Product specifications
Euroquartz - EQHM22C series - Low EMI Oscillator
DESCRIPTION:
EQHM22 series low EMI oscillators can reduce system EMI by 12dB. The oscillators are a ‘drop-in’ replacement for standard oscillators.
EMI reduction is achieved by the use of Spread Spectrum Technology whereby the mode energy is spread over a wider bandwidth. The modulation carrier frequency, operating in the kHz region, makes the process transparent to the oscillator frequency. There is a choice of modulation rates and spread to suit application requirements.
- Provides up to 12dB reduction in system EMI
- ‘Drop-in’ replacement for standard clocks
- Choice of modulation rate and spread
- Miniature package: 2.5 mm x 2.0 mm x 0.9mm
APPLICATIONS:
- Printers, Multiple Function Printers (MPCs)
- Digital Copiers; PDAs
- Networking: LAN/WAN; Routers
- Storage Systems (CD-ROM, VCD, DVD, HDD)
- Scanners; Modems; Projectors
- Embedded Systems
- Musical Instruments
- Automotive: GPS car navigation systems
- LCD PC Monitors; LSD TVs
- ADSL; PCMCIA
- Still Digital Cameras (SDCs)
SPECIFICATIONS:
- Model No: EQHM22 (Group ‘C’)
- Frequency Range: 16MHz to 40MHz
- Spread Types: See table below
- EMI Reduction*: 3dB to 12dB (typ.) For main mode
- Modulation Carrier Frequency: 20.9kHz min, 52.4kHz max. Frequency dependent
- Output Logic: CMOS
- Input Voltage: Vdd = +1.8VDC ±10%, Vdd = +2.5VDC ±10%, Vdd = +3.3VDC ±10%
- Frequency Stability**
-- Commercial (0~70°C): ±25ppm (Spec. code = ‘A’), ±50ppm (Spec. code = ‘B’), ±100ppm (Spec. code = ‘C’)
-- Industrial (-40~+85°C): ±25ppm (Spec. code = ‘D’), ±50ppm (Spec. code = ‘E’), ±100ppm (Spec. code = ‘F’)
- Output Voltage HIGH ‘1’: 90%Vdd
- Output Voltage LOW ‘0’: 10%Vdd
- Rise/fall Times: 10ns max. (1.8VDC), 7ns max. (2.5VDC), 7ns max. (3.3VDC)
- Load: 15pF
- Start-up Time: 1ms typical, 5ms max.
- Storage Temperature: -55° to +125°C
- Current Consumption: 1.8VDC 4mA (max.), 2.5VDC 5mA (max.), 3.3VDC 6mA (max.)
- Duty Cycle: 50%±10% (CL=15pF, 50%Vdd)
- Static Discharge Voltage: >2000V (per MIL STD 833)
- Ageing: ±5ppm /year max at Ta=25°C
- Packaging: EIA 16mm tape and reel, 1k per.
- Pad 1 Option: Output Enable/Disable. Output is high impedance when taken low. Output enable time 5ms max. Output disable time 100ns max.
Notes:
* EMI reduction is applied to the entire frequency spectrum.
** Frequency Stability parameter excludes modulation.
PART NUMBER CONFIGURATION:
- See datasheet
- Euroquartz Ltd product -
