NJW1503A
- 1 -
PLL Synthesizer with 3-Wire Bus for TV Tuner
DESCRIPTION
The NJW1503A is a PLL frequency synthesizer especially designed
for TV and VCR tuning systems and consists of PLL circuit and a
prescaler which operates up to 1.0GHz, built into one chip.
The NJW1503A is controlled through a 3-wire bus.
FEATURES
Operating Voltage 5V
Low Operating Current : 15mA typ. @Vcc=5V
Prescaler accepts frequencies up to 1GHz on chip
3-wire bus controlled
Reference divider ratio automatic setting (512 or 1024)
34V max. tuning voltage output
Package Outline: SSOP16
BLOCK DIAGRAM
PACKAGE OUTLINE
NJW1503AV
BS0-BS3
BAND SW
4bit
4bit
Latch
VCC3
VCC1
5V
GND
CS
DAT
CLK
3Wire Bus
Receiver
15bit
Latch
8bit
Latch
Programmable
Divider 15bit
PreAMP
1/8
CP
VCC2
AMPOUT
HF IN
AMP
Phase
OUT
Phase
Comp
1/1024
1/512
(1/640)
Ref
Divider
X'tal
OSC
OSCOUT
XTAL
NJW1503A
- 2 -
ABSOLUTE MAXIMUM RATINGS (T
A
=25
C)
Parameter Symbol
Ratings
Unit
Supply Voltage (Vcc1,3)
Vcc1,Vcc3
-0.3 to +6.5
V
Supply Voltage (Vcc2)
Vcc2
-0.3 to +34
V
Input Voltage(except 3-wire bus)
Vi
-0.3 to Vcc+0.3
V
Output Voltage
(except 3-wire bus)
Vo
-0.3 to Vcc+0.3
V
3-Wire bus Input Voltage
V
seri
-0.3 to 6.5
V
Power Dissipation
P
D
300 mW
Operating Temperature Range
T
opr
-20 to +75
C
Storage Temperature Range
T
stg
-40 to +125
C
RECOMMENDED OPERATING CONDITION (T
A
=25
C)
Parameter Condition
Symbol
Min.
Typ.
Max.
Unit
Operating Voltage
Vcc1,Vcc3
V
+1
,V
+3
4.5 5
5.5 V
Operating Voltage
Vcc2
V
+2
0 32 34 V
X'tal Operating Range
f
xtal
3.15 4 4.05 MHz
HF Input Frequency
Input= -20dBm
f
hf
80 - 1000
MHz
Data Set-up Time
t
SET
2 - - uS
Clock Width Time
t
CLK
2 - - uS
Data Hold Time
t
HOLD
2 - - uS
CS Set-up Time
t
CSSET
10 -
- uS
CS Hold Time
Refer to 3-Wire bus Timing Chart
t
CSHLD
2 - - uS
Maximum Clock
Frequency
Refer to 3-Wire bus Timing Chart
F
CLKMAX
=1/T
CLKMAX
t
CLKMAX
-
- 100 KHz
3-Wire bus Timing Chart
V
IH
min(0.7 Vcc1) and V
IH
max(0.3 Vcc1)
DAT
CLK
T
CS
SET
T
CLK
HOLD
T
T
T
T
CLKMAX
CSSET CSHOLD
NJW1503A
- 3 -
ELECTRICAL CHARACTERISTICS (Vcc1,3=5V,Vcc2=32V,T
A
=25
C)
Parameter Condition
Symbol
Min.
Typ.
Max.
