3HM57-B-10.000R-C1.5 MERCURY UNITED ELECTRONICS, 3HM57-B-10.000R-C1.5 Datasheet

CRYSTAL OSCILLATOR, 10MHZ, SMD

3HM57-B-10.000R-C1.5

Manufacturer Part Number
3HM57-B-10.000R-C1.5
Description
CRYSTAL OSCILLATOR, 10MHZ, SMD
Manufacturer
MERCURY UNITED ELECTRONICS
Series
HM57r
Datasheet

Specifications of 3HM57-B-10.000R-C1.5

Operating Temperature Range
0°C To +70°C
Load Capacitance
15pF
Resonator Case
SMD
No. Of Pins
4
Crystal Output Logic
TTL/HCMOS
Frequency
10MHz
Supply Voltage
3.135V To 3.465V
Frequency Tolerance
± 50ppm
Oscillator Mounting
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
dB
come from the system clocks. Therefore, rather
than patch the problem with ferrite beads, EMI
filters, ground plane and metal shielding, the most
efficient and economic way to reduce the peak
radiation energy is to use the low EMI clock
oscillator.
oscillators, Mercury HM57 series spread spectrum
(dithered) clock oscillators can reduce EMI as
much as 12 dB. The beauty is it is a drop-in
replacement for your existing 5x7 clock oscillator.
No need to re-spin the board.
Applications
◘ Printers; Multiple function printers (MPCs)
◘ Digital copiers; PDAs
◘ Networking; LAN / WAN; Routers
◘ Storage systems (CD-ROM, VCD, DVD and HDD)
◘ Scanner; Modems; projectors
◘ Hand-held ID readers
Modulation Types
Down spread “D”. “D1” as an example
fo - (fo*1%)
3HM57 Group “R”
EMI reduction
and shorten your time to
The principle sources of the EMI problem
Compared with the conventional clock
3HM57 reduces your EMI
Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail:
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail:
fc
Output amplitude (dB) vs frequency span (MHz)
Conventional
Clock
Frequency
MERCURY
market.
Spread
spectrum
clock
A DROP-IN REPLACEMENT SOLUTION FOR YOUR
EMI / EMC COMPLIANCE PROBLEM
Center spread “C”. “C0.5” as an example
fo - (fo*0.5%)
Page 1 of 5
EMI reduction
www.mercury-crystal.com
fo=fc
◘ Embedded systems; Electrical musical instrument
◘ Automotive; GPS car navigation systems
◘ LCD PC monitors / LCD TVs
◘ ADSL; PCMCIA
◘ Still Digital cameras (SDCs)
fo + (fo*0.5%)
Conventional
Clock
sales-us@mercury-crystal.com
sales-tw@mercury-crystal.com
Spread Spectrum Clock (SSC):
Unlike the conventional clock, the
mode energy of a spread spectrum
clock is spread over a wider
bandwidth, resulting from the
frequency modulation technique. The
modulation carrier frequency is in the
KHz range which makes the
modulation process transparent to the
oscillator frequency. The controlled
modulation process can be on all of
one side of the nominal frequency
(down spread) or 50% up and 50%
down (center spread). The down
spread is preferred if over-clocking is
a problem to the system.
April. 19. 2005
Rev. G

Related parts for 3HM57-B-10.000R-C1.5

3HM57-B-10.000R-C1.5 Summary of contents

Page 1

... EMI as much as 12 dB. The beauty drop-in replacement for your existing 5x7 clock oscillator. No need to re-spin the board. 3HM57 reduces your EMI and shorten your time to Applications ◘ Printers; Multiple function printers (MPCs) ◘ Digital copiers; PDAs ◘ ...

Page 2

... General Specifications: at Ta=+25°C, C Mercury Model 3HM57 Group “R” Frequency Range Spread Type Total % Spread Percentage 1% (Part number suffix) 3% (tolerance : ±2% of the total % EMI Reduction -9 dBc min. 100 MHz at C0.5 (Reduction is applied to the -15 dBc min. 100 MHz at C1.5 entire spectrum) With respect to the dB level when no modulation ...

Page 3

... Please visit www.mercury-crystal.com Instantaneous Frequencies (Example of 100 MHz) If over-clocking is a problem to your system please choose down spread Total Spread % Down Range 1 % -10,000 ppm 99.000000 3 % -30,000 ppm 97.000000 Group 3HM57-BT-32.768R-C0.5 Frequency (MHz) Down Spread Instantaneous Frequency min. max. Up Range - ppm 100.000000 - 3. ppm 100 ...

Page 4

... No Modulation and at Center Spread 1.5%: 13.1 dBc EMI reduction No Modulation EMI Reduction of 3HM57 100 MHz at C0.5 and C1.5 (main mode only) TS305B Spectrum analyzer W aveform @ SSC modulation 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 100 Frequency[M Hz] TS305B Spectrum analyzer W aveform @ SSC=+/-0.5% C0.5 (center spread ± ...

Page 5

... EMI Reduction of 3HM57 100 MHz at C0.5 and C1.5 (the whole spectrum ctru lyze r W ave Modulation cy ectru lyzer form @ /-0.5 % C0.5 (center spread ±0.5 -40 -50 -60 -70 - For more technical information please visit technical note TN-020 (Title: “Low EMI Spread Spectrum Clock Oscillators”). ...

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