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DP7411

更新时间： 2025-08-11 01:25:47
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尼得科 - NIDEC /
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16页 189K
描述
Dual Digital Potentiometers

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DP7411 数据手册

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DP7411  
Dual Digital Potentiometers (DP)  
with 64 Taps and SPI Interface  
FEATURES  
DESCRIPTION  
The DP7411 is two Digital Potentiometers  
(DPs) integrated with control logic and 16 bytes  
of NVRAM memory. Each DP consists of  
Two linear-taper digital potentiometers  
64 resistor taps per potentiometer  
End to end resistance 2.5kŸ, 10kŸ, 50kŸ or  
100kŸ  
a
series of 63 resistive elements connected  
between two externally accessible end points. The tap  
points between each resistive element are connected  
to the wiper outputs with CMOS switches. A separate  
6-bit control register (WCR) independently controls  
the wiper tap switches for each DP. Associated with  
each wiper control register are four 6-bit non-volatile  
memory data registers (DR) used for storing up to four  
wiper settings. Writing to the wiper control register or  
any of the non-volatile data registers is via a SPI serial  
bus. On power-up, the contents of the first data  
register (DR0) for each of the two potentiometers is  
automatically loaded into its respective wiper control  
register.  
Potentiometer control and memory access via  
SPI interface: Mode (0, 0) and (1, 1)  
Low wiper resistance, typically 80  
Nonvolatile memory storage for up to four  
wiper settings for each potentiometer  
Automatic recall of saved wiper settings at  
power up  
2.5 to 6.0 volt operation  
Standby current less than 1µA  
24-lead SOIC and 24-lead TSSOP  
Industrial temperature ranges  
The DP7411 can be used as a potentiometer or as a  
two terminal, variable resistor. It is intended for circuit  
level or system level adjustments in a wide variety of  
applications.  
FUNCTIONAL DIAGRAM  
PIN CONFIGURATION  
SOIC (W)  
(top view)  
TSSOP (Y)  
(top view)  
R
R
H1  
H0  
VCC  
RL0  
1
2
3
4
5
6
7
8
9
24 NC  
¯¯¯  
WP  
SI  
A1  
1
2
3
4
5
6
7
8
9
24  
23  
CS  
SCK  
SI  
WIPER  
CONTROL  
REGISTERS  
SPI BUS  
INTERFACE  
23 NC  
22 NC  
21 NC  
20 A0  
¯¯¯  
CS  
R
R
W0  
W1  
RH0  
RW0  
RL1  
22 RW0  
21 RH0  
20 RL0  
19 VCC  
SO  
RH1  
RW1  
GND  
NC  
¯¯¯  
CS  
¯¯¯  
WP  
19 SO  
DP  
DP  
7411 18  
WP  
A0  
NONVOLATILE  
DATA  
REGISTERS  
CONTROL  
LOGIC  
7411 18  
¯¯¯¯¯  
HOLD  
NC  
SI  
A1  
A1  
NC  
17 NC  
16 NC  
15 NC  
14 A0  
17 SCK  
NC  
RL1  
16 NC  
15 NC  
14 NC  
13 NC  
R
R
L1  
L0  
NC 10  
RH1 10  
RW1 11  
SCK 11  
¯¯¯¯¯  
HOLD  
12  
13 SO  
GND 12  
For Ordering Information details, see page 15.  
© NIDEC COPAL ELECTRONICS CORP.  
Characteristics subject to change without notice  
1
Doc. No. MD-2114 Rev. J  
1234567...16

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