BU2508FV,BU2507FV

Technical Note

4/8

www.rohm.com

2009.06 - Rev.A

© 2009 RzOHM Co., Ltd. All rights reserved.

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Terminal Description

No

Terminal

name

Analog /

Digital

I/O

Description of terminal

Equivalent

circuit

1

VSS

Analog

-

DA converter lower standard voltage (VrefL) input terminal

6

2

AO2

Analog

O

10bit D/A output (CH2)

4

3

AO3(TEST1)

Analog

O

10bit D/A output (CH3) (BU2508FV : test terminal)

4

4

Reset

Digital

I

All ch analog output L fixed

2

5

AO4(TEST2)

Digital

I

10bit D/A output (CH4) (BU2508FV : test terminal)

4

6

AO5 (AO3)

Analog

O

10bit D/A output (CH5) (BU2508FV : 10bit D/A output (CH3))

4

7

VDD

Analog

-

DA converter upper standard voltage (VrefH) input terminal

5

8

VCC

-

-

Power source terminal

-

9

AO6 (AO4)

Analog

O

10bit D/A output (CH6) (BU2508FV : 10bit D/A output (CH4))

4

10

LD

Digital

I

When High level is input to LD terminal, the value of 14bit shift

register is loaded to decoder and D/A output register.

1

11

CLK

Digital

I

Shift clock input terminal. At rise of shift clock, the signal from DI

terminal is input to 14bit shift register.

1

12

DI

Digital

I

Serial data input terminal. Serial data whose data length is 14bit

(address 4bit + data 10bit) is input.

1

13

AO1

Analog

O

10bit D/A output (CH1)

4

14

GND

-

-

GND terminal

-

*In the case of BU2508FV, be sure to open TEST1 and TEST2 terminals.