 2.7 Vos (offset voltage @ 25 C) (Max) (mV) 0.75 Iq per channel (Typ) (mA) 0.01 Input bias current (+/-) (Max) (nA) 3 Rail-to-rail No Rating Catalog Operating temperature range (C) -40 to 125 Features Hysteresis, Internal Reference VICR (Max) (V) 11.1 VICR (Min) (V) 1 open-in-new Find other Comparators

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Comparators

Features

  • (For VS = 5 V, typical unless otherwise noted)
  • Supply Current 13 µA
  • Propagation Delay 4 µs
  • Input Offset Voltage 0.3 mV
  • CMRR 100 dB
  • PSRR 100 dB
  • Positive and Negative Hysteresis Control
  • Adjustable Hysteresis 1 mV/mV
  • Reference Voltage 2.048 V
  • Reference Voltage Accuracy 0.25%
  • Reference Voltage Source Current 1 mA
  • Wide Supply Voltage Range 2.7 V to 12 V
  • Operating Temperature Range Ambient –40°C to
    125°C
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Description

The LMP7300 is a combination comparator and reference with ideal specifications for precision threshold detecting. The precision 2.048-V reference comes with a 0.25% maximum error. The comparator features micropower (35 µW), low offset voltage (0.75-mV maximum), and independent adjustable positive and negative hysteresis.

Hysteresis control for the comparator is accomplished through two external pins. The HYSTP pin sets the positive hysteresis, and the HYSTN pin sets the negative hysteresis. The comparator design isolates the VIN source impedance and the programmable hysteresis components. This isolation prevents any undesirable interaction allowing the IC to maintain a precise threshold voltage during level detection.

The combination of low offset voltage, external hysteresis control, and precision voltage reference provides an easy-to-use micropower precision threshold detector.

The LMP7300 open collector output is ideal for mixed-voltage system designs. The output voltage upper rail is unconstrained by VCC and can be pulled above VCC to a maximum of 12 V. The LMP7300 is a member of the LMP precision amplifier family.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet LMP7300 Micropower Precision Comparator and Precision Reference With Adjustable Hysteresis datasheet (Rev. G) Jul. 30, 2015
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
User guides LMP7300 Single Precision Comparator w/ Reference Evaluation Boards (SOIC & MSOP) (Rev. C) May 01, 2013
Technical articles Op Amps used as Comparators—is it okay? Mar. 14, 2012

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SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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