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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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41594B 데이터시트(PDF) 329 Page - Microchip Technology |
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41594B 데이터시트(HTML) 329 Page - Microchip Technology |
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329 / 372 page  2011-2012 Microchip Technology Inc. Preliminary DS41594B-page 329 PIC12LF1840T48A 31.6 Thermal Considerations Standard Operating Conditions (unless otherwise stated) Operating temperature -40°C TA +125°C Param No. Sym. Characteristic Typ. Units Conditions TH01 JA Thermal Resistance Junction to Ambient TBD C/W 14-pin TSSOP 4x4mm package TH02 JC Thermal Resistance Junction to Case TBD C/W 14-pin TSSOP 4x4mm package TH03 TJMAX Maximum Junction Temperature 150 C TH04 PD Power Dissipation — W PD = PINTERNAL + PI/O TH05 PINTERNAL Internal Power Dissipation — W PINTERNAL = IDD x VDD(1) TH06 PI/O I/O Power Dissipation — W PI/O = (IOL * VOL) + (IOH * (VDD - VOH)) TH07 PDER Derated Power — W PDER = PDMAX (TJ - TA)/ JA(2) Legend: TBD = To Be Determined Note 1: IDD is current to run the chip alone without driving any load on the output pins. 2: TA = Ambient Temperature. 3: TJ = Junction Temperature. 31.7 RF Transmitter Electrical Specifications Symbol Description Conditions Min Typ Max Unit Current Consumption IDDSL Supply current in Sleep mode — — 0.5 1 µs IDDT Supply current in Transmit mode with appropriate exter- nal matching RF Power o/p = +10 dBm — 16.5 — mA RF Power o/p = 0 dBm — 9 — mA RF and Baseband Specifications FDA_D Frequency deviation, FSK Number of programma- ble values — 8 —— FDA Frequency deviation, FSK* — 10 — 100 kHz BRF Bit rate, FSK Permissible Range 0.5 — 100 kbps BRO Bit rate, OOK Permissible Range 0.5 — 10 kbps OOK_B OOK Modulation Depth —— 50 — dB RFOP RF output power in 50 ohms High Power Setting 7 10 — dBm Low Power Setting** -3 0 — dBm DRFOPV Variation in RF output power with supply voltage 2.5V to 3.3V —— 3dB 1.8V to 3.7V —— 7dB PHN Transmitter phase noise at 868.3 MHz Offset from center fre- quency: 100 kHz —— -76 dBc/Hz 350 kHz —— -81 dBc/Hz 550 kHz —— -91 dBc/Hz 1.15 MHz —— -101 dBc/Hz FR Number of selectable fre- quencies —— 8 —— FXOSC Crystal Oscillator Frequency — 26 26 26 MHz STEP RF Frequency Step 868 MHz — 3.174 — kHz 434 MHz — 1.587 — kHz DFXOSC Frequency variation of the Oscillator Circuit No crystal contribution —— +/-25 ppm |
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