MB40968V Просмотр технического описания (PDF) - Fujitsu

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MB40968V

2-Channel 8-BIT D/A Converter

Fujitsu 

MB40968/40968V

s PIN DESCRIPTION

Pin Number

25 to 28

1 to 4

6 to 13

5

14

24

19, 23

15

21

Symbol

A1 to A8

B1 to B8

CLKA

CLKB

VCCD

VCCA

D-GND

A-GND

18

VRIN

MB40968

VROUT

17

MB40968V

VROUT

16

COMP

22

AOUT

20

BOUT

I/O

Descriptions

I

A-channel Digital Signal Inputs: A1 (MSB), A8 (LSB)

I

B- channel Digital Signal Inputs: B1 (MSB), B8 (LSB)

I

A-channel Clock Input

I

B-channel Clock Input

— Power Supply for Digital Circuit

— Power Supply for Analog Circuit, two pins (19,23) should be used.

— Ground for Digital Circuit

— Ground for Analog Circuit

Terminal for reference voltage input.

Zero scale voltage of analog output is specified applying any voltage to

I

this terminal.

Input reference voltage should be 2.7 to 4.3V and,

VCCA – VRIN ≤ 2.2V

Terminal for reference voltage output by resistance-type potential

O

divider.

Analog output of “VCCA to 3/5 × VCCA” is supplied connecting this

terminal with VRIN terminal.

Terminal for reference voltage output consists of Band Gap reference.

O

This terminal supplies the voltage of “VCCA to VCCA – 2V”.

2V output is maintained connecting this terminal with VRIN, even if the

power supply fluctuates frequently.

Terminal for phase compensation capacitance;

— Capacitance of 1 µF or more should be inserted between COMP and A-

GND.

O A-channel Analog Signal Output

O B-channel Analog Signal Output

3

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