TMC1175A Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – Video A/D Conveter

TMC1175A
Video A/D Converter
8 bit, 40 Msps
Features
• 8-Bit resolution
• 40 Msps conversion rate
• Low power: 100mW at 20 Msps
• Integral track/hold
• Integral and differential linearity error 0.5 LSB
• Single or dual +5 Volt supplies
• Differential phase 0.5 degree
• Differential gain 1.5%
• Three-state TTL/CMOS-compatible outputs
• Low cost
Applications
• Video digitizing
• VGA and CCD digitizing
• LCD projection panels
• Image scanners
• Personal computer video boards
• Multimedia systems
• Low cost, high speed data conversion
www.cadeka.com
Description
The TMC1175A analog-to-digital (A/D) converter employs
a two-step flash architecture to convert analog signals into
8-bit digital words at sample rates of up to 40 Msps
(Megasamples per second). An integral Track/Hold circuit
delivers excellent performance on signals with full-scale fre-
quency components up to 12 MHz. Innovative architecture
and submicron CMOS technology limit typical power dissi-
pation to 100 mW.
Power may be derived from either single or dual +5V
supplies. Internal voltage reference resistors allow self-bias
operation. Input capacitance is very low, simplifying or
eliminating input driving amplifiers. All digital three-state
outputs are TTL- and CMOS-compatible.
The TMC1175A is available in 24-lead plastic SOIC, and
28-lead J-lead PLCC packages. Performance specifications
are guaranteed from -20°C to 75°C.
Block Diagram
V_IN
VR+
R_T
R_B
VR–
Track/
Hold
CONV
Coarse
Quantizer
Reference
Matrix
Fine
Quantizer
Digital
Error-
Corrector
D_7-0
OE
24453A
REV. 1.3.3 2/28/02