mc33794 Freescale Semiconductor, Inc, mc33794 Datasheet - Page 10

• Manufacturer Part Number: mc33794
• Description: Electric Field Imaging Device
• Manufacturer: Freescale Semiconductor, Inc

Table 5. Electrode Selection
10
MC33794
Table 4. Dynamic Electrical Characteristics
reflect the approximate parameter means at T
to GND unless otherwise noted.
OSC
Shield Driver
POR
Watchdog
Lamp Driver
Notes
Source (internal)
E1
E2
E3
E4
E5
E6
E7
OSC Frequency Stability
OSC Center Frequency
R_OSC = 39 kΩ
Harmonic Content
Shield Driver Maximum Harmonic level below Fundamental
Shield Driver Gain Bandwidth Product
POR Time-Out Period
Watchdog Time-Out Period
Watchdog Reset Hold Time
Short Circuit to Battery Survival Time
12.
13.
TERMINAL/SIGNAL
Characteristics noted under conditions
2nd through 4th Harmonic Level
5th and Higher
10 pF ≤ C
Measured at 120 kHz
Verified by design and characterization. Not tested in production.
Does not include errors in external reference parts.
LOAD
ELECTRODE SELECTION
(12)
≤ 500 pF
(12),
Characteristic
(13)
D
0
0
0
0
0
0
0
0
DYNAMIC ELECTRICAL CHARACTERISTICS
(12)
C
0
0
0
0
1
1
1
1
9.0 V ≤ VPWR ≤ 18 V
A
= 25°C under normal conditions unless otherwise noted. Voltages are relative
B
0
0
1
1
0
0
1
1
(12)
A
1
0
1
1
0
1
0
0
, -40°C
Table 5. Electrode Selection (continued)
E8
E9
REF_A
REF_B
Internal OSC
Internal OSC after 22 kΩ
Internal Ground
Reserved
≤
TERMINAL/SIGNAL
T
OSCH
A
SD
Symbol
t
SD
t
WDPER
≤
WDHLD
f
f
t
t
STAB
OSC
PER
SCB
HARM
85°C unless otherwise noted. Typical values noted
GBW
ARM
Min
3.0
9.0
9.0
50
–
–
–
–
–
–
D
1
1
1
1
1
1
1
1
Typ
120
-20
4.5
68
–
–
–
–
–
–
Freescale Semiconductor
C
0
0
0
0
1
1
1
1
Max
250
-20
-60
10
50
50
–
–
–
–
B
0
0
1
1
0
0
1
1
Sensors
MHz
Unit
kHz
ms
ms
ms
ms
dB
dB
%
A
0
1
0
1
0
1
0
1