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| DS8908B Datasheet, PDF (2/10 Pages) National Semiconductor (TI) – AM/FM Digital Phase-Locked Loop Frequency Synthesizer | |||
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Absolute Maximum Ratings (Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
(VCC1) (VCCM)
7V
(VCC2)
17V
Input Voltage
7V
Output Voltage
7V
Storage Temperature Range
b65 C to a150 C
Lead Temperature (Soldering 4 seconds)
260 C
Operating Conditions
Min
Max
VCC1
VCC2
VCCM
Temperature TA
45
VCC1 a 1 5
35
b40
55
15 0
55
a85
Units
V
V
V
C
DC Electrical Characteristics (Notes 2 and 3)
Symbol
VIH
IIH
VIL
IIL
IOH
VOL
ICC1
ICCM
IOUT
Parameter
Conditions
Logical ââ1ââ Input Voltage
Logical ââ1ââ Input Current
Logical ââ0ââ Input Voltage
VIN 2 7V
Logical ââ0ââ Input Current
Logical ââ1ââ Output Current
All Bit Outputs 50 Hz Output
Data Clock and ENABLE Inputs VIN 0V
VOH 5 5V
1 98 MHz Output
Logical ââ0ââ Output Voltage
All Bit Outputs
VOH 2 4V VCCM 4 5V
IOL 5 mA
50 Hz Output 1 98 MHz Output
1 98 MHz Output
Supply Current (VCC1)
VCCM Supply Current
Charge Pump Ougtput Current
IOL 250 mA
IOL 20 mA TA l 70 C
IOL 20 mA TA s 70 C
All Bit Outputs High
VCCM 5 5V All Other Pins Open
3 33k s RPROG s 33 3k
IOUT Measured between
Pin 17 and Pin 18
IPROG VCC1 2 RPROG
Pump Up
Pump Down
TRI-STATE
Min
20
b20
b20
Typ Max Units
V
0
10 mA
08
V
b5 b25 mA
50 mA
b250 mA
05
V
05
V
03
V
04
V
160 mA
2 5 4 0 mA
IPROG a20 %
IPROG a20 %
0
11 nA
ICC2
VCC2 Supply Current
OPVOH
OPVOL
CPOBIAS
Op Amp Minimum High Level
Op Amp Maximum Low Level
Charge Pump Bias Voltage
Delta
VCCM 5V VCC1 5 5V VCC2 15V
All Other Pins Open
VCC1 4 5V IOH b750 mA
VCC1 5 5V IOL 750 mA
CPO Shorted to Op Amp Output
CPO TRI-STATE
Op Amp IOL 750 mA vs b750 mA
67
VCC2 b0 4
11 mA
V
06
V
100 mV
AC Electrical Characteristics VCC 5V TA 25 C tr s 10 ns tf s 10 ns
Symbol
Parameter
Conditions
Min
VIN(MIN)(F)
VIN(MAX)(F)
FOPERATE
FIN Minimum Signal Input
FIN Maximum Signal Input
Operating Frequency Range
(Sine Wave Input)
AM and FM Inputs b40 C s TA s 85 C
AM and FM Inputs b40 C s TA s 85 C
VIN 100 mV rms
AM
b40 C s TA s 85 C
FM
1000
05
80
RIN(FM)
RIN(AM)
CIN
tEN1
AC Input Resistance FM
AC Input Resistance AM
Input Capacitance FM and AM
Minimum ENABLE High
Pulse Width
120 MHz VIN 100 mV rms
15 MHz VIN 100 mV rms
VIN 120 MHz (FM) 15 MHz (AM)
600
1000
3
Typ
20
1500
6
625
Max
100
15
120
10
1250
Units
mV(rms)
mV(rms)
MHz
MHz
X
X
pF
ns
2
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