ADC0800 Datasheet, PDF (1/10 Pages) National Semiconductor (TI) – ADC0800 8-Bit A/D Converter

ADC0800 8-Bit A D Converter
General Description
The ADC0800 is an 8-bit monolithic A D converter using P-
channel ion-implanted MOS technology It contains a high
input impedance comparator 256 series resistors and ana-
log switches control logic and output latches Conversion is
performed using a successive approximation technique
where the unknown analog voltage is compared to the re-
sistor tie points using analog switches When the appropri-
ate tie point voltage matches the unknown voltage conver-
sion is complete and the digital outputs contain an 8-bit
complementary binary word corresponding to the unknown
The binary output is TRI-STATE to permit bussing on com-
mon data lines
The ADC0800PD is specified over b55 C to a125 C and
the ADC0800PCD is specified over 0 C to 70 C
Block Diagram
Features
Y _{Low cost}
Y g_{5V 10V input ranges}
Y _{No missing codes}
Y _{Ratiometric conversion}
Y _{TRI-STATE outputs}
Y _Fast
Y _{Contains output latches}
Y _{TTL compatible}
Y _{Supply voltages}
Y _Resolution
Y _Linearity
Y _{Conversion speed}
Y _{Clock range}
February 1995
T_Ce50 ms
5 V_DC and b12 V_DC
8 bits
g1 LSB
40 clock periods
50 to 800 kHz
(00000000e afull-scale)
TRI-STATE is a registered trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation TL H 5670
TL H 5670 – 1
RRD-B30M115 Printed in U S A