SM540-1 & PT541-1 ADSL Line Transformers

Features

■

For use with Alcatel’s MTK-20140

ADSL chipset

■

Excellent Total Harmonic Distortion

(THD) Performance

■

Both SMT and Thru-Hole package version

■

Small size

■

Operating temperature -40 °C to +85 °C

■

Designed to meet UL1950 and EN60950

supplementary insulation requirements

for operating voltages up to 250 Vrms

■

Lead free version available (see How to

Order)

■

Lead free versions are RoHS compliant*

Applications

■

ADSL - Alcatel MTK20140

Electrical Specifications @ 25 °C

Turns Ratio (1-4):(10-7) (line to chip)

SM540-1 ................................1:1 ±2 %

PT541-1 ................................2:1 ±2 %

OCL @ 10 kHz, 0.1 V

(1-4) with (2-3) shorted

SM540-1........................480 µH ±10 %

PT541-1 ........................410 µH ±10 %

Leakage Inductance @ 300 kHz 0.1 V

(1-4) with (2-3), (7-10), (8-9) shorted

SM540-1 ........................10.0 µH max.

PT541-1 ............................6.5 µH max.

Longitudinal Balance

30 kHz to 1.1 MHz ............-40 dB min.

Insertion Loss

@ 100 kHz and 1.1 MHz ..........<1.0 dB

Isolation Voltage ............1500 Vrms max.

DC Resistance

(1-4) with (2-3) shorted

SM540-1 ............................1.0 Ω max.

PT541-1 ..............................0.6 Ω max.

THD Linearity

SM540-1 @ 10 kHz (min.) ..-72 dB typ.

PT541-1 @ 20 kHz (min.) ....-72 dB typ.

Application

SM540-1........................................CPE

PT541-1 ..........................................CO

Product Dimensions

Electrical Schematic

DIMENSIONS ARE:

MM

(INCHES)

TOLERANCE: ±

0.25

(.010)

SM540-1

(DATECODE)

5

4

3

2

1

6

7

8

9

10

.711 ± .050

(.028 ± .002)

Recommended PAD layout

10 PLCS.

1.30 ± .050

(.051 ± .002)

10 PLCS.

13.46

(.530)

MAX.

10.00

(.394)

MAX.

17.65

(.695)

MAX.

13.50

(.531)

MAX.

12.32

(.485)

MAX.

12.07

(.475)

MAX.

2.50

(.098)

2.54

(.100)

2.50

(.098)

10.00

(.394)

15.37

(.605)

0.13

(.005)

10 SURFACES

SMT

10

8

9

7

1

3

2

4

SM540-1

PT541-1

THT

PT541-1

(DATECODE)

2.6

(.102)

DIA.

10 PLCS.

MIN.

14.0

(.551)

MAX.

14.2

(.559)

MAX.

12.70

(.500)

MAX.

0.6

(.024)

10.00

(.394)

10.00

(.394)

2.50

(.098)

Packaging Specifications

SM540-1E* ..........................200 pcs./reel

PT541-1 ................................60 pcs./tray

*”E” suffix at end of part number

designates tape & reel packaging, e.g.

SM540-1E.

03/05

*RoHS Directive 2002/95/EC Jan 27 2003 including Annex

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

How to Order

SM540-1E or PT541-1 __

Model

Termination

Blank = Tin-lead

L = Tin only (lead free)