PBL 3881
Ref.
fig.
Parameter
Conditions
Min.
Typ.
Max.
Unit.
NDet leakage current (hold), INDet
3
4
VCMP = VRef - 0.1 V,
-100
nA
V
NDet = VRef,VTxin=0
VCMP = VRef + 0.1 V,
Txin = VRef + 0.1 V
NDet swing relative to VRef , VNDet
-0.45
50
V
V
CMP (comparator) sensitivity,
transmit (Tx) mode to receive
(Rx) mode or vice versa
3
15
Tx mode = max Tx gain,
Rx mode = max Rx gain
100
mV
CTR voltage for full duplex, VCTR
CTR sink current for mute, ICTR
CTR voltage for shut down, VCTR
Loudspeaker amplifier
3
3
3
VCMP = VRef ± 0.35 V
VCMP = VRef ± 0.35 V, RCTR=1k Ω
V+
V
µA
V
50
60
0.55
Operating voltage, VA
Current consumption (no signal), I+L
5
5
5
5
2.5
12
2.3
V
VA = 3.0 V
VA = 5.0 V
VA = 12.0 V
RE = 1.5 K, VLine = 3.0 V Note 3
1
1.5
4
mA
mA
mA
mA
9
2.4
21
1.3
V
RDC = 0.35 V
RE = 1.5 K, VLine = 12.0 V Note 3
RDC = 5.0 V
21
7.5
14
mA
V
Current consumption
(output swing at 5% dist.)
5
5
5
5
5
5
5
VA = 3.0 V
VA = 5.0 V
VA = 12.0 V
VA = 3.0 V
VA = 5.0 V
VA =12.0 V
VA =5.0 V
7
13
30
0.85
1.7
4.0
36.5
mA
mA
mA
Vp
Vp
Vp
Swing at 5% dist., VOut
0.6
1.5
3.6
Gain
34.5
38.5
1
dB
Frequency response
Amplifier power efficiency (5% dist), n
Input impedance pin 22
5
5
5
200 to 3400 Hz, relative 1kHz,
VA = 5.0 V
VA = 3.0 to 12.0 V,
-1
dB
%
40
30
n = n (%)=/00 • PLoad/PSupply
24
36
kΩ
Notes
VNDet - VRef
VTxDetO = voltage at transmit detector output at the
point when the voltage at the noise
1. 20 • 10log (
)
VTxDet - VTxDetO
VNDet = voltage at noise detector output
detector starts moving when a signal at
transmit channel input is gradually
increased (threshold, typical value 30 mV)
VRef = reference voltage (about 1.9 V) see figure 2.
VTxDet = Voltage at transmit detector output.
2. Depends on V+. Channels are tracking.
3. VLine =VA +VDRC
0.015µ used only
with inductive load
V
out
(Vp)
5%
LS 17
f = 1 kHz
3.5
2%
Input
50Ω
V
+
Load
out
22 B
3.0
2.5
2.0
in
V
in
1 µF
F
100µ
16 V
+
+
I
PBL 3881
+L
+L 19
–C 21
1000µ
F
1.5
Amplifier
supply
16 V
V
A
1.0
R
20
R
18
GND
16
E
DC
0.5
V
0
Line
2
4
6
8
10 12 14 16 18
(V)
Figure 5. Test circuit. Reference figure No. 5.
4
Figure 6. Power amplifier output distorsion. Line voltage
versus output swing.
ERICSSON [ ERICSSON ]
