Details

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BUY AD7684BRMZ https://www.utsource.net/itm/p/12596541.html

Parameter	Symbol	Min	Typical	Max	Unit
Supply Voltage	VDD	2.7	-	5.25	V
Reference Voltage	VREF	0	-	5.1	V
Input Range	VIN	0	-	VREF	V
Resolution		-	16	-	bits
Conversion Time	tCONV	-	3.6	-	μs
Throughput Rate	fTHRU	-	278	-	kSPS
Differential Nonlinearity	DNL	-1	-	+1	LSB
Integral Nonlinearity	INL	-2	-	+2	LSB
Signal-to-Noise Ratio	SNR	-	90.2	-	dB
Total Harmonic Distortion	THD	-	-96	-	dB
Power Consumption (Active)	IDD	-	2.5	-	mA
Power Consumption (Power Down)	IDD(PD)	-	1.0	-	μA
Operating Temperature	Toperating	-40	-	125	°C
Storage Temperature	Tstorage	-65	-	150	°C

Instructions for Using AD7684BRMZ

1. Power Supply:

   • Connect the VDD pin to a stable power supply between 2.7V and 5.25V.
   • Ensure that the power supply has adequate decoupling capacitors (e.g., 0.1μF and 10μF) placed close to the VDD pin.

2. Reference Voltage:

   • The reference voltage (VREF) can be supplied externally or generated internally using the on-chip reference.
   • For external reference, connect the VREF pin to the desired reference voltage (up to 5.1V).
   • For internal reference, connect the VREF pin to VDD.

3. Analog Input:

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

4. Digital Interface:

   • The AD7684BRMZ uses a serial interface (SPI) for communication.
   • Connect the SCLK (Serial Clock), SDI (Serial Data In), and SDO (Serial Data Out) pins to the corresponding pins on your microcontroller or digital system.
   • The CS (Chip Select) pin should be pulled low to activate the device.

5. Conversion Start:

   • To start a conversion, bring the CS pin low and provide a rising edge on the SCLK pin.
   • The conversion will begin after the rising edge of the SCLK.

6. Data Readout:

   • After the conversion time (3.6 μs), the data will be available on the SDO pin.
   • Clock out the 16-bit data by toggling the SCLK pin 16 times while keeping CS low.

7. Power Management:

   • To enter power-down mode, bring the CS pin high.
   • The device will consume approximately 1.0 μA in power-down mode.

8. Temperature Considerations:

   • The device is rated for operation from -40°C to 125°C.
   • Store the device in an environment between -65°C and 150°C.

9. Layout Recommendations:

   • Use a ground plane to minimize noise and improve performance.
   • Keep signal traces as short as possible to reduce parasitic capacitance and inductance.

10. Handling Precautions:

    • Handle the device with care to avoid static damage.
    • Follow proper ESD (Electrostatic Discharge) precautions when handling the device.

(For reference only)