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AD5251BRUZ100 Arkusz danych(PDF) 5 Page - Analog Devices |
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AD5251BRUZ100 Arkusz danych(HTML) 5 Page - Analog Devices |
5 / 28 page Data Sheet AD5251/AD5252 Rev. D | Page 5 of 28 10 kΩ, 50 kΩ, 100 kΩ VERSIONS VDD = +3 V ± 10% or +5 V ± 10%, VSS = 0 V or VDD/VSS = ± 2.5 V ± 10%, VA = VDD, VB = 0 V, –40°C < TA < +105°C, unless otherwise noted. Table 2. Parameter Symbol Conditions Min Typ1 Max Unit DC CHARACTERISTICS— RHEOSTAT MODE Resolution N AD5251 6 Bits AD5252 8 Bits Resistor Differential Nonlinearity2 R-DNL R WB, RWA = NC, AD5251 −0.75 ±0.10 +0.75 LSB R WB, RWA = NC, AD5252 −1.00 ±0.25 +1.00 LSB Resistor Nonlinearity2 R-INL R WB, RWA = NC, AD5251 −0.75 ±0.25 +0.75 LSB R WB, RWA = NC, AD5252 −2.5 ±1.0 +2.5 LSB Nominal Resistor Tolerance ΔR AB/RAB T A = 25°C −20 +20 % Resistance Temperature Coefficient (ΔR AB/RAB) × 10 6/ΔT 650 ppm/°C Wiper Resistance R W I W = 1 V/R, VDD = 5 V 75 130 Ω I W = 1 V/R, VDD = 3 V 200 300 Ω Channel-Resistance Matching ΔR AB1/ΔRAB2 R AB = 10 kΩ, 50 kΩ 0.15 % R AB = 100 kΩ 0.05 % DC CHARACTERISTICS— POTENTIOMETER DIVIDER MODE Differential Nonlinearity3 DNL AD5251 −0.5 ±0.1 +0.5 LSB AD5252 −1.0 ±0.3 +1.0 LSB Integral Nonlinearity3 INL AD5251 −0.50 ±0.15 +0.50 LSB AD5252 −1.5 ±0.5 +1.5 LSB Voltage Divider Temperature Coefficient (ΔV W/VW) × 10 6/ΔT Code = half scale 15 ppm/°C Full-Scale Error V WFSE Code = full scale, AD5251 −1.0 −0.3 0 LSB Code = full scale, AD5252 −3 −1 0 LSB Zero-Scale Error V WZSE Code = zero scale, AD5251 0 0.3 1.0 LSB Code = zero scale, AD5252 0 1.2 3.0 LSB RESISTOR TERMINALS Voltage Range4 V A, VB, VW V SS V DD V Capacitance5 A, B C A, CB f = 1 kHz, measured to GND, code = half scale 85 pF Capacitance5 W C W f = 1 kHz, measured to GND, code = half scale 95 pF Common-Mode Leakage Current I CM V A = VB = VDD/2 0.01 1.00 µA DIGITAL INPUTS AND OUTPUTS Input Logic High V IH V DD = 5 V, VSS = 0 V 2.4 V V DD/VSS = +2.7 V/0 V or VDD/VSS = ±2.5 V 2.1 V Input Logic Low V IL V DD = 5 V, VSS = 0 V 0.8 V V DD/VSS = +2.7 V/0 V or VDD/VSS = ±2.5 V 0.6 V Output Logic High (SDA) V OH R PULL-UP = 2.2 kΩ to VDD = 5 V, VSS = 0 V 4.9 V Output Logic Low (SDA) V OL R PULL-UP = 2.2 kΩ to VDD = 5 V, VSS = 0 V 0.4 V WP Leakage Current I WP WP = VDD 8 µA A0 Leakage Current I A0 A0 = GND 3 µA Input Leakage Current (Other than WP and A0) I I V IN = 0 V or VDD ±1 µA Input Capacitance5 C I 5 pF |
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