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參數(shù)資料
| 型號： | MAX5461EXT+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 7/10頁 |
| 文件大小： | 0K |
| 描述： | IC POT DGTL 32-TAP 2WIRE SC70-6 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | FleaPoT™ |
| 接片： | 32 |
| 電阻（歐姆）： | 100k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 35 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | 2 線串行（芯片選擇，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： | 6-TSSOP，SC-88，SOT-363 |
| 供應(yīng)商設(shè)備封裝： | SC-70-6 |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 1399 (CN2011-ZH PDF) |
| 其它名稱： | MAX5461EXT+TDKR |
MAX5460–MAX5468
32-Tap FleaPoT, 2-Wire Digital
Potentiometers
6
_______________________________________________________________________________________
Power-On Reset
All parts in this family feature power-on reset (POR) cir-
cuitry that sets the wiper position to midscale at power-
up. By default, the chip is in the increment mode.
Applications Information
The MAX5460–MAX5468 are intended for circuits
requiring digitally controlled adjustable resistance,
such as LCD contrast control, where voltage biasing
adjusts the display contrast.
Controlling a Switch-Mode
LCD Bias Generator
Figure 3 shows an application where the variable resis-
tor is used with a MAX1771 to make an adjustable posi-
tive LCD-bias circuit. The output of the MAX1771 is a
positive voltage that is digitally controlled through the
MAX5461/MAX5464/MAX5467. Similarly, Figure 4
shows the application of the variable resistor in a digi-
tally controlled negative LCD-bias circuit along with the
MAX774/MAX775/MAX776.
Alternative Positive
LCD Bias Control
Alternatively, use an op amp to provide buffering and
gain to the output of the MAX5462/MAX5465/MAX5468.
Connect the mechanical potentiometer to the positive
input of a noninverting op amp (Figure 5) to select a
portion of the input signal by digitally controlling the
wiper terminal. Figure 6 shows a similar circuit for the
MAX5461/MAX5464/MAX5467.
Adjustable Gain
Figure 7 shows how to use the variable resistor to digi-
tally adjust the gain of a noninverting op amp configura-
tion. Connect the MAX5461/MAX5464/MAX5467 in
series with a resistor to ground to form the adjustable
gain control of a noninverting amplifier. The MAX5460–
MAX5468 have a low 5ppm/°C ratiometric tempco that
allows for a very stable adjustable gain configuration
over temperature.
Figure 3. Adjustable Positive LCD Bias
Figure 4. Adjustable Negative LCD Bias
MAX774
MAX775
MAX776
OUT
V+
SHDN
CS
FB
EXT
GND
P
7
8
C2
0.1F
R3
0.07
R1
R2
RVAR
C1
150F
6
5
2
3
1
REF
4
Q1
Si9435
1N5822/
MBR340
L1
22H
C4
*
VIN
C3
0.1F
VOUT
* MAX774 = 330F, 10V
MAX775/MAX776 = 120F, 20V
VOUT(MAX)
=
R2
,
VOUT(MIN)
=
R2
VREF
R1
VREF
R1 + RVAR
VREF - VFB
≥ 5A (FOR 2% GAIN-SETTING ACCURACY)
R1 + RVAR
MAX5461
MAX5464
MAX5467
MAX1771
VIN = 5V
REF
SHDN
AGND
GND
N
MTD20N03HDL
7
EXT
CS
FB
L1
22H
D1
1N5817-22
C4
300F
C5
C3
0.1F
5
4
6
1
8
3
2
V+
C1
68F
VOUT = 12V
AT 0.5A
R2
RSENSE
40m
C2
0.1F
VREF = 1.5V
R1
RVAR
VOUT(MAX)
=
R2
+ 1
VREF
R1
VOUT(MIN)
=
(
R2
) +1
VREF
R1 + RVAR(MAX)
MAX5461
MAX5464
MAX5467
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5462EXT | 制造商:Maxim Integrated Products 功能描述:32-TAP FLEAPOT 2-WIRE DIGITAL POTEN - Cut Tape Product |
| MAX5462EXT+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 32POS 100KOHM SGL 6PIN SC-70 - Rail/Tube |
| MAX5462EXT+T | 功能描述:數(shù)字電位計 IC 32-Tap FleaPoT 2Wire 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 |
| MAX5462EXT-T | 功能描述:數(shù)字電位計 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 |
| MAX5463EXK+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 32POS 50KOHM SGL 5PIN SC-70 - Rail/Tube |
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