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TDA7420 Datasheet(PDF) 9 Page - STMicroelectronics |
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TDA7420 Datasheet(HTML) 9 Page - STMicroelectronics |
9 / 29 page ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Test Condition Min. Typ. Max. Unit VTRMIN Trigger Threshold (*) 1) minimum Measured with NBT = 000 VPEAK = 1.2V D2 on byte 2 = 1 D2 on byte 2 = 0 100 150 30 200 mVp VTRMIN Trigger Threshold 1) maximum Measured with NBT = 111 VPEAK = 1.2V D2 on byte 2 = 1 D2 on byte 2 = 0 130 185 65 250 mVp VTRSTEP Trigger Threshold Step Size 5 mVp VTRNOISE Noise Adjusted Trigger Threshold 2) Measured with VPEAK = 1.4V D2 on byte 2 = 0 NAT = 00 NAT = 01 NAT = 10 NAT = 11 140 180 240 280 mVp mVp mVp mVp VPEAK Rectifier Voltage D2 on byte 2 = 1 VMPX = 0mV 0.9 V VMPX = 50mV f = 200KHz 1.5 V VMPX = 100mV f = 200KHz 2.0 V VRECTDEV Deviation Dependent Rectifier Voltage 3) Measured with VMPX = 500mV (75KHz dev.) OVD = 00(off) OVD = 01 OVD = 10 OVD = 11 0.9 1.2 2.0 2.8 V V V V VRECTFS Field Strength Controlled Rectifier Voltage 4) Measured with VMPX = 0mV VSB-VR = -500mV (fully mono.) FSC = 00(off) FSC = 01 FSC = 10 FSC = 11 0.9 1.3 1.9 2.4 V V V V TS Suppression Pulse Duration CBLANK = 330pF 40 µs IOS Input Offset Current During Suppression Time 10 pA (*) All thresholds are measured by using a pulse with TR =2 µs, THIGH =2µs and TF =10µs. The repetition rate must not increase the PEAK voltage. 1) NTB represents bits D0 - D2 of NB byte 1 2) NAT represents bits D3 - D4 of NB byte 1 3) OVD represents bits D5 - D6 of NB byte 1 4) FSC represents bits D0 - D1 of NB byte 2 NOISE BLANKER PART FEATURES: INTERNAL 2nd ORDER 140KHz HIGH-PASS FILTER NOISE RECTIFIER OUTPUT FOR SIGNAL QUALITY DETECTION PROGRAMMABLE TRIGGER THRESHOLD TRIGGER THRESHOLD DEPENDENT ON HIGH FREQUENCY NOISE WITH PRO- GRAMMABLE GAIN ADDITIONAL CIRCUITS FOR DEVIATION AND FIELD STRENGTH -DEPENDENT TRIG- GER ADJUSTMENT BLANKING TIME PROGRAMMABLE BY EX- TERNAL CAPACITOR VERY LOW OFFSET CURRENT DURING HOLD TIME DUE TO OPAMPS WITH MOS INPUTS VTH VMPX DC-LEVEL TR THIGH TF Time D94AU185 TDA7420 9/29 |
Número de pieza similar - TDA7420 |
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Descripción similar - TDA7420 |
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