ISL5585FCRZ Intersil, ISL5585FCRZ Datasheet - Page 22

• Manufacturer Part Number: ISL5585FCRZ
• Description: SLIC 1-CH 53dB 45mA 3.3V/-18V/-24V/-28V 32-Pin QFN EP
• Manufacturer: Intersil

Specifications of ISL5585FCRZ

• Package: 32QFN EP
• Number Of Channels Per Chip: 1
• Polarity Reversal: Yes
• Longitudinal Balanced: 53(Min) dB
• Loop Current: 45 mA
• Minimum Operating Supply Voltage: 2.97|-16 V
• Typical Operating Supply Voltage: 3.3|-18|-24|-28 V
• Typical Supply Current: 9.3 mA

V
+
-
2W
600Ω
C
RS
C
C
R
R
49.9Ω
PS3
R
49.9Ω
R
C
R
RT
RT
SH
IL
P2
DC
C
P1
PS2
C
PS1
TIP
RING
RT
SH
ILIM
VRS
AGND
VCC VBL VBH
ISL5585
22
U
1
BGND
CDC
POL
AUX
VFB
VTX
TL
-IN
D
1
FIGURE 17. ISL5585 3.3V APPLICATION CIRCUIT
1N4004
R
C
R
S
POL
TL
0.47uF
C
66.5kΩ
FB
V
CC
PCM to V
V
0 dBm0, CODEC output voltage = 0.531Vrms
0 dBm0, V
Design Equations
R
Gain PCM to V
V
2W
2W
S
ISL5585
= 133.33(Z
to PCM Gain = -9.3 dB, digital gain set to 0dB
to PCM Gain = V
dB Gain =20log (0.7795/ 0.531) = +3.33dB
dB Gain =20log (0.267/0.7795) = - 9.3dB
2W
2W
Gain = +3.33dB, digital gain set to 0dB
= 0.7795Vrms
L
2W
- 2R
= R
36.5kΩ
45.3kΩ
P
R
R
)
2W
S
A
IN
/R
(G
IN
2-4
= 66.5k/45.3k =1.46
0.47uF
)(R
F
/R
0.47uF
A
) = (0.7795)(0.416)(30.1k/36.5k) = 0.267
30.1kΩ
42.2kΩ
R
B
R
F
+2.4V
-
+
TX IN
CODEC
Digital
Gain
0dB
Digital
Gain
0dB
PCM
PCM