AS8925-A [COILCRAFT]
ADSL Transformers; ADSL变压器
| 型号： | AS8925-A |
| 厂家： | 
Coilcraft lnc. |
| 描述： | ADSL Transformers |
| 文件： | 总2页 (文件大小：128K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Document 244-1
For Analog Devices
ADSLTransformers chipsets
This product is not RoHS-compliant. Contact Coilcraft
for current status or possible alternatives.
These transformers have been designed to provide
optimum 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 de-
signed to meet UL 1950 requirements.
For free evaluation samples or to discuss custom de-
signs, please contact Coilcraft.
SPECIFICATIONS
Line side
inductance
(mH)
Leakage
inductance
max (µH)
DCR max (Ohms)
Part
number
Style
Chip set
Chip side
Line side
AS7787-A Leaded AD20MSP910/918 CO/CPE
5.0 10ꢀ
5.0 10ꢀ
2.03 min
2.03 min
2.42 min
2.42 min
16
16
7.5
7.5
7.5
7.5
1.21 (10-8), 1.65 (9-7)
1.21 (10-8), 1.65 (9-7)
0.60 (1-3, 2-4)
1.42 (1-3, 2-4)
1.42 (1-3, 2-4)
0.60 (10-8), 0.60 (9-7)
0.60 (10-8), 0.60 (9-7)
0.58 (10-8), 0.58 (9-7)
0.58 (10-8), 0.58 (9-7)
AS8456-A
AS8923-A Leaded
AS8908-A SMT
AS8925-A Leaded
SMT
AD20MSP910/918 CO/CPE
AD20MSP930 CO
AD20MSP930 CO
AD20MSP930 CPE
AD20MSP930 CPE
0.60 (1-3, 2-4)
0.55 (1-3, 2-4)
0.55 (1-3, 2-4)
AS8924-A
SMT
Dielectric
strength
(V)
Longitudinal
balance
min (dB)
THD
@ 20 kHz
typ (dB)
Part
number
Turns ratio
line:chip
Capacitance
max (pF)
Designed
to meet
AS7787-A
AS8456-A
AS8923-A
AS8908-A
AS8925-A
AS8924-A
1875
1875
2300
2300
2300
2300
1:1
1:1
1.1:1
1.1:1
1.2:1
1.2:1
55
55
40 (20 kHz
–
–
–
–
–
–
1.1 MHz)
1.1 MHz)
1.1 MHz)
1.1 MHz)
1.1 MHz)
1.1 MHz)
-89
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
UL 1459, 1950
40 (20 kHz
40 (20 kHz
40 (20 kHz
40 (20 kHz
40 (20 kHz
-89
-85
-85
-85
-85
1. All electrical specifications referenced to line side.
2. Operating temperature range -40°C to +85°C.
3. Electrical specifications at 25°C.
Specifications subject to change without notice.
Please check our website for latest information. Document 244-1 Revised 09/25/08
© Coilcraft, Inc. 2008
Document 244-2
ADSL Transformers for Analog Devices
Leaded Transformers
Surface Mount Transformers
B
Dot above pin1
10
1
C
C
D
A
6
5
B
E
E
6
5
1
F
6
5
1
A
F
F
H
G
G
10
10
Recommended
Board Layout
Recommended
Land Pattern
A max B max C max D min
E
F typ G dia H dia
0.100 0.400 0.100 0.013 0.032
2,54 10,16 2,54 0,33 0,82
A max B max C max
E
F typ
G typ
0.550 0.550 0.500
13,97 13,97 12,70
0.530
0.699
0.500
12,70
0.590
14,99
0.098
2,50
0.050 × 0.061
1,27 × 1,55
13,46 17,75
Schematics
AS8923-A, AS8908-A
AS8925-A, AS8924-A
AS7787-A, AS8456-A
Line
side
Chip
side
Line
side
Chip
side
10
10
1
1
3
2
8
9
8
9
3
2
4
7
7
4
Specifications subject to change without notice.
Please check our website for latest information. Document 244-2 Revised 09/25/08
© Coilcraft, Inc. 2008
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