PBL 3786
Ref.
fig.
Parameter
Conditions
Min.
Typ.
Max.
Unit
Tone ringer (Load = 50 ohm resistive, V
RVIn
= 30 V unless otherwise noted)
Supply current pin 17, I
Rvin
7
7
7
7
7
7
7
7
7
8
V
RviIn
= 5 V
V
Rvin
= 10 V
Inductive load (50 ohm loudspeaker)
22
16
3
1.12
Set by resistor on pin 12
1
100
2.1
1.2
25
19
5.5
12
1.25
0 to 3.5
10
200
3.3
µA
µA
mA
mA
V
V
V
µs
mA
Threshold voltage on pin 17, V
Rvin
Trigger on
Trigger off
Hysteresis trigger on/trigger off
Pulsewidth pin 18, t
pw
Frequency modulation (see fig.24 ), ƒ2/ƒ1
Output current on pin 14 , I
µP
Logic levels when interfaced with a
microprocessor (at pin 13)
High logic input level, V
in
Low logic input level, V
in
Current at high level, I
in
Current at low level, I
in
28
22
8
25
1.38
8
8
8
8
Resistor on pin 13 = 100kΩ
Resistor on pin 13 = 100kΩ
Resistor on pin 12 = 5kΩ
Resistor on pin 12 = 5kΩ
4.2
0.0
3.0
-8.5
5.5
-5.5
6.0
0.45
8.5
-3.0
V
V
µA
µA
Notes
V
Txdet
-V
Txdett
I
RVin
LS1 15
0.015µ
1.
20 • log (
V
Ndet
V
Ref
10
V
Ndet
-V
Ref
RVin
Load
17 RV
in
LS2 18
)
= voltage at noise detector
output
= reference voltage (about
1.9V)
16 GND
PBL 3786
+L 20
LF
µ
PA
12
HF
µ
PS
13
PWM
µ
PC
14
–C 22
100
µF
+ 16 V
+
1000
µ
F
16 V
V
TxDet
= voltage at transmit
detector output
V
TxDet
= voltage at transmit
detector output at the
point where the voltage at
the noise detector output
starts moving when a
signal at transmit channel
input is gradually
increased (threshold,
typical value 50 mV)
2.
3.
Depends on V
+
. Channels are
tracking.
V
Line
=V
A
+ V
RDC
Figure 7. Toneringer fixed frequency control mode.
R
Vin
0.015µ
Load
17 R
Vin
LS2 18
LS1 15
16 GND
+
PBL 3786
HF
µ
PS
13
100 k
I
in
V
in
TTL
signal input
100
µF
16 V
+L 20
–C 22
+ 1000
µF
16 V
LF
µ
PA
12
PWM
µ
PC
14
I
µ
P
3 - 6.5 V
Regulated voltage output
for feeding
external
+
10
µF
circuitry.
16 V
Figure 8. Toneringer
µ
P-control mode.
5
ERICSSON [ ERICSSON ]
