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參數(shù)資料
| 型號： | MAX5527GTA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 2/12頁 |
| 文件大小： | 0K |
| 描述： | IC POT DGTL 1TIME PROGR 8-TDFN |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 接片： | 64 |
| 電阻（歐姆）： | 100k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標準值 35 ppm/°C |
| 存儲器類型： | 非易失 |
| 接口： | 2 線串行（芯片選擇，增/減） |
| 電源電壓： | 2.7 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WDFN 裸露焊盤 |
| 供應商設備封裝： | 8-TDFN-EP（3x3） |
| 包裝： | 帶卷 (TR) |
MAX5527/MAX5528/MAX5529
One-Time Programmable, Linear-Taper Digital
Potentiometers
10
______________________________________________________________________________________
Applications Information
Use the MAX5527/MAX5528/MAX5529 in applications
requiring digitally controlled adjustable resistance,
such as LCD contrast control where voltage biasing
adjusts the display contrast, or for programmable filters
with adjustable gain and/or cutoff frequency.
Positive LCD Bias Control
Figures 7 and 8 show an application where the voltage-
divider or variable resistor is used to make an adjustable,
positive LCD bias voltage. The op-amp provides buffer-
ing and gain to the resistor-divider network made by the
potentiometer (Figure 7), or to a fixed resistor and a
variable resistor (Figure 8).
Programmable Filter
Figure 9 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 (fC), only up to frequencies one
decade below the wiper -3dB bandwidth.
Adjustable Voltage Reference
Figure 10 shows the MAX5527/MAX5528/MAX5529
used as the feedback resistors in an adjustable-voltage
reference application.
G
R
f
xR xC
C
=+
=
1
2
1
23
π
VOUT
30V
5V
W
H
L
MAX5527
MAX5528
MAX5529
Figure 7. Positive LCD Bias Control Using a Voltage-Divider
VOUT
30V
5V
W
H
L
MAX5527
MAX5528
MAX5529
Figure 8. Positive LCD Bias Control Using a Variable Resistor
VOUT
R1
W
H
L
R2
VIN
R3
H
W
L
C
MAX5527
MAX5528
MAX5529
5V
Figure 9. Programmable Filter
W
H
L
MAX6160
+5V
GND
VIN
OUT
ADJ
V0 REF
V0 = 1.23V x
100k
FOR THE MAX5527
R2(k
)
V0 = 1.23V x
50k
FOR THE MAX5528
R2(k
)
R1
R2
MAX5527
MAX5528
MAX5529
V0 = 1.23V x
10k
FOR THE MAX5529
R2(k
)
Figure 10. Adjustable Voltage Reference
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