Details

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BUY DS1100Z-25 https://www.utsource.net/itm/p/12598239.html

Parameter	Description
Part Number	DS1100Z-25
Function	Digital Potentiometer
Resistance Range	0 Ω to 10 kΩ
Resolution	256 steps
Step Size	39.06 Ω (10 kΩ / 256 steps)
Non-Volatile Memory	Yes
Operating Voltage	2.7 V to 5.5 V
Current Consumption	< 1 μA (standby), 1 mA (active)
Interface	SPI, I2C
Operating Temperature	-40°C to +85°C
Package Type	SOIC-8
Storage Temperature	-65°C to +150°C

Instructions for Use

1. Power Supply:

   • Connect the VCC pin to a power supply within the range of 2.7 V to 5.5 V.
   • Connect the GND pin to the ground.

2. Interface Selection:

   • For SPI communication:
     • Connect SCLK to the clock line.
     • Connect SDI to the data input line.
     • Connect SDO to the data output line.
     • Connect CS to the chip select line.
   • For I2C communication:
     • Connect SCL to the clock line.
     • Connect SDA to the data line.
     • Ensure pull-up resistors are used on the SCL and SDA lines.

3. Initialization:

   • Power on the device.
   • Send the appropriate initialization commands to set the wiper position and other settings as needed.

4. Wiper Position Control:

   • Use the command set to adjust the wiper position. The wiper can be moved to any of the 256 positions.
   • Example command for SPI: 0x00 (write to wiper register) followed by the desired position (0 to 255).

5. Non-Volatile Memory:

   • To store the current wiper position in non-volatile memory, send the store command.
   • Example command for SPI: 0x01 (store wiper position).

6. Reading Wiper Position:

   • To read the current wiper position, use the read command.
   • Example command for SPI: 0x02 (read from wiper register).

7. Shutdown Mode:

   • To enter low-power shutdown mode, send the shutdown command.
   • Example command for SPI: 0x03 (enter shutdown mode).

8. Reset:

   • To reset the device to its default state, send the reset command.
   • Example command for SPI: 0x04 (reset device).

9. Error Handling:

   • Monitor the status register for any error conditions.
   • Example command for SPI: 0x05 (read status register).

10. Temperature Considerations:

    • Ensure the operating temperature is within the specified range (-40°C to +85°C).
    • Avoid exposing the device to temperatures outside this range to prevent damage.

11. Storage:

    • When not in use, store the device in a dry environment with temperatures between -65°C and +150°C.

12. Handling:

    • Handle the device with care to avoid static discharge, which can damage the internal circuits.
    • Use proper ESD protection measures when handling the device.

(For reference only)