DS8908 Datasheet, PDF (3/12 Pages) Texas Instruments – DS8908B AM/FM Digital Phase-Locked Loop Frequency Synthesizer

Absolute Maximum Ratings (Note 1)
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Supply Voltage
(V_CC1) (V_CCM)
7V
(V_CC2)
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
V_CC1
V_CC2
V_CCM
Temperature T_A
45
V_CC1 a 1 5
35
b40
55
15 0
55
a85
Units
V
V
V
C
DC Electrical Characteristics (Notes 2 and 3)
Symbol
Parameter
Conditions
Min
Typ Max Units
V_IH
Logical ‘‘1’’ Input Voltage
20
V
I_IH
V_IL
I_IL
I_OH
te ^VOL
I_CC1
le ^ICCM
I_OUT
Logical ‘‘1’’ Input Current
Logical ‘‘0’’ Input Voltage
V_IN e 2 7V
Logical ‘‘0’’ Input Current
Logical ‘‘1’’ Output Current
All Bit Outputs 50 Hz Output
Data Clock and ENABLE Inputs V_IN e 0V
V_OH e 5 5V
1 98 MHz Output
Logical ‘‘0’’ Output Voltage
All Bit Outputs
V_OH e 2 4V V_CCM e 4 5V
I_OL e 5 mA
50 Hz Output 1 98 MHz Output
1 98 MHz Output
Supply Current (V_CC1)
V_CCM Supply Current
Charge Pump Ougtput Current
I_OL e 250 mA
I_OL e 20 mA T_A ^l 70 C
I_OL e 20 mA T_A ^s 70 C
All Bit Outputs High
V_CCM e 5 5V All Other Pins Open
3 33k ^s R_PROG ^s 33 3k
I_OUT Measured between
Pin 17 and Pin 18
I_PROG e V_CC1 2 R_PROG
Pump Up
Pump Down
TRI-STATE
b20
b20
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
I_PROG a20 %
I_PROG a20 %
0
11 nA
o I_CC2
V_CC2 Supply Current
OP_VOH
s ^OPVOL
CPO_BIAS
Op Amp Minimum High Level
Op Amp Maximum Low Level
Charge Pump Bias Voltage
Delta
V_CCM e 5V V_CC1 e 5 5V V_CC2 e 15V
All Other Pins Open
V_CC1 e 4 5V I_OH e b750 mA
V_CC1 e 5 5V I_OL e 750 mA
CPO Shorted to Op Amp Output
CPO e TRI-STATE
Op Amp I_OL 750 mA vs b750 mA
67
V_CC2 b0 4
11 ^mA
V
06
V
100 mV
b _{AC Electrical Characteristics VCC e 5V TA e 25 C tr s 10 ns tf s 10 ns}
Symbol
Parameter
Conditions
Min Typ Max Units
V_IN(MIN)(F) F_IN Minimum Signal Input
O ^{VIN(MAX)(F) FIN Maximum Signal Input}
AM and FM Inputs b40 C ^s T_A ^s 85 C
AM and FM Inputs b40 C ^s T_A ^s 85 C
20 100 mV(rms)
1000 1500
mV(rms)
F_OPERATE Operating Frequency Range
V_IN e 100 mV rms
AM
05
15
MHz
(Sine Wave Input)
b40 C s T_A s 85 C
FM
80
120 MHz
R_IN(FM)
R_IN(AM)
C_IN
t_EN1
AC Input Resistance FM
AC Input Resistance AM
Input Capacitance FM and AM
Minimum ENABLE High
Pulse Width
120 MHz V_IN e 100 mV rms
15 MHz V_IN e 100 mV rms
V_IN e 120 MHz (FM) 15 MHz (AM)
600
X
1000
X
3
6
10
pF
625 1250
ns
2