XC25BS8
Series
■GENERAL
DESCRIPTION
ETR1506-003
Ultra Small PLL Clock Generator ICs with Built-In Divider/Multiplier Circuits
Preliminary
The XC25BS8 series is an ultra small PLL clock generator IC which can generate a high multiplier output up to 4095 from an input frequency as
low as 8kHz.
The series includes a divider circuit, phase/frequency comparator, charge pump, and VCO so it is possible to configure a fully
operational circuit with a few external components like one low-pass filter capacitor. The Input divider ratio (M) can be selected from a range of 1
to 2047, the output divider ratio (N) can be selected from a range of 1 to 4095 and they are set internally by using laser timing technologies.
Output frequency (fQ0) is equal to input clock frequency (f
CLKin
) multiplied by N/M. Output frequency range is 1MHz to 100MHz. Reference clock
from 8kHz to 36MHz can be input as the input clock. The IC stops operation and current drain is suppressed when a low level signal is input to the
CE pin which greatly reduces current consumption and produces a high impedance output.
The setting of the input divider ratio (M), output divider ratio (N), and charge pump current (Ip) are factory fixed semi-custom. Please advise your
Torex sales representative of your particular input/output frequency and supply voltage specifications so that we can see if we will be able to
support your requirements. The series is available in small SOT-26W and USP-6C.
■
APPLICATIONS
●
●
●
●
●
●
●
●
●
■FEATURES
Input Frequency Range
Output Frequency Range
Output Divider (N) Range
Input Divider (M) Range
Operating Voltage Range
Low Power Consumption
Small Packages
Clock for controlling a Imaging dot (LCD)
DSC (Digital still camera)
DVC (Digital video camera)
PND (Car navigation system)
UMPC (Ultra Mobile Personal Computer)
SSD (Solid State Disk)
Digital Photo Frame
Microcomputer and HDD drives
Cordless phones & Wireless communication
equipment
●
Various system clocks
: 8kHz ~ 36MHz
(*1)
: 1MHz ~ 100MHz
(f
Q0
=f
CLKin
× N/M)
(*1)
: 1 ~ 4095
(*1)
: 1 ~ 2047
(*1)
: 2.50V ~ 5.50V
(*1)
: 10μA MAX. when stand-by
(*2)
: SOT-26W, USP-6C
*1: The series are semi-custom products. Specifications for each
product are limited within the above range. The input frequency
range is set within ±5％ of customer’s designated typical frequency.
Please note that setting of your some requirements may not be
possible due to the specification limits of this series.
*2: When the IC is in stand-by mode, the output becomes high impedance
and the IC stops operation.
■TYPICAL
APPLICATION CIRCUIT
■
TYPICAL PERFORMANCE
CHARACTERISTICS
PLL Output signal jitter 2 (t
J2
) (synchronous to an input signal)
XC25BS8001xx (610 multiplier, input 15kHz (TYP.))
*1
Input Signal
f
CLKin
Output jitter
t
J2
=20(ns)
Output Signal
f
Q0
*1: C
IN
(by-pass capacitor, 0.1μF) and LPF should be connected
to the IC as close as possible.
1/14
XC25BS8
Series
■PIN
CONFIGURATION
Q0
6
V
SS
5
CE
4
V
DD
6
1 Q0
2 V
SS
3 CE
* The dissipation pad (TAB) of the
bottom view of the USP-6C package
should be connected to the V
SS
(No. 2)
pin.