Unit
Operating Current 1
f
HF
=100MHz I
CC
6 15 23 mA
Operating Current 2
AMPOUT: Low Level
I
CC
2 - 1.6 - mA
AMP Input Current
Phase OUT :High Imp (2.5V)
I
IN
(-50) 0.1 (50) nA
AMP Output Current
ANP OUT : Low Level
AMP OUT Input=5V
I
OUT
- -
-2.5
mA
AMP Gain
f=1KHz
AV
40
50
60
dB
Phase Comparator
Current
Current Source
I
sourse
190 280 400 uA
Phase Comparator
Current
Current Sink
I
sink
-400 -280 -190 uA
Band
Switch
"L" Output Current
BS0=BS1=BS2=0.3V
I
OBS0-2L
-5.0 -0.5 0.0 mA
"H" Output Current
BS0=BS1=BS2=4.7V
I
OBS0-2H
11.0 15.0 - mA
"L" Output Current
BS=0.3V
I
OBS3L
-6.0 -1.0 -0.4 mA
"H" Output Current
BS3=4.7V
I
OBS3H
0.7 3.5 - mA
3-Wire
bus
"H" Input Current
CLK, DAT, CS Terminal
I
IN
H -5 0 5 uA
"L" Input Current
CLK, DAT, CS Terminal
I
IN
L -5 0 5 uA
"H" Input Voltage Range
CLK, DAT, CS Terminal
V
IH
4.0 - 5.0 V
"L" Input Voltage Range
CLK, DAT, CS Terminal
V
IL
0 - 1.0
V
NJW1503A
- 4 -
TEST CIRCUIT
16
HF
GN
D
V
CC1
V
CC3
BS3
BS2
BS1
BS0
XT
A
L
CS
DA
T
CL
K
OS
C
O
U
T
V
CC2
AM
P
O
U
T
CP
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
4MHz
100
100
100
34V
VS3
5V
2mV
1kHz
VS2
2.5V
VS1
4.7V or 0.3V
COUNTER
5V
50
SG
-20dBm
1n
18p
270
316k
CS
DAT
CLK
NJW1503A
- 5 -
Serial Bus Data Format (3-Wire bus)
1. Bus protocol for18bit
B3 B2 B1 B0 N13 N12 N11 N10 N9 N8 N7 N6 N5 N4 N3 N2 N1 N0
Reference divider : f
xtal
1/512
2. Bus protocol for19bit
B3 B2 B1 B0 N14 N13 N12 N11 N10 N9 N8 N7 N6 N5 N4 N3 N2 N1 N0
Reference divider : f
xtal
1/1024
3. Bus protocol for Test (27bit)
B3 B2 B1 B0 N14 N13 ...N1 N0 T7 T6 T5 T4 T3 T2 T1 T0
B0 to B3 : Control of Band Switch
N0 to N14 : Control of Programmable Divider N14=MSB N0=LSB
Division ratio : N=2
14
N14+2
13
N13++2
1
N1+N0
Maximum division ratio 32767
Minimum division ratio 256
T0 to T7 : Control bit of test
Bit T0: Charge Pump Current
T0
Charge Pump Current
Conditions
0 280uA
Normal,
Default
1 60uA Test
Bit T1 and T2: Output function of Phase Comparator
T2 T1 Phase
Comparator Conditions
0 0 Normal
Operation
Normal,
Default
0 1
Source
Test
1
1 High
Impedance Test
1
0 Sink Test
Bit T4: Band Switch Test
T4 Band
Switch Conditions
0 Normal
Operation
Normal,
Default
1 Test Test
Bit T5 and T6: Reference Divider
T6 T5 Reference
Divider Condition
0 0
1/512
Normal,
Default
0 1
1/1024
1
* 1/640
* : don't care; 0 or 1
The 18bit and 19bit is automatic selector of the reference divider.
T3: unassigned, undefined
(Note)
Default : Power on reset
NJW1503A
- 6 -
TERMINAL CHARACTERISTICS
No. Symbol
Typ.DC
Voltage (V)
Equivalent Circuit
Function
1 HF 3.2
1
High Frequency
Signal Input
2 GND
0
GND
3 VCC1
5
2
3
Power Supply
4 VCC3
5
2
4
Band Switch
Power Supply
5 BS3
0
5
Band Switch
6
7
8
BS2
BS1
BS0
0
6,7,8
Band Switch
9 CP
-
9
Charge Pump
Output
NJW1503A
- 7 -
No. Symbol
Typ.DC
Voltage (V)
Equivalent Circuit
Function
10 AMPOUT
-
Amplifier
Output
11 VCC2
32
10
11
Amplifier
Power Supply
12 OSCOUT
4.1
12
Reference Oscillator
Output
13 CLK
-
13
Clock Input
(3-Wire bus)
14 DAT
-
14
Data Input
(3-Wire bus)
15 CS
-
15
Enable Input
(3-Wire bus)
16 XTAL
3.3
16
Crystal Input
NJW1503A
- 8 -
TYPICAL CHARACTERISTICS
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
VCC1 Supply Current Curve
Supply Current [mA]
VCC1 Supply Voltage [V]
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
0
200
400
600
800
1000
1200
1400
HF Input Sensitivity Curve
Input Level [dBm]
Input Frequency [MHz]
0.0
10.0
20.0
30.0
40.0
50.0
3.0
3.5
4.0
4.5
5.0
BS0-BS2 Output Current Curve
Output Current [mA]
Output Voltage [V]
VCC1=VCC3=5.0V
0.0
5.0
10.0
15.0
20.0
25.0
3.0
3.5
4.0
4.5
5.0
BS3 Output Current Curve
Output Current [mA]
Output Voltage [V]
VCC1=VCC3=5.0V
MEMO
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
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