MAXIM MAX9647, MAX9648 User Manual

EVALUATION KIT AVAILABLE

19-5968; Rev 1; 1/12

MAX9647/MAX9648

General-Purpose, Low-Voltage,

Tiny Pack Comparators

General Description

The MAX9647/MAX9648 comparators are drop-in, pin-forpin compatible replacements for the LMX331/LMX331H. The MAX9648 has the added benefit of internal hysteresis to provide noise immunity, preventing output oscillations 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, competitive 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

Features

S Guaranteed +1.8V to +5.5V Performance

S -40NC to +125NC Automotive Temperature Range

S Low Supply Current (60µA/Channel at

= +5.0V)

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.

�� Maxim Integrated Products 1

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.

MAX9647/MAX9648

General-Purpose, Low-Voltage,

Tiny Pack Comparators

ABSOLUTE MAXIMUM RATINGS

Supply Voltage (VDD to VSS)...................................-0.3V to +6V

All Other Pins ................................. (VSS - 0.3V) to (VDD + 0.3V)

Continuous Power Dissipation (TA = +70NC)

SC70 (derate 3.1 mW/NC above +70NC)......................247mW

SOT23 (derate 7.1 mW/NC above +70NC) ...................571mW

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

DC ELECTRICAL CHARACTERISTICS—2.7V OPERATION

(VDD = 2.7V, VSS = 0V, VCM = 0V, RL = 5.1kI connected to VDD, typical values are at TA = +25NC, unless otherwise noted. Boldface limits apply at the defined temperature extremes.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Offset Voltage V

Input Voltage Hysteresis V

Input Offset Voltage Average Temperature Drift

Input Bias Current I

Input Offset Current I

Input Voltage Range V

Voltage Gain A

Output Saturation Voltage V

Output Sink Current I

Supply Current I

Output Leakage Current

HYST

TCV

SAT

MAX9648 only 2 mV

TA = +25NC Q0.0003 Q250

TA = -40NC to +85NC

TA = -40NC to +125NC

TA = +25NC Q0.0003 Q50

TA = -40NC to +85NC

TA = -40NC to +125NC

MAX9647 only 500 V/mV

P 1mA

SINK

VO P 1.5V

(Note 2) 52 100

TA = +25NC

TA = -40NC to +125NC

Operating Temperature Range ........................ -40NC to +125NC

Junction Temperature .....................................................+150NC

Storage Temperature Range ............................ -65NC to +150NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+260NC

0.4 7 mV

1.5

±400

±150

-0.1

2.0

25 mV

5 16 mA

0.005

FV/NC

FATA = -40NC to +85NC

AC ELECTRICAL CHARACTERISTICS—2.7V OPERATION

(VDD = 2.7V, VSS = 0V, VCM = 0V, RL = 5.1kI connected to VDD, typical values are at TA = +25NC, unless otherwise noted. Boldface limits apply at the defined temperature extremes.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Propagation Delay Output High to Low (Note 3)

Propagation Delay Output Low to High (Note 3)

�� Maxim Integrated Products 2

PHL

PLH

Input overdrive = 10mV 70 Input overdrive = 100mV 50 Input overdrive = 10mV 115 Input overdrive = 100mV 100

MAX9647/MAX9648

General-Purpose, Low-Voltage,

Tiny Pack Comparators

DC ELECTRICAL CHARACTERISTICS–5.0V OPERATION

(VDD = 5V, VSS = 0V, VCM = 0V, RL = 5.1kI connected to VDD, typical values are at TA = +25NC, unless otherwise noted. Boldface limits apply at the defined temperature extremes.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

TA = +25NC

Input Offset Voltage V

Input Voltage Hysteresis MAX9648 only 2 mV Input Offset Voltage Average

Temperature Drift

Input Bias Current I

Input Offset Current I

Input Voltage Range V

Voltage Gain A

Output Saturation Voltage V

Output Sink Current I

Supply Current (Note 2) I

Output Leakage Current

TCV

SAT

TA = -40NC to +85NC

TA = -40NC to +125NC

TA = +25NC Q0.007 Q250

TA = -40NC to +85NC

TA = -40NC to +125NC

TA = +25NC Q0.007 Q50

TA = -40NC to +85NC

TA = -40NC to +125NC

MAX9647 only 20 500 V/mV

TA = +25NC

P 4mA

SINK

VO P 1.5V

TA = +25NC

TA = -40NC to +125NC

TA = +25NC

TA = -40NC to +125NC

TA = -40NC to +85NC

TA = -40NC to +125NC

10 35 mA

0.4 7

1.5

±400

±150

-0.1

4.2

120 400

60 120

0.005

700

150

170

FV/NC

FATA = -40NC to +85NC

AC ELECTRICAL CHARACTERISTICS–5.0V OPERATION

(VDD = 5V, VSS = 0V, VCM = 0V, RL = 5.1kI connected to VDD, typical values are at TA = +25NC, unless otherwise noted. Boldface limits apply at the defined temperature extremes.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Propagation Delay Output High to Low (Note 3)

Propagation Delay Output Low to High (Note 3)

�� Maxim Integrated Products 3

PHL

PLH

Input overdrive = 10mV 70 Input overdrive = 100mV 50 Input overdrive = 10mV 110 Input overdrive = 100mV 100

MAX9647/MAX9648

General-Purpose, Low-Voltage,

Tiny Pack Comparators

DC ELECTRICAL CHARACTERISTICS—1.8V OPERATION

(VDD = 1.8V, VSS = 0V, VCM = 0V, RL = 5.1kI connected to VDD, typical values are at TA = +25NC, unless otherwise noted. Boldface limits apply at the defined temperature extremes.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Offset Voltage V

Input Voltage Hysteresis MAX9648 only 2 mV

Input Offset Voltage Average Temperature Drift

Input Bias Current I

Input Offset Current I

Input Voltage Range V

Output Saturation Voltage V

Power-Supply Rejection Ratio PSRR VDD = 1.8V to 5.5V 60 90 dB

Output Sink Current I

Supply Current I

Output Leakage Current 0.001

TCV

SAT

P 1mA

SINK

VO P 1.5V

(Note 2) 50 100

0.4 5 mV

1.5

0.0003 nA

-0.1 1

56 mV

6.4 mA

FV/NC

AC ELECTRICAL CHARACTERISTICS—1.8V OPERATION

(VDD = 1.8V, VSS = 0V, VCM = 0V, RL = 5.1kI connected to VDD, typical values are at TA = +25NC, unless otherwise noted. Boldface limits apply at the defined temperature extremes.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Propagation Delay Output High to Low (Note 3)

Propagation Delay Output Low to High (Note 3)

Note 1: All devices are production tested at TA = +25NC. All temperature limits are guaranteed by design. Note 2: Supply current when output is high. Note 3: Input overdrive is the overdrive voltage beyond the offset and hysteresis-determined trip points.

PHL

PLH

Input overdrive = 10mV 70 Input overdrive = 100mV 60 Input overdrive = 10mV 120 Input overdrive = 100mV 110

�� Maxim Integrated Products 4

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