MAX9924 datasheet(2/23 Pages) MAXIM

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Variable Reluctance Sensor Interfaces with

Differential Input and Adaptive Peak Threshold

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = 5V, VGND = 0V, MAX9925/MAX9927 gain setting = 1V/V, Mode A1, VBIAS = 2.5V, VPULLUP = 5V, RPULLUP = 1kΩ, CCOUT =

50pF. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)

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.

VCC to GND .............................................................-0.3V to + 6V

All Other Pins..............................................-0.3V to (VCC + 0.3V)

Current into IN+, IN-, IN_+, IN_-.......................................±40mA

Current into All Other Pins ................................................±20mA

Output Short-Circuit (OUT_, OUT) to GND.............................10s

Continuous Power Dissipation (TA = +70°C) (Note 1)

10-Pin µMAX (derate 8.8mW/°C above +70°C) ........707.3mW

16-Pin QSOP (derate 9.6mW/°C above +70°C)........771.5mW

Operating Temperature Range .........................-40°C to +125°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Soldering Temperature (reflow) .......................................+260°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLY

Operating Supply Range

VCC

(Note 3)

4.5

5.5

MAX9924/MAX9925

2.6

Supply Current

ICC

MAX9926/MAX9927

4.7

Power-On Time

PON

VCC > VUVLO = 4.1V, step time for VCC

~ 1µs

150

µs

INPUT OPERATIONAL AMPLIFIER (MAX9925/MAX9927)

Input Voltage Range

IN+, IN-

Guaranteed by CMRR

VCC

Temperature drift

µV/

°C

Input Offset Voltage

VOS-OA

0.5

Input Bias Current

IBIAS

(Note 4)

0.1

Input Offset Current

IOFFSET

(Note 4)

0.05

Common-Mode Rejection Ratio

CMRR

From VCM = 0 to VCC

102

MAX9925

105

Power-Supply Rejection Ratio

PSRR

MAX9927

Output Voltage Low

VOL

IOL = 1mA

0.050

Output Voltage High

VOH

IOH = -1mA

VCC -

0.050

Recovery Time from Saturation

tSAT

To 1% of the actual VOUT after output

saturates

1.2

µs

Gain-Bandwidth Product

GBW

1.4

MHz

Slew Rate

2.3

V/µs

Charge-Pump Frequency

fCP

1.3

MHz

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer

board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

µMAX

Junction-to-Ambient Thermal Resistance (

θJA) ......113.1°C/W

Junction-to-Case Thermal Resistance (

θJC) ................42°C/W

QSOP

Junction-to-Ambient Thermal Resistance (

θJA) ......103.7°C/W

Junction-to-Case Thermal Resistance (

θJC) ................37°C/W

PACKAGE THERMAL CHARACTERISTICS (Note 1)

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