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MX641 数据表(PDF) 6 Page - CML Microcircuits |
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MX641 数据表(HTML) 6 Page - CML Microcircuits |
6 / 17 page Dual SPM Detector Page 6 of 16 MX641 Preliminary Information ã ã ã ã2001 MX-COM, Inc. www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 Doc. # 20480115.004 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. 3. External Components XTAL XTAL/CLOCK XTAL/CLOCK If you use a Clock Pulse input: - Remove Xtal (X ) - Connect Pin 1 to V - Do not short Pins 3 & 4 - Input clock pulses to CLOCK IN See Figure 3 1 DD CLOCK IN IN OUT CLOCK CH2 OUTPUT CH1 OUTPUT CH1 AMP IN (+) VDD C1 X1 R3 R1 R2 R4 R8 R6 C6 C5 R5 C3 C4 C2 R7 MX641 1 2 3 11 12 24 23 22 21 20 19 18 17 16 15 14 13 4 5 6 7 8 9 10 OUTPUT ENABLE CH1 AMP OUT CH1 AMP IN (-) CH2 AMP OUT OUTPUT SELECT PRESET LEVEL SERIAL CLOCK SERIAL DATA SYSTEM SELECT CH2 AMP IN (-) CH2 AMP IN (+) CHIP SELECT VBIAS VDD VSS VDD Figure 2: Recommended External Components R1 68k Ω ± 1% C1 1.0µF ±20% R2 68k Ω ±1% C2 1.0µF ±20% R3 Note 1 750k Ω ±1% C3 270pF ±5% R4 Note 1 750k Ω ±1% C4 270pF ±5% R5 68k Ω ± 1% C5 270pF ±5% R6 68k Ω ± 1% C6 270pF ±5% R7 Note 1 750k Ω ±1% R8 Note 1 750k Ω ±1% X1 Note 2, 3 3.579545MHz Table 2: Recommended External Components Note: 1. Fixed Sensitivity Setting: when calculating/selecting gain components, R3, R4, R7 and R8 should always be greater than or equal to 100k Ω. 2. For best results, a crystal oscillator design should drive the clock inverter input with signal levels of at least 40% of VDD, peak to peak. Tuning fork crystals generally cannot meet this requirement. To obtain crystal oscillator design assistance, consult your crystal manufacturer. 3. The on-chip crystal circuitry includes a feedback resistor (nominally 2M Ω) between pins 1 & 2 and load capacitors on pins 1 & 2 (nominally 10pF each, excluding package and board parasitics). |
类似零件编号 - MX641 |
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类似说明 - MX641 |
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