MP7645B データシートの表示（PDF） - Exar Corporation

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MP7645B

CMOS Buffered Multiplying 12-Bit Digital-to-Analog Converter

Exar Corporation 

MP7645B

ELECTRICAL CHARACTERISTICS (CONT’D)

Parameter

25°C

Symbol Min Typ Max

POWER SUPPLY

Tmin to Tmax

Min Max Units

Test Conditions/Comments

Functional Voltage Range5

Supply Current

SWITCHING

CHARACTERISTICS2, 4

VDD

5

IDD

15

5

15 V

1

1 mA

All digital inputs = 0 V or all = 5 V

Chip Select to Write Set-Up Time

tCS

180

ns

Chip Select to Write Hold Time

tCH

0

ns

Write Pulse Width

tWR

100

ns

Data Valid to Write Set-Up Time

tDS

100

ns

Data Valid to Write Hold Time

tDH

10

ns

NOTES:

1 Full Scale Range (FSR) is 10V for unipolar mode.

2 Guaranteed but not production tested.

3 Digital input levels should not go below ground or exceed the positive supply voltage, otherwise damage may occur.

4 See timing diagram.

5 Specified values guarantee functionality. Refer to other parameters for accuracy.

Specifications are subject to change without notice

ABSOLUTE MAXIMUM RATINGS (TA = +25°C unless otherwise noted)1, 2, 3

VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +17 V

Digital Input Voltage to GND (2) . GND –0.5 to VDD +0.5 V

IOUT1, IOUT2 to GND . . . . . . . . . . . GND –0.5 to VDD +0.5 V

VREF to GND (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +25 V

VRFB to GND (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +25 V

AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.5 V

(Functionality Guaranteed +0.5 V)

Storage Temperature . . . . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature (Soldering, 10 seconds) . . . . . . +300°C

Package Power Dissipation Rating to 75°C

CDIP, PDIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 950mW

Derates above 75°C . . . . . . . . . . . . . . . . . . . . . 13mW/°C

NOTES:

1 Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a

stress rating only and functional operation at or above this specification is not implied. Exposure to maximum rating

conditions for extended periods may affect device reliability.

2 Any input pin which can see a value outside the absolute maximum ratings should be protected by Schottky diode clamps

(HP5082-2835) from input pin to the supplies.

3 GND refers to AGND and DGND.

Rev. 2.00

4

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