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TDC1044AN9C fiches techniques PDF

Fairchild Semiconductor - Monolithic Video A/D Converter 4-Bit/ 25 Msps

Numéro de référence TDC1044AN9C
Description Monolithic Video A/D Converter 4-Bit/ 25 Msps
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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TDC1044AN9C fiche technique
TDC1044A
Monolithic Video A/D Converter
4-Bit, 25 Msps
www.fairchildsemi.com
Features
• 4-bit resolution
• 1/4 LSB non-linearity
• Sample-and-hold circuit not required
• 25 Msps conversion rate
• Selectable output format
• 16-lead DIP and 20-lead PLCC packages
Applications
• Digital communications
• Video special effects
• Radar data conversion
• Medical imaging
Description
The TDC1044A is a 25 Msps (Megasample per second) full-
parallel analog-to-digital converter, capable of converting an
analog signal with full-power frequency components up to
12.5 MHz into 4-bit digital words. Use of a sample-and-hold
circuit is not necessary for operation of the TDC1044A. All
digital inputs and outputs are TTL compatible.
The TDC1044A consists of 15 latching comparators, encod-
ing logic, and an output register. A single convert signal
controls the conversion operation. Output formats are
true/inverted binary or true/inverted offset two’s complement
codes.
Block Diagram
NMINV
NLINV
CONV
VIN
RT
R1
R
R
R
RM
R
R
R
R/2
RB
REFERENCE
RESISTOR
CHAIN
1
2
8
14
15
DIFFERENTIAL
COMPARATORS
(15)
15 TO 4
DECODER
LATCH
4
D1–D4
65-1044A-01
Rev. 1.1.2

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