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MC145152P2 bảng dữ liệu(PDF) 10 Page - Freescale Semiconductor, Inc |
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MC145152P2 bảng dữ liệu(HTML) 10 Page - Freescale Semiconductor, Inc |
10 / 24 page MC145151-2 and MC145152-2 Technical Data, Rev. 5 10 Freescale Semiconductor MC145152-2 Parallel-Input (Interfaces with Dual-Modulus Prescalers) divide values respectively for high and low MC levels, N the number programmed into the ÷ N counter, and A the number programmed into the ÷ A counter. LD Lock Detector Output (Pin 28) Essentially a high level when loop is locked (fR, fV of same phase and frequency). Pulses low when loop is out of lock. 2.2.3 Power Supply VDD Positive Power Supply (Pin 3) The positive power supply potential. This pin may range from + 3 to + 9 V with respect to VSS. VSS Negative Power Supply (Pin 2) The most negative supply potential. This pin is usually ground. 2.3 Typical Applications Figure 7. Synthesizer for Land Mobile Radio VHF Bands NOTES: 1. Off-chip oscillator optional. 2. The φ R and φV outputs are fed to an external combiner/loop filter. See the Phase-Locked Loop - Low-Pass Filter Design page for additional information. The φ R and φV outputs swing rail-to-rail. Therefore, the user should be careful not to exceed the com- mon mode input range of the op amp used in the combiner/loop filter. LOCK DETECT SIGNAL 10.24 MHz NOTE 1 R1 NOTE 2 + 150 - 175 MHz 5 kHz STEPS ÷ 64/65 PRESCALER MC145152-2 MC LD A0 A5 N9 OSCin VDD VSS OSCout RA2 RA1 φ R φ V fin - VCO RA0 N0 + V R1 R2 C R2 C “1" “1" “1" NO CONNECTS CHANNEL PROGRAMMING |
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Mô tả tương tự - MC145152P2 |
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