MAX5404EUB Maxim Integrated Products, MAX5404EUB Datasheet - Page 7
![IC POT DUAL DGTL 256TAP 10-UMAX](/photos/6/57/65724/175-10-umax_sml.jpg)
MAX5404EUB
Manufacturer Part Number
MAX5404EUB
Description
IC POT DUAL DGTL 256TAP 10-UMAX
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5403EUB.pdf
(10 pages)
Specifications of MAX5404EUB
Taps
256
Resistance (ohms)
50K
Number Of Circuits
2
Temperature Coefficient
35 ppm/°C Typical
Memory Type
Volatile
Interface
3-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Resistance In Ohms
50K
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MAX5404EUB
Manufacturer:
MAXIM/美信
Quantity:
20 000
Figure 1. MAX5403/MAX5404/MAX5405 Functional Diagram: 2-Terminal Variable Resistor and 3-Terminal Potentiometers in 10-µMAX
Configuration
Each potentiometer consists of 255 fixed resistors in
series between pins H
potentiometer and between W
nal variable resistor
(pin W
256 different tap points on the resistor string. The
MAX5403/MAX5404/MAX5405 require nine bits to pro-
gram the wiper position. The 1st bit is an address code,
PIN
X
10
1
2
3
4
5
6
7
8
9
) can be programmed to access any one of the
_______________________________________________________________________________________
(Figure 1). The potentiometer wiper
NAME
SCLK
GND
V
DIN
W
W
H
CS
L
L
Detailed Description
SCLK
DD
GND
B
A
B
V
B
A
DIN
CS
DD
B
and L
A
Digital Potentiometers in 10-µMAX
REGISTER
DECODE
and L
Ground
Low Terminal of Resistor B
High Terminal of Resistor B
Wiper Terminal of Resistor B
SPI Chip Select
SPI Serial Data Input
SPI Clock Input
Power Supply, +2.7V to +5.5V. Connect a 0.1 F capacitor to GND.
Wiper Terminal of Resistor A
Low Terminal of Resistor A
SHIFT
9-BIT
B
SR
R
for the 3-terminal
A
for the 2-termi-
8
POR
LATCH
LATCH
8-BIT
8-BIT
R
R
8
8
Dual 256-Tap, Low-Drift,
allowing one or the other potentiometers to be selected
for programming. The potentiometers are programmed
independently of each other.
The MAX5403/MAX5404/MAX5405 use a 3-wire serial
data interface to control the wiper tap position. This
write-only interface contains three inputs: Chip Select
(CS), Data In (DIN), and Data Clock (SCLK). When CS
is taken low, data from the DIN pin is synchronously
loaded into the serial shift register on each rising edge
DECODE
DECODE
256
256
FUNCTION
MAX5403
MAX5404
MAX5405
W
L
H
W
L
A
B
B
A
B
Pin Description
7