Details

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BUY ADC0802LCWM/NOPB https://www.utsource.net/itm/p/860641.html
500 ns A/D Converter with S/H Function and Input Multiplexer

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	-	4.75	5.0	5.25	V
Supply Current	ICC	VCC = 5V, fs = 1MHz	-	10	15	mA
Analog Input Voltage Range	VIN	-	0	-	VCC	V
Conversion Time	tC	-	-	100	130	ns
Resolution	-	-	8	bits	-	-
Differential Nonlinearity (DNL)	DNL	-	±1	-	LSB
Integral Nonlinearity (INL)	INL	-	±1	-	LSB
Signal-to-Noise Ratio (SNR)	SNR	-	49	-	dB
Power-down Mode Current	IPD	VCC = 5V	-	0.1	0.5	μA

Instructions for Use:

1. Power Supply:

   • Connect the V_CC pin to a 5V supply.
   • Ensure the ground (GND) pin is connected to the system ground.

2. Analog Input:

   • Apply the analog signal to be converted to the V_IN pin.
   • The input voltage should be within the range of 0V to V_CC.

3. Clock Input:

   • Provide a clock signal to the CLK pin. The typical frequency is 1MHz, but it can range from 100kHz to 5MHz.

4. Start Conversion:

   • To start a conversion, bring the START pin high and then low. This triggers the ADC to begin the conversion process.

5. Data Output:

   • The digital output will be available on the data pins (D0-D7) after the conversion time has elapsed.
   • The output is in binary format, representing the 8-bit digital value of the analog input.

6. Power-down Mode:

   • To enter power-down mode, set the PD pin high. This reduces the power consumption to a very low level.
   • To resume normal operation, set the PD pin low.

7. Reset:

   • A reset can be performed by bringing the RST pin high and then low. This initializes the ADC to its default state.

8. Output Latch Enable:

   • The latch enable (LE) pin controls when the digital output is latched and held stable.
   • Set LE high to latch the output, and low to allow the output to change with new conversions.

9. End of Conversion (EOC):

   • The EOC pin goes high when the conversion is complete and the data is ready to be read.
   • Monitor this pin to determine when to read the output data.

10. Interfacing:

    • The ADC0802LCWM/NOPB can be interfaced with microcontrollers or other digital systems using standard parallel communication protocols.

Notes:

• Ensure that all connections are secure and free from noise to achieve accurate conversions.
• For optimal performance, use decoupling capacitors near the power supply pins to filter out any noise.

(For reference only)