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參數(shù)資料
型號: ISL5585FCRZ-TK
廠商: Intersil
文件頁數(shù): 15/24頁
文件大?。?/td> 0K
描述: IC SLIC RINGING 3.3V VOB 32-QFN
標準包裝: 1,000
功能: 用戶線路接口概念(SLIC)
電路數(shù): 1
電源電壓: 3.3V
功率(瓦特): 305mW
工作溫度: 0°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-VQFN 裸露焊盤
供應商設備封裝: 32-QFN(7x7)
包裝: 帶卷 (TR)
包括: 均衡和不均衡振鈴,振鈴聲信號發(fā)生器,熱關機,帶警報指示器
22
FIGURE 17. ISL5585 3.3V APPLICATION CIRCUIT
AUX
VRS
TIP
VFB
BGND
AGND
RING
VTX
-IN
SH
RT
CDC
ILIM
ISL5585
VCC
POL
CRS
RIL
CFB
RS
RSH
CRT
RRT
CPOL
CDC
U1
RP1
RP2
VCC
VBL
VBH
D1 1N4004
CPS1
CPS3
CPS2
TL
RTL
+
-
RF
RA
RB
CODEC
+2.4V
TX IN
RIN
V2W
+
-
PCM to V2W Gain = +3.33dB, digital gain set to 0dB
V2W to PCM Gain = -9.3 dB, digital gain set to 0dB
Digital
Gain
0dB
Digital
Gain
0dB
PCM
0 dBm0, CODEC output voltage = 0.531Vrms
0 dBm0, V2W = 0.7795Vrms
Design Equations
RS = 133.33(ZL - 2RP)
Gain PCM to V2W = RS/RIN = 66.5k/45.3k =1.46
66.5k
45.3k
V2W to PCM Gain = V2W (G2-4)(RF/RA) = (0.7795)(0.416)(30.1k/36.5k) = 0.267
30.1k
36.5k
42.2k
0.47uF
dB Gain =20log (0.7795/ 0.531) = +3.33dB
dB Gain =20log (0.267/0.7795) = - 9.3dB
600
49.9
49.9
ISL5585
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