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参数资料
| 型号： | AD5271BCPZ-20-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/24页 |
| 文件大小： | 0K |
| 描述： | IC RHEOSTAT 5V 50-TP 256 10MSOP |
| 标准包装： | 1 |
| 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： | 4 线串行 |
| 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： | 标准包装 |
| 其它名称： | AD5271BCPZ-20-RL7DKR |
AD5270/AD5271
Data Sheet
Rev. F | Page 4 of 24
Parameter
Symbol
Test Conditions/Comments
Min
Typ1
Max
Unit
Power Dissipation10
VIH = VDD or VIL = GND
5.5
W
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
Bandwidth
3 dB, RAW = 10 k, Terminal W,
see
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 2. AD5270—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 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. AD5270—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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