Datasheet MF612A Datasheet (YCL)

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 1 OF 13

File No RDPS-MF039
Revision R0
System Application Asymmetric Digital Subscriber Line
Product Type Microfilter
Product Name MF612A
Date Mar. 7th, 2002

Grant Teng- Design Engineer, R&D_1Issued By

[e-mail]

Roger Wu – Manager, R&D_1Approved By

[e-mail]

Issued Date

YCL Electronics Co., Ltd.

No.95, Feng Jen Road. Feng Shan City, Kaohsiung, Taiwan, R.O.C.

This controlled document is the property of YCL Electronics Co., Ltd. Any duplication
reproduction or transmission by unauthorized parties without the prior written
permission of YCL Electronics Co., Ltd. is prohibited.

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 2 OF 13

Table of contents

Item Description Page

1. Introduction ----------------------------------------------- 3

2. Reference ----------------------------------------------- 3

3. Abbreviations ----------------------------------------------- 4

4.

Technical requirements

----------------------------------------------- 4

4.1. Schematic ----------------------------------------------- 4

4.2. ZHP-r definition ----------------------------------------------- 4

4.3. Electrical specification ----------------------------------------------- 5

4.4. DC characteristics ----------------------------------------------- 7

4.5. Test methods ----------------------------------------------- 8

4.5.1. Insertion loss at 1004 Hz ----------------------------------------------- 8

4.5.2. Attenuation distortion in the voice band ----------------------------------------------- 9

4.5.3. Return loss ----------------------------------------------- 10

5. Environmental conditions ----------------------------------------------- 11

5.1. Resistibility to overvoltages and
overcurrents

----------------------------------------------- 11

5.2 : Climatic conditions ----------------------------------------------- 11

5.2.1. Operating temperature ----------------------------------------------- 11

5.2.2. Storage and transport ----------------------------------------------- 11

5.2.3. Operation humidity ----------------------------------------------- 11

6. Reliability conditions ----------------------------------------------- 12

7. Mechanical conditions ----------------------------------------------- 13

7.1. Mechanical ----------------------------------------------- 13

7.2. Connector information ----------------------------------------------- 13

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 3 OF 13

1. Introduction:

The In-Line Microfilter has been specifically designed to implement the functionality of low
pass filter in G.lite system. G.lite technology is similar to full rate ADSL in using DMT
technology but operates at a lower data rate of up to 1.5 Mbps downstream and 512 kbps
upstream, depending on line conditions and lengths.

For POTS voice band service, the low pass filter provide protection from ADSL signal which
may impact through non-line or other effects remote devices ( handset, fax, voice band
modem etc. ) and central office operation. For ADSL signal, it also provide protection from the
high frequency transients and impedance effect that occur during POTS operation ( ringing
transients, on-hook, off-hook transients and so on ). Because the Microfilter connects directly
to the subscriber loop media, it must also provide some protection for externally induced line
hits or faults which could damage any attached equipment or endanger humans interacting
with the installed equipment. The circuit protection will be provided mostly by standard central
office line protection means and additional protection measures built into POTS filter to
protect against line overstress which could damage the filter itself.

2. Reference:

Ref. 1 : ETS 300 001 Attachments to the Public Switched Telephone Network
(PSTN); General technical requirements for equipment
connected to analogue subscriber interface in the PSTN.
Ref. 2 : ANSI T1.413 Network and Customer Installation Interfaces－
Asymmetric Digital Subscriber Line (ADSL) Metallic
Interface
Ref. 3 : ITU-T G.992.1 Asymmetrical Digital Subscriber Line (ADSL) Transceiver
Ref. 4 : T1E1.4/2001-007R3 In-Line Filter Standard

Ref. 5 : ITU-T K.21 Resistibility of Telecommunication Equipment Installed
in Customer Premises to Overvoltages and Overcurrents
Ref. 6 : ITU-T K.44 Resistibility tests for telecommunication equipment exposed

to overvoltages and overcurrents－Basic Recommendation

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

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3. Abbreviations:

ADSL Asymmetric Digital Subscriber Line
CO Central Office
CPE Customer Premise Equipment
POTS Plain Old Telephone Service
RT Remote Terminal

ADSL-NT Network termination of ADSL

4. Technical requirements:

4.1. Schematic:

The following drawing illustrate the schematic of this product.

4.2. ZHP-r Definition:

To facilitate testing of the In-Line Filter independently of the actual modem or specific
vendor,ZHP-r is defined to allow proper termination of the Line port during voice band
testing. The ZHP-r is valid only for voice band frequency. The combination of capacitors in
the ZHP-r is only representative. The input shall be 27nF however derived. ZHP-r
equivalent circuit is shown below.

