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UC2849DW Fiches technique(PDF) 4 Page - Texas Instruments |
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UC2849DW Fiches technique(HTML) 4 Page - Texas Instruments |
4 / 21 page www.ti.com UC2849 UC3849 SLUS360C – JULY 1995 – REVISED AUGUST 2007 ELECTRICAL CHARACTERISTICS (continued) Unless otherwise stated these specifications apply for TA = –40°C to 85°C for UC2849; and 0°C to 70°C for UC3849; VCC = 12 V, VEE = GND, Output no load, CT = 345 pF, RT = 4530Ω, RDEAD = 511Ω, RCLKSYN = 1 kΩ, TA = TJ. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 2X Amplifier and Share Amplifier V offset (b; y = mx + b) 20 mV GAIN (m; y = mx + b) Slope with AVOUT = 1 V and 2 V 1.98 2.02 V GBW(2) 100 kHz RSHARE VCC = 0, VSHARE/ISHARE 200 k Ω Negative supply is VEE, GND Open, Total offset –75 0 75 mV VAO = GND VOL VAO = voltage amplifier Vol, volts above VEE 0.05 0.45 0.6 IO = 0 mA, ILIM = 3 V, VAO = voltage amp VOH 5.7 6 6.3 V VOH IO = –1mA, ILIM = 3 V, VAO = voltage amp VOH 5.7 6 6.3 Adjust Amplifier VIO 40 60 80 mV gm IOUT= –10 μA to 10 μA, VOUT = 3.5 V, CADJ = 1 μF –1 mS IOUT = 0 0.9 1 1.1 VOL IOUT = 50 μA 0.85 1 1.15 V IOUT = 0 , VSHARE = 6.5 V 5.7 6 6.3 VOH IOUT = –50 μA, VSHARE = 6.5 V 5.7 6 6.3 Oscillator Frequency 450 500 550 kHz Max duty cycle 80% 85% 90% OSC range amplitude 2 2.5 2.8 V Clock Driver/SYNC (CLKSYN) VOL 0.02 0.2 3.6 V VOH RCLKSYN = 200 Ω 3.2 ISOURCE 25 mA RCLKSYN VCC = 0, VCLKSYN/ICLKSYN 10 k Ω VTH 1.5 V VREF Comparator Turn-on threshold 4.72 V Hysteresis 0.4 4 Submit Documentation Feedback |
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