LL1531
High Impedance Line Input Transformer
The transformer consists of two coils, each with one primary and one secondary winding separated by an electrostatic shield. The two secondary windings are internally connected in series.
The core is a high permeability mu-metal lamination core.
The transformer is magnetically shielded by a mu-metal housing.
| Spacing between pins | Spacing between rows of pins | Weight: | Recommended PCB hole diameter |
| 3.81mm (0.15") | 20.32 mm (0.8") | 25g | 1.5mm |
| Static resistance of each primary: | 500 Ω |
| Static resistance of each secondary : | 1.3k Ω |
| Self resonance point | > 80 kHz |
| Distortion (primaries connected in series, source impedance 600Ω) | + 10 dBU primary level, 50 Hz: 0.2% |
| + 20 dBU primary level, 50 Hz: 1 % | |
| Optimum termination for best square-wave response (source imp. 600Ω) | 8k Ω in series with 1.2 nF |
| Frequency response (source and load as above) | 10 Hz - 25 kHz +/- 0.3 dB |
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