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LTC2428I Datasheet(PDF) 3 Page - Linear Technology |
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LTC2428I Datasheet(HTML) 3 Page - Linear Technology |
3 / 28 page 3 LTC2424/LTC2428 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Input Voltage Range (Note 14) q – 0.125 • VREF 1.125 • VREF V VREF Reference Voltage Range q 0.1 VCC V CS(IN) Input Sampling Capacitance 1 pF CS(REF) Reference Sampling Capacitance 1.5 pF IIN(LEAK) Input Leakage Current CS = VCC q –100 1 100 nA IREF(LEAK) Reference Leakage Current VREF = 2.5V, CS = VCC q – 100 1 100 nA IIN(MUX) On Channel Leakage Current VS = 2.5V (Note 15) q ±20 nA RON MUX On-Resistance IOUT = 1mA, VCC = 2.7V q 250 300 Ω IOUT = 1mA, VCC = 5V q 120 250 Ω MUX ∆RON vs Temperature 0.5 %/ °C ∆RON vs VS (Note 15) 20 % IS(OFF) MUX Off Input Leakage Channel Off, VS = 2.5V q ±20 nA ID(OFF) MUX Off Output Leakage Channel Off, VD = 2.5V q ±20 nA tOPEN MUX Break-Before-Make Interval 290 ns tON Enable Turn-On Time VS = 1.5V, RL = 3.4k, CL = 15pF 490 ns tOFF Enable Turn-Off Time VS = 1.5V, RL = 3.4k, CL = 15pF 190 ns QIRR MUX Off Isolation VIN = 2VP-P, RL = 1k, f = 100kHz 70 dB QINJ Charge Injection RS = 0Ω, CL = 1000pF, VS = 1V ±1pC CS(OFF) Input Off Capacitance (MUX) 10 pF CD(OFF) Output Off Capacitance (MUX) 10 pF The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 3) A ALOG I PUT A D REFERE CE PARAMETER CONDITIONS MIN TYP MAX UNITS Total Unadjusted Error VREF = 2.5V 8 ppm of VREF VREF = 5V 16 ppm of VREF Output Noise VIN = 0V, VREF = 5V (Note 13) 6 µVRMS Output Noise (Fast Mode) VREF = 5V, 100 Samples/Second, fO = 2.048MHz 20 µVRMS Normal Mode Rejection 60Hz ±2% (Note 7) q 110 130 dB Normal Mode Rejection 50Hz ±2% (Note 8) q 110 130 dB Power Supply Rejection, DC VREF = 2.5V, VIN = 0V 100 dB Power Supply Rejection, 60Hz ±2% VREF = 2.5V, VIN = 0V, (Notes 7, 16) 110 dB Power Supply Rejection, 50Hz ±2% VREF = 2.5V, VIN = 0V, (Notes 8, 16) 110 dB The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Notes 3, 4) CONVERTER CHARACTERISTICS |
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