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TL851N

更新时间： 2024-11-09 22:19:35
品牌 Logo 应用领域
德州仪器 - TI 模拟IC信号电路光电二极管
页数 文件大小 规格书
6页 84K
描述
SONAR RANGING CONTROL

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中文翻译

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TL851N 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
Reach Compliance Code：not_compliantHTS代码：8542.39.00.01
风险等级：5.63Is Samacsys：N
模拟集成电路 - 其他类型：ANALOG CIRCUITJESD-30 代码：R-PDIP-T16
长度：19.305 mm功能数量：1
端子数量：16最高工作温度：40 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：5.08 mm
最大供电电压 (Vsup)：6.8 V最小供电电压 (Vsup)：4.5 V
标称供电电压 (Vsup)：5 V表面贴装：NO
温度等级：COMMERCIAL端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm
Base Number Matches：1

TL851N 数据手册

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TL851  
SONAR RANGING CONTROL  
SLSS004 – SEPTEMBER 1983 – REVISED MARCH 1988  
N PACKAGE  
(TOP VIEW)  
Designed for Use With the TL852 in Sonar  
Ranging Modules Like the SN28827  
Operates With Single Supply  
BLNK  
BINH  
INIT  
V
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
CC  
Accurate Clock Output for External Use  
Synchronous 4-Bit Gain Control Output  
Internal 1.2-V Level Detector for Receive  
TTL-Compatible  
XMIT  
GND  
GCD  
GCA  
GCB  
GCC  
REC  
FILT  
XTAL2  
XTAL1  
OSC  
Interfaces to Electrostatic or Piezoelectric  
Transducers  
ECHO  
description  
2
The TL851 is an economical digital I L ranging control integrated circuit designed for use with the Texas  
Instruments TL852 sonar ranging receiver integrated circuit.  
TheTL851isdesignedfordistancemeasurementfromsixinchesto35feet. Thedevicehasaninternaloscillator  
that uses a low-cost external ceramic resonator. With a simple interface and a 420-kHz ceramic resonator, the  
device will drive a 50-kHz electrostatic transducer.  
The device cycle begins when Initiate (INIT) is taken to the high logic level. There must be at least 5 ms from  
initial power-up (V ) to the first initiate signal in order for all the device internal latches to reset and for the  
CC  
ceramic-resonator-controlled oscillator to stabilize. The device will transmit a burst of 16 pulses each time INIT  
is taken high.  
The oscillator output (OSC) is enabled by INIT. The oscillator frequency is the ceramic resonator frequency  
divided by 8.5 for the first 16 cycles (during transmit) and then the oscillator frequency changes to the ceramic  
resonator frequency divided by 4.5 for the remainder of the device cycle.  
When used with an external 420-kHz ceramic resonator, the device internal blanking disables the receive input  
(REC) for 3.8 ms after initiate to exclude false receive inputs that may be caused by transducer ringing. The  
internal blanking feature also eliminates echos from objects closer than 1.3 feet from the transducer. If it is  
necessary to detect objects closer than 1.3 feet, then the internal blanking may be shortened by taking the  
blanking inhibit (BINH) high, enabling the receive input. The blanking input (BLNK) may be used to disable the  
receive input and reset ECHO to a low logic level at any time during the device cycle for selective echo exclusion  
or for a multiple-echo mode of operation.  
The device provides a synchronous 4-bit gain control output (12 steps) designed to control the gain of the TL852  
sonar ranging receiver integrated circuit. The digital gain control waveforms are shown in Figure 2 with the  
nominal transition times from INIT listed in the Gain Control Output Table.  
The threshold of the internal receive level detector is 1.2 V. The TL851 operates over a supply voltage range  
of 4.5 V to 6.8 V and is characterized for operation from 0°C to 40°C.  
Copyright 1988, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
123456

中文翻译

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