Details

---

BUY AD7804BR https://www.utsource.net/itm/p/12612263.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD	Operating Range	5.0	-	15.0	V
Reference Voltage	VREF	Internal	2.5	-	2.5	V
Conversion Time	tCONV	100 kSPS	-	10	-	渭s
Differential Nonlinearity (DNL)	DNL	Full Scale Range	-1	0	+1	LSB
Integral Nonlinearity (INL)	INL	Full Scale Range	-1	0	+1	LSB
Offset Error	VOFF	Full Scale Range	-5	0	+5	mV
Gain Error	GAIN	Full Scale Range	-0.1	0	+0.1	%FSR
Power Dissipation	PD	VDD = 5V, 100 kSPS	-	30	-	mW
Operating Temperature	Toper	Industrial	-40	-	+85	掳C

Instructions for Using AD7804BR

1. Power Supply:

   • Connect the VDD pin to a stable power supply between 5V and 15V.
   • Ensure that the power supply is well-filtered to avoid noise affecting the ADC performance.

2. Reference Voltage:

   • The AD7804BR has an internal 2.5V reference voltage. If an external reference is used, it should be connected to the VREF pin and must not exceed the supply voltage.

3. Analog Input:

   • Connect the analog signal to the IN+ and IN- pins. The input range should be within the reference voltage (0V to 2.5V).

4. Digital Output:

   • The digital output is provided in parallel form. Connect the output pins (D0-D9) to your microcontroller or data acquisition system.
   • Ensure that the digital lines are properly terminated to avoid signal reflections.

5. Conversion Control:

   • The conversion process is initiated by bringing the CS (Chip Select) pin low and providing a clock signal to the CLK pin.
   • The conversion result is available on the data lines after the conversion time (tCONV).

6. Temperature Considerations:

   • The device operates over an industrial temperature range from -40掳C to +85掳C. Ensure that the operating environment does not exceed these limits.

7. Power Dissipation:

   • The AD7804BR dissipates approximately 30mW at 5V supply and 100 kSPS. Ensure adequate heat dissipation if operating at higher temperatures or in high-density PCB designs.

8. Grounding and Layout:

   • Proper grounding and layout techniques are crucial for optimal performance. Use a ground plane and keep signal traces short to minimize noise and interference.

9. Storage and Handling:

   • Store the device in a dry, static-free environment. Follow proper ESD handling procedures to avoid damage to the device.

10. Testing:

    • Before integrating the AD7804BR into a larger system, test it with a known signal to verify its performance and functionality.

(For reference only)