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AD5255 데이터시트(PDF) 3 Page - Analog Devices |
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AD5255 데이터시트(HTML) 3 Page - Analog Devices |
3 / 20 page AD5255 Rev. 0 | Page 3 of 20 ELECTRICAL CHARACTERISTICS Single supply: VDD = 2.7 V to 5.5 V and −40°C < TA < +85°C, unless otherwise noted. Dual supply: VDD = +2.25 V or +2.75 V, VSS = −2.25 V or −2.75 V and −40°C < TA < +85°C, unless otherwise noted. Table 1. Parameter Symbol Conditions Min Typ1 Max Unit DC CHARACTERISTICS, RHEOSTAT MODE Resistor Differential Nonlinearity2 R-DNL RWB, 7-bit channel −0.75 +0.75 LSB RWB, 9-bit channels −2.5 +2.5 LSB Resistor Integral Nonlinearity2 R-INL RWB, 7-bit channel −0.5 +0.5 LSB R-INL RWB, 9-bit channels, VDD = 5.5 V −2.0 +2.0 LSB R-INL RWB, 9-bit channels, VDD = 2.7 V −4.0 +4.0 LSB Resistance Temperature Coefficent (∆RWB/RWB)/∆T × 106 35 ppm/°C Wiper Resistance RW VDD = 5 V, IW = 1 V/RWB 100 150 Ω VDD = 3 V, IW = 1 V/RWB 250 400 Ω Channel Resistance Matching ∆RAB1/∆RAB2 Ch 1 and 2 RWB, Dx = 0x1FF 0.1 % Nominal Resistor Tolerance ∆RAB/RAB Dx = 0x3FF −15 +15 % DC CHARACTERISTICS, POTENTIOMETER DIVIDER MODE Differential Nonlinearity3 DNL 7-bit channel −0.5 +0.5 LSB DNL 9-bit channels −2.0 +2.0 LSB Integral Nonlinearity3 INL 7-bit channel −0.5 +0.5 LSB INL 9-bit channels −2.0 +2.0 LSB Voltage Divider Temperature Coefficent (∆VW/VW)/∆T × 106 Code = half-scale 15 ppm/°C Full-Scale Error VWFSE 7-bit channel/9-bit channel, code = full-scale −1/−2.75 0/0 LSB Zero-Scale Error VWZSE 7-bit channel/9-bit channel, code = zero-scale 0/0 1/2.0 LSB RESISTOR TERMINALS Terminal Voltage Range4 VA, B, W VSS VDD V Capacitance5 Ax, Bx CA,B f = 1 kHz, measured to GND, code = half-scale 85 pF Capacitance5 Wx CW f = 1 kHz, measured to GND, code = half-scale 95 pF Common-Mode Leakage Current 5, 8 ICM VW = VDD/2 0.01 1 µA DIGITAL INPUTS AND OUTPUTS Input Logic High VIH VDD = 5 V, VSS = 0 V 2.4 V VDD/VSS = +2.7 V/0 V or VDD/VSS = ±2.5 V 2.1 V Input Logic Low VIL VDD = 5 V, VSS = 0 V 0.8 V VDD/VSS = +2.7 V/0 V or VDD/VSS = ±2.5 V 0.6 V Output Logic High (SDA) VOH RPULL-UP = 2.2 kΩ to VDD = 5 V, VSS = 0 V 4.9 V Output Logic Low VOL RPULL-UP = 2.2 kΩ to VDD = 5 V, VSS = 0 V 0.4 V WP Leakage Current I WP WP = VDD 9 µA A0 Leakage Current IA0 A0 = GND 3 µA |
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