Signal Processing Systems : Related Signal Processing Products : Jensen Transformers, Inc. - CI-1RR

Audio Ground Isolator

Model: CI-1RR

Eliminates the inherent ground noise coupling mechanism
Common-mode ground noise rejection of 95dB at 60Hz
Wide bandwidth -3dB at 0.25Hz and 50kHz
Handles signals up to 7V at 20Hz or 11V at 30Hz
Input impedance is 49kohms when driving a typical 47kohms input

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Single-channel audio input isolator, when used in an unbalanced audio consumer interface, this isolator not only eliminates hum and buzz but also enhances audio quality by reducing spectral contamination, due to ultrasonic and RF interference. To avoid excessive high frequency losses, no more than 3ft of cable should be used on its output. Wide bandwidth -3dB at 0.25Hz and 50kHz.

Eliminates the inherent ground noise coupling mechanism
Common-mode ground noise rejection of 95dB at 60Hz
Wide bandwidth -3dB at 0.25Hz and 50kHz
Handles signals up to 7V at 20Hz or 11V at 30Hz
Input impedance is 49kohms when driving a typical 47kohms input

Spec Sheet available - Yes

Operating Temperature (Maximum): 158 F
Operating Temperature (Minimum): 32 F
Input Impedance: 48.6 kohms (100Hz, -10dBV, test circuit 1)
Insertion Loss: 0.82 dB (1kHz, +4dBu, test circuit 1)
Deviation from linear phase (DLP): +1.4/-0 ° (10Hz to 2kHz, -20dBV, test circuit 1)
Distortion (THD): 0.04 % (20Hz, -10dBv, test circuit 1)
Maximum 20Hz input level: -19 dBV (1% THD, test circuit 1)
Common-mode rejection ratio (CMRR): 95 dB (60Hz, test circuit 2)
Output Impedance: 4.65 kohms (100Hz, test circuit 1)
Input DC Resistances: 2.26 kohms
Output DC Resistances: 1.90 kohms
Capacitances at 1kHz: 105 pF (1kHz, input to output)
Allowable Source Impedance: 600 ohms (output impedance of device driving the ISO-MAX input)
Allowable Load Impedance: 47 kohms (input impedance of device loading the ISO-MAX output)