TOREX XC221A

Series
PLL Clock Generator ICs with Built-In Divider/Multiplier Circuits (For Low Frequency range)
1
◆CMOS Low Power Consumption
■Applications
◆Input Frequency
: 12KHz to 35MHz
●Crystal Oscillation Modules
◆Divider Ratio
: 1, 3 ~ 2047 divisions
●Personal Computers
◆Multiplier Ratio
(laser trimming)
●Portable Audio Systems
: 6 ~ 2047 multiplications
●PDAs
●Various System Clocks
(laser trimming)
◆Comparative Frequency : 12KHz ~ 500KHz
◆Output Frequency : 3MHz ~ 30MHz
◆Mini Mold SOT-26 Package
■General Description
■Features
The XC25BS5 series are high frequency, low power consumption PLL
clock generator ICs with divider circuit & multiplier PLL circuit.
Laser trimming gives the option of being able to select from divider ratios
(M) of 1,3 to 2047 and multiplier ratios (N) of 6 to 2047.
Output frequency (Q0) is equal to reference oscillation (fCLKin)
multiplied by N/M, within a range of 3MHz to 30MHz. Q1 output is
selectable from input reference frequency (f0), input reference
frequency/2 (f0/2), ground (GND), and comparative frequency (f0/M).
Further, comparative frequencies, within a range of 12KHz to 500KHz,
can be obtained by dividing the reference oscillation. By halting
operation via the CE pin, consumption current can be controlled and
output will be one of high-impedance.
■Pin Configuration
CE
1
6
CLKin
VSS
2
5
VDD
Q0
3
4
Output Frequency
: 3MHz ~ 30MHz (Q0=fCLKin × N/M)
Reference Oscillation (fCLKin)
: 12KHz ~ 35MHz
Divider Ratio (M)
: Selectable from divisions of 1, 3 ~ 2047
Multiplier Ratio (N) : Selectable from multiplications of 6 ~ 2047
Output
: 3-State
Q1 output selectable from input reference
oscillation, input reference oscillation/2,
GND, comparative frequency.
Operating Voltage Range: 2.97V ~ 5.5V
Low Power Consumption
: CMOS (stand-by function included)*1
Ultra Small Package : SOT-26 mini mold
*1 High output impedance during standby
■ Pin Assignment
PIN NUMBER PIN NAME
Q1
FUNCTION
1
CE
Chip Enable
2
VSS
GND
3
Q0
PLL Output
SOT-26
(TOP VIEW)
4
Q1
■Function List
5
VDD
Power Supply
●CE, Q0/Q1 Pin Function
6
CLKin
Reference Clock Input
CE
Reference Oscillation, Reference
Oscillation/2, GND, or Comparative
Frequency Output
FUNCTION
"H"
Q0, Q1clock output
"L"
Standby. Ouput pin = high impedance
Open
Standby. Ouput pin = high impedance
"H" = High level
(VSS pin pull down due to IC's internal resistor)
"L" = Low level
95
XC25BS5
Series
■Product Classification
●Ordering Information
XC25BS5 qwert
DESTINATION
1
DESCRIPTION
Denotes Product Number
(Based on internal standards)
e.g. Product Number 001 → qwe = 001
Package
M : SOTー26
Device Orientation
R : Embossed Tape : Standard Feed
L : Embossed Tape : Reverse Feed
■Packaging Information
●SOT-26
+0.1
0.15 -0.05
+0.1
0.4 -0.05
(0.5)
+0.2
-0.1
0.4
(0.95)
1.9±0.2
2.9±0.2
96
0.2min
1.6
2.8±0.2
0∼0.1
+0.1
-0.05
1.1±0.1
XC25BS5
Series
■Marking
6
5
4
qRepresents the Series name
MARK
qwer
1
2
5
3
SOT-26
(TOP VIEW)
1
weRepresents the second and third figure
of the Product Number.
MARK
w
e
0
7
rRepresents the Assembly Lot No.
