SL34118D System Logic Semiconductor, SL34118D Datasheet - Page 8

• Manufacturer Part Number: SL34118D
• Description: Voice Switched Speakerphone Circuit
• Manufacturer: System Logic Semiconductor

SL34118
MAXIMUM RATINGS
*
Functional operation should be restricted to the Recommended Operating Conditions.
Maximum Ratings are those values beyond which damage to the device may occur.
Pin No
Symbol
Tstg
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
V
V
V
V
CC
IN
IN
IN
Designation
Supply Voltage (Pin 14)
Input Voltage at CD(Pin 3), MUT (Pin 12)
Input Voltage at VLC (Pin 13)
Input Voltage at TXI(Pin 9), RXI (Pin 21), FI (Pin 2)
Storage Temperature Range
MUT
TLO2
RLO2
TLO1
RLO1
TLI2
RLI2
RXO
TLI1
RLI1
GND
VLC
CPT
CPR
RXI
C
V
T
B
Mute input. A logic low (<0.8 V) sets normal operation. A logic high (>2.0 V) mutes
the microphone amplifier without affecting the rest of the circuit. Input impedance is
nominally 90 .
Volume control input. When VLC = V
when in the receive mode. When VLC = 0.3 V
Does not affect the transmit mode.
An RC this pin sets the response time for the circuit to switch modes.
An output voltage
volume control. A filter cap is required.
An RC at this pin sets the time constant for the transmit background monitor.
Input to the transmit level detector on the mike speaker side.
Output of the transmit level detector on the mike/speaker side, and input to the
transmit background monitor.
Output of the receive level detector on the mike/speaker side.
Input to the receive level detector on the mike/speaker side.
Input to the receive attenuator and dial tone detector. Max input level is 350 mV
RMS. Input impedance is 10 K .
Output of the receive attenuator. DC level is approximately V
Input to the transmit level detector on the line side.
Output of the transmit level detector on the line side.
Output of the receive level detector on the line side, and input to the receive
background monitor.
Input the receive level detector on the line side.
An RC at this pin sets the time constant for the receive background monitor.
Ground pin for the entire IC.
*
Parameter
V
CC
/2. This voltage is a system ac ground, and biases the
Description
B
, the receive attenuator is at maximum gain
B
, the receive gain is down 35 dB.
-1.0 toV
-1.0 toV
-0.5 toV
-1.0 to +7.0
-65 to +150
Value
SLS
B
CC
CC
CC
.
+1.0 V
+0.5 V
+0.5 V
System Logic
Semiconductor
Unit
V
V
V
V
C