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Número de pieza | XC25BS8 | |
Descripción | Ultra Small PLL Clock Generator ICs | |
Fabricantes | Torex Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de XC25BS8 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
No Preview Available ! XC25BS8 Series
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ETR1506-007a
Ultra Small PLL Clock Generator ICs with Built-In Divider/Multiplier Circuits
■GENERAL DESCRIPTION
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 (fCLKin) 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
● 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
■FEATURES
Input Frequency Range
: 8kHz ~ 36MHz (*1)
Output Frequency Range
Output Divider (N) Range
Input Divider (M) Range
Operating Voltage Range
Low Power Consumption
: 1MHz ~ 100MHz
(fQ0=fCLKin × N/M) (*1)
: 1 ~ 4095 (*1)
: 1 ~ 2047(*1)
: 2.50V ~ 5.50V (*1)
: 10μA MAX. when stand-by (*2)
Small Packages
: 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
*1
■ TYPICAL PERFORMANCE
CHARACTERISTICS
PLL Output signal jitter 2 (tJ2) (synchronous to an input signal)
XC25BS8001xx (610 multiplier, input 15kHz (TYP.))
Input Signal
Output jitter
tJ2=20(ns)
Output Signal
*1: CIN (by-pass capacitor, 0.1μF) and C1 ( LPF capacitor, 0.1μ
F) should be connected as close as possible to the IC. Please
refer to the pattern reference layout schematics on page 8 for
details.
1/14
1 page XC25BS8
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■ELECTRICAL CHARACTERISTICS
●Recommended Operating Conditions: XC25BS8050xx (4 multiplication, Input 3MHz (TYP.)) 3.3V (TYP.)
PARAMETER
Supply Voltage 3.3V
Input Frequency
Multiplier Ratio
Output Frequency
Load Capacity (*3)
Output Start Time (*2)(*3)
SYMBOL
VDD
fCLKin
N/M
fQ0
CL
tSTART
CONDITIONS
3.3V (TYP.) operation
(*1)
Typical value is shown (*1)
(*1)
fCLKin=2.000MHz
MIN.
2.97
2.000
8.000
-
0.05
Tested below Ta=25OC
MAX.
UNITS
3.63 V
18.500
4
74.000
15
20
MHz
-
MHz
pF
ms
NOTE:
*1: The values are measured when a capacitor CIN=0.1μF is connected between VDD and VSS pins, a capacitor C1=0.1μF is connected
between LFP and VSS pins
*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 VDD pin and applying the
input signal to the CLKin pin.
*3: Values indicated are design values which are not guaranteed 100%.
●DC Characteristics: XC25BS8050xx (4 multiplication, Input 3MHz (TYP.)) 3.3V (TYP.)
PARAMETER
SYMBOL
CONDITIONS
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
VIH
VIL
IiH
IiL
VOH
VOL
IDD1
IDD2
VCEH
VCEL
Rdn1
Rdn2
IOZ
VCLKin=VDD-0.3V
VCLKin=0.3V
VDD=2.97V,IOH=-4mA
VDD=2.97V,IOL= 4mA
VDD=3.63V,CE= 3.63V
VDD=3.63V,CE= 0.0V
CE= VDD
CE= 0.1*VDD
VDD=3.63V,CE= 0.0V
NOTE:
TEST CONDITION: VDD=3.0V, fCLKin=3MHz, C1=0.1μF, Multiplier ratio=4, No load
MIN.
2.70
-
-
-3.0
2.38
-
-
-
2.70
-
0.1
5
-
TYP.
-
-
-
-
-
-
5.0
-
-
-
0.6
30
-
MAX.
-
0.60
3.0
-
-
0.45
10.0
10
-
0.45
1.2
60
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
●AC Characteristics: XC25BS8050xx (4 multiplication, 3MHz(TYP.)) 3.3V (TYP.)
PARAMETER
Output Rise Time (*1)
Output Fall Time (*1)
Output Signal Duty Cycle (*1)
PLL Output Signal Jitter 1 (*1)
PLL Output Signal Jitter 2 (*1)
SYMBOL
tR
tF
Duty
tJ1
tJ2
CONDITIONS
(20% ~ 80%)
(20% ~ 80%)
1σ (Output Period)
Peak to Peak (Output Tracking)
MIN.
-
-
45
-
-
NOTE:
TEST CONDITION: VDD=3.3V, fCLKin=3MHz, C1=0.1μF, Multiplier ratio=4, CL=15pF
*1: Values indicated are design values, which are not guaranteed 100%.
TYP.
4.0
4.0
50
45
8.0
MAX.
8.0
8.0
55
-
-
UNITS
ns
ns
%
ps
ns
Ta=25℃
CIRCUIT
①
①
①
①
①
5/14
5 Page ■AC CHARACTERISTICS TEST WAVEFORM
1) Output Rise Time, Output Fall Time
Output Waveform
Q0 Output Signal Waveform
DUTY Test Level
XC25BS8
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2) Duty Cycle
tR
Output Waveform
Q0 Output Signal
Duty CyDclUe TMYeas測ure定mレentベLeルvel
tF
3) Output Start Time
CE Input Signal Waveform
Q0 Output Signal Waveform
Duty Cycle =(TW / T)×100(%)
tSTART
11/14
11 Page |
Páginas | Total 14 Páginas | |
PDF Descargar | [ Datasheet XC25BS8.PDF ] |
Número de pieza | Descripción | Fabricantes |
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