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| 型號： | AD5274BRMZ-20-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 25/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DGTL POT 20K 256POS 10MSOP |
| 標準包裝： | 1,000 |
| 接片： | 256 |
| 電阻（歐姆）： | 20k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標準值 5 ppm/°C |
| 存儲器類型： | 非易失 |
| 接口： | I²C |
| 電源電壓： | 2.7 V ~ 5.5 V，±2.5 V ~ 2.75 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
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AD5272/AD5274
Data Sheet
Rev. D | Page 6 of 28
Parameter
Symbol
Test Conditions/Comments
Min
Typ1
Max
Unit
DYNAMIC CHARACTERISTICS5, 11
Bandwidth
kHz
RAW = 20 k
300
RAW = 50 k
120
RAW = 100 k
60
Total Harmonic Distortion
VA = 1 V rms, f = 1 kHz, code = half scale
dB
RAW = 20 k
90
RAW = 50 k
88
RAW = 100 k
85
Resistor Noise Density
Code = half scale, TA = 25°C, f = 10 kHz
nV/√Hz
RAW = 20 k
13
RAW = 50 k
25
RAW = 100 k
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 5. AD5274 Resistor Performance Mode Code Range
Resistor Tolerance per Code
|VDD VSS| = 4.5 V to 5.5 V
|VDD VSS| = 2.7 V to 4.5 V
R-TOLERANCE
1% R-Tolerance
From 0x1E to 0xFF
From 0x32 to 0xFF
2% R-Tolerance
From 0x0F to 0xFF
From 0x19 to 0xFF
3% R-Tolerance
From 0x06 to 0xFF
From 0x0E to 0xFF
Table 6. AD5274 50 k and 100 k Resistor Performance Mode Code Range
Resistor Tolerance per Code
RAW = 50 k
RAW = 100 k
R-TOLERANCE
1% R-Tolerance
From 0x1E to 0xFF
From 0x14 to 0xFF
2% R-Tolerance
From 0x14 to 0xFF
From 0x0F to 0xFF
3% R-Tolerance
From 0x0A to 0xFF
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