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ADC1205 fiches techniques PDF

National Semiconductor - 12-Bit Plus Sign mP Compatible A/D Converters

Numéro de référence ADC1205
Description 12-Bit Plus Sign mP Compatible A/D Converters
Fabricant National Semiconductor 
Logo National Semiconductor 





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ADC1205 fiche technique
June 1994
ADC1205 ADC1225 12-Bit Plus Sign
mP Compatible A D Converters
General Description
The ADC1205 and ADC1225 are CMOS 12-bit plus sign
successive approximation A D converters The 24-pin
ADC1205 outputs the 13-bit data result in two 8-bit bytes
formatted high-byte first with sign extended The 28-pin
ADC1225 outputs a 13-bit word in parallel for direct inter-
face to a 16-bit data bus
Negative numbers are represented in 2’s complement data
format All digital signals are fully TTL and MOS compatible
A unipolar input (0V to 5V) can be accommodated with a
single 5V supply while a bipolar input (b5V to a5V) re-
quires the addition of a 5V negative supply
The ADC1205C and ADC1225C have a maximum non-lin-
earity of 0 0224% of Full Scale
Key Specifications
Y Resolution 12 bits plus sign
Y Linearity Error g1 LSB
Y Conversion Time 100 ms
Features
Y Compatible with all mPs
Y True differential analog voltage inputs
Y 0V to 5V analog voltage range with single 5V supply
Y TTL MOS input output compatible
Y Low power 25 mW max
Y Standard 24-pin or 28-pin DIP
Connection and Functional Diagrams
Dual-In-Line Package
Top View
Dual-In-Line Package
TL H 5676–1
Top View
TL H 5676–2
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL H 5676
See Ordering Information
TL H 5676 – 3
RRD-B30M115 Printed in U S A

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