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AD5243BRMZ2.5-RL7 Datasheet(PDF) 3 Page - Analog Devices |
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AD5243BRMZ2.5-RL7 Datasheet(HTML) 3 Page - Analog Devices |
3 / 20 page Data Sheet AD5243/AD5248 Rev. B | Page 3 of 20 SPECIFICATIONS ELECTRICAL CHARACTERISTICS: 2.5 kΩ VERSION VDD = 5 V ± 10%, or 3 V ± 10%; VA = VDD; VB = 0 V; −40°C < TA < +125°C; unless otherwise noted. Table 1. Parameter Symbol Conditions Min Typ1 Max Unit DC CHARACTERISTICS—RHEOSTAT MODE Resistor Differential Nonlinearity2 R-DNL RWB, VA = no connect −2 ±0.1 +2 LSB Resistor Integral Nonlinearity2 R-INL RWB, VA = no connect −14 ±2 +14 LSB Nominal Resistor Tolerance3 ∆RAB TA = 25°C −20 +55 % Resistance Temperature Coefficient (∆RAB/RAB )/∆T VAB = VDD, wiper = no connect 35 ppm/°C Wiper Resistance RWB Code = 0x00, VDD = 5 V 160 200 Ω DC CHARACTERISTICS—POTENTIOMETER DIVIDER MODE4 Differential Nonlinearity5 DNL −1.5 ±0.1 +1.5 LSB Integral Nonlinearity5 INL −2 ±0.6 +2 LSB Voltage Divider Temperature Coefficient (∆VW/VW)/∆T Code = 0x80 15 ppm/°C Full-Scale Error VWFSE Code = 0xFF −14 −5.5 0 LSB Zero-Scale Error VWZSE Code = 0x00 0 4.5 12 LSB RESISTOR TERMINALS Voltage Range6 VA, VB, VW GND VDD V Capacitance A, B7 CA, CB f = 1 MHz, measured to GND, code = 0x80 45 pF Capacitance W7 CW f = 1 MHz, measured to GND, code = 0x80 60 pF Shutdown Supply Current8 IA_SD VDD = 5.5 V 0.01 1 µA Common-Mode Leakage ICM VA = VB = VDD/2 1 nA DIGITAL INPUTS AND OUTPUTS Input Logic High VIH VDD = 5 V 2.4 V Input Logic Low VIL VDD = 5 V 0.8 V Input Logic High VIH VDD = 3 V 2.1 V Input Logic Low VIL VDD = 3 V 0.6 V Input Current IIL VIN = 0 V or 5 V ±1 µA Input Capacitance7 CIL 5 pF POWER SUPPLIES Power Supply Range VDD RANGE 2.7 5.5 V Supply Current IDD VIH = 5 V or VIL = 0 V 3.5 6 µA Power Dissipation9 PDISS VIH = 5 V or VIL = 0 V, VDD = 5 V 30 µW Power Supply Sensitivity PSS VDD = 5 V ± 10%, code = midscale ±0.02 ±0.08 %/% DYNAMIC CHARACTERISTICS10 Bandwidth, −3 dB BW Code = 0x80 4.8 MHz Total Harmonic Distortion THDW VA = 1 V rms, VB = 0 V, f = 1 kHz 0.1 % VW Settling Time tS VA = 5 V, VB = 0 V, ±1 LSB error band 1 µs Resistor Noise Voltage Density eN_WB RWB = 1.25 kΩ, RS = 0 3.2 nV/√Hz 1 Typical specifications represent average readings at 25°C and VDD = 5 V. 2 Resistor position nonlinearity error, R-INL, is the deviation from an ideal value measured between the maximum resistance and the minimum resistance wiper positions. R-DNL measures the relative step change from the ideal between successive tap positions. Parts are guaranteed monotonic. 3 VA = VDD, VB = 0 V, wiper (VW) = no connect. 4 Specifications apply to all VRs. 5 INL and DNL are measured at VW with the RDAC configured as a potentiometer divider similar to a voltage output digital-to-analog converter (DAC). VA = VDD and VB = 0 V. DNL specification limits of ±1 LSB maximum are guaranteed monotonic operating conditions. 6 Resistor Terminal A, Resistor Terminal B, and Resistor Terminal W have no limitations on polarity with respect to each other. 7 Guaranteed by design, but not subject to production test. 8 Measured at the A terminal. The A terminal is open circuited in shutdown mode. 9 PDISS is calculated from (IDD × VDD). CMOS logic level inputs result in minimum power dissipation. 10 All dynamic characteristics use VDD = 5 V. |
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