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AD5247 데이터시트(PDF) 3 Page - Analog Devices

부품명 AD5247
상세설명  128-Position I2C Compatible Digital Potentiometer
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제조업체  AD [Analog Devices]
홈페이지  http://www.analog.com
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AD5247
ELECTRICAL CHARACTERISTICS—5 kΩ VERSION
Table 1. VDD = 5 V ±10% or 3 V ± 10%; VA = +VDD; –40°C < TA < +125°C; unless otherwise noted
Parameter
Symbol
Conditions
Min
Typ1
Max
Unit
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity2
R-DNL
RWB, VA = No Connect
–1.5
±0.1
+1.5
LSB
Resistor Integral Nonlinearity2
R-INL
RWB, VA = No Connect
–4
±0.75
+4
LSB
Nominal Resistor Tolerance3
∆RAB
–30
+30
%
Resistance Temperature Coefficient
∆RAB/∆T
VA = VDD, Wiper = No Connect
45
ppm/°C
RWB
RWB
Code = 0x00
75
300
DC CHARACTERISTICS—POTENTIOMETER DIVIDER MODE
Differential Nonlinearity4
DNL
–1
±0.1
+1
LSB
Integral Nonlinearity4
INL
–1
±0.2
+1
LSB
Voltage Divider Temperature Coefficient
∆VW/∆T
Code = 0x40
15
ppm/°C
Full-Scale Error
VWFSE
Code = 0x7F
–3
–2
0
LSB
Zero-Scale Error
VWZSE
Code = 0x00
0
+1
+2
LSB
RESISTOR TERMINALS
Voltage Range5
VB, W
GND
VDD
V
Capacitance6 A
CA
f = 1 MHz, Measured to GND,
Code = 0x40
45
pF
Capacitance6 W
CW
f = 1 MHz, Measured to GND,
Code = 0x40
60
pF
Common-Mode Leakage
ICM
VA = 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 Capacitance6
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
8
µA
Power Dissipation7
PDISS
VIH = 5 V or VIL = 0 V, VDD = 5 V
40
µW
Power Supply Sensitivity
PSSR
VDD = +5 V ± 10%,
Code = Midscale
±0.003
±0.05
%/%
DYNAMIC CHARACTERISTICS6, 8
Bandwidth –3 dB
BW_5K
RAB = 5 kΩ, Code = 0x40
1.2
MHz
Total Harmonic Distortion
THDW
VA = 1 V rms, VB = 0 V,
f = 1 kHz
0.05
%
VW Settling Time
tS
VA = 5 V, ±1 LSB Error Band
1
µs
Resistor Noise Voltage Density
eN_WB
RWB = 2.5 kΩ, RS = 0 Ω
6
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 ideal between successive tap positions. Parts are guaranteed monotonic.
3 VA = VDD, Wiper (VW) = no connect.
4 INL and DNL are measured at VW with the RDAC configured as a potentiometer divider similar to a voltage output D/A converter. VA = VDD and VB = 0 V.
DNL specification limits of ±1 LSB maximum are guaranteed monotonic operating conditions.
5 Resistor terminals A and W have no limitations on polarity with respect to each other.
6 Guaranteed by design and not subject to production test.
7 PDISS is calculated from (IDD × VDD). CMOS logic level inputs result in minimum power dissipation.
8 All dynamic characteristics use VDD = 5 V.
Rev. 0 | Page 3 of 20


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