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參數(shù)資料
| 型號(hào)： | MAX5434NEZT-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 數(shù)字電位計(jì) |
| 英文描述： | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| 中文描述： | 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 32 POSITIONS, PDSO6 |
| 封裝： | SOT-23, 6 PIN |
| 文件頁(yè)數(shù)： | 12/17頁(yè) |
| 文件大?。?/td> | 376K |
| 代理商： | MAX5434NEZT-T |
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M
32-Tap, Nonvolatile, I
2
C, Linear, Digital
Potentiometers
12
______________________________________________________________________________________
Applications Information
Use the MAX5432–MAX5435 in applications requiring
digitally controlled adjustable resistance, such as LCD
contrast control (where voltage biasing adjusts the dis-
play contrast), or for programmable filters with
adjustable gain and/or cutoff frequency.
Positive LCD Bias Control
Figures 9 and 10 show an application where the volt-
age-divider or variable resistor is used to make an
adjustable, positive LCD bias voltage. The op-amp pro-
vides buffering and gain to the resistor-divider network
made by the potentiometer (Figure 9) or to a fixed
resistor and a variable resistor (Figure 10).
Programmable Filter
Figure 11 shows the configuration for a 1st-order pro-
grammable filter. The gain of the filter is adjusted by
R2, and the cutoff frequency is adjusted by R3. Use the
following equations to calculate the gain (G) and the
3dB cutoff frequency (f
C
).
Adjustable Voltage Reference
Figure 12 shows the MAX5432/MAX5433 used as the
feedback resistors in an adjustable voltage reference
application. Independently adjust the output voltages of
the MAX6160 from 1.23V to (V
IN
- 0.2V) by changing
the wiper position of the MAX5432/MAX5433.
G
R
R
f
R
C
C
1
×
×
=
+
=
1
2
1
2
3
π
M
V
OUT
30V
5V
W
H
L
MAX5432
MAX5433
Figure 9. Positive LCD Bias Control Using a Voltage-Divider
V
OUT
30V
5V
W
H
L
MAX5432–
MAX5435
Figure 10. Positive LCD Bias Control Using a Variable Resistor
V
OUT
R1
W
H
L
MAX5432–
MAX5435
R2
V
IN
R3
H
W
L
C
Figure 11. Programmable Filter
W
H
L
MAX6160
MAX5432
MAX5433
+5V
GND
V
IN
OUT
ADJ
V
0
REF
0
= 1.23V
100k
FOR THE MAX5433
V
2
(k
)
0
= 1.23V
50k
FOR THE MAX5432
V
2
(k
)
R
1
R
2
Figure 12. Adjustable Voltage Reference
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PDF描述 |
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| MAX5435LEZT | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
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| MAX5435MEZT | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5434PEKT-T | 制造商:Maxim Integrated Products 功能描述:32-TAP, NONVOLATILE, I2C, LINEAR, DIGITAL POT - Tape and Reel |
| MAX5434PEZT | 制造商:Maxim Integrated Products 功能描述:32-TAP NONVOLATILE I2C LINEAR D - Rail/Tube |
| MAX5434PEZT+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 32POS 50KOHM SGL 6PIN TSOT-23 - Rail/Tube |
| MAX5434PEZT+T | 功能描述:數(shù)字電位計(jì) IC 32-Tap Nonvolatile Linear Digital Pot RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5434PEZT-T | 功能描述:數(shù)字電位計(jì) IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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