參數(shù)資料
型號(hào)： SA2531C
廠商： SAMES
英文描述： VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
中文描述： 多功能單芯片電話號(hào)碼的劇目有14個(gè)撥號(hào)
文件頁(yè)數(shù)： 5/24頁(yè)
文件大小： 392K
代理商： SA2531C
sames
SA2531 A/B/C/E/G/U
5/24
or after pressing the MUTE key, the gain is reduced by > 60 dB.
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 1000
versions).
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.
The receive gain can be adjusted under user control by using the volume control keys (not
on SA2531D). The VOL key gives a 4dB increase or returns the gain to normal in a Toggle
Function. Alternatively the + and - keys may be used. The + key increases the gain to
a maximum of +6dB while the - key reduces the gain to a minimum of -4dB. Each press
of the keys changes the gain by approximately 2dB.
The gain is reset by the next on-hook.
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
相關(guān)PDF資料
PDF描述
SA2531D VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
SA2531E VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
SA2531F VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
SA2531G VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
SA2531J VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SA2531D 制造商:SAMES 制造商全稱:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
SA2531E 制造商:SAMES 制造商全稱:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
SA2531F 制造商:SAMES 制造商全稱:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
SA2531G 制造商:SAMES 制造商全稱:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
SA2531J 制造商:SAMES 制造商全稱:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE WITH 14 NUMBER REPERTORY DIALLER
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