MP7628 查看數據表（PDF） - Exar Corporation

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MP7628

5 V CMOS Quad Multiplying 8-Bit Digital-to-Analog Converter

Exar Corporation 

MP7628

INTERFACE LOGIC INFORMATION

DAC Selection: All DAC latches share a common 8-bit input

port. The control inputs DS1, DS2, A/B select which DAC can

accept data from the input port.

Mode Selection: Inputs DS and R/W control the operating

mode of the selected DAC. See Mode Selection Table on the

previous page.

Write Mode: When DS and R/W are both low the selected

DAC is in the write mode. The input data latches of the selected

DAC are transparent and its analog output responds to activity

on DB0-DB7.

Hold Mode: The selected DAC latch retains the data which

was present on DB0-DB7 just prior to DS and R/W assuming a

high state. Both analog outputs remain at the values corre-

sponding to the data in their respective latches.

Read Mode: When DS is low and R/W is high, the selected

DAC is in the read mode and the data held in the appropriate

latch is outputed to the data bus.

APPLICATION NOTES

Refer to Section 8 for Applications Information

Rev. 2.00

7

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