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參數資料
| 型號： | U4078B |
| 英文描述： | Tone Ringer Interface with DC/DC Converter |
| 中文描述： | 音鈴聲接口與直流/直流轉換器 |
| 文件頁數： | 4/5頁 |
| 文件大?。?/td> | 57K |
| 代理商： | U4078B |
TELEFUNKEN Semiconductors
U4078B
4
Time Sequence
Internal clock frequency without RC tolerance
t
clock
During this time, a clock signal is given at
Pin 5 (ST).Pin 4 is open or ST is high ohmic.
(MS=GND)
t
pulse
By every polarity change of the call signal and MS
open, the clock signal is interrupted for a time
duration
t
pulse
= 32/f
clock
. During interruption, the signal at
ST (Pin5) is of such a value that the coil is critically
attenuated (damped).
I
S
(PNP) = I
ST
10
μ
A
A current of I
ST
150
μ
A is drawn from Pin 5 (ST) by
every polarity change whereby MS is grounded.
éé
éé
é
é
éééé
éééé
é
é
é
é
ééé
ééé
Call signal
ST
MS = open
ST
MS = 0
t
cycle
t
puls
e
t
92 7461 e
92 7471 e
t
1
2. Phase
1. Phase
ST
f
cycle
Current sequence at Pin 5 with an external PNP transistor connected as shown in figure 1. (f
clock
= 38 kHz)
Ordering Information
Package
SO8
Type
U4078B-FP
Dimensions in mm
Package: SO8
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相關代理商/技術參數 |
參數描述 |
|---|---|
| U4080B | 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:Voice-Switched Circuit for Handsfree Operation |
| U4082B | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low-voltage Voice-switched IC for Hands-free Operation |
| U4082B-DEV-BOARD | 功能描述:射頻開發工具 Voice Switched Circuit RoHS:否 制造商:Taiyo Yuden 產品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
| U4082B-MFLG | 功能描述:射頻無線雜項 COM.CORDED - VOICE SWITCHED CIRCUIT RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| U4082B-MFLG3G | 功能描述:射頻無線雜項 COM.CORDED - VOICE SWITCHED CIRCUIT RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
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