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參數(shù)資料
| 型號： | MAX5160NEUA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DGTL LO PWR 32 TAP 8-UMAX |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 接片： | 32 |
| 電阻（歐姆）： | 200k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標準值 50 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | 3 線串行（芯片選擇，遞增，增/減） |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
MAX5160/MAX5161
Low-Power Digital Potentiometers
_______________________________________________________________________________________
5
Detailed Description
The MAX5160/MAX5161 consist of resistor arrays with
thirty-one resistive elements. Thirty-two tap points are
accessible to the wiper along the resistor string
between H and L. Logic inputs CS, U/D, and INC
determine the position of the wiper. With CS low and
U/D high, a high-to-low transition on INC increments the
internal counter, increasing the resistance between W
and L. When both CS and U/D are low, a high-to-low
INC transition decrements the internal counter, decreas-
ing the resistance between W and L. At either end
(maximum or minimum positions), additional transitions in
the direction of the end points will not change the counter
value (the counter will not wrap around).
The H and L terminals of the MAX5160 are similar to the
two end terminals of a mechanical potentiometer. The
tap W is equivalent to the variable tap (wiper) of the
potentiometer.
The MAX5161 is similar to the MAX5160 except that CS
internally connects to ground and the wiper terminal (W)
is shorted to the high terminal (H). The MAX5161 acts as
a variable resistor (a potentiometer with the wiper and
one end terminal shorted together).
The MAX5160/MAX5161 feature power-on reset circuit-
ry that sets the wiper position to midscale at power-up.
Applications Information
The MAX5160/MAX5161 are intended for circuits
requiring digitally controlled adjustable voltage or
adjustable gain, such as LCD contrast control, where
voltage biasing adjusts the display contrast.
Controlling a Switch-Mode
LCD Bias Generator
Figure 1 shows an application where the MAX5161 is
used with a MAX1771 to make an adjustable positive
LCD-bias circuit. The output of the MAX1771 is a posi-
tive voltage that is digitally controlled through the
MAX5160/MAX5161. Similarly, Figure 2 shows the
application of the MAX5161 in a digitally controlled
negative LCD-bias circuit along with the MAX774/
MAX775/MAX776.
MAX1771
VIN = 5V
REF
SHDN
AGND
GND
N
MTD20N03HDL
7
EXT
CS
FB
L1
22
H
D1
1N5817-22
C4
300
F
C5
C3
0.1
F
5
4
6
1
8
3
2
V+
C1
68
F
VOUT = 12V
AT 0.5A
R2
RSENSE
40m
C2
0.1
F
VREF = 1.5V
R1
RVAR
VOUT(MAX)
=
R2
+ 1
VREF
R1
VOUT(MIN)
=
(
R2
) +1
VREF
R1 + RVAR(MAX)
MAX5161
Figure 1. Adjustable Positive LCD Bias
MAX774
MAX775
MAX776
OUT
V+
SHDN
CS
FB
EXT
GND
P
7
8
C2
0.1
F
R3
0.07
R1
R2
RVAR
C1
150
F
6
5
2
3
1
REF
4
Q1
Si9435
1N5822/
MBR340
L1
22
H
C4
*
VIN
C3
0.1
F
VOUT
* MAX774 = 330F, 10V
MAX775, MAX776 = 120
F, 20V
VOUT(MAX)
=
R2
,
VOUT(MIN)
=
R2
VREF
R1
VREF
R1 + RVAR
VREF - VFB ≥ 5A (FOR 2% GAIN-SETTING ACCURACY)
R1 + RVAR
MAX5161
Figure 2. Adjustable Negative LCD Bias
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5161 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Power Digital Potentiometers |
| MAX5161LEUT | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX5161LEZT | 制造商:Maxim Integrated Products 功能描述:6 PIN COUNT MQUAD PACKAGE TYPE - Rail/Tube |
| MAX5161LEZT+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 32POS 50KOHM SGL 6PIN SOT-23 - Bulk |
| MAX5161LEZT+T | 功能描述:數(shù)字電位計 IC Low-Power 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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