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| 型號： | EVAL-AD5270SDZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 21/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD5270 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 數(shù)字電位器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | AD5270 |
| 主要屬性： | 1 通道，1024 位置 |
| 次要屬性： | 2.7 ~ 5.5 V，5 ppm/°C，SPI 接口 |
| 已供物品： | 電路板，CD，器件，穩(wěn)壓器 |
AD5270/AD5271
Data Sheet
Rev. F | Page 6 of 24
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
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 25 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. AD5271—20 k 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. AD5271—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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