参数资料
型号: AD5274BRMZ-20
厂商: Analog Devices Inc
文件页数: 23/28页
文件大小: 0K
描述: IC DGTL POT 20K 256POS 10MSOP
标准包装: 50
接片: 256
电阻(欧姆): 20k
电路数: 1
温度系数: 标准值 5 ppm/°C
存储器类型: 非易失
接口: I²C
电源电压: 2.7 V ~ 5.5 V,±2.5 V ~ 2.75 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
产品目录页面: 787 (CN2011-ZH PDF)
AD5272/AD5274
Data Sheet
Rev. D | Page 4 of 28
Parameter
Symbol
Test Conditions/Comments
Min
Typ1
Max
Unit
Power Supply Rejection Ratio5
PSRR
ΔVDD/ΔVSS = ±5 V ± 10%
dB
RAW = 20 k
66
55
RAW = 50 k
75
67
RAW = 100 k
78
70
DYNAMIC CHARACTERISTICS5, 11
Bandwidth
3 dB, RAW = 10 k, Terminal W, see Figure 41
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 2. AD5272 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 0x078 to 0x3FF
From 0x0BE to 0x3FF
2% R-Tolerance
From 0x037 to 0x3FF
From 0x055 to 0x3FF
3% R-Tolerance
From 0x028 to 0x3FF
From 0x037 to 0x3FF
Table 3. AD5272 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 0x078 to 0x3FF
From 0x04B to 0x3FF
2% R-Tolerance
From 0x055 to 0x3FF
From 0x032 to 0x3FF
3% R-Tolerance
From 0x032 to 0x3FF
From 0x019 to 0x3FF
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