MC33794 Просмотр технического описания (PDF) - Freescale Semiconductor
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MC33794 Datasheet PDF : 18 Pages
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INTERNAL BLOCK DIAGRAM
A,B,C,D
TEST
2.8 kΩ
E1 – E9
REF_A*, REF_B*
2.8 kΩ
* REF_A and REF_B are
not switched to ground
when not selected.
VDD
VCC
RST
WD_IN
VPWR
AGND
GND and HEAT SINK
PWR_MON
VDD_MON
LAMP_GND
LAMP_CTRL
ISO_OUT
ISO_IN
4
CONTROL
LOGIC
MUX
OUT
MUX
IN
POR/
WD
VCC
REG
VDD
REG
22 kΩ (Nominal)
OSC
150 Ω
300 Ω
CLK
R_OSC
39 kΩ
SHIELD_EN
SHIELD
RECT
LPF
GAIN AND
OFFSET
LP_CAP
10 nF
ATTN
LEVEL
SIGNAL
LAMP_SENSE
LAMP_MON
LAMP CKT
ISO-9141
LAMP_OUT
ISO-9141
(Note: All Resistor Values are Nominal)
Figure 1. Simplified Functional Block Diagram
MC33794
2
Sensors
Freescale Semiconductor
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