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CMOS High-Speed 8-Bit A/D Converter with Track/Hold Function

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 8
# Input Channels 1
Conv. Rate (ksps) (max) 400
Data Bus µP/8
ADC Architecture Flash
Diff/S.E. Input S.E. Only
External VREF (V) (min) 0
External VREF (V) (max) 5
Unipolar VIN (V) (max) 5
Package/Pins PDIP/20
SOIC (W)/20
Budgetary
Price (See Notes)
7.42
View Less

Simplified Block Diagram

Technical Docs

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 8
# Input Channels 1
Conv. Rate (ksps) (max) 400
Data Bus µP/8
ADC Architecture Flash
Diff/S.E. Input S.E. Only
External VREF (V) (min) 0
External VREF (V) (max) 5
Unipolar VIN (V) (max) 5
Package/Pins PDIP/20
SOIC (W)/20
Budgetary
Price (See Notes)
7.42

Key Features

  • Fast Conversion Time: 1.4μs Max.
  • Built-in Track-and-Hold Function
  • No Missing Codes
  • No User Adjustments Required
  • Single +5V Supply
  • No External Clock
  • Easy Interface To Microprocessors

Applications/Uses

  • Audio Systems
  • Digital Signal Processing
  • High Speed Data Acquisition
  • High-Speed Servo Loops
  • Telecommunications

Description

The ADC0820 is a high speed, microprocessor compatible, 8 bit analog-to-digital converter which uses a half-flash technique to achieve a conversion time of 1.4 μs. The converter has a 0V to +5V analog input range and uses a single +5V supply.

A built-in track-and-hold function is included, eliminating the need for an external track-and-hold for input slew rates up to 100mV/μs.

The A/D easily interfaces with microprocessors by appearing as a memory location or I/O port without the need for external interfacing logic. Data outputs use latched, three-state buffer circuitry to allow direct connection to a microprocessor data bus or system I/O port. An over-flow output is also provided for cascading devices to achieve higher resolution.

Maxim's ADC0820 is pin-compatible with National Semiconductor's ADC0820 and provides improved specifications. It is packaged in 20-pin Small Outline, DIP and CERDIP packages.

Simplified Block Diagram

ADC0820: Functional Block Diagram ADC0820: Functional Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.