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参数资料
| 型号： | SA2532AS |
| 厂商： | SAMES |
| 英文描述： | VERSATILE SINGLE CHIP TELEPHONE |
| 中文描述： | 多功能单芯片电话 |
| 文件页数： | 4/22页 |
| 文件大小： | 583K |
| 代理商： | SA2532AS |
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
相关PDF资料 |
PDF描述 |
|---|---|
| SA2532CP | VERSATILE SINGLE CHIP TELEPHONE |
| SA2532CS | VERSATILE SINGLE CHIP TELEPHONE |
| SA2532KA | SINGLE CHIP TELEPHONE FOR INDIA |
| SA2532KB | SINGLE CHIP TELEPHONE FOR INDIA |
| SA2532UP | VERSATILE SINGLE CHIP TELEPHONE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SA2532CP | 制造商:SAMES 制造商全称:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE |
| SA2532CS | 制造商:SAMES 制造商全称:SAMES 功能描述:VERSATILE SINGLE CHIP TELEPHONE |
| SA2532K | 制造商:SAMES 制造商全称:SAMES 功能描述:SINGLE CHIP TELEPHONE DEMO BOARD |
| SA2532KA | 制造商:SAMES 制造商全称:SAMES 功能描述:SINGLE CHIP TELEPHONE FOR INDIA |
| SA2532KB | 制造商:SAMES 制造商全称:SAMES 功能描述:SINGLE CHIP TELEPHONE FOR INDIA |
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