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AD7376ARWZ50 Datasheet(PDF) 4 Page - Analog Devices |
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AD7376ARWZ50 Datasheet(HTML) 4 Page - Analog Devices |
4 / 20 page AD7376 Rev. D | Page 4 of 20 Parameter Symbol Conditions Min Typ1 Max Unit DYNAMIC CHARACTERISTICS6, 9,10 Bandwidth −3 dB BW Code = 0x40 470 kHz Total Harmonic Distortion THDW VA = 1 V rms, VB = 0 V, f = 1 kHz 0.006 % VW Settling Time tS VA = 10 V, VB = 0 V, ±1 LSB error band 4 µs Resistor Noise Voltage eN_WB RWB = 5 kΩ, f = 1 kHz 0.9 nV√Hz 1 Typical values represent average readings at 25°C, VDD = 15 V, and VSS = −15 V. 2 Resistor position nonlinearity error R-INL is the deviation from an ideal value measured between the maximum and minimum resistance wiper positions. R-DNL measures the relative step change from an ideal value measured between successive tap positions. Parts are guaranteed monotonic. 3 Pb-free parts have a 35 ppm/°C temperature coefficient (tempco). 4 INL and DNL are measured at VW with the RDAC configured as a potentiometer divider, similar to a voltage output digital-to-analog converter. VA = VDD and VB = 0 V. DNL specification limits of ±1 LSB maximum are guaranteed monotonic operating conditions. 5 Resistor Terminals A, B, and W have no limitations on polarity with respect to each other. 6 Guaranteed by design and not subject to production test. 7 Measured at the A terminal. A terminal is open circuit in shutdown mode. 8 PDISS is calculated from (IDD × VDD) + abs(ISS × VSS). CMOS logic level inputs result in minimum power dissipation. 9 Bandwidth, noise, and settling times are dependent on the terminal resistance value chosen. The lowest R value results in the fastest settling time and highest bandwidth. The highest R value results in the minimum overall power consumption. 10 All dynamic characteristics use VDD = 15 V and VSS = −15 V. ELECTRICAL CHARACTERISTICS—50 kΩ, 100 kΩ VERSIONS VDD/VSS = ±15 V ± 10% or ±5 V ± 10%, VA = VDD, VB = VSS/0 V, −40°C < TA < +85°C, unless otherwise noted. Table 2. Parameter Symbol Conditions Min Typ1 Max Unit DC CHARACTERISTICS—RHEOSTAT MODE Resistor Differential Nonlinearity2 R-DNL RWB, VA = NC −1 ±0.5 +1 LSB Resistor Nonlinearity2 R-INL RWB, VA = NC, RAB = 50 kΩ −1.5 ±0.5 +1.5 LSB RWB, VA = NC, RAB = 100 kΩ −1 ±0.5 +1 LSB Nominal Resistor Tolerance ∆RAB TA = 25°C −30 +30 % Resistance Temperature Coefficient3 (∆RAB/RAB)/∆T × 106 VAB = VDD, wiper = no connect −300 ppm/°C Wiper Resistance RW VDD/VSS = ±15 V 120 200 Ω VDD/VSS = ±5 V 260 Ω DC CHARACTERISTICS— POTENTIOMETER DIVIDER MODE Integral Nonlinearity4 INL −1 ±0.5 +1 LSB Differential Nonlinearity4 DNL −1 ±0.5 +1 LSB Voltage Divider Temperature Coefficient (∆VW/VW)/∆T × 106 Code = 0x40 5 ppm/°C Full-Scale Error VWFSE Code = 0x7F −2 −0.5 0 LSB Zero-Scale Error VWZSE Code = 0x00 0 0.5 1 LSB RESISTOR TERMINALS Voltage Range5 VA, B,W VSS VDD V Capacitance6 A, B CA, B f = 1 MHz, measured to GND, code = 0x40 45 pF Capacitance6 CW f = 1 MHz, measured to GND, code = 0x40 60 pF Shutdown Supply Current7 IA_SD VA = VDD, VB = 0 V, SHDN = 0 0.02 1 µA Shutdown Wiper Resistance RW_SD VA = VDD, VB = 0 V, SHDN = 0, VDD = 15 V 170 400 Ω Common-Mode Leakage ICM VA = VB = VW 1 nA |
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