Details

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Parameter	Description	Value
Part Number	Part number	DS1010-250
Type	Type of device	Digital Potentiometer
Resistance Range	Range of resistance values	0 to 10k惟
Resolution	Minimum step change in resistance	10惟
Tolerance	Accuracy of resistance value	卤20%
Operating Voltage	Supply voltage range	2.7V to 5.5V
Operating Current	Maximum current through the wiper	1mA
Wiper Resistance	Maximum resistance between wiper and terminal	100惟
Power Rating	Maximum power dissipation	25mW
Temperature Range	Operating temperature range	-40掳C to +85掳C
Package	Physical package type	SOIC-8
Interface	Communication interface	SPI
Number of Channels	Number of independent potentiometers	1
Endurance	Number of expected cycles before failure	1,000,000

Instructions for Use

1. Power Supply:

   • Connect the VCC pin to a supply voltage between 2.7V and 5.5V.
   • Connect the GND pin to the ground.

2. Communication Interface:

   • Use the SPI interface to communicate with the DS1010-250.
   • Connect the SCLK (Serial Clock) pin to the clock signal from your microcontroller.
   • Connect the MOSI (Master Out Slave In) pin to the data output from your microcontroller.
   • Connect the CS (Chip Select) pin to the chip select signal from your microcontroller.

3. Initialization:

   • Ensure the CS pin is high to deselect the device during initialization.
   • To select the device, pull the CS pin low.
   • Send the appropriate command sequence to initialize the device and set the wiper position.

4. Setting Wiper Position:

   • Use the Wiper Write command to set the wiper position.
   • The wiper position is determined by a 7-bit value (0 to 127), where each step changes the resistance by 10惟.
   • Example command sequence:
     • CS low
     • Send Wiper Write command (0x00)
     • Send 7-bit wiper position value
     • CS high

5. Reading Wiper Position:

   • Use the Wiper Read command to read the current wiper position.
   • Example command sequence:
     • CS low
     • Send Wiper Read command (0x0F)
     • Read 7-bit wiper position value
     • CS high

6. Powering Down:

   • To power down the device, set the wiper position to the desired value and then disconnect the VCC supply.
   • Alternatively, use the Shutdown command to place the device in a low-power mode.

7. Handling:

   • Handle the device with care to avoid static discharge.
   • Store in a dry, cool place when not in use.

8. Troubleshooting:

   • If the device does not respond, check the connections and ensure the correct supply voltage.
   • Verify the communication protocol and command sequences.

For detailed command codes and timing diagrams, refer to the datasheet provided by the manufacturer.

(For reference only)