I've recently attempted testing out the Texas Instruments THS7530 in multisim. After experiencing difficulties getting a signal output from the suggested test circuit in the device datasheet I inspected the device model. It is in fact the same model (created 11/26/02) that is printed on the device datasheet. This model only features 8 pins from the 12 functioning pins on the device. It misses the Vg- pin suggesting it is tied to ground, it missing the PD (power down) pin suggesting this is constantly on and finally missing the Vclamp pins (which in the datasheet model suggests this function is not modeled). However in the model schematic the device symbol has all 12 functioning pins accusable. Am I missing something form the multisim model that allows these device functions that are missing from the datasheet model?
I am still yet to obtain any signal outputs from the multisim database model however when loading the datasheet model onto a custom component I'm achieving an amplified output. The output however is being harshly clamped to 3.5Vpk-pk for any input signals exceeding 300mVpk-pk (At a Vgain level of 0.5V and Vocm at 2.5V). This is contrary to the quoted input signal range of the device ranging from -Vs to +Vs. I'm assuming this is the un-adjustable clamping level of the model having an effect, is there any way I can adjust this to provide amplification for a 2V pk-pk input signal without getting clamping effects?
Many thanks,
Robert
