ADC0820

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ADC0820 Description

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ADC0820 Datasheet (PDF)

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ADC0820 Features

• Built-in track-and-hold function
• No missing codes
• No external clocking
• Single supply-5 V_DC
• 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 V_CC
• 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)

ADC0820 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.

ADC0820 Parameters

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