SN74LV4046A High-Speed CMOS Logic Phase-Locked Loop With VCO

Description

The SN74LV4046A is a high-speed silicon-gate CMOS device that is pin compatible with the CD4046B and the CD74HC4046. The device is specified in compliance with JEDEC Std 7.

The SN74LV4046A is a phase-locked loop (PLL) circuit that contains a linear voltage-controlled oscillator (VCO) and three different phase comparators (PC1, PC2, and PC3). A signal input and a comparator input are common to each comparator.

The signal input can be directly coupled to large voltage signals, or indirectly coupled (with a series capacitor) to small voltage signals. A self-bias input circuit keeps small voltage signals within the linear region of the input amplifiers. With a passive low-pass filter, the SN74LV4046A forms a second-order loop PLL. The excellent VCO linearity is achieved by the use of linear operational amplifier techniques. Various applications include telecommunications, digital phase-locked loop and signal generators.

features

• ESD Protection Exceeds JESD 22

  • 2000-V Human Body Model (A114-A)

  • 1000-V Charged-Device Model (C101)

• Choice of Three Phase Comparators

  • Exclusive OR

  • Edge-Triggered J-K Flip-Flop

  • Edge-Triggered RS Flip-Flop

• Excellent VCO Frequency Linearity

• VCO-Inhibit Control for ON/OFF Keying and for Low Standby Power Consumption

• Optimized Power-Supply Voltage Range From 3 V to 5.5 V

• Wide Operating Temperature Range From –40°C to +125°C

• Latch-Up Performance Exceeds 250 mA Per JESD 17