M30240ECFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30240ECFP Datasheet - Page 139

• Manufacturer Part Number: M30240ECFP
• Description: M30240 Group Specification
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Preliminary Specifications REV. E
Specifications in this manual are tentative and subject to change
Low Pass Filter Network
5.3 Low Pass Filter Network
Table 1.52:
Figure 1.120: LPF Filter Schematic
Figure 1.121: Power Supply
Pin 78
Digital
(on card)
Digital
(LPF)
All passive components should be in close proximity to pin 78 (LPF), capacitors should be X7R di-
electric or better. The recommended values are listed in Table 1.52 . See Figure 1.120 for schematic
of the LPF.
Analog V
ground planes. Figure 1.121 illustrates the power supply isolation.
V
V
C2 = 680 pf
C1 = 0.1 f
cc
ss
Pin 77
R 1000
Recommended Values
R
ss
and Analog V
C
Decoupling
Capacitors
C1
A
Ferrite Beads
vss
cc
, pins 77 and 80 should have isolated connections to the digital V
C2
10%
10%
10%
C
Analog
Analog
V
V
1-139
cc
ss
(Pin 77)
(Pin 80)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Mitsubishi microcomputers
M30240 Group
ss
and V
cc