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ADC0820 8-bit A/D Converter with Track/Hold Datasheet

Photograph
ADC0820CCN - ADC0820 8-bit A/D Converter with Track/Hold

Product Details

The ADC0820 is a fast conversion time, 8-bit Analog to Digital Converter. The ADC0820 uses 32 internal comparators to provide a conversion time of 1.5µs. The ADC0820 also includes a track and hold function for termporary storage of readings.


Features

  • Built-in Track-and-Hold Function
  • Easy Interfacing to All Microprocessors
  • No Missing Codes
  • Output Meets TTL Requirements
  • Latch Tri-State Output
  • On-chip Clock Generator
  • 0V to 5V Analog Input Voltage Range with Single 5V Supply
  • No Zero or Full Scale Adjust Required
  • Operates Ratiometrically or With a Reference Value

Pin Layout
ADC0820 Pin Layout

Pin Description
Pin Number Description
1 Vin - Voltage Input
2 DB0 - Tri-State Output Bit 0
3 DB1 - Tri-State Output Bit 1
4 DB2 - Tri-State Output Bit 2
5 DB3 - Tri-State Output Bit 3
6 WR/RDY - Write/Ready Mode
7 MODE - Mode Selection
8 RD - Read (Active Low)
9 INT - Interrupt (Active Low)
10 GND - Ground
11 Vref- - Voltage Reference Negative Input
12 Vref+ - Positive Voltage Reference Input
13 CS - Chip Select (Active Low)
14 DB4 - Tri-State Data Output Bit 4
15 DB5 - Tri-State Data Output Bit 5
16 DB6 - Tri-State Data Output Bit 6
17 DB7 - Tri-State Data Output Bit 7
18 OFL - Overflow Output (Active Low)
19 NC - Not Connected
20 Vcc - Power Supply Voltage

Dimensional Drawing
ADC0820 IC Dimensional Drawing
ADC0820 IC Dimensional Drawing

Technical Data

Datasheet

National Semiconductor - ADC0820 Datasheet Datasheet

Application Notes