ADC0820

Features:

Built-in track-and-hold function
No missing codes
No external clocking
Single supply-5 VDC
Easy interface to all microprocessors, or operates stand-alone
Latched TRI-STATE® output
Logic inputs and outputs meet both MOS and T²L voltage level specifications
Operates ratiometrically or with any reference value
equal to or less than VCC
0V to 5V analog input voltage range with single 5V supply
No zero or full-scale adjust required
Overflow output available for cascading
0.3" standard width 20-pin DIP
20-pin molded chip carrier package
20-pin small outline package
20-pin shrink small outline package (SSOP)




Pinout






Specifications

Resolution	8 bits
Input Channels	1
Interface Type	Parallel
Differential Input	No
Max KSample Rate	667 ksps
Min Supply Voltage	4.5 Volt
Max Supply Voltage	8 Volt
Reference Source	External
Temperature Min	-40 deg C
Temperature Max	85 deg C
Power Down	No
Input Sample/Hold	Yes
Special Features	Total unadjusted error is +/-0.5 LSB
Data Converter Type	ADC
Max Sample Rate	0.667 MSPS
View Using Catalog

Supply Voltage (V_CC) 10V
Logic Control Inputs −0.2V to V_CC +0.2V
Voltage at Other Inputs and Output −0.2V to V_CC +0.2V
Storage Temperature Range −65˚C to +150˚C
Package Dissipation at TA = 25˚C875 mW
Input Current at Any Pin (Note 5) 1 mA
Package Input Current (Note 5) 4 mA
ESD Susceptability (Note 9) 1200V
Lead Temp. (Soldering, 10 sec.)
Dual-In-Line Package (plastic)260˚C




Description

By using a half-flash conversion technique, the 8-bit ADC0820 CMOS A/D offers a 1.5 µs conversion time and dissipates only 75 mW of power. The half-flash technique consists of 32 comparators, a most significant 4-bit ADC and a least significant 4-bit ADC. The input to the ADC0820 is tracked and held by the input sampling circuitry eliminating the need for an external sample-and-hold for signals moving at less than 100 mV/µs. For ease of interface to microprocessors, the ADC0820 has been designed to appear as a memory location or I/O port without the need for external interfacing logic.