Jensen Transformers DIN-DB Specifications

DIN MODULE - 12:1 "DIRECT BOX"

DUAL FARADAY SHIELDS FOR HIGH ISOLATION

M Converts line levels to balanced mic level output
M Stops "hum and buzz" problems in musical instrument hook-ups
M Allows use of long cables without high frequency loss
M High common-mode rejection: 100 dB at 60 Hz
M Excellent frequency response and time domain performance

When loaded by the 1.5 kS input impedance typical of mic preamps, this module
has a 200 kS input impedance, making it ideal for high impedance sources. It can
be used with or without the input and output attenuator pads to accommodate
a wide range of signal levels. A 30 dB magnetic shield package is standard.

DIN -DB

MODULE SCHEMATIC DIAGRAM

DIN-DB SPECIFICATIONS (all levels are input unless noted)

PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM

Input impedance, Zi 1 kHz, 0 dBu, test circuit 1 130 kS 141 kS 150 kS

Voltage gain 1 kHz, 0 dBu, test circuit 1 !22.2 dB !22.0 dB !21.8 dB

Magnitude response,
ref 1 kHz

Deviation from linear phase (DLP) 20 Hz to 20 kHz, +4 dBu, test circuit 1 +1.2/!0E ±2.0E

Distortion (THD)

Maximum 20 Hz input level 1% THD, test circuit 1 +19.5 dBu +21.5 dBu

Common-mode rejection ratio (CMRR)
unbalanced source

Output impedance, Zo 1 kHz, test circuit 1 145 S 150 S 155 S

DC resistances

Capacitances @ 1 kHz

Turns ratio 11.51:1 11.52:1 11.53:1

Temperature range operation or storage 0E C70E C

Breakdown voltage
(see IMPORTANT NOTE below)

20 Hz, +4 dBu, test circuit 1 !0.25 dB !0.08 dB 0.0 dB

20 kHz, +4 dBu, test circuit 1 !0.25 dB !0.07 dB +0.1 dB

1 kHz, +4 dBu, test circuit 1 <0.001%

20 Hz, +4 dBu, test circuit 1 0.036% 0.10%

60 Hz, test circuit 2 100 dB

3 kHz, test circuit 2 55 dB 65 dB

primary (pin 5 to pin 8) 4.6 kS

secondary (pin 1 to pin 4) 62 S

primary to shield and case 60 pF

secondary to shield and case 115 pF

primary or secondary to shield and case, 60 Hz,
1 minute test duration

250 V RMS

All minimum and maximum specifications are guaranteed. Unless noted otherwise, all specifications apply at 25EC. Specifications subject to change
without notice. All information herein is believed to be accurate and reliable, however no responsibility is assumed for its use nor for any infringements of
patents which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Jensen Transformers, Inc.
IMPORTANT NOTE: This device is NOT intended for use in life support systems or any application where its failure could cause injury or death. The
breakdown voltage specification is intended to insure integrity of internal insulation systems; continuous operation at these voltages is NOT recommended.
Consult our applications engineering department if you have special requirements.

JENSEN TRANSFORMERS, INC., 7135 Hayvenhurst Avenue, Van Nuys, CA 91406-3807, USA

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[phone] • FAX [phone] • www.jensen-transformers.com