Details

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BUY AD679JNZ https://www.utsource.net/itm/p/695209.html
14-Bit 128 kSPS Complete Sampling ADC

Below is the parameter table and instructions for the AD679JNZ, which is a 12-Bit A/D Converter with Serial I/O from Analog Devices.

AD679JNZ Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	VCC	4.75	5.0	5.25	V
Reference Voltage	VREF	2.0	2.5	3.0	V
Input Voltage Range	VIN	0		VREF	V
Conversion Time	tCONV		10		μs	1 MHz clock rate
Resolution			12		bits
Differential Nonlinearity	DNL	-1	0	+1	LSB
Integral Nonlinearity	INL	-2	0	+2	LSB
Signal-to-Noise Ratio (SNR)	SNR		70		dB
Total Harmonic Distortion	THD		-80		dB
Power Consumption	PCON		150		mW
Operating Temperature Range	Toper	-40		+85	°C
Storage Temperature Range	Tstg	-65		+150	°C

Instructions for AD679JNZ

1. Power Supply:

   • Connect the VCC pin to a 5V supply.
   • Connect the GND pin to ground.

2. Reference Voltage:

   • Connect the VREF pin to a stable reference voltage between 2.0V and 3.0V. The input voltage range will be from 0V to VREF.

3. Input Signal:

   • Apply the analog input signal to the VIN pin. Ensure the signal is within the range of 0V to VREF.

4. Clock Input:

   • Connect a 1 MHz clock signal to the CLK pin for proper operation of the converter.

5. Serial Data Output:

   • The converted digital data is output on the SDO pin in serial format. The data is valid on the falling edge of the clock signal.

6. Conversion Start:

   • To start a conversion, bring the CS (Chip Select) pin low. The conversion process begins after the next rising edge of the clock signal.

7. Data Readout:

   • After the conversion time (typically 10 μs), the data is ready to be read out. The data is shifted out on the SDO pin with each clock cycle.

8. Power Management:

   • To reduce power consumption, the device can be put into a power-down mode by bringing the PD (Power Down) pin high. In this mode, the device consumes minimal power but does not perform conversions.

9. Temperature Considerations:

   • Ensure that the operating temperature is within the specified range of -40°C to +85°C. The storage temperature range is -65°C to +150°C.

10. Layout and Grounding:

    • Use a good grounding practice to minimize noise. Place decoupling capacitors close to the VCC and GND pins to filter out any supply noise.

By following these instructions, you can effectively use the AD679JNZ in your analog-to-digital conversion applications.

(For reference only)