MB88141 datasheet(4/20 Pages) FUJITSU

No. de pieza	MB88141

Descripción Electrónicos	D/A Converter for Digital Tuning (With Built-in OP Amp and I/O Expander)

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Fabricante Electrónico	FUJITSU [Fujitsu Component Limited.]

Página de inicio	http://edevice.fujitsu.com/fmd/en/index.html

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MB88141

4

s

s PIN DESCRIPTIONS

*1: The MOD and CS0-CS2 pins should be used with fixed level input.

*2: Use particular caution in handling the SDA and SCL pins. These pins have no transistor protection against VCC

voltage and therefore have weaker anti-static characteristics than other pins.

*3: When using the I/O expander function together with the D/A converter function, take care that D/A converter

output precision is within a range that will not affect overall system operation.

Pin no.

Symbol

I/O

Description

21

SDA

BUS

I2C bus data input/output pin (hysteresis input). *2

Outputs the acknowledge signal.

20

SCL

I

I2C bus shift clock input pin (hysteresis input). *2

19

MOD

I

D/A converter and I/O expander mode switching pin. *1, *3

Input “L” to operate as a D/A converter, “H” to operate as I/O expander and

D/A converter.

16

17

18

CS0

CS1

CS2

I

Lower 3 bits of the slave address setting pins. *1

This allows up to eight MB88141 chips to be used on the same bus line.

1

2

3

4

AO1

AO2

AO3

AO4

O

8-bit D/A output with OP Amp. *3

5

6

7

8

9

10

11

12

D7/AO5

D6/AO6

D5/AO7

D4/AO8

D3/AO9

D2/AO10

D1/AO11

D0/AO12

I/O

8-bit D/A output with OP Amp. *3

In I/O expander operation, these pins function as parallel data input/output

pins.

13

VCC



Power supply pin for digital circuits and OP Amp.

24

GND



GND pin for digital circuits and OP Amp.

22

VDD1



Reference power supply pin for D/A converter (H). AO1 to AO4.

23

VSS1



Reference power supply pin for D/A converter (L). AO1 to AO4.

15

VDD2



Reference power supply pin for D/A converter (H). AO5 to AO12.

14

VSS2



Reference power supply pin for D/A converter (L). AO5 to AO12.

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