33912 Datasheet, PDF (11/47 Pages) Freescale Semiconductor, Inc – LIN System Basis Chip with DC Motor Pre-driver and Current

ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics (continued)
Characteristics noted under conditions 5.5V ≤ V_SUP ≤ 18V, -40°C ≤ T_A ≤ 125°C for the 33912 and -40°C ≤ T_A ≤ 85°C for the
34912, unless otherwise noted. Typical values noted reflect the approximate parameter mean at T_A = 25°C under nominal
conditions, unless otherwise noted.
Characteristic
L1, L2, L3 AND L4 INPUT PINS (L1, L2, L3, L4)
Symbol
Min
Typ
Max
Unit
Low Detection Threshold
5.5V < V_SUP < 27V
High Detection Threshold
5.5V < V_SUP < 27V
Hysteresis
5.5V < V_SUP < 27V
Input Current⁽³⁶⁾
-0.2V < V_IN < VS1
Analog Input Impedance⁽³⁷⁾
Analog Input Divider Ratio (RATIO_Lx = V_Lx / V_ADOUT0)
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
Analog Output offset Ratio
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
Analog Inputs Matching
LXDS (Lx Divider Select) = 0
LXDS (Lx Divider Select) = 1
V_THL
V
2.0
2.5
3.0
V_THH
V
3.0
3.5
4.0
V_HYS
V
0.5
1.0
1.5
I_IN
µA
-10
–
10
R_LXIN
800
1550
–
kΩ
RATIO_LX
0.95
1.0
1.05
3.42
3.6
3.78
V_RATIOLx-
mV
OFFSET
-80
0.0
80
-22
0.0
22
LX_MATCHING
%
96
100
104
96
100
104
WINDOW WATCHDOG CONFIGURATION PIN (WDCONF)
External Resistor Range
R_EXT
20
–
200
kΩ
Watchdog Period Accuracy with External Resistor (Excluding Resistor
Accuracy)⁽³⁸⁾
WD_ACC
-15
–
15
%
ANALOG MULTIPLEXER
Internal Chip Temperature Sense Gain
VSENSE Input Divider Ratio (RATIO_VSENSE = V_VSENSE / V_ADOUT0)
5.5V < V_SUP < 27V
VSENSE Output Related Offset
-40°C < T_A < -20°C
S_TTOV
–
RATIO_VSENSE
5.0
OFFSET_VSENSE
-30
-45
10.5
5.25
–
–
–
mV/K
5.5
30
mV
45
ANALOG OUTPUTS (ADOUT0 AND ADOUT1)
Maximum Output Voltage
-5mA < I_O < 5mA
Minimum Output Voltage
-5mA < I_O < 5mA
V_{OUT_MAX}
V
V_DD -0.35
–
V_DD
V_{OUT_MIN}
0.0
V
–
0.35
Notes
36. Analog multiplexer input disconnected from Lx input pin.
37. Analog multiplexer input connected to Lx input pin.
38. Watchdog timing period calculation formula: t_PWD [ms] = 0.466 * (R_EXT - 20) + 10 (R_EXT in kΩ)
Analog Integrated Circuit Device Data
Freescale Semiconductor
33912
11