AD5272 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD5272 Datasheet PDF : 28 Pages
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AD5272/AD5274
Data Sheet
Parameter
Power Supply Rejection Ratio5
DYNAMIC CHARACTERISTICS5, 11
Bandwidth
Total Harmonic Distortion
Resistor Noise Density
Symbol Test Conditions/Comments
Min
PSRR
ΔVDD/ΔVSS = ±5 V ± 10%
RAW = 20 kΩ
RAW = 50 kΩ
RAW = 100 kΩ
−3 dB, RAW = 10 kΩ, Terminal W, see Figure 41
RAW = 20 kΩ
RAW = 50 kΩ
RAW = 100 kΩ
VA = 1 V rms, f = 1 kHz, code = half scale
RAW = 20 kΩ
RAW = 50 kΩ
RAW = 100 kΩ
Code = half scale, TA = 25°C, f = 10 kHz
RAW = 20 kΩ
RAW = 50 kΩ
RAW = 100 kΩ
Typ1 Max Unit
dB
−66 −55
−75 −67
−78 −70
kHz
300
120
60
dB
−90
−88
−85
nV/√Hz
13
25
32
1 Typical specifications represent average readings at 25°C, VDD = 5 V, and VSS = 0 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.
3 The maximum current in each code is defined by IAW = (VDD − 1)/RAW.
4 The terms, resistor performance mode and R-Perf mode, are used interchangeably. See the Resistor Performance Mode section.
5 Guaranteed by design and not subject to production test.
6 See Figure 24 for more details.
7 Resistor Terminal A and Resistor Terminal W have no limitations on polarity with respect to each other. Dual-supply operation enables ground referenced bipolar
signal adjustment.
8 Different from operating current, the supply current for the fuse program lasts approximately 55 ms.
9 Different from operating current, the supply current for the fuse read lasts approximately 500 ns.
10 PDISS is calculated from (IDD × VDD) + (ISS × VSS).
11 All dynamic characteristics use VDD = +2.5 V, VSS = −2.5 V.
Table 2. AD5272 Resistor Performance Mode Code Range
Resistor Tolerance Per Code
|VDD − VSS| = 4.5 V to 5.5 V
R-TOLERANCE
1% R-Tolerance
From 0x078 to 0x3FF
2% R-Tolerance
From 0x037 to 0x3FF
3% R-Tolerance
From 0x028 to 0x3FF
|VDD − VSS| = 2.7 V to 4.5 V
From 0x0BE to 0x3FF
From 0x055 to 0x3FF
From 0x037 to 0x3FF
Table 3. AD5272 50 kΩ and 100 kΩ Resistor Performance Mode Code Range
Resistor Tolerance Per Code
RAW = 50 kΩ
R-TOLERANCE
1% R-Tolerance
From 0x078 to 0x3FF
2% R-Tolerance
From 0x055 to 0x3FF
3% R-Tolerance
From 0x032 to 0x3FF
RAW = 100 kΩ
From 0x04B to 0x3FF
From 0x032 to 0x3FF
From 0x019 to 0x3FF
Rev. D | Page 4 of 28
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