Overview
The 74HC4046ADB,112 is a high-speed Si-gate CMOS phase-locked loop (PLL) with a voltage-controlled oscillator (VCO) produced by Nexperia (formerly part of NXP Semiconductors). This device is specified in compliance with JEDEC standard no 7A and is part of the 74HC/74HCT family. It is designed for low power consumption and offers various features that make it suitable for a wide range of applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | 2.0 | 5.0 | 6.0 | V |
| VI (Input Voltage) | 0 | - | VCC | V |
| VO (Output Voltage) | 0 | - | VCC | V |
| Center Frequency (VCO) | - | 17 MHz | - | Hz |
| Operating Temperature | -40 | - | 125 | °C |
| ESD Protection (HBM) | - | - | 2000 | V |
| ESD Protection (CDM) | - | - | 1000 | V |
Key Features
- Low power consumption
- VCO-Inhibit control for ON/OFF keying and low standby power consumption
- Center frequency up to 17 MHz (typical) at VCC = 4.5 V
- Choice of three phase comparators: EXCLUSIVE-OR, Edge-triggered J-K flip-flop, and Edge-triggered RS flip-flop
- Excellent VCO linearity
- Low frequency drift with supply voltage and temperature variations
- Operating power supply voltage range: VCO section 3.0 V to 6.0 V, Digital section 2.0 V to 6.0 V
- Zero voltage offset due to operational amplifier buffering
- ESD protection: HBM exceeds 2000 V, CDM exceeds 1000 V
Applications
- FM modulation and demodulation
- Frequency synthesis and multiplication
- Frequency discrimination
- Tone decoding
- Data synchronization and conditioning
- Voltage-to-frequency conversion
- Motor-speed control
Q & A
- What is the typical center frequency of the VCO in the 74HC4046ADB,112?
The typical center frequency of the VCO is up to 17 MHz at VCC = 4.5 V.
- What are the different types of phase comparators available in this device?
The device offers three phase comparators: EXCLUSIVE-OR, Edge-triggered J-K flip-flop, and Edge-triggered RS flip-flop.
- What is the operating power supply voltage range for the VCO section?
The operating power supply voltage range for the VCO section is 3.0 V to 6.0 V.
- What is the purpose of the VCO-Inhibit control?
The VCO-Inhibit control is used for ON/OFF keying and to reduce standby power consumption.
- What kind of ESD protection does the 74HC4046ADB,112 offer?
The device offers ESD protection exceeding 2000 V for HBM and 1000 V for CDM.
- What are some common applications of the 74HC4046ADB,112?
Common applications include FM modulation and demodulation, frequency synthesis and multiplication, frequency discrimination, tone decoding, data synchronization and conditioning, voltage-to-frequency conversion, and motor-speed control.
- What is the package type of the 74HC4046ADB,112?
The device is available in a SSOP16 (Shrink Small Outline Package) with 16 leads.
- How does the VCO section of the device achieve excellent linearity?
The VCO section achieves excellent linearity through the use of linear op amp techniques.
- What is the recommended operating temperature range for the 74HC4046ADB,112?
The recommended operating temperature range is -40°C to 125°C.
- How can the VCO output be connected to the comparator input?
The VCO output can be connected directly to the comparator input or via a frequency divider.
