Datasheet
ADC0820-N
www.ti.com
SNAS529C –JUNE 1999–REVISED MARCH 2013
ADC0820-N 8-Bit High Speed µP Compatible A/D Converter with Track/Hold Function
Check for Samples: ADC0820-N
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FEATURES
KEY SPECIFICATIONS
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• Built-In Track-and-Hold Function
• Resolution: 8 Bits
• No Missing Codes • Conversion Time
• No External Clocking – 2.5 µs Max (RD Mode)
• Single Supply—5 V
DC
– 1.5 µs Max (WR-RD Mode)
• Easy Interface to All Microprocessors, or • Low Power: 75 mW Max
Operates Stand-Alone
• Total Unadjusted Error: ±½ LSB and ± 1 LSB
• Latched TRI-STATE Output
DESCRIPTION
• Logic Inputs and Outputs Meet Both MOS and
By using a half-flash conversion technique, the 8-bit
T
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L Voltage Level Specifications
ADC0820-N CMOS A/D offers a 1.5 µs conversion
• Operates Ratiometrically or with any
time and dissipates only 75 mW of power. The half-
Reference Value Equal to or Less than V
CC
flash technique consists of 32 comparators, a most
• 0V to 5V Analog Input Voltage Range with
significant 4-bit ADC and a least significant 4-bit
Single 5V Supply
ADC.
• No Zero or Full-Scale Adjust Required
The input to the ADC0820-N is tracked and held by
• Overflow Output Available for Cascading
the input sampling circuitry eliminating the need for
an external sample-and-hold for signals moving at
• 0.3 in. Standard Width 20-Pin PDIP
less than 100 mV/µs.
• 20-Pin PLCC
For ease of interface to microprocessors, the
• 20-Pin SOIC
ADC0820-N has been designed to appear as a
memory location or I/O port without the need for
external interfacing logic.
Connection and Functional Diagrams
Figure 1. CDIP, PDIP, Figure 2. PLCC Package
and SOIC Packages (Top View)
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PRODUCTION DATA information is current as of publication date.
Copyright © 1999–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.