This ADC0804 IC is CMOS 8-bit successive approximation converters (analog to digital converter) that use a differential potentiometric ladder. This converter is designed to operate with NSC800 and INS8080A derivative control bus and with Tri-state output latches directly driving the data bus. This analog to digital converters seems like memory locations or input/output ports to the MPU and no interfacing logic is needed. Differential analog voltage inputs allow in increasing the common-mode rejection and offsetting the analog zero input voltage value. Besides, the voltage reference input can be adjusted to allow encoding any smaller analog voltage span to the full 8 bits of resolution.

FEATURES:

• Compatible With 8080-µP Derivatives – No.
• Interfacing Logic– Access Time 135 ns.
• compatible with All Microprocessors, Operates as a Stand-Alone Device.
• Differential Analog Voltage Inputs.

TTL Voltage-Level Specifications:

• Works With 2.5-V (LM336) Voltage Reference.
• On-Chip Clock Generator.
• Analog Input Voltage Range 0-V to 5-V.

Single 5-V Supply

• No Zero Adjust Required.
• 0.3-Inch Standard Width 20-Pin DIP Package.
• Small Outline or 20-Pin Molded Chip Carrier.

Package

• Operates Ratiometrically, 5 VDC, 2.5 VDC, Analog Span Adjusted Voltage Reference.

Key Specifications:

• Resolution: 8 Bits.
• Total Error: ±1/4 LSB, ±1/2 LSB, and ±1 LSB.
• Conversion Time: 100 µs.