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參數(shù)資料
| 型號： | SA2532UP |
| 廠商： | SAMES |
| 英文描述： | VERSATILE SINGLE CHIP TELEPHONE |
| 中文描述： | 多功能單芯片電話 |
| 文件頁數(shù)： | 4/22頁 |
| 文件大小： | 583K |
| 代理商： | SA2532UP |
4/22
SA2532
sames
Receive
The receive input is the differential signal of RI and STB. The gain of the receive path is
2 dB (test circuit figure 5) with differential outputs, RO1/RO2 (0dB on SA2532C/U). When
mute is active during dialling the gain is reduced by > 60dB. During DTMF dialling a MF
comfort tone is applied to the receiver. The comfort tone is the DTMF signal with a level
that is -30dB relative to the line signal.
Side Tone
Side Tone is controlled along with Return Loss by a Double Balance Bridge as shown in
Fig. 1.
Figure 1
Double balance bridge (return loss and side tone) with one common ground
A good side tone cancellation is achieved by using the following equation:
ZBAL =
R5
ZLINE
R1
The side tone cancellation signal is applied to the STB input.
Line Loss Compensation
When Line Loss Compensation is active the gain of the Transmit and Receive amplifiers
are changed by 6dB in accord with the DC conditions as measured at Pins LI and LS.
When the LLC Pin is Low this adjustment in gain occurs over the range I
= 20 to 50 mA.
When LLC is High the range is 45 to 75mA. Note that these figures apply for R1 = R30
.
When the LLC Pin is open the amplifier gains remain fixed regardless of the Line Current.
ONE COMMON GROUND
DR-00708
Z
BAL
RETURN LOSS
LINE
V
Z
REF
SS
R2
R1
RI
SIDE TONE
R5
STB
SYN
LI
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA2532US | VERSATILE SINGLE CHIP TELEPHONE |
| SA5224 | FDDI fiber optic postamplifier |
| SA5224D | FDDI fiber optic postamplifier |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA2532US | 制造商:SAMES 制造商全稱:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE |
| SA2-5500-CBB-STD | 功能描述:氣體放電管 - GDT /氣體等離子體避雷器 5500volts 1pF BENT LEADS RoHS:否 制造商:Bourns 峰值脈沖電流: 直流擊穿電壓（標稱）:4500 V 電極數(shù)量:2 系列:SA2 端接類型:Axial 故障安全保護 Y/N: 封裝:Reel |
| SA2-5500-CBT-STD | 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:SA2 Series High Voltage Gas Discharge Tube |
| SA2-5500-CCB-STD | 功能描述:氣體放電管 - GDT /氣體等離子體避雷器 5500volts 1pF NO LEADS RoHS:否 制造商:Bourns 峰值脈沖電流: 直流擊穿電壓（標稱）:4500 V 電極數(shù)量:2 系列:SA2 端接類型:Axial 故障安全保護 Y/N: 封裝:Reel |
| SA2-5500-CCT-STD | 制造商:BOURNS 制造商全稱:Bourns Electronic Solutions 功能描述:SA2 Series High Voltage Gas Discharge Tube |
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