AS7787-A_13 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – ADSL Transformers

Document 244-1
ADSL
Transformers
For Analog Devices
chipsets
This product is not RoHS-compliant. Contact Coilcraft
for current status or possible alternatives.
These transformers have been designed to provide op-
timum performance with various ADSL chip sets from
Analog Devices.
They feature a compact size, minimum DC resistance
and very low leakage inductance. Primary inductance is
stable from -40°C to +85°C and the longitudinal balance
is optimized for the best overall performance at the ADSL
transmission speed. Most parts have been designed to
meet UL 1950 requirements.
For free evaluation samples or to discuss custom designs,
please contact Coilcraft.
SPECIFICATIONS

Part
number Style
Chip set
AS7787-A
AS8456-A
AS8923-A
AS8908-A
AS8925-A
AS8924-A
THT
SMT
THT
SMT
THT
SMT
AD20MSP910/918 CO/CPE
AD20MSP910/918 CO/CPE
AD20MSP930 CO
AD20MSP930 CO
AD20MSP930 CPE
AD20MSP930 CPE
Line side
inductance
(mH)
5.0 ± 10%
5.0 ± 10%
2.03 min
2.03 min
2.42 min
2.42 min
Leakage
inductance
max (µH)
DCR max (Ohms)
Chip side     Line side
16
1.21 (10-8), 1.65 (9-7) 1.42 (1-3, 2-4)
16
1.21 (10-8), 1.65 (9-7) 1.42 (1-3, 2-4)
7.5
0.60 (1-3, 2-4) 0.60 (10-8), 0.60 (9-7)
7.5
0.60 (1-3, 2-4) 0.60 (10-8), 0.60 (9-7)
7.5
0.55 (1-3, 2-4) 0.58 (10-8), 0.58 (9-7)
7.5
0.55 (1-3, 2-4) 0.58 (10-8), 0.58 (9-7)

Part
number
AS7787-A
AS8456-A
AS8923-A
AS8908-A
AS8925-A
AS8924-A
Dielectric
strength Turns ratio
(V)
line:chip
Capacitance
max (pF)
1875
1875
2300
2300
2300
2300
1 : 1
55
1 : 1
55
1.1 : 1
1.1 : 1
1.2 : 1
1.2 : 1
1. All electrical specifications referenced to line side.
2. Operating temperature range -40°C to +85°C.
3. Electrical specifications at 25°C.
Longitudinal
balance
min (dB)
40 (20 kHz – 1.1 MHz)
40 (20 kHz – 1.1 MHz)
40 (20 kHz – 1.1 MHz)
40 (20 kHz – 1.1 MHz)
40 (20 kHz – 1.1 MHz)
40 (20 kHz – 1.1 MHz)
THD
@ 20 kHz
typ (dB)
–89
–89
–85
–85
–85
–85
Designed
to meet
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
US [e-mail] ^notice.
UK +44-1^P2^l3^e6^a-^s7^e30^c5^h9^e5^{ck [e-mail].}
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 244-1  Revised 10/20/10
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.