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AD5121 Fiches technique(PDF) 8 Page - Analog Devices

No de pièce AD5121
Description  Quad Channel, 128-/256-Position, I2C Nonvolatile Digital Potentiometer
Download  28 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD5121 Fiches technique(HTML) 8 Page - Analog Devices

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AD5123/AD5143
Data Sheet
Rev. A | Page 8 of 28
Parameter
Symbol
Test Conditions/Comments
Min
Typ1
Max
Unit
DYNAMIC CHARACTERISTICS9
Bandwidth
BW
−3 dB
RAB = 10 kΩ
3
MHz
RAB = 100 kΩ
0.43
MHz
Total Harmonic Distortion
THD
VDD/VSS = ±2.5 V, VA = 1 V rms,
VB = 0 V, f = 1 kHz
RAB = 10 kΩ
−80
dB
RAB = 100 kΩ
−90
dB
Resistor Noise Density
eN_WB
Code = half scale, TA = 25°C,
f = 10 kHz
RAB = 10 kΩ
7
nV/√Hz
RAB = 100 kΩ
20
nV/√Hz
VW Settling Time
tS
VA = 5 V, VB = 0 V, from
zero scale to full scale,
±0.5 LSB error band
RAB = 10 kΩ
2
µs
RAB = 100 kΩ
12
µs
Crosstalk (CW1/CW2)
CT
RAB = 10 kΩ
10
nV-sec
RAB = 100 kΩ
25
nV-sec
Analog Crosstalk
CTA
−90
dB
Endurance10
TA = 25°C
1
Mcycles
100
kcycles
Data Retention11
50
Years
1
Typical values represent average readings at 25°C, VDD = 5 V, and VSS = 0 V.
2
Resistor integral nonlinearity (R-INL) error 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. The maximum wiper current is limited to (0.7 × VDD)/RAB.
3
Guaranteed by design and characterization, not subject to production test.
4
INL and DNL are measured at VWB with the RDAC configured as a potentiometer divider similar to a voltage output DAC. VA = VDD and VB = 0 V. DNL specification limits
of ±1 LSB maximum are guaranteed monotonic operating conditions.
5
Resistor Terminal A, Resistor Terminal B, and Resistor Terminal W have no limitations on polarity with respect to each other. Dual-supply operation enables ground
referenced bipolar signal adjustment.
6
Different from operating current; supply current for EEPROM program lasts approximately 30 ms.
7
Different from operating current; supply current for EEPROM read lasts approximately 20 µs.
8
PDISS is calculated from (IDD × VDD).
9
All dynamic characteristics use VDD/VSS = ±2.5 V.
10
Endurance is qualified to 100,000 cycles per JEDEC Standard 22, Method A117 and measured at −40°C to +125°C.
11
Retention lifetime equivalent at junction temperature (TJ) = 125°C per JEDEC Standard 22, Method A117. Retention lifetime, based on an activation energy of 1 eV,
derates with junction temperature in the Flash/EE memory.


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