P1P40167MNTWG ON Semiconductor

P1P40167 1.8V, 4-PLL Low Power Clock Generator with Spread Spectrum Functional Description The P1P40167 is a high precision frequency synthesizer designed to P1P40167 Exposed Pad (EP) 16 15 14 13 VDD 1 12 VDDO VDD 2 11 37M P1P40167 3 10 VDDO 48M 4 9 VSS VDD 56 7 8 Figure 2. Pin Configuration (Top View) Table 1. PIN DESCRIPTION Pin# Pin Name Type Description 1 VDD Power 1.8 V power supply for Core 2 VDD Power 1.8 V power supply for Core 3 48M Output 48 MHz clock output. Has internal pull down resistor. 4 VDD Power 1.8 V power supply for Core 5 22M Output 22.5792 MHz clock output. Has internal pull down resistor. 2 6 SCLK Input I C bus Clock input, internal pull up resistor 2 7 SDATA Input / I C bus Data pin, Internal pullup resistor Output 8 22/24M Output 24.576 MHz or 22.5792 MHz clock output. Has internal pull down resistor. 9 VSS Power 0 V device ground 10 VDDO Power 1.8 V power supply for Output Clocks 11 37M Output 37 MHz clock output. Has internal pull down resistor. 12 VDDO Power 1.8 V power supply for Output Clocks 13 VSS Power 0 V device ground 14 27M Output Buffered 27 MHz reference clock output. Has internal pull down resistor. 15 XOUT Output Crystal connection. If using an external reference, this pin must be left unconnected. 16 XIN Input Crystal connection. Connect to 27 MHz crystal or External clock input EP The Exposed Pad (EP) on the QFN16 package bottom is thermally connected to the die for improved heat transfer out of package. The pad is electrically connected to the die, and can be electrically and thermally connected to device ground on the PC board.