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L2572L-S16-R

更新时间： 2024-02-25 00:04:50

品牌	Logo	应用领域
友顺 - UTC		消费电路商用集成电路接收器集成电路光电二极管
页数	文件大小	规格书
14页	251K
描述
WIDEBAND PLL FM DEMODULATOR

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技术参数
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L2572L-S16-R 技术参数

是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	SOIC	包装说明：	LEAD FREE, SOP-16
针数：	16	Reach Compliance Code：	compliant
风险等级：	5.83	商用集成电路类型：	AUDIO DEMODULATOR
解调类型：	FM	JESD-30 代码：	R-PDSO-G16
长度：	10 mm	功能数量：	1
端子数量：	16	最高工作温度：	80 °C
最低工作温度：	-20 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
座面最大高度：	1.96 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	4.5 V	表面贴装：	YES
温度等级：	COMMERCIAL EXTENDED	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	3.95 mm

L2572L-S16-R 数据手册

L2572

LINEAR INTEGRATED CIRCUIT

FUNCTIONAL DESCRIPTION

The UTC L2572 as optimized for application in satellite receiver systems and requiring a minimum external

component count is a wideband PLL FM demodulator. It includes all the elements required to construct a phase

locked loop circuit, with the exception of an AFC detector circuit for generation of error signal to correct for any

frequency drift in the outdoor unit local oscillator, and tuning components for the local oscillator contains a block

diagram and Fig. 1 contains the typical application.

Fig. 2-1 contains the internal pin connections

In applications the second satellite IF frequency of typically 479.5 or 402MHz is fed to the RF preamplifier normally,

which depending on application and layout has a working sensitivity of typically -40 dBm. An RF level detect circuit,

which generates an AGC signal that can be used for controlling the gain of the IF amplifier stages is contained in the

preamplifier, so it can be maintaining a fixed level to the RF input of the UTC L2572, for optimum threshold

performance. The AGC circuit’s bias point can be adjusted to cater for device input power and variation in AGC line

voltage requirement. Fig. 5 shows the typical AGC curves are shown in. That the device is recommended that be

operated with an input signal between -30 and -35dBm. That can ensure optimum linearity and threshold

performance, and when over the typical sensitivity of -40dBm can give a good safety margin.

The preamplifier’s output is fed to the mixer section which is of balanced design for low radiation. In this stage the

RF signal is mixed with which is generated by an on–board oscillator, the local oscillator frequency. The oscillator

block is optimized for high linearity over the normal deviation range and uses an external varactor tuned sustaining

network. Fig. 3 contains a typical frequency versus voltage characteristic for the oscillator. Fig.4 shows the typical

stability that he loop output is designed to compensate for first order temperature variation effects.

The mixer’s output is then fed to the loop amplifier around which feedback is applied to effect loop transfer

characteristic. Feedback could be applied either in single ended or differential mode; both modes should give the

same loop response if the appropriate phase detector gains are assumed in calculating loop filters.

The loop amplifier drives a 75Ω output impedance buffer amplifier, which could be connected to a 75Ω load and

used to drive a high input impedance stage giving greater linearity and approximately 6dB higher demodulated signal

output level too.

UNISONIC TECHNOLOGIES CO., LTD

8 of 14

QW-R102-032.A

www.unisonic.com.tw

1...5 6 789 10 11...14

中文翻译

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与L2572L-S16-R相关器件

型号	品牌	描述	获取价格	数据表
L2572L-S16-T	UTC	WIDEBAND PLL FM DEMODULATOR	获取价格
L2572-S16-R	UTC	WIDEBAND PLL FM DEMODULATOR	获取价格
L2572-S16-T	UTC	WIDEBAND PLL FM DEMODULATOR	获取价格
L258	IXYS	Converter - Brake - Inverter Module (CBI1)	获取价格
L25A	GOOD-ARK	Surface Mount Glass Passivated Standard Rectifier	获取价格
L25J100	OHMITE	RES CHAS MNT 100 OHM 5% 25W	获取价格
L25J100E	OHMITE	RES CHAS MNT 100 OHM 5% 25W	获取价格
L25J100K	OHMITE	RES CHAS MNT 100K OHM 5% 25W	获取价格
L25J100KE	OHMITE	RES CHAS MNT 100K OHM 5% 25W	获取价格
L25J10K	OHMITE	RES CHAS MNT 10K OHM 5% 25W	获取价格
L25J10KE	OHMITE	RES CHAS MNT 10K OHM 5% 25W	获取价格
L25J10R	OHMITE	Fixed Resistor, Wire Wound, 25W, 10ohm, 625V, 5% +/-Tol, 400ppm/Cel, Chassis Mount	获取价格
L25J10RE	OHMITE	RES CHAS MNT 10 OHM 5% 25W	获取价格
L25J12K	OHMITE	RES CHAS MNT 12K OHM 5% 25W	获取价格
L25J12KE	OHMITE	RES CHAS MNT 12K OHM 5% 25W	获取价格
L25J150	OHMITE	RES CHAS MNT 150 OHM 5% 25W	获取价格
L25J150E	OHMITE	Fixed Resistor, Wire Wound, 25W, 150ohm, 625V, 5% +/-Tol, 260ppm/Cel, Chassis Mount, ROHS	获取价格
L25J15K	OHMITE	RES CHAS MNT 15K OHM 5% 25W	获取价格
L25J15KE	OHMITE	RES CHAS MNT 15K OHM 5% 25W	获取价格
L25J15R	OHMITE	RES CHAS MNT 15 OHM 5% 25W	获取价格

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