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MB40C238

30MHz 8-bit A/D converter

Fujitsu 

MB40C238

s PIN DESCRIPTION

Pin No.

5, 19, 22

17

1, 4, 7, 23

8

9, 10, 11, 12,

13, 14, 15, 16

18

24

21

20

3

6

2

Symbol

AVDD

DVDD

AVSS

DVSS

D7 to D0

CLK

VINA

VRTC

VRT

VRB

CE

OE

Description

Analog power supply (+3.0 V)

Digital power supply (+3.0 V)

Analog power supply ground pin (0 V)

Digital power supply ground pin (0 V)

Digital output pin (D7: MSB, D0: LSB)

Clock input pin

A/D converter analog input pin

Input range is VRB to VRT (0 to 1.5 V: standard)

VRT voltage adjustment amp input pin (VRTC: 1.5 V is output when opened.)

Reference voltage output pin on top side.

The voltage fed to VRTC is output. (1.5 V: standard)

Reference voltage input pin on bottom side (0 V: standard)

Input pin for toggling standby function.

Input high signal brings the ADC and reference voltage circuit.

Input pin for toggling output high impedance function.

Input high signal brings the ADC output high impedance state.

Note: The values in parentheses are standard.

3

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