(Based on internal standards)
■Block Diagram
VDD
11 bit PLL
(×N)
1/M
Counter
Q0
CLKin
CE
Fuse
Select
1
2
VSS
Q1
■Absolute Maximum Ratings
Ta = 25℃
SYMBOL
CONDITIONS
UNITS
Supply Voltage
VDD
VSS-0.3∼VSS+7.0
V
CLKin Pin Voltage
VCK
VSS-0.3∼VDD+0.3
V
CE Pin Voltage
VCE
VSS-0.3∼VDD+0.3
V
Q0 Pin Voltage
VQ0
VSS-0.3∼VDD+0.3
V
Q1 Pin Voltage
VQ1
VSS-0.3∼VDD+0.3
V
Q0 Output Current
IQ0
± 50
mA
Q0 Output Current
IQ1
± 50
mA
Power Dissipation
PD
150
mW
Ambient Temp.
Topr
- 30∼ +80
℃
Storage Temp.
Tstg
- 40∼ +125
℃
PARAMETER
97
XC25BS5
Series
■ Frequency Configuration : Example 1
1
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNITS
Input Frequency
fCLKin
11.0000
-
16.9344
MHz
Multiplier/Divider Ratio
N/M
-
1.594
-
-
PLL Output Frequency
fQ0
17.5383
-
27.0000
MHz
Q1 Output Frequency
Q1
-
GND
●Electrical Characteristics (DC)
fCLKin = 16.9344MHz, Multiplier/Divider Ratio = 1.594, Ta = 25°C, No Load
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNITS
Supply Voltage
VDD
CONDITIONS
2.97
3.3
3.63
V
Input Voltage "High"
VIH
2.7
-
-
V
Input Voltage "Low"
VIL
-
-
0.6
V
Input Current "High"
IIH
VCK = 3.3V
-
-
3.0
μA
Input Current "Low"
IIL
VCK = 0V
-3.0
-
-
μA
Output Voltage "High"
VOH
VDD = 2.97V,IOH = -8mA
2.5
-
-
V
Output Voltage "Low"
VOL
VDD = 2.97V,IOL = 8mA
-
-
0.4
V
Supply Current 1
IDD1
CE = 3.3V
-
3.0
6.0
mA
CE = 0V
Supply Current 2
IDD2
-
-
5.0
μA
CE "High" Voltage
VCEH
2.7
-
-
V
CE "Low" Voltage
VCEL
-
-
0.45
V
CE Pull down Resistance 1
Rp1
CE = 3.3V
0.5
1.5
2.5
MΩ
CE Pull down Resistance 2
Rp2
CE = 0.3V
20.0
50.0
80.0
KΩ
●Electrical Characteristics (AC)
O
fCLKin=16.9344MHz, Multiplier/Divider Ratio=1.594, Ta=25 C, CL=15pF
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
Output Rise Time
TTLH
VDD=3.3V(20% to 80%)*2
-
5.0
-
ns
Output Fall Time
TTHL
VDD=3.3V(20% to 80%)*2
-
5.0
-
ns
40
50
60
%
-
-
20
ms
-
40
-
ps
Duty Ratio
DUTY
Output Start Time
Ton
PLL Output Jitter
Tj
*2
1σ *2
UNITS
*2 R&D guarantee
98
XC25BS5
Series
■ Frequency Configuration : Example 2
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNITS
Input Frequency
fCLKin
52.0000
-
78.0000
kHz
Multiplier/Divider Ratio
N/M
-
256.000
-
-
PLL Output Frequency
fQ0
13.312
-
19.968
MHz
Q1 Output Frequency
Q1
-
GND
1
●Electrical Characteristics (DC)
fCLKin=78kHz, Multiplier/Divider Ratio=256, Ta=25°C, No Load
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNITS
Supply Voltage
VDD
2.97
3.3
3.63
V
Input Voltage "High"
VIH
2.7
-
-
V
Input Voltage "Low"
VIL
-
-
0.6
V
Input Current "High"
IIH
VCK=3.3V
-
-
3.0
μA
CONDITIONS
Input Current "Low"
IIL
VCK=0V
- 3.0
-
-
μA
Output Voltage "High"
VOH
VDD=2.97V,IOH= - 8mA
2.5
-
-
V
Output Voltage "Low"
VOL
VDD=2.97V,IOL=8mA
-
-
0.4
V
Supply Current 1
IDD1
CE=3.3V
-
2.0
4.0
mA
CE=0V
Supply Current 2
IDD2
-
-
5.0
μA
CE "High" Voltage
VCEH
2.7
-
-
