MAX9648

Manufacturer Part NumberMAX9648
DescriptionThe MAX9647/MAX9648 comparators are drop-in, pin-for-pin compatible replacements for the LMX331/LMX331H
ManufacturerMaxim
MAX9648 datasheet
 
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General Description
The MAX9647/MAX9648 comparators are drop-in, pin-for-
pin compatible replacements for the LMX331/LMX331H.
The MAX9648 has the added benefit of internal hyster-
esis to provide noise immunity, preventing output oscilla-
tions even with slow moving input signals.
Advantages of the ICs include low supply voltage, small
package, and low cost. They also offer a wide supply
voltage range, wide operating temperature range, com-
petitive CMRR and PSRR, response time characteristics,
input offset, low noise, output saturation voltage, input
bias current, and RF immunity.
The ICs are available in both 5-pin SC70 and SOT23
packages.
Applications
Mobile Communications
Notebooks and PDAs
Automotive Applications
Battery-Powered Electronics
General-Purpose Portable Devices
General-Purpose Low-Voltage Applications
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For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
E V A L U A T I O N K I T A V A I L A B L E
MAX9647/MAX9648
General-Purpose, Low-Voltage,
Tiny Pack Comparators
S Guaranteed +1.8V to +5.5V Performance
S -40NC to +125NC Automotive Temperature Range
S Low Supply Current (60µA/Channel at
V
= +5.0V)
DD
S Input Common-Mode Voltage Range Includes
Ground
S No Phase Reversal for Overdriven Inputs
S Low Output Saturation Voltage (120mV)
S Internal 2mV Hysteresis (MAX9648)
S 5-Pin SC70 Space-Saving Package
(2.0mm x 2.1mm x 1.0mm)
Ordering Information
appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maxim-ic.com/MAX9647.related.
19-5968; Rev 1; 1/12
Features

MAX9648 Summary of contents

  • Page 1

    ... General Description The MAX9647/MAX9648 comparators are drop-in, pin-for- pin compatible replacements for the LMX331/LMX331H. The MAX9648 has the added benefit of internal hyster- esis to provide noise immunity, preventing output oscilla- tions even with slow moving input signals. Advantages of the ICs include low supply voltage, small package, and low cost ...

  • Page 2

    ... Junction Temperature .....................................................+150NC - 0.3V 0.3V Storage Temperature Range ............................ -65NC to +150NC Lead Temperature (soldering, 10s) ................................+300NC Soldering Temperature (reflow) ......................................+260NC = 5.1kI connected typical values are SYMBOL CONDITIONS MAX9648 only HYST TCV +25NC -40NC to +85NC -40NC to +125NC A T ...

  • Page 3

    ... Maxim Integrated Products 3 General-Purpose, Low-Voltage, Tiny Pack Comparators = 5.1kI connected typical values are SYMBOL CONDITIONS T = +25NC -40NC to +85NC -40NC to +125NC A MAX9648 only TCV +25NC -40NC to +85NC -40NC to +125NC +25NC ...

  • Page 4

    ... Maxim Integrated Products 4 General-Purpose, Low-Voltage, Tiny Pack Comparators = 5.1kI connected typical values are SYMBOL CONDITIONS V OS MAX9648 only TCV ...

  • Page 5

    ... +85° -40°C A 4.0 4.5 5.0 5.5 6.0 = 10mV 1.8V DD 10k 100k 1. 2. 100 125 MAX9647/MAX9648 = +25NC, unless otherwise noted.) A SUPPLY CURRENT vs. SUPPLY VOLTAGE +125° +85° +25° -40° LOW OUT ...

  • Page 6

    ... General-Purpose, Low-Voltage, Tiny Pack Comparators Typical Operating Characteristics (continued) = 10pF, overdrive = 100mV 100 ) PLH T = +25° +85°C A 1000 75 100 125 MAX9647/MAX9648 = +25NC, unless otherwise noted.) A PROPAGATION DELAY vs. TEMPERATURE (V = 100mV) OVERDRIVE 120 100 t 80 PLH t PHL -50 -25 ...

  • Page 7

    ... Maxim Integrated Products 7 General-Purpose, Low-Voltage, Tiny Pack Comparators Typical Operating Characteristics (continued) = 10pF, overdrive = 100mV MAX9647 toc13 MAX9647 toc15 MAX9647 toc17 200mV/div MAX9647/MAX9648 = +25NC, unless otherwise noted.) 500kHz RESPONSE 100mV OVERDRIVE MAX9647 toc14 OUT 400ns/div 100kHz RESPONSE ...

  • Page 8

    ... They require approximately 60FA per comparator with a 5V supply and 52FA with a 2.7V supply. The MAX9648 has 2mV of hysteresis for noise immunity. This significantly reduces the chance of output oscilla- tions even with slow moving input signals. The ICs are ideal for automotive applications because they oper- ate from -40NC to +125NC ...

  • Page 9

    ... For slow moving input signals (rise time > 1ms), use a 1nF capacitor between IN+ and IN- to reduce high frequency noise REF V Figure 2. Adding Hysteresis with External Resistors MAX9647/MAX9648 . In this example, choose 50mV. HYST (R2/(R1 + R2))V HYST OUT(HIGH) 0.050V = 5(1000/(R1 + 1000))V = 2.525V, and V TH /(R1 + R2) ...

  • Page 10

    ... Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE PIN- TOP TYPE PACKAGE MARK 5 SC70 5 SOT23 5 SC70 +AUS 5 SOT23 +AFLM 5 SC70 +AUT 5 SOT23 +AFLN MAX9647/MAX9648 Package Information PACKAGE OUTLINE CODE NO. PATTERN NO. X5+1 21-0076 U5+1 21-0057 LAND 90-0188 90-0174 ...

  • Page 11

    ... Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2012 Maxim Integrated Products © MAX9647/MAX9648 General-Purpose, Low-Voltage, Tiny Pack Comparators DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc. ...