MP7613 查看數據表（PDF） - Exar Corporation

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MP7613

Octal 12-Bit DAC Array™ D/A Converter with Output Amplifier and Parallel Data/Address µP Control Logic

Exar Corporation 

MP7613

ELECTRICAL CHARACTERISTICS (CONT’D)

NOTES:

1 Guaranteed; not tested.

2 Specified values guarantee functionality.

3 Digital inputs should not go below digital GND or exceed DVDD supply voltage.

4 See Figures 1, 2, and 3. All digital input signals are specified with tR = tF = 10 ns 10% to 90% and timed from a 50% voltage level.

5 For power supply values < 2VREF, the output swing is limited as specified in Analog Outputs.

6 Digital feedthrough and channel-to-channel crosstalk are heavily dependent on the board layout and environment.

Specifications are subject to change without notice

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

VCC to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +16.5 V

VEE to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –16.5 V

DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6.5 V

VREF to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7.0 V

Analog Outputs & Inputs

Infinite Shorts to VCC, VEE, DVDD, AGND and DGND

(provided that power dissipation of the package spec is not

exceeded)

AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1 V

(Functionality guaranteed for 0.5 V only)

Digital Input & Digital Output Voltage to:

DVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +.5 V

DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –.5 V

Operating Temperature Range . . . . . . . . . . –40°C to +85°C

Maximum Junction Temperature . . . . . . . . . . . . . . . . . 150°C

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

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

Package Power Dissipation Rating to 75°C

PQFP, PGA, PLCC . . . . . . . . . . . . . . . . . . . . . . 800mW

Derates above 75°C . . . . . . . . . . . . . . . . . . . 11mW/°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. All inputs have protection diodes which will protect the device from short

transients outside the supplies of less than 100mA for less than 100µs.

APPLICATION NOTES

Refer to Section 8 for Applications Information

NOTE: When using these DACs to drive remote devices, the accuracy of the output can be improved by utilizing a remote analog

ground connection. The difference between the DGND and AGND should be limited to 300 mV to assure normal operation. If there

is any chance that the AGND to DGND can be greater than 1 V, we recommend two back-to-back diodes be used between DGND

and AGND to clamp the voltage and prevent damage to the DAC. Using a buffer between the remote ground location and AGND may

help reduce noise induced from long lead or trace lengths.

Rev. 2.00

6

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