ADC0800

Features:

Low cost
No missing codes
Ratiometric conversion
TRI-STATE outputs
Contains output latches
TTL compatible
Supply voltages                                    5 VDC and -12 VDC
Resolution                                             8 bits                                    
Conversion speed                                40 clock periods
Clock range                                          50 to 800 kHz

Specifications

Supply Voltage (V_DD)                                              V_SS-22V
Supply Voltage (V_GG)                                              V_SS-22V
Voltage at Any Input                          V_SS+0.3V to V_SS-22V
Input Current at Any Pin (Note 2)                               5 mA
Package Input Current (Note 2)                                20 mA


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 analog switches, control logic and output latches. Conversion is performed using a successive approximation technique where the unknown analog voltage is compared to the resistor tie points using analog switches. When the appropriate 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-STATEÉ to permit bussing on common data lines.

The ADC0800PD is specified over b55§Cto a125§C and the ADC0800PCD is specified over 0§Cto70§C.