Datasheet 搜索 > 数字电位器 > ADI（亚德诺） > AD5272BRMZ-50-RL7 数据手册 > AD5272BRMZ-50-RL7 数据手册 4/28 页
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AD5272BRMZ-50-RL7 数据手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
数字电位器
封装:
MSOP-10
描述:
1024 / 256位， 1 ％电阻容差误差， I2C接口和50 -TP存储器数字电位器 1024-/256-Position, 1% Resistor Tolerance Error, I2C Interface and 50-TP Memory Digital Rheostat
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引脚图在P10P25Hot
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型号编码规则在P26
焊接温度在P9
功能描述在P1P10P25
技术参数、封装参数在P1P3P7P9P17P24
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AD5272BRMZ-50-RL7数据手册
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AD5272/AD5274 Data Sheet
Rev. D | Page 4 of 28
Parameter Symbol Test Conditions/Comments Min Typ
1
Max Unit
Power Supply Rejection Ratio
5
PSRR ΔV
DD
/ΔV
SS
= ±5 V ± 10% dB
R
AW
= 20 kΩ −66 −55
R
AW
= 50 kΩ −75 −67
R
AW
= 100 kΩ −78 −70
DYNAMIC CHARACTERISTICS
5, 11
Bandwidth −3 dB, R
AW
= 10 kΩ, Terminal W, see Figure 41 kHz
R
AW
= 20 kΩ 300
R
AW
= 50 kΩ 120
R
AW
= 100 kΩ 60
Total Harmonic Distortion V
A
= 1 V rms, f = 1 kHz, code = half scale dB
R
AW
= 20 kΩ −90
R
AW
= 50 kΩ −88
R
AW
= 100 kΩ −85
Resistor Noise Density
Code = half scale, T
A
= 25°C, f = 10 kHz
nV/√Hz
R
AW
= 20 kΩ 13
R
AW
= 50 kΩ 25
R
AW
= 100 kΩ 32
1
Typical specifications represent average readings at 25°C, V
DD
= 5 V, and V
SS
= 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 I
AW
= (V
DD
− 1)/R
AW
.
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
P
DISS
is calculated from (I
DD
× V
DD
) + (I
SS
× V
SS
).
11
All dynamic characteristics use V
DD
= +2.5 V, V
SS
= −2.5 V.
Table 2. AD5272 Resistor Performance Mode Code Range
Resistor Tolerance Per Code |V
DD
− V
SS
| = 4.5 V to 5.5 V |V
DD
− V
SS
| = 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 kΩ and 100 kΩ Resistor Performance Mode Code Range
Resistor Tolerance Per Code R
AW
= 50 kΩ R
AW
= 100 kΩ
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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