LPF 5
CLKin 4
1
2
3
V
DD
LPF
CLKin
SOT-26W
(TOP VIEW)
USP-6C
(BOTTOM VIEW)
■PIN
ASSIGNEMNT
PIN NUMBER
SOT-26W
6
5
4
3
2
1
USP-6C
1
2
3
4
5
6
PIN NAME
Q0
V
SS
CE
CLKin
LPF
V
DD
FUNCTION
Clock Output
Ground
Stand-by Control
(*)
Reference Clock Signal Input
Device connection for Low Pass Filter
Power Input
■
FUNCTION LIST
CE
Q0
'H''
Signal Output
'L'' or OPEN
High Impedance
*H: High level input
L: Low level input
（stand-by
mode）
2/14
XC25BS8
Series
■
PRODUCT CLASSIFICATION
●Ordering
Information
XC25BS8①②③④⑤
DESIGNATOR
①②③
④
⑤
DESCRIPTION
Product Number
Packages
Device Orientation
SYMBOL
001~
M
E
R
L
DESCRIPTION
: Serial number based on internal standards
e.g. product number 001→①②③=001
: SOT-26W
: USP-6C
: Embossed tape, standard feed
: Embossed tape, reverse feed
■BLOCK
DIAGRAM
V
SS
Q
0
Output
Buffer
CE
Rdn
1/N
Counter
VCO
Charge
Pump
Phase
Detector
1/M
Counter
V
DD
CLK½½
LPF
C1
C1：Low Pass Filter Ceramic Capacitor
（Please
set as an external components between LPF Pin and V
SS
）
Recommended components (1608 Type)；
C1：0.1μF ---- Taiyo yuden EMK107BJ104KA
■ABSOLUTE
MAXIMUM RATINGS
PARAMETER
Supply Voltage
CLKin Pin Input Voltage
CE Pin Input Voltage
Q0 Pin Output Voltage
Q0 Pin Output Current
Power Dissipation
SOT-26W
USP-6C
SYMBOL
V
DD
V
CK
V
CE
V
Q0
I
Q0
Pd
Topr
Tstg
RATINGS
V
SS
- 0.3
½
V
SS
+ 7.0
V
SS
- 0.3
½
V
DD
+ 0.3
V
SS
- 0.3
½
V
DD
+ 0.3
V
SS
- 0.3
½
V
DD
+ 0.3
± 50
250
100
-40
½+85
-55
½+125
V
V
V
V
Ta=25℃
UNITS
mA
mW
mW
℃
℃
Operating Temperature Range
Storage Temperature Range
3/14
XC25BS8
Series
■ELECTRICAL
CHARACTERISTICS
●Characteristics
example by product series
*1: The chart below introduces the products with typical specification characteristics.
*2: For other part number with other input-output frequency or multiplication, please ask Torex sales contacts.
*3: The series are semi-custom products. Specifications for each product are limited within this catalog range.
The input frequency range is set within ±5% of customer’s designated typical frequency.
XC25BS8001xx（610 multiplication)
PARAMETER
Input Frequency
Multiplier Ratio
PLL Output Frequency
XC25BS8002xx（1220 multiplication)
PARAMETER
Input Frequency
Multiplier Ratio
PLL Output Frequency
XC25BS8003xx（256 multiplication)
PARAMETER
Input Frequency
Multiplier Ratio
PLL Output Frequency
XC25BS8004xx（4 multiplication)
PARAMETER
Input Frequency
Multiplier Ratio
PLL Output Frequency
XC25BS8005xx（8 multiplication)
PARAMETER
Input Frequency
Multiplier Ratio
PLL Output Frequency
SYMBOL
f
CLKin
N/M
f
Q0
MIN.
-
-
-
TYP.
9.000
8
72.000
MAX.
-
-
-
UNITS
MHz
Multiplier
MHz
SYMBOL
f
CLKin
N/M
f
Q0
MIN.
-
-
-
TYP.
20.000
4
80.000
MAX.
-
-
-
UNITS
MHz
Multiplier
MHz
SYMBOL
f
CLKin
N/M
f
Q0
MIN.
-
-
-
TYP.
48.000
256
12.288
MAX.
-
-
-
UNITS
kHz
Multiplier
MHz
SYMBOL
f
CLKin
N/M
f
Q0
MIN.
-
-
-
TYP.
15.000
1220
18.300
MAX.
-
-
-
UNITS
kHz
Multiplier
MHz
SYMBOL
f
CLKin
N/M
f
Q0
MIN.
-
-
-
TYP.
15.000
610
9.150
MAX.
