CD74HCT4046A中文资料带 VCO 的高速 CMOS 逻辑锁相环数据手册TI规格书

描述 Description

The ’HC4046A and ’HCT4046A are high-speed silicon-gate CMOS devices that are pin compatible with the CD4046B of the \"4000B\" series. They are specified in compliance with JEDEC standard number 7.
The ’HC4046A and ’HCT4046A are phase-locked-loop circuits that contain 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 4046A forms a second-order loop PLL. The excellent VCO linearity is achieved by the use of linear op-amp techniques.

特性 Features

• Operating Frequency Range
• Minimum Center Frequency of 12MHz at VCC = 4.5V
• Edge-Triggered JK Flip-Flop
• Excellent VCO Frequency Linearity
• Minimal Frequency Drift
• Digital Section . . . . . . . . . . . . . . . . . . . . . . . . 2V to 6V
• Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Balanced Propagation Delay and Transition Times
• HC Types
• High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
• Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
• Applications
• Frequency Synthesis and Multiplication
• Tone Decoding
• Voltage-to-Frequency Conversion
• Motor-Speed Control