Document
MITSUBISHI
M62381FP
8-BIT 8CH MULTIPLYING D-A CONVERTER WITH BUFFER AMPLIFIERS
DESCRIPTION
The M62381FP is an integrated circuit semiconductor of CMOS structure with 8 channels of built-in 8-bit resolution multiplication type D-A converters. The input data is a easy-to-use 3-wire serial transfer method and it is able to cascading serial use with Do terminal. This device is capable of 4 quadrant multiplication because of built-in inverting type amplifier.
PIN CONFIGURATION (TOP VIEW)
Vo3 Vo2 Vo1 VIN2 VIN1 GND RESET VIN5 VIN6 Vo5 Vo6 Vo7
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
Vo4 VIN3 VIN4 VDD DI VSS Do CLK LD VIN8 VIN7 Vo8
FEATURES
•Digital data transfer method 3-wire 12-bit serial data transfer method(DI,CLK,LD) •High pressure proof(VDD±5V) •Short setting time •Built-in reset terminal,all the buffer amplifier outputs forces zero volts.
APPLICATION
Signal gain control of DISPLAY-MONITOR or CTV. Conversion from digital control data analog control data for form-use and industrial equipment. Automatic adjustment by combination with EEPROM and micro-computer. (replacement of conventional half-fixed resistor.)
Outline 24P2V-A
BLOCK DIAGRAM
DI 20
VDD 21 12-BIT SHIFT RESISTER 18 DECODER 16 7 Do LD RESET
CLK 17
VIN1 GND
5 6 8-BIT D-A CONVERTER 3 Vo1
VIN2
4
CH2
2
Vo2
VIN3
23
CH3
1
Vo3
VIN4 VIN5
22 8
CH4
24 Vo4 Vo5
CH5
10
VIN6
9
CH6
11 Vo6
VIN7 14
CH7
12 Vo7 13 Vo8
VIN8
15
CH8 19 VSS
MITSUBISHI ELECTRIC
( 1 / 5 )
MITSUBISHI
M62381FP
8-BIT 8CH MULTIPLYING D-A CONVERTER WITH BUFFER AMPLIFIERS
EXPLANATION OF TERMINALS
Pin No. 20 18 17 16 3 2 1 24 10 11 12 13 21 19 6 5 4 23 22 8 9 14 15 7 Symbol DI Do CLK LD Vo1 Vo2 Vo3 Vo4 Vo5 Vo6 Vo7 Vo8 VDD VSS GND VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 VIN8 RESET
When RESET terminal level is "H",all D-A output terminal became "0V"
Function Serial data input terminal Serial data output terminal Serial clock input terminal When LD terminal level is "H",latch circuit data is load
8-bit resolution D-A converter output terminal
Analog and digital common power supply terminal Analog negative power supply terminal GND terminal
D-A converter reference input terminal
MITSUBISHI ELECTRIC
( 2 / 5 )
MITSUBISHI
M62381FP
8-BIT 8CH MULTIPLYING D-A CONVERTER WITH BUFFER AMPLIFIERS
DIGITAL DATA FORMAT
LAST LSB FIRST MSB
DAC DATA (1)DAC set up data MSB D7 0 0 0 1 1 1 1 D6 0 0 1 0 0 1 1 D5 0 0 1 0 0 1 1 D4 0 0 D3 0 0 1 0 0 1 1 D2 0 0 1 0 0 1 1 D1 0 0 1 0 0 1 1 LSB D0 0 1 1 0 1 0 1 -VIN
DAC SELECT DATA
D-A output (1/128-1) X VIN (127/128-1) X VIN (128/128-1) X VIN (129/128-1) X VIN (254/128-1) X VIN (255/128-1) X VIN
1 0 0 1 1
(2)DAC select data MSB D11 0 0 0 0 1 1 1 D10 0 0 0 1 0 0 1 D9 0 0 1 1 0 0 1 LSB D8 0 1 0 1 0 1 1 DAC selection Don‘t care ch1 selection ch2 selection ch7 selection ch8 selection Don‘t care Don‘t care
TIMING CHART (MODEL)
MSB DI D11 D10 D9 D1
LSB D0
CLK
LD RESET D-A OUTPUT
MITSUBISHI.