Details

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BUY AD1674JR https://www.utsource.net/itm/p/304122.html
12-Bit 100 kSPS A/D Converter

Below is the parameter table and instructions for the AD1674JR, which is a 12-bit Analog-to-Digital Converter (ADC) from Analog Devices.

AD1674JR Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit
Supply Voltage	VDD	4.75	5.0	5.25	V
Reference Voltage	VREF	2.5	5.0	5.0	V
Conversion Time	tC	-	13	-	μs
Input Voltage Range	VIN	0	-	VREF	V
Differential Nonlinearity (DNL)	DNL	-1	0	+1	LSB
Integral Nonlinearity (INL)	INL	-1	0	+1	LSB
Signal-to-Noise Ratio (SNR)	SNR	-	72	-	dB
Power Consumption	IDD	-	15	-	mA
Operating Temperature Range	Toper	-40	-	85	°C
Storage Temperature Range	Tstg	-65	-	150	°C

Instructions for Using AD1674JR

1. Power Supply:

   • Connect the VDD pin to a stable 5V power supply.
   • Ensure that the power supply has sufficient decoupling capacitors (e.g., 0.1μF and 10μF) placed close to the VDD pin to reduce noise and stabilize the supply voltage.

2. Reference Voltage:

   • Connect the VREF pin to a stable reference voltage. The reference voltage can range from 2.5V to 5.0V.
   • Use a precision voltage reference for better accuracy.

3. Analog Input:

   • Connect the analog input signal to the VIN pin. The input voltage should be within the range of 0V to VREF.
   • Ensure that the input signal is properly filtered to avoid aliasing and noise.

4. Digital Interface:

   • The AD1674JR uses a parallel interface for data output.
   • Connect the digital output pins (D0-D11) to your microcontroller or digital system.
   • Use the CS (Chip Select), RD (Read), and WR (Write) control signals to manage the communication with the ADC.

5. Conversion Control:

   • To start a conversion, set the CS pin low and the WR pin high.
   • After the conversion time (typically 13 μs), the data will be available on the digital output pins.
   • Set the RD pin low to read the data, and then set it high again to complete the read cycle.

6. Timing Considerations:

   • Ensure that the timing requirements for the control signals (CS, RD, WR) are met to avoid data corruption.
   • Refer to the datasheet for detailed timing diagrams and specifications.

7. Power Down Mode:

   • To reduce power consumption, the AD1674JR can be put into a power-down mode by setting the CS pin high.
   • In power-down mode, the power consumption is significantly reduced, but the device will not perform conversions.

8. Temperature Considerations:

   • The operating temperature range is from -40°C to 85°C.
   • Ensure that the device is operated within this range to maintain performance and reliability.

9. Storage:

   • Store the device in a dry, cool environment to prevent damage from moisture and extreme temperatures.

By following these instructions, you can effectively use the AD1674JR in your analog-to-digital conversion applications.

(For reference only)