RJ-11
Plug

RJ-11 Jack

0.056 uF

0.056 uF

0.47 mH

100 ohms

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

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4.3. Electrical Specification:

The low pass filter shall satisfy the following parametric limits shown in this table across the
Line side of this device.

Electrical requirements

Splitter parameters

Range Values

Splitter bandwidth DC to 4 kHz
Nominal voice band 0.3 kHz to 3.4 kHz
Ringing frequency 15.3 Hz to 68 Hz
ADSL band 30 kHz to 1104 kHz
Line Impedance Z

L

300 Hz to 3.4 kHz 600 ohms

Modem impedance 30 kHz to 1104 kHz 100 ohms

Operation voltage voice band

Nominal signal 21 mVpp to 5.4 Vpp
Ringing signal 40 Vrms to 150 Vrms

( 113 Vpp to 424 Vpp )
DC voltage 0 V to 105 V
Max. AC voltage 150 Vrms with –105 VDC

offset
Max. differential 320 V

Operation current voice band

Loop current < 100 mA

DC resistance

DC resistance Tip to Tip / Ring to Ring < 12 ohms
Isolation resistance Tip to Ring > 10 Mohms

Differential input blocking impedance

20 kHz > 2 kohms
30 kHz > 3 kohms
5 MHz to 10 MHz > 2 kohms

Line side

10 MHz to 400 MHz N / A

Voice band characteristics

Insertion loss between 600 ohms
resistive single filter

1004 Hz < 0.3 dB

With 5 filters 1004 Hz < 0.5 dB

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

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Electrical requirements

Splitter parameters

Range Values

200 to 3.4 kHz < 0.5 dB

Attenuation distortion between 600
ohms resistive single filter
( relative to 1004 Hz )

3.4 kHz to 4 kHz < 0.75 dB
200 to 3.4 kHz < 2.5 dB

With 5 filters

3.4 kHz to 4 kHz < 4 dB
SRL-L > 30 dB
ERL > 20 dB

600 ohms Return loss single filter

SRL-H > 17 dB
SRL-L > 20 dB
ERL > 13 dB

With 5 filters

SRL-H > 7 dB
SRL-L > 25 dB
ERL > 15 dB

Complex* ZNL-r Return loss single filter

SRL-H > 7 dB
SRL-L > 15 dB
ERL > 7 dB

With 5 filters

SRL-H > 1.5 dB

* 1330 ohms in parallel with the series connection of a 348 ohms resistor and a 100 nF capacitor

200 Hz to 1 kHz > 58 dB

Longitudinal conversion loss ( LCL )

1 kHz to 3 kHz > 53 dB

Delay distortion 200Hz to 4 kHz < 100 µs

2nd > 65 dB

Harmonic distortion

3nd > 65 dB
2nd > 60 dB

Inter-Modulation distortion

3nd > 65 dB

ADSL band characteristics

40 kHz > 45 dB

Common mode rejection

1.1 MHz > 45 dB

ADSL band attenuation 30 kHz > 26 dB

1 MHz > 65 dB

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 7 OF 13

4.4. DC characteristics:

All requirements of this specification can be met in the presence of all POTS loop currents
from 0 mA to 100 mA. This In-Line Filter can pass POTS tip-to-ring DC voltages of 0 V to
105 V and ringing signals of 40 Vrms to 150 Vrms at any frequencies from15.3 Hz to 68 Hz
superimposed on DC voltages in the range from 0 V to 105 V. The DC resistance from tip­to-ring at the Line port interface with the POTS interface shorted, shall be less than or equal
to 25 ohms for one filter.
The DC resistance from tip-to-ground and from ring-to-ground at the POTS interface with
the Line interface open shall be greater than or equal to 5 Megohms. The ground point shall
be local building or green wire ground. As an objective, the DC resistance should exceed
10MΩ.

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 8 OF 13

4.5. Test methods:

4.5.1. Insertion loss at 1004 Hz:

4.5.1.1. Description :

The test set-up is shown in Figure 1. The insertion loss from the source to the
termination shall be measured with and without the filter / ZHP-r combination
inserted.

4.5.1.2. Test configuration:

Figure 1. defines the test configuration and the value of the test components that
shall be used for transmission measurement in the voice band for the remote POTS
filter.
Impedance of signal source ＝ ZL，Impedance of the load ＝Z

L

Figure 1.

