AD8138 Fully Differential Amplifier Single-Ended to Differential Driver

Components used

SPICE netlist

* **************************************************
* Generated from CircuitSim Schematic
**************************************************
* net label +5V joins NET_002::component:u1:99 net-label-pin:node-2dab6a46-580d-404f-be98-1943a5a21c05:VPLUS::component:node-2dab6a46-580d-404f-be98-1943a5a21c05:VPLUS
* net label -5V joins NET_001::node:junction-a2f37c16-3c9e-4d4d-b755-da9bcd4bbf03 net-label-pin:node-2dab6a46-580d-404f-be98-1943a5a21c05:VMINUS::component:node-2dab6a46-580d-404f-be98-1943a5a21c05:VMINUS
V_PS1P N7 0 DC 5
V_PS1N N6 0 DC -5
R_RFN N8 N4 1K
R_RFP N8 N2 1K
R_RGN N4 0 1K
R_RGP N2 N1 1K
R_RLN N10 0 100K
R_RLP N8 0 100K
X_U1 N2 N4 N7 N6 N10 N8 0 AD8138_AD
V_VIN N1 0 SIN(0 0.1 1000 0 0 0 )
E_VP_OUTN VP_OUTN 0 N10 0 1
E_VP_OUTP VP_OUTP 0 N8 0 1
E_VP_VIN VP_VIN 0 N2 0 1

**************************************************
* Models and supporting definitions follow
**************************************************
* Behavioral ngspice-compatible equivalent for AD8138_AD
* The original MicroCap macro-model is preserved in component-validation/input for provenance.
* It fails ngspice operating-point convergence in node spicewrapper because of its output-limit diode network.
.SUBCKT AD8138_AD 3a 9 99 98 71 71b 110
    RINP 3a 0 10MEG
    RINN 9 0 10MEG
    RVP 99 0 1G
    RVN 98 0 1G
    RVOCM 110 0 10MEG
    EOUTP 71b 110 3a 9 1
    EOUTN 71 110 9 3a 1
    ROUTP 71b 110 100MEG
    ROUTN 71 110 100MEG
.ENDS

**************************************************
* Simulation settings
**************************************************
.tran 0.00001 0.005 0
.save V(VP_VIN) V(VP_OUTP) V(VP_OUTN)
.end