ISL5585 Datasheet, PDF (13/22 Pages) Intersil Corporation – 3.3V Ringing SLIC Family for Voice Over Broadband VOB

ISL5585
2-WIRE SIDE
TIP ^{- IM +}
+
V_2W
-
R_P
Z_L
+ ^IM _-
RING ^RP
I_X
-
+
INTERSIL
ISL5585
R
V₂ ^RSENSE V₁
-
+
20Ω
- ^{IM +}
FEED
AMPLIFIER
I_X RECEIVE BLOCK _IX
R
1:1
R
FEED
R_{SENSE AMPLIFIER}
V₃
V₄
+
20Ω
+ ^IM _-
-
I_X
+
-
TA
R
4R
3R
4R
-
8k
4R
+
4R
3R
V_SA = ∆I_M30
SENSE
AMPLIFIER
4-WIRE SIDE
AUX
V_TX
+
V_TX
-
R_S
-IN
C_FB
VFB
INPUT
R_IN
V_IN
FROM CODEC
FIGURE 6. 4-WIRE TO 2-WIRE SIGNAL PHASE ACROSS THE ISL5585
2-WIRE SIDE
INPUT
+
V_2W
-
TIP ^{+ IM -}
R_P
- ^IM +
RING ^RP
I_X
-
+
INTERSIL
ISL5585
R
V₂ ^RSENSE V₁
-
+
20Ω
+ ^IM _-
FEED
AMPLIFIER
I_X RECEIVE BLOCK _IX
R
1:1
R
FEED
R_{SENSE AMPLIFIER}
V₃
V₄
+
20Ω
-
- ^IM ⁺
I_X
+
-
TA
R
4R
3R
4R
-
8k
4R
+
4R
3R
V_SA = ∆I_M30
SENSE
AMPLIFIER
4-WIRE SIDE
AUX
V_TX
+
V_TX
-
R_S
-IN
C_FB
VFB
R_IN
V_IN
FROM CODEC
FIGURE 7. 2-WIRE TO 4-WIRE SIGNAL PHASE ACROSS THE ISL5585
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