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DRV401AMDWPREP Datasheet(PDF) 4 Page - Texas Instruments |
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DRV401AMDWPREP Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 33 page  DRV401-EP SBVS104 – JANUARY 2008............................................................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS (continued) Boldface limits apply over the specified temperature range: TJ = –55°C to +125°C. At TA = +25°C and VDD1 = VDD2 = +5 V with external 100 kHz filter BW, and zero output current ICOMP, unless otherwise noted. DRV401 PARAMETER CONDITIONS UNITS MIN TYP MAX FREQUENCY RESPONSE BW–3dB Bandwidth(5) 2 MHz SR Slew rate(5) CMVR = –1 V to = +4 V 6.5 V/ µs dV ± 2 V to 1%, Settling time, large-signal(5) 0.9 µs No external filter Settling time(5) dV ± 0.4 V to 0.01% 14 µs INPUT RESISTANCE Differential 16.5 20 23.5 k Ω Common-mode 41 50 59 k Ω External reference input 41 50 59 k Ω NOISE Output voltage noise density, f = 1 kHz, en Compensation loop disabled 170 nV/ √Hz RTO(5) COMPENSATION LOOP Probe f = 250 kHz, DC STABILITY RLOAD = 20 Ω Deviation from 50% PWM, Offset error(6) 0.03 % Pin gain = L Deviation from 50% PWM, Offset error drift(5) 7.5 ppm/°C Pin gain = L Gain, pin gain = L(5) |VICOMP1| – |VICOMP2| –200 25 200 ppm/V PSRR Power-supply rejection ratio Probe loop f = 250 kHz 500 ppm/V FREQUENCY RESPONSE Open-loop gain, two modes, 7.8 kHz Pin gain H/L 24/32 dB PROBE COIL LOOP Input voltage clamp range Field probe current < 50 mA –0.7 –0.7 to VDD V Internal resistor, IS1 or IS2 to VDD1 (5) 47 59 71 Ω RHIGH Internal resistor, IS1 or IS2 to GND1(5) 60 75 90 Ω Resistance mismatch between IS1 and RLOW ppm of RHIGH + RLOW 300 1500 ppm IS2(5) Total input resistance(7) 134 200 Ω Comparator threshold current(7) 22 28 34 mA Minimum probe loop half-cycle(5) 250 280 310 ns Probe loop minimum frequency 250 kHz No oscillation detect (error) suppression 35 µs COMPENSATION COIL DRIVER, H-BRIDGE Peak current(5) VICOMP1 – VICOMP2 = 4.0VPP 250 mA Voltage swing 20 Ω load 4.2 VPP Output common-mode voltage VDD2/2 V Wire break detect, threshold current(8) ICOMP1 and ICOMP2 railed 33 57 mA VOLTAGE REFERENCE Voltage(5) No load 2.495 2.5 2.505 V Drift(5) No load ±5 ppm/°C (5) See Typical Characteristics curves. (6) For VAC sensors, 0.2% of PWM offset approximately corresponds to 10 mA primary current offset per winding. (7) Total input resistance and comparator threshold current are inversely related. See Figure 2a. (8) See Compensation Driver section in Applications Information. 4 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): DRV401-EP |
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