參數(shù)資料
型號(hào)： MAX5422ETA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 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, 3-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, DSO8
封裝： 3 X 3 MM, 0.8 MM HEIGHT, MO229/WEEC, TDFN-8
文件頁數(shù)： 10/11頁
文件大小： 614K
代理商： MAX5422ETA
M
Programmable Filter
Figure 5 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 DC gain (G) and
the 3dB cutoff frequency (f
C
):
Adjustable Voltage Reference
Figure 6 shows the MAX5422/MAX5423/MAX5424 used
as the feedback resistors in an adjustable voltage-ref-
erence application. Independently adjust the output
voltage of the MAX6160 from 1.23V to V
IN
- 0.2V by
changing the wiper position of the MAX5422/
MAX5423/MAX5424.
Offset Voltage and Gain Adjustment
Connect the high and low terminals of one potentiome-
ter of a MAX5422/MAX5423/MAX5424 between the
NULL inputs of a MAX410 and the wiper to the op
amp
’
s positive supply to nullify the offset voltage over
the operating temperature range. Install another
MAX5422/MAX5423/MAX5424 potentiometer in the
feedback path to adjust the gain of the MAX410 (see
Figure 7).
G
R
R
f
R
C
C
1
×
=
+
=
π ×
1
2
1
2
3
256-Tap, Nonvolatile, SPI-Interface,
Digital Potentiometers
10
______________________________________________________________________________________
V
OUT
R1
W
H
L
W
H
L
MAX5422
MAX5423
MAX5424
R2
R3
V
IN
C
Figure 5. Programmable Filter
W
H
L
MAX6160
MAX5422
MAX5423
MAX5424
+5V
GND
V
IN
OUT
ADJ
V
0
REF
0
= 1.23V
200k
FOR THE MAX5424
V
2
(k
)
0
= 1.23V
100k
FOR THE MAX5423
V
2
(k
)
0
= 1.23V
50k
FOR THE MAX5422
V
2
(k
)
Figure 6. Adjustable Voltage Reference
6
8
1
7
2
3
5V
-5V
MAX5422
MAX410
4
Figure 7. Offset Voltage Adjustment Circuit
Chip Information
TRANSISTOR COUNT: 10,191
PROCESS: BiCMOS
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MAX5422ETA+T 功能描述:數(shù)字電位計(jì) IC 256-Tap Nonvolatile SPI-Interface 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
MAX5422ETA-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
MAX5422EVKIT 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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