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AD7376ARWZ100 Datasheet(PDF) 4 Page - Analog Devices

Part # AD7376ARWZ100
Description  128-Position Digital Potentiometer
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7376ARWZ100 Datasheet(HTML) 4 Page - Analog Devices

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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
VDD/VSS = ±5 V
260
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
Common-Mode Leakage
ICM
VA = VB = VW
1
nA


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