LL1576
Microphone Input Transformer
The LL1576 is high performance microphone input transformers/line-box transformers with high permeability mu-metal cores and high bandwidth coils. The LL1576 uses the same pin-out as our well known microphone transformer LL1538.
LL1576 primary and secondary windings are separated by electrostatic shields. The very low leakage inductance and thus excellent frequency response is achieved by a two-coil, three-section per coil winding structure.
The transformer is encapsulated in mu-metal cases for magnetic shielding.
| Spacing between pins | Spacing between rows of pins | Weight | Recommended PCB hole diameter |
| 5.08mm (0.2") | 27.94 mm (1.1") | 46g | 1.5mm |
| Static resistance of each primary: | 50 Ω |
| Static resistance of each secondary : | 1.5 kΩ |
| Dimensions:(Length x Width x Height above PCB) | 38 x 24 x 17 (mm) |
| Turns ratio | 1+1 : 7 |
| Primary level at 0.2 % THD, 50 Hz signal (Primaries connected in parallel, source impedance 50Ω) |
+2 dBU (sec. level +19 dBU) |
| Primary level at 1 % THD, 50 Hz signal (Primaries connected in parallel, source impedance 50Ω) |
+ 12 dBU (sec. level +29 dBU |
| Frequency response +/- 0.5 dB to balanced input (Signal level 0 dBU, source 200Ω, no termination) |
15 Hz ~ 50 kHz |
| Frequency response +/- 0.5 dB to balanced input (Signal level -10 dBU, source 50Ω, load:) |
5 Hz ~ 40 kHz, 30 kΩ + 200 pF |
| Isolation between windings / between windings and shield : | 4 kV / 2 kV |
Associated downloads
