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TLV5638CDG4 Datasheet(PDF) 5 Page - Texas Instruments |
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TLV5638CDG4 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 24 page www.ti.com ELECTRICAL CHARACTERISTICS (Continued) TLV5638 SLAS225C – JUNE 1999 – REVISED JANUARY 2004 over recommended operating conditions, V ref = 2.048 V, Vref= 1.024 V (unless otherwise noted) STATIC DAC SPECIFICATIONS PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Resolution 12 bits C and I ±1.7 ±4 LSB suffixes Integral nonlinearity, end point ad- INL See (1) justed Q and M ±1.7 ±6 LSB suffixes DNL Differential nonlinearity See (2) ±0.4 ±1 LSB Zero-scale error (offset error at zero EZS See (3) ±24 mV scale) Zero-scale-error temperature coef- EZSTC See (4) 10 ppm/°C ficient % full EG Gain error See(5) ±0.6 scale V EGTC Gain error temperature coefficient See (6) 10 ppm/°C OUTPUT SPECIFICATIONS VO Output voltage RL= 10 kΩ 0 VDD-0.4 V % full Output load regulation accuracy VO = 4.096 V, 2.048 V, RL= 2 kΩ ±0.25 scale V REFERENCE PIN CONFIGURED AS OUTPUT (REF) Vref(OUTL) Low reference voltage 1.003 1.024 1.045 V Vref(OUTH) High reference voltage VDD > 4.75 V 2.027 2.048 2.069 V Iref(source) Output source current 1 mA Iref(sink) Output sink current -1 mA Load capacitance 100 pF PSRR Power supply rejection ratio -65 dB REFERENCE PIN CONFIGURED AS INPUT (REF) VI Input voltage 0 VDD-1.5 V RI Input resistance 10 M Ω CI Input capacitance 5 pF Fast 1.3 MHz Reference input bandwidth REF = 0.2 Vpp + 1.024 V dc Slow 525 kHz Reference feedthrough REF = 1 Vpp at 1.024 V dc(7) -80 dB DIGITAL INPUTS IIH HIgh-level digital input current VI = VDD 1 µA IIL Low-level digital input current VI = 0 V -1 µA Ci Input capacitance 8 pF (1) The relative accuracy or integral nonlinearity (INL) sometimes referred to as linearity error, is the maximum deviation of the output from the line between zero and full scale excluding the effects of zero code and full-scale errors. Tested from code 32 to 4095. (2) The differential nonlinearity (DNL) sometimes referred to as differential error, is the difference between the measured and ideal 1 LSB amplitude change of any two adjacent codes. Monotonic means the output voltage changes in the same direction (or remains constant) as a change in the digital input code. (3) Zero-scale error is the deviation from zero voltage output when the digital input code is zero. (4) Zero-scale-error temperature coefficient is given by: EZS TC = [EZS (Tmax) - EZS (Tmin)]/Vref× 106/(Tmax - Tmin). (5) Gain error is the deviation from the ideal output (2Vref - 1 LSB) with an output load of 10 kΩ excluding the effects of the zero-error. (6) Gain temperature coefficient is given by: EG TC = [EG(Tmax) - EG (Tmin)]/Vref× 106/(Tmax - Tmin). (7) Reference feedthrough is measured at the DAC output with an input code = 0x000. 5 |
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