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TDA7541WTR 데이터시트(PDF) 11 Page - STMicroelectronics |
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TDA7541WTR 데이터시트(HTML) 11 Page - STMicroelectronics |
11 / 76 page TDA7541 Electrical specifications and characteristics 11/76 1.12 ICCMIX1 Supply Current AM ON 20 24 mA 1.13 ICCIF Supply Current 4 5 mA 2. Reference voltages 2.1 VREF1 Internal reference voltage IREF1 = 0mA 4.855.2 V 2.2 VREF2 Internal reference voltage IREF2 = 0mA 2.4 2.5 2.6 V 3. I2C bus interface 3.1 fSCL Clock frequency 400 kHz 3.2 VIL Input low voltage 1 V 3.3 VIH Input high voltage 3 V 3.4 IIN Input current -5 5 µA 3.5 VO Output acknowledge voltage IO = 1.6mA 0.4 V Table 5. Globals (continued) (Tamb = 25°C, VCC1 = VCC2 = VCCMIX1 = VCCVCO = VCCIF = 8.5V, fXtal = 10.25 MHz, in application circuit, unless otherwise specified) Item Symbol Parameter Test conditions Min. Typ. Max. Unit Table 6. FM section (Tamb = 25°C, VCC1 = VCC2 = VCCMIX1 = VCCVCO = VCCIF = 8.5V, fXtal = 10.25 MHz, fRF = 98MHz, dev = 40 kHz, fMod = 1 kHz, in application circuit, unless otherwise specified) Item Symbol Parameter Test conditions Min. Typ. Max. Unit 4. Wide band RF AGC 4.1 V8-10 Lower threshold start V13 = 2.5V,RFK “0” 79 dB μV 4.2 V8-10 Upper threshold start V13 = 2.5V,RFK”0” 93 dB μV 4.3 Δ V8-10 Control range RF KAGC KAGC”000”,RFAGC”00”, V37 = 3.0….3.7V, RFK”1” 58 11 5. Narrow band IF & keying AGC 5.1 V61 Lower threshold start KAGC = off, V8-10 = 0mVRMS 82 dBµV 5.2 V61 Upper threshold start KAGC = off, V8-10 = 0mVRMS 94 dBµV 5.3 V61 Max. IFAGC threshold with KAGC KAGC”000”,IFAGC”00”, V37 = 3.0V 97 dBµV 5.4 V37 Start point KAGC KAGC”000”,IFAGC”00”, 3.2 3.4 3.6 V 5.5 Δ V61 Control range IF KAGC KAGC”000”,IFAGC”00”, V37 = 3.2….3.9V 12 15 18 dB 6. AGC time constant output 6.1 V13 Max. AGC output voltage V8-10= 0mVRMS VREF1 +VBE V 6.2 V13 Min. AGC output voltage V8-10 = 100mVRMS 0.5 V 6.3 I13 Min. AGC charge current V8-10= 0mVRMS,V13 = 2.5V -33 -25 -17.5 µA |
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