MAX9925(2018) Просмотр технического описания (PDF) - Maxim Integrated

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MAX9925
(Rev.:2018)

Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold

Maxim Integrated 

MAX9924–MAX9927

Variable Reluctance Sensor Interfaces with

Differential Input and Adaptive Peak Threshold

Absolute Maximum Ratings

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

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.

Package Thermal Characteristics (Note 1)

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

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 http://www.maximintegrated.com/thermal-tutorial.

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)

PARAMETER

POWER SUPPLY

Operating Supply Range

Supply Current

SYMBOL

CONDITIONS

VCC

(Note 3)

MAX9924/MAX9925

ICC

MAX9926/MAX9927

MIN TYP MAX UNITS

4.5

5.5

V

2.6

5

mA

4.7

10

Power-On Time

PON

VCC > VUVLO = 4.1V, step time for

VCC ~ 1µs

INPUT OPERATIONAL AMPLIFIER (MAX9925/MAX9927)

Input Voltage Range

IN+, IN-

Guaranteed by CMRR

Input Offset Voltage

VOS-OA

Temperature drift

Input Bias Current

Input Offset Current

Common-Mode Rejection Ratio

Power-Supply Rejection Ratio

Output Voltage Low

IBIAS

IOFFSET

CMRR

PSRR

VOL

(Note 4)

(Note 4)

From VCM = 0 to VCC

MAX9925

MAX9927

IOL = 1mA

Output Voltage High

VOH

IOH = -1mA

30

150

µs

0

VCC

V

5

µV/°C

0.5

3

mV

0.1

6

nA

0.05

2

nA

75

102

dB

88

105

dB

77

94

0.050

V

VCC

-0.050

V

Recovery Time from Saturation

tSAT

To 1% of the actual VOUT after output

saturates

1.2

µs

Gain-Bandwidth Product

Slew Rate

Charge-Pump Frequency

GBW

SR

fCP

1.4

MHz

2.3

V/µs

1.3

MHz

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