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參數(shù)資料
| 型號(hào)： | U4090B-N |
| 英文描述： | Low power dual voltage comparators |
| 中文描述： | U4090B氮[更新9 / 03。 34頁] |
| 文件頁數(shù)： | 5/34頁 |
| 文件大小： | 622K |
| 代理商： | U4090B-N |
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5
U4090B-N
4740A–CORD–09/03
28
INLDR
Input of receive level detector
29
TLDT
Time constant of transmit level detector
30
TLDR
Time constant of receive level detector
31
AGA
Automatic gain adjustment with line current, a resistor connected from this pin to GND sets the starting
point, maximum gain change: 6 dB.
32
IREF
Internal reference current generation; RREF = 62 k ; IREF = 20 μA
33
STO
Sidetone reduction output
Output resistance approx.: 300
Maximum load impedance: 10 k .
,
34
VM
Reference node for microphone-earphone and loudspeaker amplifier, supply for electret microphone
(IM 700 mA)
35
MUTR
Three-state mute input
1.
Normal operation
2.
Mute for ear piece
3.
Mute for RECIN signal Condition of earpiece mute is stored
36
RECO 2
Inverting output of receiving amplifier
37
STI S
Input for sidetone network (short loop) or for answering machine
38
STI L
Input for sidetone network (long loop)
39
RAC
Input of receiving amplifier for AC coupling in feedback path
40
RECO 1
Output of receiving amplifier
41
GR
A resistor connected from this pin to GND sets the receiving amplification of the circuit; amplifier RA1
can be muted by applying VMP to GR
42
TTXA
Time constant of anti-clipping in transmit path
43
RECIN
Input of receiving path; input impedance is typically 80 k
44
TXIN
Input of intermediate transmit stage, input resistance is typically 20 k
Pin Description (Continued)
Pin
Symbol
Function
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| U4090B-NFN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telephone Circuit (Support) |
| U4090B-NFNG3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
| U4090B-P | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Monolithic Integrated Feature Phone Circuit EMI Improved |
| U4090B-PFNG3Y | 功能描述:電信語音調(diào)制 IC COM.CORDED - FEATURE RoHS:否 制造商:Epson Electronics America 產(chǎn)品: 應(yīng)用:Voice Guidance product 封裝 / 箱體:PQFP-52 電源電壓-最大:3.6 V, 5.5 V 最大工作溫度: 最小工作溫度: 封裝: |
| U4090B-PFNY | 功能描述:電信語音調(diào)制 IC COM.CORDED - FEATURE RoHS:否 制造商:Epson Electronics America 產(chǎn)品: 應(yīng)用:Voice Guidance product 封裝 / 箱體:PQFP-52 電源電壓-最大:3.6 V, 5.5 V 最大工作溫度: 最小工作溫度: 封裝: |
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