LL1592
High Level Line Input Transformer
The transformer is designed for high end pro audio line input applications with or without phase splitting. The windings are arranged to give a high degree of symmetry if the transformer is used for phase splitting.
The dual-coil structure also greatly improves immunity to external magnetic fields from e.g. power supplies and motors. Primary and secondary windings are separated by electrostatic shields.. The transformer is housed in a mu-metal can.
| Spacing between pins | Spacing between rows of pins | Dimensions (L x W x H above PCB, in mm): |
Recommended PCB hole diameter |
| 5.08mm (0.2") | 35.56 mm (1.4") | 47 x 28 x 20 (mm) | 1.5mm |
| Static resistance of each primary: | 270 Ω |
| Static resistance of each secondary : | 270 Ω |
| Weight | 83g |
| Self resonance point | > 120 kHz |
| Distortion (source impedance 600Ω) | + 23 dBU < 0.1% @ 40Hz |
| + 29 dBU < 1% @ 40Hz: 1 % | |
| Suggested termination for best square wave response, serial-serial connection : | 7k Ω + 400 pF |
| Frequency response (serial connection , source 600 Ω, load 20 kΩ , no terminating network) | 10 Hz - 50 kHz +/- 1.0 dB |
| Frequency response (serial connection , source 600 Ω, load 100 kΩ in parallel with 7k + 400pF) | 10 Hz - 100 kHz +/- 1.0 dB |
| Phase splitting balance(connection 2:1+1. Source 1kΩ, load (20kΩ +20kΩ) in parallel with 7k + 400pF) | > 46 dB, 10 Hz - 50 kHz |
| Phase response(deviation from linear phase) (source 600 ohm, load 10k (Audio Precision)) | 10 Hz - 20 kHz, < 2° |
| Isolation between windings / between windings and shield : | 3 kV / 1.5 kV |
Associated downloads
