特長
- Dual differential 3.3V LVPECL outputs
- 4:1 Input Mux:One differential inputOne single-ended inputTwo crystal oscillator interfaces
- CLK, nCLK pair can accept the following differentialinput levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL
- Output frequency range: 120MHz to 375MHz
- Crystal input frequency range: 12MHz to 40MHz
- VCO range: 600MHz to 750MHz
- Supports Spread Spectrum Clocking (SSC)
- Parallel or serial interface for programming feedback dividerand output dividers
- RMS phase jitter at 166.6MHz, using a 22.222MHz crystal(12kHz to 30MHz): 1.33ps (typical), SSC - Off
- 3.3V supply mode
- 0°C to 75°C ambient operating temperature
- Available in lead-free (RoHS 6) package
説明
The 843034-06 is a general purpose, low phase noise LVPECL synthesizer which can generate frequencies for a wide variety of applications. The 843034-06 has a 4:1 input multiplexer from which the following inputs can be selected: one differential input, one single-ended input, or one of two crystal oscillators, thus making the device ideal for frequency translation or frequency generation. The 843034- 06 has dual LVPECL outputs that may be programmed for ÷2, ÷4 or ÷5 of the VCO frequency. The 843034-06 also supplies a buffered copy of the reference clock or crystal frequency on the single-ended REF_OUT pin which can be enabled or disabled (disabled by default). The output frequency can be programmed using either a serial or parallel programming interface. This device supports Spread Spectrum Clocking (SSC) for EMI reduction.
