Datasheet > U74HC4046AG-P16-R

U74HC4046AG-P16-R

更新时间： 2024-11-22 00:52:59

品牌	Logo	应用领域
友顺 - UTC		/
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描述
PHASE LOCKED LOOP WITH VCO

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UNISONIC TECHNOLOGIES CO., LTD

U74HC4046A

CMOS IC

PHASE LOCKED LOOP WITH VCO

DESCRIPTION

The U74HC4046A is a phase-locked-loop circuit including a linear

voltage-controlled oscillator (VCO), three different phase comparators

(PC1, PC2 and PC3), a common signal input amplifier and a common

comparator input.

SOP-16

The signal can be directly coupled to large voltage signals or with a

series capacitor coupled to small voltage signals. Small voltage signals

can be kept within the linear region of the input amplifiers with a self-bias

input circuit. The U74HC4046A and a passive low-pass filter form a

second-order loop PLL. With a linear op-amp, the VCO achieves excellent

linearity.

The VCO requires an external capacitor and resistor. R1 (between R1

and GND) and capacitor C1 (between C1A and C1B) determine the

frequency range of the VCO. R2 (between R2 and GND) enables the

VCO to have a frequency offset if required.

TSSOP-16

For the high input impedance of the VCO, the design of low-pass filters is simplified, and the designer has a wide

choice of resistor/capacitor ranges. At pin 10 (DEM_OUT), a demodulator output of the VCO input voltage is provided in

order not to load the low-pass filter. In conventional techniques, the DEM_OUTvoltage is one threshold voltage lower

than the VCO input voltage, but the DEM_OUTvoltage of U74HC4046 equals the VCO input voltage. When DEM_OUTis

used, a load resistor (RS) should be connected from DEM_OUTto GND; but if unused, DEM_OUTshould be left open.

The VCO output (VCO_OUT) can be connected directly or via a frequency-divider to the comparator input (COMP_IN). If

the VCO input is held at a constant DC level, the VCO output signal has a duty factor of 50% (maximum expected

deviation 1%). A LOW level at the inhibit input (INH) enables the VCO and demodulator, while a HIGH level turns

both off to minimize standby power consumption.

FEATURES

* Low Power Consumption

* Operating Power Supply Voltage Range: Digital Section 2.0 to 6.0 V

VCO Section 3.0 to 6.0 V

* Up to 17 MHz (typ.) Centre Frequency at V_CC= 4.5 V

* Excellent VCO Frequency Linearity

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

* Minimal Frequency Drift

* Three Phase Comparators: EXCLUSIVE-OR;

Edge-Triggered JK Flip-Flop;

Edge-Triggered RS Flip-Flop

* Zero Voltage Offset due to OP-Amp Buffering

* Standard Output Capability

* MSI I_CCCategory

www.unisonic.com.tw

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QW-R502-461.C

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中文翻译

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与U74HC4046AG-P16-R相关器件

型号	品牌	获取价格	描述	数据表
U74HC4046AG-S16-R	UTC	获取价格	PHASE LOCKED LOOP WITH VCO
U74HC4046AL-P16-R	UTC	获取价格	PHASE LOCKED LOOP WITH VCO
U74HC4046AL-S16-R	UTC	获取价格	PHASE LOCKED LOOP WITH VCO
U74HC4046G-P16-R	UTC	获取价格	Phase Locked Loop, CMOS, PDSO16, HALOGEN FREE, PLASTIC, TSSOP-16
U74HC4046G-S16-R	UTC	获取价格	Phase Locked Loop, CMOS, PDSO16, HALOGEN FREE, PLASTIC, SOP-16
U74HC4049	UTC	获取价格	HEX INVERTING HIGH-TO-LOW LEVEL SHIFTER
U74HC4049_15	UTC	获取价格	HEX INVERTING HIGH-TO-LOW LEVEL SHIFTER
U74HC4049G-P16-R	UTC	获取价格	HEX INVERTING HIGH-TO-LOW LEVEL SHIFTER
U74HC4049G-P16-T	UTC	获取价格	HEX INVERTING HIGH-TO-LOW LEVEL SHIFTER
U74HC4049G-S16-R	UTC	获取价格	HEX INVERTING HIGH-TO-LOW LEVEL SHIFTER

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