参数资料
型号: MAX5424ETA+T
厂商: Maxim Integrated Products
文件页数: 2/11页
文件大小: 0K
描述: IC POT DGTL 256-TAP NV 8-TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
接片: 256
电阻(欧姆): 200k
电路数: 1
温度系数: 标准值 35 ppm/°C
存储器类型: 非易失
接口: 3 线串口
电源电压: 2.7 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-WDFN 裸露焊盘
供应商设备封装: 8-TDFN-EP(3x3)
包装: 标准包装
其它名称: MAX5424ETA+TDKR
MAX5422/MAX5423/MAX5424
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 (fC):
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 VIN - 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
f
RC
C
=+
=
π×
×
1
2
1
23
256-Tap, Nonvolatile, SPI-Interface,
Digital Potentiometers
10
______________________________________________________________________________________
VOUT
R1
W
H
L
W
H
L
MAX5422
MAX5423
MAX5424
R2
R3
VIN
C
Figure 5. Programmable Filter
W
H
L
MAX6160
MAX5422
MAX5423
MAX5424
+5V
GND
VIN
OUT
ADJ
V0 REF
V0 = 1.23V
200k
Ω
FOR THE MAX5424
R2(k
Ω)
V0 = 1.23V
100k
Ω
FOR THE MAX5423
R2(k
Ω)
V0 = 1.23V
50k
Ω
FOR THE MAX5422
R2(k
Ω)
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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