U2745B-MFBG3 Atmel, U2745B-MFBG3 Datasheet
U2745B-MFBG3
Specifications of U2745B-MFBG3
Related parts for U2745B-MFBG3
U2745B-MFBG3 Summary of contents
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... Electrostatic sensitive device. Observe precautions for handling. Description The U2745B is a PLL transmitter IC which has been especially developed for the demands of RF low-cost data transmission systems at data rates kBaud. The transmitting frequency range is 310 MHz to 440 MHz. It can be used in ASK sys- tems ...
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... PLL Antenna Antenna XTO VCO Power amp. ASK OR EN Power up VCC VCO CLK f GND 64 LFVCC f n LFGND LF U2745B UHF ASK Remote control receiver U3745BM Demod. Control IF Amp PLL XTO LNA VCO GND PWRSET PWRVCC PA ANT PWRGND1 PWRGND2 XTO XTO1 NC 1...3 4734A–RKE–11/03 ...
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... Connection for crystal 11 PWRGND2 Power GND2 12 PWRGND1 Power GND1 13 ANT RF output 14 PWRVCC Supply voltage power amplifier 15 PWRSET Applied to VCC 16 GND Ground 4734A–RKE–11/03 ASK VCC 3 14 CLK 4 13 U2745B 5 GND 12 LFVCC 6 11 LFGND GND PWRSET PWRVCC ANT PWRGND1 PWRGND2 XTO1 NC U2745B 3 ...
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... The clock of the crystal oscillator can be used for clocking the microcontroller. The ATAR090 and ATAR890 have the special feature of starting with an integrated RC oscil- lator to switch on the U2745B with V present, so that the message can be sent with crystal accuracy. The following component values are recommendations for a typical application. C and C are block capacitors ...
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... MHz 4734A–RKE–11/03 Figure 4. Measurement Output Network PWRVCC ANT ASK Power VCC up 3 CLK VCO PA 4 GND LFVCC 6 f XTO LFGND U2745B U2745B Load-opt 2.2 ... 4 GND 16 PWRSET C Loop2 15 R PWRSET PWRVCC ANT Feed PWRGND1 Loop1 12 PWRGND2 11 13.56 MHz XTO1 ...
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... Supply current (power up, output ON) V Output power Output power variation for f = 315 MHz compared 433.92 MHz Maximum peak output antenna voltage Spurious emission Oscillator frequency XTO Loop bandwidth Phase noise PLL Phase noise VCO U2745B ° C, unless otherwise specified = amb = 2 4 Test Conditions £ 0 < ...
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... Clk f /128 out out C 10 CLK 100 modASK I 150 ol I 200 ol I -150 oh I -200 100 oh V 0.3 ASKl V 1.7 ASKh I 140 ASKh 0.3 FSKl V 1.7 FSKh I 140 FSKh U2745B Unit MHz MHz pF W kHz µA µA µA µ µ µA 7 ...
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... Ordering Information Extended Type Number U2745B-MFB U2745B-MFBG3 Package Information U2745B 8 Package Remarks SSO16 Tube SSO16 Taped and reeled 4734A–RKE–11/03 ...
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... No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life support devices or systems. ...