View LL1545A_1264764.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Tibeliusgatan 7 S-761 50 NORRTALJE SWEDEN
Phone Fax
International +46 - 176 13930 +46 - 176 13935
Domestic 0176-13930 0176-13935
Audio Transformer LL1545A
LL1545A is a general-purpose audio transformer with a variety of connection alternatives. The transformer is built up from two coils, each with a secondary winding surrounded by shields and two primary windings. This structure results in an excellent frequency response. The transformer can be used in many different applications such as a high impedance line input transformer (accepting signal levels of 22 dBU @ 40 Hz with primaries in series), for splitting or as a microphone input transformer. The LL1545A is made with a mu-metal core and is housed in a mu-metal can. Refer to page 2 of this sheet for termination alternatives. Turns ratio: 1+1+1+1:2+2 Dims: (Length x Width x Height above PCB (mm)) 37 x 22.5 x 14.5 Pin Layout (viewed from component side) and Windings Schematics:
8 7 6 5 4 3 2 1 16 15 14 13 11 10 9 1 2 3 4 8 7 6 5 9 10 11 14 16 15 Can + Core 13
LL1545A
(top view)
Spacing between pins: Spacing between rows of pins: Weight: Rec. PCB hole diameter: Static resistance of each primary (average): Static resistance of each secondary (average): Self resonance point: Recommended load for best square-wave response (Termination alternative A below): Frequency response (source 600 , load (6.7 k + 470 pF) in parallel with 56 k ): Loss across transformer (at midband with termination as above): Core: Isolation between windings / between windings and shields:
2.54 mm (0.1") 22.86 mm (0.9") 46 g 1.5 mm 147 295 > 220 kHz 6.7 k + 470 pF 10 Hz - 70 kHz +/- 0.5 dB @ 0 dBU 0.3 dB Mu-metal 3 kV / 1.5 kV
Data at different termination alternatives, showed on page 2 of this data sheet. Termination Turns Copper Resistance Idle impedance Suggested Use THD < 0.2%@40 Hz Alternative ratio prim/sec @40 Hz, 0dBU primary level / real source impedance A 1:1 590 / 590 80 k / 80 k 10 k / 10 k 22 dBU / 600 B 1:1 147 / 147 20 k / 20 k 600 / 600 16 dBU / 150 C 1:2 147 / 590 20 k / 80 k 600 / 2.5 k 16 dbU / 150 D 1:2 37 / 147 5 k / 20 k 200 / 1 k 10 dBU / 37.5 E 1:4 37 / 590 5 k / 80 k 200 / 3.2 k 10 dBU / 37.5 F (Split) 2:1+1 590 / 295 + 295 G (Split) 1:1+1 147 / 295 + 295 Left side can also be connected as BCenterTap (1:1+1) or D (1:2+2)
R000113
LL1545A , page 1
LL1545A Connection alternatives (Left side is input if not stated otherwise) !!!! Pin side view !!!!
1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8
A
CENTER TAP
9 10 11 13 14 15 16
A
13 14 15 16
CT
1 2 3 4 5 6 7 8
B
9 10 11 13 14 15 16 CT
1 2 3 4 5 6 7 8
B
CENTER TAP
9 10 11 13 14 15 16
1 2 3 4 5 6 7 8
C
9 10 11 13 14 15 16 CT
1 2 3 4 5 CENTER TAP 6 7 8
C
9 10 11 13 14 15 16
1 2 3 4 5 6 7 8
9 10 11
D
13 14 15 16
1 2 3 4 5 6 7 8
9 10 11
E
13 14 15 16
OUT 1
OUT 2
1 2 3 4 5 6 7 8
F
SPLIT
9 10 11 13 14 15 16
IN +
IN -
1 2 3 4 5 6 7 8
G
SPLIT
9 10 11 13 14 15 16
OUT 1 Out 1 GND In GND Out2 GND OUT 2
LL1545A , page 2

▲Up To Search▲

Price & Availability of LL1545A

	To Download LL1545A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .