MAX1474 Просмотр технического описания (PDF) - Maxim Integrated

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MAX1474

Miniature Electronically Trimmable Capacitor

Maxim Integrated 

Miniature Electronically Trimmable Capacitor

ABSOLUTE MAXIMUM RATINGS

Supply Voltage, VDD to VSS..................................... -0.3V to +6V

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

RMS Current into Any Pin....................................................50mA

Continuous Power Dissipation (TA = +70°C)

6-Pin SC70 (derate 3.1mW/°C above +70°C) .............245mW

Operating Temperature Range

MAX1474AXT................................................-40°C to +125°C

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

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

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

ELECTRICAL CHARACTERISTICS

(VDD = +5V, VSS = 0, TA = +25°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

GENERAL CHARACTERISTICS

Supply Voltage

Supply Current

2.7

Normal DC operation only, EN, DAT pins

5.5

V

10

µA

Supply Current

During programming at 1MHz

200

µA

CAPACITOR CHARACTERISTICS

Self-Resonant Frequency

SRF

15 DAT pulses

960

MHz

Quality Factor

Absolute Accuracy

Q

f0 = 315MHz

12

±15

%

Capacitance Increments (Note 1)

0.22

pF

Capacitance at 0 DAT Pulses (Note 1)

CMIN

6.4

pF

Capacitance Range (Note 1)

CMAX - CMIN

6.9

pF

Temperature Drift

33

ppm/°C

DIGITAL CHARACTERISTICS

Low-Level Input Voltage

VIL

0.25 x

V

VDD

High-Level Input Voltage

VIH

Input Pulldown Resistor

0.75 x

V

VDD

50

kΩ

Input Leakage Current

TIMING CHARACTERISTICS

200

µA

Maximum Clock Rate on DAT

Minimum DAT High Pulse Width

Minimum Setup Time for DAT

Minimum Data Load Time

Minimum Reset Time

fDAT

tDAT_HIGH

tSETUP

tLOAD

tRESET

25

MHz

20

ns

20

ns

20

ns

20

ns

Note 1: Measurements made at CP with CM = GND.

2 _______________________________________________________________________________________

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