參數(shù)資料
型號: SI3012-KT
廠商: Electronic Theatre Controls, Inc.
英文描述: 3.3 V FCC/JATE DIRECT ACCESS ARRANGEMENT
中文描述: 3.3伏催化裂化/ JATE直接訪問安排
文件頁數(shù): 19/64頁
文件大小: 1740K
代理商: SI3012-KT
Si3038
Rev. 2.01
19
Analog Output
Figure 20 illustrates an optional application circuit to support the analog output capability of the Si3038 for call
progress monitoring purposes. The AOUT level can be set to 0 dB, –6 dB, –12 dB, and mute for both transmit and
receive paths through the ATM/ARM bits in register 5Ch. U1 provides a gain of 26 dB. Additional gain adjustments
may be made by varying the voltage divider created by R1 and R3.
Figure 20. Optional Connection to AOUT for a Call Progress Speaker
Table 18. Component Values—Optional Connection to AOUT
Symbol
Value
C1
2200 pF, 16 V, ±20%
C2, C3, C5
0.1 μF, 16 V, ±20%
C4
100 μF, 16 V, Elec. ±20%
C6
820 pF, 16 V, ±20%
R1
10 k
, 1/10 W, ±5%
R2
10
, 1/10 W, ±5%
R3
47 k
, 1/10 W, ±5%
U1
LM386
AOUT
C5
R2
C4
+
Speaker
+5 V
3
2
6
4
+
5
C2
R3
C3
R1
C6
C1
U1
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