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PGA450TPWRQ1 Datasheet(PDF) 6 Page - Texas Instruments |
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PGA450TPWRQ1 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 58 page PGA450-Q1 SLDS185A – APRIL 2012 – REVISED APRIL 2012 www.ti.com ELECTRICAL CHARACTERISTICS PARAMETER CONDITIONS MIN TYP MAX UNIT POWER SUPPLY VPWR voltage for POR to VPWRPOR POR is deasserted 3 4.2 V occur VAVDD AVDD pin voltage IAVDD = 5 mA 4.75 5 5.25 V IAVDD AVDD pin load current 5 mA VDVDD DVDD pin voltage 1.8 V VREF VREF pin voltage 3 V Power-up time – AVDD and VPWR = 7 V to 18 V, VREG is not in tPU 10 ms DVDD reach regulation levels. regulation VREG VPWR = 7V VREG_SEL = 0_XXX for 4.7 ±100 V–5.4 V Transducer primary voltage IREG = VREGTOL mV tolerance 100 µA VPWR = 10V VREG_SEL = 1_XXX for 7.7 ±150 V–8.4 V Transducer voltage droop while VREGCHARGE IREG = 100 mA, below VREG_SEL setting 500 charging mV VREGREADY VREG_READY threshold Below VREG_SEL setting 250 VPWR > VREG_SEL + 2.5 V 90 100 110 mA IVREG VREG output current VPWR > VREG_SEL + 2 V 100 µA VREG short-to-ground VREGI_S2G VPWR = 16 V, TA = 105 °C, no burst 110 mA protection current CLOCK FOSC Internal oscillator frequency 25°C 15.8 16 16.2 MHz FDUTY Internal oscillator duty cycle 50 % Before LIN sync –4 4 % Internal oscillator frequency accuracy LIN baud rate = 19.2 kBPS, after LIN sync –0.5 0.5 % LOW-SIDE DRIVE MOSFETs rds(on) FET ON resistance Iload = 500 mA, TA = 105 °C 1.2 Ω IPULSE Drain pulse current 50 kHz 1.5 A Drive clamping voltage Vgs = 0 V, Idd = 10 mA 40 V Leakage current 5 µA LOW NOISE AMPLIFIER LNA_GAIN setting = 0b00 1680 1750 1820 LNA_GAIN setting = 0b01 892 930 968 AV Gain V/V LNA_GAIN Setting = 0b10 496 517 538 LNA_GAIN Setting = 0b11 99 104 109 RIN Input impedance 40 kHz 100 k Ω Clamp voltage –1.5 1.5 V ILIM Input current limit 200 mA Noise (input-referred of the IN pin = GND, TA = 105 °C, center 0.7 µVrms signal chain) frequency = 40 kHz, Bandwidth = 10 kHz Input-referred PSRR VPWR = 7 V, LNA gain setting = 0b00 93 dB 12-bit A/D CONVERTER VADCREF Input voltage range 0 3 V Conversion time 1 µs DNL 20% to 80% input range 2.5 LSB INL 20% to 80% input range, best-fit curve 4 LSB Gain Best-fit curve 1373 1378 1383 LSB/V 6 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated Product Folder Link(s): PGA450-Q1 |
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