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LNBH23PPR 数据表(PDF) 20 Page - STMicroelectronics |
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LNBH23PPR 数据表(HTML) 20 Page - STMicroelectronics |
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20 / 32 page ![]() Electrical characteristics LNBH23 20/32 Symbol Parameter Test conditions Min. Typ. Max. Unit FDETIN Tone detector frequency capture range 0.4VPP sine wave (2) 19 22 25 kHz VDETIN Tone detector input amplitude Sine wave signal, 22 kHz 0.3 1.5 VPP ZDETIN Tone detector input impedance 150 k Ω VOL DSQOUT pin logic LOW DETIN Tone present, IOL=2mA 0.3 0.5 V IOZ DSQOUT pin leakage current DETIN Tone absent, VOH=6V 10 µA VIL DSQIN,TTX,13/18, EXTM pin logic Low 0.8 V VIH DSQIN,TTX,13/18, EXTM pin logic High 2V IIH DSQIN,TTX,13/18, EXTM pin input current VIH=5V 15 µA IOBK Output backward current EN=0, VOBK=21V -6 -15 mA TSHDN Thermal shut-down threshold 150 °C ΔT SHDN Thermal shut-down hysteresis 15 °C 1. External signal frequency range in which the EXTM function is guaranteed. 2. Frequency range in which the DETIN function is guaranteed. The VPP level is intended on the LNB bus (before the C12 capacitor. See Figure 4) Table 8. Electrical characteristics (continued) (Refer to the typical application circuit, TJ = 0 to 85 °C, EN=1, VSEL=LLC=TEN=PCL=ITEST=TTX=AUX=0, RSEL = 11 kΩ, DSQIN = LOW, VI = 12 V, IO = 50 mA, unless otherwise stated. Typical values are referred to TJ = 25 °C. VO = VoRX pin voltage. See software description section for I²C access to the system register) Table 9. I²C electrical characteristics (TJ from 0 to 85 °C, VI = 12 V) Symbol Parameter Test conditions Min. Typ. Max. Unit VIL LOW Level input voltage SDA, SCL 0.8 V VIH HIGH Level input voltage SDA, SCL 2 V II Input current SDA, SCL, VI = 0.4 to 4.5V -10 10 µA VOL Low level output voltage SDA (open drain), IOL = 6mA 0.6 V fMAX Maximum clock frequency SCL 400 kHz Table 10. Address pin characteristics (TJ from 0 to 85 °C, VI = 12 V) Symbol Parameter Test condition Min. Typ. Max. Unit VADDR-1 "0001010(R/W)" Address pin voltage range R/W bit determines the transmission mode: read (R/W=1) write (R/W=0) 00.8 V VADDR-2 "0001011(RW)" Address pin voltage range R/W bit determines the transmission mode: read (R/W=1) write (R/W=0) 25 V |
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