V
CE "Low" Voltage
VCEL
-
-
0.45
V
CE Pull down Resistance 1
Rp1
CE=3.3V
0.5
1.5
2.5
MΩ
CE Pull down Resistance 2
Rp2
CE=0.3V
20.0
50.0
80.0
KΩ
●Electrical Characteristics (AC)
O
fCLKin=78KHz, Multiplier/Divider Ratio=256, Ta=25 C, CL=15pF
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
Output Rise Time
TTLH
VDD=3.3V(20% to 80%)*2
-
5.0
-
ns
Output Fall Time
TTHL
VDD=3.3V(20% to 80%)*2
-
5.0
-
ns
40
50
60
%
-
-
20
ms
-
20
-
ps
Duty Ratio
DUTY
Output Start Time
Ton
PLL Output Jitter
Tj
*2
1σ *2
UNITS
*2 R&D guarantee
99
XC25BS5
Series
■Typical Application Circuits
q Q1 Pin - reference oscillation, reference oscillation/2, comparative frequency.
Rq1
fQ1
fCLKin
6
1
5
4
XC25BS5
VDD
0.1μF
1
2
3
Rq0
R1
fQ0
C1
w Q1 Pin - GND
fCLKin
6
5
4
XC25BS5
VDD
0.1μF
1
2
R1
C1
3
Rq0
fQ0
■Note:
(1) Please insert a by-pass capacitor of 0.1µF.
(2) Rq0 and Rq1 are matching resistors. Their use is recommended in order to counter unwanted radiations.
(3) Please place a by-pass capacitor and matching resistors as close to the IC as possible. It may be that the output cannot be locked if the
by-pass capacitor is not close enough to the IC. Further, there is a possibility of unwanted radiation occurance between the resistor and
the IC pin if the matching resistor is not close enough to the IC.
(4) When selecting GND for the Q1 pin, although the output of Q1 pin is GND level, it is also recommended that the Q1 pin is connected to
GND pattern on the PCB.
(5) When the CE pin is not controlled by external signals, it is recommended that a time constant circuit of R1=1kΩ × C0.1µF be added for
stability.
(6) With this IC, output is achieved by dividing and multiplying the reference oscillation by means of the PLL circuit. In cases where this
output is further used as a reference oscillation of another PLL circuit, it may be that the final output signal's jitter increases, so all
necessary precautions should be taken to avoid this.
(7) It is recommended that a low noise power supply, such as a series regulator, be used for the supply voltage. Using a power supply such
as a switching regulator might lead to a larger jitter which in turn may lead to an inability to lock due to the ripple of the switching
regulator.
100
XC25BS5
Series
■Reference Land Pattern
q Q1 Pin - reference oscillation, reference oscillation/2, comparative frequency.
0.7
1.9
1.0
1
2.4
by-pass capacitor
C=0.1μF
matching resistor
(mm)
w Q1 Pin - GND
0.7
1.9
1.0
2.4
by-pass capacitor
C=0.1μF
matching resistor
(mm)
101
XC25BS5
Series
■AC Characteristic Waveforms
1) Output Rise Time / Output Fall Time
Output Waveform
0.8VDD
0.8VDD
1
DUTY Test Level
0.5VDD
0.2VDD
TW
TTLH
0.2VDD
TTHL
2) Duty Ratio
Output Waveform
DUTY Test Level
0.5VDD
TW
T
DUTY =(TW/T)
3) Output Start Time
VIH
CE Input
Ton
Output
(Hi-Z)
102
×100 (%)