參數(shù)資料
型號: PCT1789N
英文描述: PCT303DL
中文描述: PCT303DL
文件頁數(shù): 3/40頁
文件大小: 632K
代理商: PCT1789N
PC-TEL, Inc.
7
1789N0DOCDAT01A-0399
PCT1789N DATA SHEET
303DL A
PPLICATION
C
IRCUITS
!
PRELIMINARY
PRELIMINARY
Analog Output
Figure 3 illustrates an optional application circuit to support the analog output capability of the 303DL chip set for
call progress monitoring purposes. The AOUT level can be set to 0, –6, –12, and mute for both transmit and receive
paths through the ATM/ARM bits in register 6.
Figure 3 Optional Connection to AOUT For a Call Progress Speaker
+
4
AOUT
Speaker
+5V
3
2
C1
C2
C3
C4
C5
R1
R2
6
5
R3
+
C6
U1
Table 2 Optional Connection Component Values
Symbol
C1
C2, C3, C5
C4
C6
R1
R2
R3
U1
Value
2200 pF, 16 V, ±20%
0.1 μF, 16 V, ±20%
100 μF, 16 V, Elec. ±20%
820 pF, 16 V, ±20%
10 k
, 1/10 W, ±5%
10
, 1/10 W, ±5%
47 k
, 1/10 W, ±5%
LM386
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