mariapeter
Newbie level 3
i have downloaded the .zap file of ATF36163 from avago website.but when i start the DC simulation with ADS2008,it said that :
Simulation / Synthesis Messages
Warning detected by hpeesofsim during DC analysis `DC1'.
Matrix is singular (detected at node or branch `X1.L56.i').
Warning detected by hpeesofsim during DC analysis `DC1'.
Circuit converged after a virtual resistance of 1 TOhms
was added between each node and ground, and a virtual
resistance of 1 pOhms was inserted in each current branch.
Possible causes include floating nodes or missing ground.
Warning detected by hpeesofsim during DC analysis `DC1'.
A virtual resistance of 1 pOhms
was added to branch X1.L56.i.
Warning detected by hpeesofsim during DC analysis `DC1'.
A virtual resistance of 1 pOhms
was added to branch X1.L9.i.
Warning detected by hpeesofsim during DC analysis `DC1'.
A virtual resistance of 1 pOhms
was added to branch X1.L67.i.
Status / Summary
hpeesofsim (*) 331.200 May 6 2008 (built: 05/06/08 00:26:15)
Copyright Agilent Technologies, 1989-2008.
CT Sweep1[1] <D:\users\default\atf36163_prj\networks\1> VGS=(-1->0)
DC Sweep1[1].DC1[1/21] <D:\users\default\atf36163_prj\networks\1> VGS=-1 VDS=(0->5)
i have no idea about this.someone give me some help!!!~
here is the ATF36163 .zap file&my simulation prj.
Simulation / Synthesis Messages
Warning detected by hpeesofsim during DC analysis `DC1'.
Matrix is singular (detected at node or branch `X1.L56.i').
Warning detected by hpeesofsim during DC analysis `DC1'.
Circuit converged after a virtual resistance of 1 TOhms
was added between each node and ground, and a virtual
resistance of 1 pOhms was inserted in each current branch.
Possible causes include floating nodes or missing ground.
Warning detected by hpeesofsim during DC analysis `DC1'.
A virtual resistance of 1 pOhms
was added to branch X1.L56.i.
Warning detected by hpeesofsim during DC analysis `DC1'.
A virtual resistance of 1 pOhms
was added to branch X1.L9.i.
Warning detected by hpeesofsim during DC analysis `DC1'.
A virtual resistance of 1 pOhms
was added to branch X1.L67.i.
Status / Summary
hpeesofsim (*) 331.200 May 6 2008 (built: 05/06/08 00:26:15)
Copyright Agilent Technologies, 1989-2008.
CT Sweep1[1] <D:\users\default\atf36163_prj\networks\1> VGS=(-1->0)
DC Sweep1[1].DC1[1/21] <D:\users\default\atf36163_prj\networks\1> VGS=-1 VDS=(0->5)
i have no idea about this.someone give me some help!!!~
here is the ATF36163 .zap file&my simulation prj.