LR (Inductor, Resistor) RIAA Module LR-01

Inductors/Resistor network used for High Quality, High Accuracy Phono Preamp designs in Vacuum Tube or Solid State Technology.Two LR-01 units are required for a stereo phono preamplifier. LR-01 contains an input driver able to make the unit insensitive to external driving impedance, a sink/source current combination for a perfect DC, low offset, high sound quality coupling and a cascade LR network. Unit requires two external, dual  power supplies, moderately stable. LR-01 cannot be used in SPLIT RIAA designs.

Fig. 1 Block Diagram of the PAEng LR-01 RIIA Module 

Characteristics

Input Impedance	2.14kWmin  @ 1kHz (-40°C)
Output Impedance	16kWmax  @ 1kHz
BandWidth	29.8kHz
Accuracy	0.133dB (-40°C)	0.115dB (30°C)	0.092 (100°C)
Power Consuption	467mW
Gain	-20.4dB @ 1kHz
PSRR	43dB
Input Voltage	5Vrmsmax
THD	0.1% MAX @ 100°C
Output Voltage Offset	19mV typical

Fig.2 Simulated Response of LR-01 with Inverse RIAA network (Y-scale 0.2dB/DIV)

Fig 3 Mechanicals & Pinout (DRAFT)

Fig. 5 Target Application in Vacuum Tube Phonos

LR-01 & TLR  Modules are available under request.

Fig.6 Application Example