pbl388121so ETC-unknow, pbl388121so Datasheet - Page 4

• Manufacturer Part Number: pbl388121so
• Description: Voice-switch Circuit Handsfree Speakerphone
• Manufacturer: ETC-unknow

4
PBL 388 12
Parameter
N
N
CMP (comparator) sensitivity,
transmit (Tx) mode to receive
(Rx) mode or vice versa
CTR voltage for 25 dB dynamics, V
CTR voltage for mute, I
CTR voltage for disable, V
Notes:
1.
2.
Det
Det
leakage current (hold), I
swing relative to V
20 •
V
V
V
V
Depends on V
NDet
Ref
TxDet
TxDetO
10
log (
=
= voltage at noise detector output
= reference voltage (about 1.9 V) see figure 2.
= Voltage at transmit detector output.
voltage at transmit detector output at the point
when the voltage at the noise detector starts
moving when a signal at transmit channel input is
gradually increased (threshold, typical value 30 mV)
V
V
TxDet
+
. Channels are tracking.
NDet
Ref
- V
CTR
- V
, V
TxDetO
CTR
Ref
NDet
NDet
)
CTR
Ref.
fig.
3
3
3
13
3
3
3
V
V
V
V
Tx mode = max Tx gain,
Rx mode = max Rx gain
V
V
Conditions
TxDetIn
CMP
CMP
TxDetIn
CMP
CMP
= V
= V
= V
= V
= V
= V
Ref
Ref
Ref
Ref
Ref
Ref
+ 0.1 V,
- 0.1 V,
- 0.1 V,
+ 0.1 V
0.35 V, R
0.35 V
CTR
=100k
Min.
Typ.
-100
-0.45
50
V
+
Max.
100
0.55
Unit.
nA
V
mV
V
V
A