■ Designed to meet UL1950 and EN60950
supplementary insulation requirements
for operating voltages up to 250 Vrms
■ Lead free version available (see How to
Order)
Features
■ For use with Analog Device’s
AD20msp910 / AD20msp918 ADSL
chipsets
PT539-1
■ Excellent Total Harmonic Distortion (THD)
performance in a small size
SM538-1
■ Lead free versions are RoHS compliant*
■ SMT and thru-hole package version
■ Operating temperature -40 °C to +85 °C
Applications
■ ADSL - Analog AD20msp910/918
SM538-1 & PT539-1 ADSL Line Transformers
Electrical Specifications @ 25 °C
Product Dimensions
Turns Ratio ................................1:1 ±± ꢀ
OCL @ 10 kHz, 0.1 V
SMT
(1-4) with (±-3) shorted
......................................5.0 mH ±10 ꢀ
(10-7) with (8-9) shorted
15.37
(.605)
.711 ± .050
(.028 ± .002)
10 PLCS.
2.50
(.098)
2.54
(.100)
......................................5.0 mH ±10 ꢀ
Leakage Inductance @ 100 kHz 0.1 V
(1-4) with (±-3), (8-9), (10-7) shorted
........................................18.0 µH max.
Longitudinal Balance
±5 kHz to 1.1 MHz ..............40 dB min.
Insertion Loss @ 100 kHz ..........< 0.5 dB
Isolation Voltage ............1500 Vrms max.
Load Resistance ............................100 Ω
DC Resistance
5
4
6
7
10.00
(.394)
13.46
(.530)
10.00
(.394)
SM538-1
3
±
1
8
MAX.
MAX.
2.50
(.098)
(DATECODE)
9
10
1.30 ± .050
(.051 ± .002)
17.65
MAX.
(.695)
10 PLCS.
Recommended PAD layout
13.50
MAX.
(.531)
(1-4), (10-7) ............................3 Ω max.
THD Linearity
SM538-1 @ 300 kHz ..........-60 dB typ.
PT539-1 @ 30 kHz..............-80 dB typ.
Package
SM538-1 ......................................SMT
PT539-1 ........................................THT
12.32
(.485)
12.07
(.475)
MAX.
MAX.
0.13
(.005)
Packaging Specifications
10 SURFACES
SM538-1E* ..........................±00 pcs./reel
PT539-1 ................................60 pcs./tray
*”E” suffix at end of part number
designates tape & reel packaging, e.g.
SM538-1E.
THT
Electrical Schematic
PT539-1
(DATECODE)
1
10
3
2
8
9
4
7
12.70
(.500)
MAX.
How to Order
SM538-1E or PT539-1 __
2.6
(.102)
MIN.
Model
0.6
(.024)
DIA.
2.50
(.098)
Termination
Blank = Tin-lead
L = Tin only (lead free)
10.00
(.394)
10.00
(.394)
14.2
10 PLCS.
14.0
MAX.
(.551)
MAX.
(.559)
MM
(INCHES)
0.25
(.010)
DIMENSIONS ARE:
TOLERANCE:
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.
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