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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA5345HT датащи(PDF) 36 Page - NXP Semiconductors |
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TDA5345HT датащи(HTML) 36 Page - NXP Semiconductors |
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36 / 44 page  1999 June 10 36 Philips Semiconductors Preliminary specification 5 V spindle & VCM driver combo TDA5345HT 3. Spindle circuits 3-1 Spindle driver: (assuming that Resistor @ pin RefCurRes is exactly 33 k Ω) 3-2 Spindle current loop (assuming that Resistor @ pin RefCurRes is exactly 33 k Ω) 3-3 Spindle Fll Charge Pump (assuming that Resistor @ pin RefCurRes is exactly 33 k Ω) tHD clock to data hold time GbD 2 ns tFINISH last active clock to chip select inactive on write GbD TSCLK/2 ns tWAIT time between successive serial port accesses GbD 5 CLOCK cycles SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT. RDSon total FET resistance ISPIN = 620 mA 1.5 Ω IStartMax maximum start-up current DAC6[5,0] = “011111” 620 mA IStartStep start-up current step 20 mA IStartRes start-up current resolution 5 5 bits IRUN running current continuous 300 mA SR1 fly-backs slew rate control FlyBackSlope[0,1] = “00” 19 26.5 34 mV/ µs SR2 fly-backs slew rate control FlyBackSlope[0,1] = “01” 48 59 70 mV/ µs SR3 fly-backs slew rate control FlyBackSlope[0,1] = “10” 105 124 143 mV/ µs SR4 fly-backs slew rate control FlyBackSlope[01] = “11” 222 256 290 mV/ µs ACCR_FB relative accuracy on the 6 fly-backs slew-rate -20 +20 % Vfbmax max voltage on spinmotx positive fly-back, I <100 mA Vdd5+ 0.05 Vdd5+ 0.2 Vdd5+ 0.35 V Vfbmin min voltage on spinmotx neg. fly-back, I <100 mA -0.35 V -0.2 V -0.05 V V IBP brake power leakage PorN = “0”, GbD 5 250 nA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT ACCStCur spindle start-up current accuracy IStUp > 400 mA -6 +6 % ACCRStCur current relative accuracy between each phase IStUp > 400 mA -5 + 5 % gmOTA OTA transconductance GbD 35 50 65 µA/V SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Ich/disch charge/discharge current 465 500 535 µA SYMCur charge/discharge currents symetry 0.98 1.02 tr/f rise/Fall time GbD 1 2 ns SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT. |
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