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NB3H5150: Clock Generator, Multi-Rate, Low Noise 2.5V / 3.3V

The NB3H5150 is a high performance Multi−Rate Clock generator which simultaneously synthesizes up to four different frequencies from a single PLL using a 25 MHz input reference. The reference frequency can be provided by a crystal, LVCMOS/LVTTL, LVPECL, HCSL or LVDS differential signals. The REFMODE pin will select the reference source. Three output banks (CLK1A/CLK1B to CLK3A/CLK3B) produce user selectable frequencies of: 25 MHz, 33.33 MHz, 50 MHz, 100 MHz, 125 MHz, or 156.25 MHz and have ultra−low noise/jitter performance of less than 0.3 ps. The fourth output bank (CLK4A/CLK4B) can produce the following integer and FRAC−N frequencies in pin−strap mode: 33.33 MHz, 66.66 MHz, 100 MHz, 106.25 MHz, 125 MHz, 133.33 MHz, 155.52 MHz, 156.25 MHz or 161.1328 MHz. More programmable frequencies are available via the I2C interface with jitter performance of less than 1 ps. Detailed registered descriptions will be available in a future application note. Each output block can create two single−ended in−phase LVCMOS outputs or one differential pair of LVPECL outputs. Each of the four output blocks is independently powered by a separate VDDO, 2.5 V/3.3 V for LVPECL, 1.8 V/2.5 V/3.3 V for LVCMOS. The serial (I2C and SMBUS) interface can program a variety of functions including the frequencies and output levels of each divider block which can be individually enabled and disabled.

Software (4)

Package Drawings (1)

Application Notes (1)

Simulation Models (1)

Evaluation Board Documents (3)

Data Sheets (1)

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