Note :

1. ZHP-r＝the impedance presented to the POTS connection by an ATU-R.

2. ZL＝real impedance 600 Ω.

3. Test apparatus: Function generator HP 33120A or equivalent ，Readout

oscilloscope HP 54621A or equivalent.

POTS
port

Line
port

Z

L

(load)

ZHP-r

(load)

Microfilter

Signal
source

Level

Meter

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 9 OF 13

4.5.2. Attenuation distortion in the voice band:

4.5.2.1. Description:

The variation of insertion loss with frequency shall be measured using the
configuration in Figure 2. The defined ZHP-r will be attached to the Line port of the
filter. The increase in attenuation distortion, relative to the 1004 Hz insertion loss,
caused by the POTS filter with the ZHP-r ( or modem ) load.

4.5.2.2. Test configuration:

Figure 2. defines the test configuration and the value of the test components that
shall be used for transmission measurement in the voice band for the remote
POTS filter.

Figure 2.

Note :

1. ZHP-r＝the impedance presented to the POTS connection by an ATU-R.

2. ZL＝real impedance 600 Ω.

3. Test apparatus: Function generator HP 33120A or equivalent ，Readout

oscilloscope HP 54621A or equivalent.

POTS
port

Line
port

Z

L

(load)

ZHP-r

(load)

Microfilter

Signal

source

Level

Meter

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 10 OF 13

4.5.3. Return Loss:

4.5.3.1. Description:

The return loss of each filter under the specified conditions, either with or without the
ZHP-r attached, shall be greater than the value specified in page 6.

4.5.3.2. Test configuration:

Figure 3. defines the test configuration and the value of the test components that
shall be used for impedance measurement in the voice band for remote POTS filter.
Impedance of the load Z1＝Z

L

& ZNL-r

Figure 3.

Note :

1. ZHP-r＝the impedance presented to the POTS connection by an ATU-R.

2. ZL＝real impedance 600 Ω.

3. ZNL-r＝1330 Ω in parallel with the series connection of a 348 Ω resistor and a
100nF capacitor.

4. Test apparatus: Impedance Analyzer HP 4284A or equivalent.

POTS
port

Line
port

Z

1

(load)

ZHP-r

(load)

Microfilter

Test
Equipment

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 11 OF 13

5. Environmental conditions:

5.1. Resistibility to overvoltages and overcurrents:

The splitter has to comply with requirements as per ITU-T K.21.

5.2. Climatic conditions:

5.2.1. Operating temperature:

Application indoor
Long time operation guarantee temperature ( 5 to 40 0C )
Short time operation guarantee temperature ( 0 to 50 0C )
( According to ETS 300 019, class 3.2 )

5.2.2. Storage and transport:

Low ambient temperature - 20 0C
High ambient temperature +85 0C

( According to MIL-STD-202 method 107 / QC-0-20 )

5.2.3. Operation humidity:

Long time operation guarantee humidity ( 5 to 85 % )

Short time operation guarantee humidity ( 5 to 90 % )

Short time : within 72 continuous hours and 15 days in a year

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 12 OF 13

6. Reliability conditions:

Sampling

Quantities

Test

Item

Description of Testing Test Condition Acceptance

D.V.T.

Pilot Run

Mass

Product

By Visual Examination or by

using X-Ray，Microscope etc.
to Examine sample.

1

Visual/Mechanical
Examination

Reference:QC-0-12&QC-0-22

No cracking ，
broken，marking
color changing

and lose marking
after washing.

2 4

According to clause 4.5
Electrical Specification，
pp. 16-17.

2 Electrical Characteristic

Reference: QC-0-16

No electrical
failure.

2 4

-20 0C → +85 0C，for 5 cycles.

3 Thermal Shock

Reference: MIL-STD-202
method 107 / QC-0-20

No electrical
failure.

1 2

+50 0C / 95 RH，96 hrs.

4

Temperature Humidity
Exposure

Reference: MIL-STD-202
method 103 / QC-0-11

No electrical
failure.

1 2

Random vibration /
Freq. : 5 ~ 500 Hz /
Sweep time : 1 hr. / axis /
Force : 2.4 grams

5 Vibration Test

Reference: MIL-STD-202
method 204 / QC-0-21

No electrical
failure &
mechanical
faults.

1 box 1 box

Product Specification

MF612A

Data sheet subject to change without notice RDPS-MF039(R0)02/22/2002

SHEET 13 OF 13

7. Mechanical conditions:

7.1. Mechanical:

Note: Unit mm

7.2. Connector information:

Position Type Tip Ring

Line RJ 11 Plug Pin 3 Pin 4

Phone RJ 11 Jack Pin 3 Pin 4

PHONE

LINE