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Details, datasheet, quote on part number:PBL385821SOT
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Datasheet text preview:
Pmb r 1999 DeceBLe385 82
PBL 38582 Telephone Line interface circuit for DECT, DAM, CT Unisolated or Isolated
Description
PBL 38582 is a monolithic bipolar integrated circuit for use as telephone line interface in unisolated or isolated DECT and other cordless telephone residential base stations and in analog / digital answering machines or as second line in an unisolated DECT telephone base station. Transmit and receive gains are set by external components. On / Off switchable gain, related to line, regulation for different current feeds can be set by external resistors. Typical current feeds as 48 V, 2 · 200 ohm, 48 V 2 · 400 ohm and 60 V 2 · 600 ohm can be handled. Application dependent parameters such as line balance, impedance to the line and frequency response are set by external components. Parameters are set independently which results in an easy adoption for various market needs.
Key Features
· Minimum number of inexpensive external components, 5 capacitors and 4 resistors. · Current range 5 - 130 mA(DIL), 5 - 100 mA(20-pin SO) 5 - 70 mA(16-pin SO) 385 82/2 · Operation voltage range down to 2 V. · Short start-up time.
P
B
L
3
8
5
8
1
PBL 38582
Fast start - up
P
B
L
18
38
20-pin plastic SO
DC supply
+ 6 3 2
15 5 , 14,16
RECEIVE
Reference
17
Limiter
5
4
1 2
TRANSMIT
P
B
18-pin plastic DIP
Figure 1. Functional diagram. DIP package.
L
38
Telephone line
58
2
82
2
16-pin plastic SO
1
PBL 385 82
Maximum Ratings
Parameter Symbol Min Max Unit
Line voltage, tp = 2 s Line current, continuous DIP Line current, continuous SO-20 package Line current, continuous SO-16 package Operating temperature range Storage temperature range No input should be set on higher level than pin 15.(+C)
VL IL IL IL PBL 38582/2 T Amb TStg
0 0 0 0 -40 -55
18 130 100 70 +70 +125
V mA mA mA °C °C
R = 0-4k L 0 ohm when artificial line is used 5H+5H
310
+
R feed = 400+400 C
ARTIFICIAL LINE
IL
+ LINE
350
V4 output
Receiver
+
E = 48.5V
V2
600
V
L
PBL 38582 with external components See fig. 4
V1
V3
Transmitter input
C = 1µF when artificial line is used 470µF when no artificial line
- LINE
Figure 2. Test set up without rectifier bridge.
5H+5H R
RL = 0 - 4 k
Uz= 15-16V
IL
310
+ LINE
350
feed = 400+400
1µF V2
+
PBL 38582 with external components See fig. 4
V4 output
Receiver
+
E = 50.0V
600
V
L
V1
- LINE
V3
Transmitter input
Figure 3. Test set up with rectifier bridge.
1
+Line
PBL 38582
Fast start - up
18
Receiver output
17
Limiter
Reference
DC supply
+
6
3 C3
2
15
5, 14,16 C4
4
Figure 4. Circuit with external components for test set up. R1 = 6.2 k R2 = 62 k R6 = 75 R3 = 909 R14 = 10k C1 = 68 µF C2 = 15 nF C3 = 0.1µF C4 = 47 nF DIP package pinning.
Transmitter input
R13 R14 R6
R1
R2 R3 C2 C1
-Line
2
PBL 385 82
Electrical Characteristics
At TAmb = + 25° C. No cable and no line rectifier unless otherwise specified. IL = 100 mA is not valid for 16-pin SO package.
Parameter Ref.fig. Conditions Min Typ Max Unit
Line voltage, VL Transmitting gain Transmitting frequency response Transmitter dynamic output
2 2
IL = 15 mA IL = 100 mA 20 ·10 log (V2 / V3); 1 kHz 200 Hz to 3.4 kHz
3.3 11 24 -1
3.7 13 25
4.1 15 26 1
V V dB dB
2
2
200 Hz - 3.4 kHz 2% distortion, IL = 20 - 100 mA
1.5
Vp Vp dB Psof 20.5 kohm
Transmitter maximum output
2
200 Hz - 3.4 kHz IL = 0 - 100 mA, V3 = 0 - 1 V
3
Transmitter output noise Transmitter input impedance pin 3 Receiving gain Without gain regulation Receiving gain With gain regulation
2 2
Psof-weighting, Rel 1 Vrms, RL = 0 1 kHz 13.5
-75 17
20 · 10 log (V4 / V1); 1 kHz 2 2 2 2 RL = 0 - xxx ohm, R11= 10k 20 · 10 log (V4 / V1); 1 kHz, R11 not used RL = 0 ohm, RL = 400 ohm RL = 900 ohm - 2.2 kohm 1 kHz, RL = 0 to 900 ohm 200 Hz to 3.4 kHz 1 kHz, without 310 resistor 200 Hz - 3.4 kH 2% distortion, IL = 20 - 100 mA 3 Measured with line rectifier 200 Hz - 3.4 kHz, IL = 0 - 100 mA, V1= 0 - 50 V 0.9 Vp -18.5 -16 -13.5 3 -1 3 0.5 -16.5 -14 -11.5 5 -14.5 -12 -9.5 7 1 dB dB dB dB dB ohm Vp -18.5 -16.5 -14.5 dB
Receiving range of regulation Receiving frequency response Receiver output impedance Receiver dynamic output note 1 Receiver maximum output
2 2 2 2
Receiver output noise
2
A-weighting, Rel 1Vrms, with cable 0 - 5 km, Ø = 0.5 mm, 0 - 3 km, Ø = 0.3 mm
-85
dB A
Notes: 1. The dynamic output can be nearly doubled if the 310 series resistor is omitted.
3
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