What am I supposed to do with the unused pins of the package device?
|
Post Date:
|
07/16/07
|
|
Question:
|
What am I supposed to do with the unused pins of the packaged device?
|
|
Answer:
|
All devices:
- Temperature Diode Pin If the pin for the temperature Diode stays unused, we advise you to connect it to the ground. - Unconnected Outputs If you want to use the differential output buffers as single-ended buffers, we advise you to terminate their negative outputs the same way they are terminated themselves. .JPG) - Differential analog input
If you want to use the analog input buffer as a single-ended buffer,
we advise you to connect the negative input to the ground via a 50W resistor as shown below. .jpg) - Differential Clock Input
If you want to use the clock input buffer as a single-ended buffer, you must connect the negative input to the common mode voltage of the true signal.
.jpg) - Differential clock input and differential analog Inputs
If you want to use the analog input buffer or the clock input buffer as a single-ended buffer, we advise you to connect the negative input to the ground through a 50W resistor.
.JPG) - Differential Digital Inputs
If you want to use the digital data input buffer as a single-ended buffer, we advise you to connect the negative input to the common mode voltage of the true signal.
If you do not need to use a differential input buffer (IN/INB), you can let both pins floating.
- Differential clock input
If you want to use the clock input buffer as a single-ended buffer, we advise you to connect the negative input to the common mode voltage of the true signal.
- ADC Delay Adjust Input/Output Pins
If you do not use the ADC delay adjust function from the DMUX device, we advise you to let the associated pins floating.
- DMUX Delay adjust control and ADC Delay adjust Control
If you do not use these control functions, the associated pins have to be grounded.
- Single-ended outputs
If you have unused single-ended outputs, these have to be terminated the same way as the used output pins.
|