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MC145146DW2 bảng dữ liệu(PDF) 11 Page - LANSDALE Semiconductor Inc. |
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MC145146DW2 bảng dữ liệu(HTML) 11 Page - LANSDALE Semiconductor Inc. |
11 / 12 page LANSDALE Semiconductor, Inc. ML145146 www.lansdale.com Page 11 of 12 Issue 0 CHOICE OF REF. OSC. FREQUENCY (ON–CHIP OSC. OPTIONAL) CHOICE OF REF. OSC. FREQUENCY (ON–CHIP OSC. OPTIONAL) } } } } FOR USE WITH EXTERNAL PHASE DETECTOR (OPTIONAL) FOR USE WITH EXTERNAL PHASE DETECTOR (OPTIONAL) LOCK DETECT SIGNAL LOCK DETECT SIGNAL RECEIVER LO. 443.325 443.950 MHz (25 kHz STEPS) 8 OSCout MOD CONTROL PDout fR fin D3 D2 D1 D0 A2 A1 A0 ST φR φV fV LD OSCin VDD VSS 7 5 3 17 16 14 6 4 7 8 6 4 19 20 1 2 11 10 9 12 18 15 13 ML145146 MOD CONTROL PDout fR fin D3 D2 D1 D0 A2 A1 A0 ST φR φV fV LD OSCin VDD VSS ML145146 LOOP FILTER VCO TRANSMITTER MODULATION AND 15.7 MHz OFFSET CHOICE OF DETECTOR ERROR SIGNALS ML12034 PRESCALER TRANSMITTER SIGNAL 459.025 – 459.650 MHz (25 kHz STEPS) CHIP SELECT TO CONTROLLER TO SHARED CONTROLLER BUS 19 20 1 2 11 10 9 12 3 14 16 17 5 CHIP SELECT TO CONTROLLER TO SHARED CONTROLLER BUS NOTES: 1. Reciever I.F = 10.7 MHz, low side injection. 2. Duplex operation with 5 MHz receive/transmit separation. 3. fR = 25 kHz, + R chosen to correspond with desired reference oscillator frequency. 4. Ntotal = 17,733 to 17,758 = N • P + A; N = 227, A = 5 to 30 for P = 64. Figure 13. Synthesizer for UHF Mobil Radio Telephone Channels Demonstrates Use of the ML145146 in Microprocessor/Microcomputer Controlled Systems Operating to Several Hundred MHz NOTES: 1. Receiver 1st I.F. = 45 MHz, low side injection; Receiver 2nd I.F. = 11.7 MHz, low side injection. 2. Duplex operation with 45 MHz receive/transmit separation. 5. Only one implementation is shown. Various other configurations and dual–modulus prescaling values to ÷128/÷129 are possible. 3. fR = 7.5 kHz, + R = 1480. 4. Ntotal = N • 32 + A = 27,501 to 28,166: N = 859 to 880; A = 0 to 31. Figure 14. 666 Channel, Computer Controlled, Mobile Radio Telephone Synthesizer for 800 MHz Cellular Radio Systems OSCout X3 RECEIVER 2ND, L.O. 33,300 MHZ RECEIVER FIRST L.O. 825.030 844.980 MHZ (30 KHz STEPS) LOOP FILTER VCO X4 X4 TRANSMITTER MODULATION TRANSMITTER SIGNAL 825.030 844.880 MHz (30 kHz STEPS) CHOICE OF DETECTOR ERROR SIGNALS MC10131 DUAL F/F ML12011 ÷8/÷9 PRESCALER +32/+32 DUAL MODULUS PRESCALER |
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