AOC P/N : 41A50-144 Pin Description, Analog-to-Digital Converter, Pin #, Name Description

1.3 Pin Description

Unless otherwise stated, unused input pins must be tied to ground, and unused output pins left open.

Table 1 : Analog-to-Digital Converter

PIN #	Name	I/O	Description
77	ADC_VDD2		Digital power for ADC encoding logic. Must be bypassed with 0.1uF capacitor to
			pin 78 (ADC_GND2)
78	ADC_GND2		Digital GND for ADC encoding logic. Must be directly connected to the digital
			system ground plane.
79	ADC_VDD1		Digital power for ADC clocking circuit. Must by passed with 0.1uF capacitor to
			pin 80 (ACD_GND1).
80	ADC_GND1		Digital GND for ADC clocking circuit. Must be directly connected to the digital
			system ground plane.
81	SUB_GNDA		Dedicated pin for substrate guard ring that protects the ADC reference system.
			Must be directly connected to the analog system ground plane.
82	ADC_GNDA		Analog ground for ADC analog blocks that are shared by all three channels.
			Includes bandgap reference, master biasing and full scale adjust. Must be directly
			connected to analog system ground plane.
84	ADC_VDDA		Analog power for ADC analog blocks that are shared by all three channels.
			Includes bandgap reference, master biasing and full scale adjust. Must be
			bypassed with 0.1uF capacitor to pin 82 (ADC_GNDA).
83	Reserved		For internal testing purpose only. Do not connect.
85	ADC_BGNDA		Analog ground for the blue channel. Must be directly connected to the analog
			system ground plane.
88	ADC_BVDDA		Analog power for the blue channel. Must be bypassed with 0.1uF capacitor to pin
			85(BGNDA).
86	BLUE-	I	Negative analog input for the Blue channel.
87	BLUE+	I	Positive analog input for the Blue channel.
89	ADC_GGNDA		Analog ground for the green channel. Must be directly connected to the analog
			system ground plane.
92	ADC_GVDDA		Analog power for the green channel. Must be bypassed with 0.1uF capacitor to
			pin 89 (ADC_GGNDA).
90	GREEN-	I	Negative analog input for the Green channel.
91	GREEN+	I	Positive analog input for the Green channel.
93	ADC_RGNDA		Analog ground for the red channel. Must be directly connected to the analog
			system ground plane.
96	ADC_RVDDA		Analog power for the red channel. Must be bypassed with 0.1uF capacitor to pin
			93 (ADC_RGNDA).
94	RED-	I	Negative analog input for the Red channel.
95	RED+	I	Positive analog input for the Red channel.

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