isppac30 Lattice Semiconductor Corp., isppac30 Datasheet - Page 23

• Manufacturer Part Number: isppac30
• Description: In-system Programmable Analog Circuit
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Figure 6. PAC-Designer Design Entry Screen
Design Simulation Capability
A powerful feature of PAC-Designer is its simulation capability, enabling quick and accurate verification of circuit
operation and performance. Once a circuit is configured via the interactive design process, gain and phase
response between any input and output can then be simulated. This function is part of the simulator capability
which derives a transfer equation between the two points and then sweeps it over the user-specified frequency
range. Figure 7 shows a typical screen plot of the gain/phase simulator.
Figure 7. PAC-Designer Simulation Plot Screen
Ready
Ready
-100
-150
150
100
-20
-50
40
20
50
File
File
PAC Designer - [ispPAC30.PAC: Plot]
0
0
0
0
PAC Designer - [ispPAC30.PAC: Schematic]
Edit
Edit
MSEL1 = 0 (a)
MSEL2 = 0 (a)
IN1
IN2
IN3
IN4
View
View
Tools
Tools
100
100
Options
Options
a
b
a
b
IA1
IA2
IA3
IA4
MDAC1
Code: 00h
-100%
MDAC2
Code: 00h
-100%
-1
1
-1
1
Window
Window
1K
1K
UES Bits = 0000000000000000
Help
Help
23
10K
10K
VREF1: 64mV
VREF2: 64mV
100K
100K
Digital I/O
Configuration
1.02 pF
OA1
1.02 pF
OA2
1M
1M
OUT1
OUT2
ispPAC30 Data Sheet
Phase Plot
Gain Plot