Features: • Best--in--Class Output Jitter Performance, ±20 ps Peak--to--Peak• 50 MHz to 800 MHz Programmable Differential PECL Outputs• Fully Integrated Phase--Lock--Loop with Internal Loop Filter• Parallel Interface for Programming Counter and Output Dividers During Poweru...
NBC12439A: Features: • Best--in--Class Output Jitter Performance, ±20 ps Peak--to--Peak• 50 MHz to 800 MHz Programmable Differential PECL Outputs• Fully Integrated Phase--Lock--Loop with Inte...
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Symbol | Parameter | Condition 1 | Condition 2 | Rating | Unit |
VCC | Positive Supply | GND = 0 V | 6 | V | |
VI | Input Voltage | GND = 0 V | VIVCC | 6 | V |
Iout | Output Current | Continuous Surge |
50 100 |
mA mA | |
TA | Operating Temperature Range NBC12429 NBC12429A |
0 to 70 -40 to +85 |
°C | ||
Tstg | Storage Temperature Range | -65 to +150 | °C | ||
JA | Thermal Resistance (Junction--to--Ambient) | 0 lfpm 500 lfpm |
PLCC--28 PLCC--28 |
63.5 43.5 |
°C/W °C/W |
JC | Thermal Resistance (Junction--to--Case) | Standard Board | PLCC--28 | 22 to 26 | °C/W |
JA | Thermal Resistance (Junction--to--Ambient) | 0 lfpm 500 lfpm |
LQFP--32 LQFP--32 |
80 55 |
°C/W °C/W |
JC | Thermal Resistance (Junction--to--Case) | Standard Board | LQFP--32 | 12 to 17 | °C/W |
JA | Thermal Resistance (Junction--to--Ambient) | 0 lfpm 500 lfpm |
QFN--32 QFN--32 |
31 27 |
°C/W °C/W |
JC | Thermal Resistance (Junction--to--Case) | 2S2P | QFN--32 | 12 | °C/W |
Tsol | Wave Solder Pb Pb--Free |
<3 sec @ 248°C <3 sec @ 260°C |
265 265 |
°C |
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended OperatingConditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
The NBC12439 and NBC12439A are general purpose, PLL based synthesized clock sources. The VCO will operate over a frequency range of 400 MHz to 800 MHz. The VCO frequency is sent to the N--output divider, where it can be configured to provide division ratios of 1, 2, 4 or 8. The VCO and output frequency can be programmed using the parallel or serial interfaces to the configuration logic. Output frequency steps of 16 MHz, 8 MHz, 4 MHz, or 2 MHz can be achieved using a 16 MHz crystal, depending on the output divider settings. The NBC12439 and NBC12439A PLL loop filter is fully integrated and does not require any external components.