Ceramic Discriminator

Ceramic Discriminator

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Consisting of a piezoelectric resonator (wide band type), Ceramic Discriminator, is widely used for various mobile communications equipment. The compact size and light weight of the component makes it perfect for a wide range of applications that require downsizing including mobile phones. The discriminator is stable and highly sensitive owing to which it delivers superior performance while consuming little power. Furthermore, it can be combined with a number of other IC’s owing to which  its scope of applications increases significantly.

Technical Specifications:

Part Number Center Frequency (Fn) (KHz) Demodulation 3dB band width Demodulation output (455KHz) Distortion Factor (455KHz) Other specification
Resonant Freq. Fr Antiresonant Freq. Fa F (Fa-Fr) Resonant Resistance Rt Capacitance C

455+1.5 KHz 48+1.5KHz 70 max 600pF+20%
CDBM455C7 455+2 +4.0KHz min 340+60mV 2.5% max

CDBM455C9 455+2 +5.0KHz min 100mV 1.5% max


429+2.0 KHz
46KHz min 70 max 580pF+20%
CDBM455C34 455+2 +4.0KHz min 65+20mV 2.5% max


470+1.0KHz 43+2.0KHz 300 max 140pF+20%
CDBM455C16 455+2 +4.0KHz min 190+50mV 2.0% max

CDBM455C18 455+2 +3.0KHz min 180+40mV 2.0% max

CDBM455C24 455+2 +4.0KHz min 100+40mV 2.0% max

CDBM455C29 455+2 +4.0KHz min 125+30mV 2.5% max

CDBM455C28 455+2 +4.0KHz min 40+20mV 3.0% max

CDBM455C32 455+2 +4.0KHz min 40+20mV 3.0% max

Part Number 3dB Band Width (kHz) max 20dB Band width (kHz) max Insertion Loss (dB) max Spurious Attenuation (9-12MHz) (dB) min
LTCS 10.7MS3 180+40 470 4.5+2.0 30
LTCS 10.7MS2 230+50 510 3.5+2.0 30
LTCS 10.7MA5 280+50 590 3.0+2.0 30
LTCS 10.7MA20 330+50 700 3.0+2.0 30