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PDF XRK32510 Data sheet ( Hoja de datos )
| Número de pieza | XRK32510 | |
| Descripción | 3.3V PHASE-LOCK LOOP CLOCK DRIVER | |
| Fabricantes | Exar Corporation | |
| Logotipo |  |
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XRK32510
3.3V PHASE-LOCK LOOP CLOCK DRIVER WITH 10 CLOCK OUTPUTS
OCTOBER 2005
GENERAL DESCRIPTION
FEATURES
REV. 1.0.1
The XRK32510 is a high performance, low jitter, low
skew clock driver. The XRK32510 uses phase-lock
loop (PLL) tecnology to synthesize the CLK_IN signal
into 10 output signals (QA), synchronized in both
phase and frequency. XRK32510 features low skew,
low jitter and 50% duty cycle making it a perfect fit in
dual in line memory module (DIMM) board clocking,
PC133 SDRAM designs and other server
applications.
The 10 outputs can be disabled using the Output
Enable (OE) pin.
By connecting the Feedback Output (FB_OUT) signal
to the Feedback Input (FB_IN) signal, the
propagation delay from CLK_IN to the 10 buffered
Outputs is nearly zero.
• Spread Spectrum Clock Compatible
• Operating frequency range: 25MHz to 175MHz
• Low noise
• Low jitter internal PLL
• No external RC filter components required
• Meets or exceeds DPC133 registered DIMM
specification 1.1
• Output Enable (OE) pin can be used to disable the
CLCK_OUT pins
• Operating supply of 3.3V VDD
• Plastic 24 Pin TSSOP package
FIGURE 1. BLOCK DIAGRAM OF THE XRK32510
CLK_IN
FB_IN
AVDD
OE
Ref
PLL
0
1
FB_OUT
QA0
QA1
QA2
QA3
QA4
QA5
QA6
QA7
QA8
QA9
PRODUCT ORDERING INFORMATION
PRODUCT NUMBER
XRK32510CG
PACKAGE TYPE
24 Pin TSSOP
OPERATING TEMPERATURE RANGE
0°C to +70°C
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com
1 page  
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REV. 1.0.1
XRK32510
3.3V PHASE-LOCK LOOP CLOCK DRIVER WITH 10 CLOCK OUTPUTS
ELECTRICAL CHARACTERISTICS - INPUT AND SUPPLY
TA = 0 - 70°C, VDD= AVDD = 3.3V +/- 10% (unless otherwise stated)
SYMBOL
PARAMETER
MIN TYP MAX UNITS
VIH Input High Voltage
2
VDD +
0.3
V
VIL
Input Low Voltage
GND -
0.3
0.8 V
IIH Input High Current
0.1 100 µA
IIL Input Low Current
19 50 µA
IDD Operating Current
140 170 mA
CIN Input Capacitance
4 pF
CO Output Capacitance 8 pF
CONDITIONS
VIN = VDD
VIN = 0V
CL = 0pF, FIN = 66MHz
Logic Inputs
Logic Outputs
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet XRK32510.PDF ] | |
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