P3356 ETAL, P3356 Datasheet - Page 3

• Manufacturer Part Number: P3356
• Description: TRANSFORMER, V.90, 56K
• Manufacturer: ETAL

Specifications of P3356

• Transformer Type: Matching
• Approval Bodies: EN60950
• External Depth: 18mm
• External Length / Height: 12.6mm
• External Width: 18mm
• Inductance: 6H
• Isolation Voltage: 3kV
• Mounting Type: PCB
• Turns Ratio: 1
• Dc: RoHS Compliant

ETALDOC 591/11
The following recommendations start with the simplest implementations and progress to enhanced
performance utilizing additional components.
configurations. The implementations assume a low impedance balanced TX drive and a relatively high
impedance RX input, as is commonly available, though use with other TX/RX arrangements is
straightforward.
600Ω or complex reference impedance selected, thus assisting country configuration. For complex
impedance, the matching circuits derived are suitable for reference impedances of the type 270 + 750//150nF
e.g. European CTR21 and 220 + 820//120nF (or 115nF) e.g. Australia, South Africa, etc., and yield similar
performance characteristics. For other impedances, please contact Profec Technologies.
Insertion Loss: 1.8dB @ 2kHz
Frequency Response : ±0.2dB 30Hz – 10kHz
Return Loss: 16dB 200Hz – 4kHz
Transhybrid Loss: 22dB 200Hz – 4kHz
Insertion Loss: 1.8dB @ 2kHz
Frequency Response : ±0.2dB 30Hz – 10kHz
Return Loss: 18dB 200Hz – 4kHz
Transhybrid Loss: 22dB 50Hz – 10kHz
MATCHING RECOMMENDATIONS
600Ω
600Ω
Fig. 2
Fig. 4
LINE
LINE
600
600
22 F
10nF
µ
22 F
Note that there are no changes to components on the line side, or in the hybrid, whether
µ
560
560
Minimum Cost Implementations
RXA
RXA
TXA2
TXA2
TXA1
Improved matching
TXA1
Page 3 of 6
Patented
Good performance is achieved even with the simplest
Insertion Loss: 1.0dB @ 2kHz
Frequency Response : ±0.5dB 50Hz – 4kHz
Return Loss: 18dB 200Hz – 4kHz
Transhybrid Loss: 14dB 200Hz – 4kHz
Insertion Loss: 1.0dB @ 2kHz
Frequency Response : ±0.5dB 50Hz – 4kHz
Return Loss: 20dB 200Hz – 4kHz
Transhybrid Loss: 16dB 50Hz – 4kHz
*Note: 100nF capacitor should have a temperature stable dielectric
*Note: 100nF capacitor should have a temperature stable dielectric
European CTR21/(Australia, etc.)
European CTR21/(Australia, etc.)
Fig. 5
Fig. 3
(220)
(220)
270
270
(120nF)
(120nF)
(820)
150nF
150nF
LINE
(820)
LINE
750
750
10nF
22 F
22 F
µ
µ
100
120
December 2005
P3356
100nF*
100nF*
820
750
TXA1
TXA1
RXA
TXA2
RXA
TXA2