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ZN429 Schematic ( PDF Datasheet ) - ETC

Teilenummer ZN429
Beschreibung LOW COST 8-BIT D-A CONVERTER
Hersteller ETC
Logo ETC Logo 




Gesamt 7 Seiten
ZN429 Datasheet, Funktion
THIS DOCUMENT IS FOR MAINTENANCE
PURPOSES ONLY AND IS NOT
RECOMMENDED FOR NEW DESIGNS






ZN429 Datasheet, Funktion
ZN429
Fig.6 Bipolar operation - basic circuit
BIPOLAR ADJUSTMENT PROCEDURE
BIPOLAR LOGIC CODING
(i) Set all bits to OFF (LOW) and adjust OFFSETuntil the
amplifier output reads -FULL-SCALE.
Input Code
(ii) Set all bits ON (HIGH) and adjust gain until the
(Offset Binary)
amplifier reads +(FULL-SCALE - 1LSB).
BIPOLAR SETTING UP POINTS
11111111
11111110
Input Range,
± FS
LSB
-FS +(FS -
1LSB)
11000000
10000001
10000000
±5V 39.1 mV -5.0000V +4.9609V
01111111
±10V
78.1mV -10.0000V 9.9219V
01000000
00000001
00000000
1LSB = 2FS
256
Analog Output
(Nominal Value)
+(FS - 1LSB)
+(FS - 2 LSB)
+1/2 FS
+ 1LSB
0
-1 LSB
-1/2 FS
-(FS - 1LSB)
-FS
Fig.7 Bipolar operation - component values

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