-
-
-
UNITS
kHz
Multiplier
MHz
4/14
XC25BS8
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
●Recommended
Operating Conditions: XC25BS8001xx (610 multiplication, Input 15kHz (TYP.)) 5.0V (TYP.)
Tested below Ta=25 C
O
PARAMETER
Supply Voltage 5.0V
Input Frequency
Multiplier Ratio
Output Frequency
Capacity Overload
(*3)
Output Start Time
(*2)(*3)
NOTE:
SYMBOL
V
DD
f
CLKin
N/M
f
Q0
CL
t
START
CONDITIONS
5.0V (TYP.) operation
(*1)
MIN.
4.50
14.250
610
8.693
-
0.05
MAX.
5.50
15.750
96.075
15
20
UNITS
V
kHz
MHz
pF
ms
Typical value is shown
(*1)
(*1)
f
CLKin
＝14.250kHz
*1: The values are measured when a capacitor C
IN
=0.1μF is connected between V
DD
and V
SS
pins,
between LFP and V
SS
pins.
a capacitor C1=0.1μF is connected
*2: It is a time to get stable output signal from Q0 pin after the CE pin is turned on while applying supply voltage to the V
DD
pin and applying
the input signal to the CLKin pin.
*3: Values indicated are design values which are not guaranteed 100%.
●DC
Characteristics: XC25BS8001xx (610 multiplication, Input 15kHz (TYP.) ) 5.0V (TYP.)
PARAMETER
H Level Input Voltage
L Level Input Voltage
H Level Input Current
L Level Input Current
H Level Output Voltage
L Level Output Voltage
Supply Current 1
Supply Current 2
CE H Level Voltage
CE L Level Voltage
CE Pull-Down Resistance 1
CE Pull-Down Resistance 2
Output Off Leak Current
SYMBOL
V
IH
V
IL
Ii
H
Ii
L
V
OH
V
OL
I
DD1
I
DD2
V
CEH
V
CEL
Rdn1
Rdn2
I
OZ
CE= V
DD
CE= 0.1*V
DD
V
DD
=5.50V，CE= 0.0V
V
CLKin
=V
DD
-0.5V
V
CLKin
=0.5V
V
DD
=4.50V，IOH=-8mA
V
DD
=4.50V，IOL= 8mA
V
DD
=5.50V，CE= 5.50V
V
DD
=5.50V，CE= 0.0V
CONDITIONS
MIN.
4.00
-
-
-5.0
3.60
-
-
-
4.00
-
0.1
2
-
TYP.
-
-
-
-
-
-
4.0
-
-
-
0.4
20
-
MAX.
-
1.00
5.0
-
-
0.65
8.0
20
-
1.00
0.8
40
10
UNITS
V
V
μA
μA
V
V
mA
μA
V
V
MΩ
kΩ
μA
Ta=25℃
CIRCUIT
①
①
②
②
③
③
④
④
①
①
⑤
⑤
⑥
NOTE:
TEST CONDITION: V
DD
=5.0V, f
CLKin
=15kHz, C1=0.1μF, Multiplier ratio=610, No load
●AC
Characteristics: XC25BS8001xx (610 multiplication, Input 15kHz (TYP.)) 5.0V (TYP.)
PARAMETER
Output Rise Time
(*1)
Output Fall Time
(*1)
Output Signal Duty Cycle
(*1)
PLL Output Signal Jitter 1
PLL Output Signal Jitter 2
NOTE:
TEST CONDITION: V
DD
=5.0V, fCLKin=15kHz, C1=0.1μF, Multiplier ratio=610, CL=15pF
*1: Values indicated are design values, which are not guaranteed 100%.
(*1)
(*1)
Ta=25℃
SYMBOL
t
R
t
F
Duty
t
J1
t
J
２
CONDITIONS
(20% ~ 80%)
(20% ~ 80%)
1σ (Output Period)
Peak to Peak (Output Tracking)
MIN.
-
-
45
-
-
TYP.
2.5
2.5
50
40
15.0
MAX.
5.0
5.0
55
-
-
UNITS
ns
ns
％
ps
ns
CIRCUIT
①
①
①
①
①
5/14
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