MC44818 Просмотр технического описания (PDF) - Motorola => Freescale
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MC44818 Datasheet PDF : 8 Pages
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MC44818
ELECTRICAL CHARACTERISTICS (VCC1 = 5.0 V, VCC2 = 33 V, VCC3 = 12 V, TA = 25°C, unless otherwise noted.)
Characteristic
Pin
Min
Typ
Max
VCC1 Supply Voltage Range
VCC1 Supply Current (VCC1 = 5.0 V)
VCC2 Supply Voltage Range
VCC2 Supply Current (Output Open)
Band Buffer Leakage Current when “Off” at 12 V
7
7
6
6
10–13
4.5
5.0
5.5
–
37
50
25
–
37
–
1.5
2.3
–
0.01
1.0
Band Buffer Saturation Voltage when “On” at 30 mA
10–13
–
0.15
0.3
Band Buffer Saturation Voltage when “On” at 40 mA
only for 0° to 80°C
10–13
–
0.2
0.5
Data/Clock Current at 0 V
1, 2
–10
–
0
Clock Current at 5.0 V
2
0
–
1.0
Data Current at 5.0 V Acknowledge “Off”
1
0
–
1.0
Data Saturation Voltage at 15 mA Acknowledge “On”
1
–
–
1.0
Data/Clock Input Voltage Low
1, 2
–
–
1.5
Data/Clock Input Voltage High
1, 2
3.0
–
–
Clock Frequency Range
2
–
–
100
Oscillator Frequency Range
3
3.15
3.2
4.05
Operational Amplifier Internal Reference Voltage
–
2.0
2.75
3.2
Operational Amplifier Input Current
4
–15
0
15
DC Open Loop Voltage Gain
–
100
250
–
Gain Bandwidth Product (CL = 1.0 nF)
Vout Low, Sinking 50 µA
Vout High, Sourcing 10 µA, VCC2 – Vout
Phase Detector Current in the High Impedance State
–
0.3
–
–
5
–
0.2
0.4
5
–
0.2
0.5
4
–15
0
15
Charge Pump High Current of Phase Comparator
4
30
50
85
Charge Pump Low Current of Phase Comparator
4
10
15
30
VCC3 Supply Voltage Range
VCC3 Supply Current
All Buffers “Off”
One Buffer “On” when Open
One Buffer “On” at 40 mA
14
VCC1
–
14.4
14
–
0.2
0.5
–
8.0
13
–
48
53
Data Format and Bus Receiver
The circuit receives the information for tuning and control
via the I2C bus. The incoming information, consisting of a
chip address byte followed by two or four data bytes, is
treated in the I2C bus receiver. The definition of the
permissible bus protocol is shown below:
1_STA CA CO BA
2_STA CA FM FL
3_STA CA CO BA
STO
STO
FM FL
STO
4_STA CA FM FL CO BA STO
STA = Start Condition
STO = Stop Condition
CA = Chip Address Byte
CO = Data Byte for Control Information
BA = Band Information
FM = Data Byte for Frequency Information
FL = Data Byte for Frequency Information
Figure 1. Complete Data Transfer Process
SDA
Unit
V
mA
V
mA
µA
V
V
µA
µA
µA
V
V
V
kHz
MHz
V
nA
V/V
MHz
V
V
nA
µA
µA
V
mA
SCL
S
1–7
8
9
STA ADDRESS R/W ACK
CA
1–7
8
9
DATA
ACK
1–7
8
DATA
9
P
ACK STO
MOTOROLA ANALOG IC DEVICE DATA
3
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