MAX5417 MAXIM [Maxim Integrated Products], MAX5417 Datasheet - Page 8

• Manufacturer Part Number: MAX5417
• Description: 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers
• Manufacturer: MAXIM [Maxim Integrated Products]

256-Tap, Nonvolatile, I
Digital Potentiometers
Figure 1. I
Figure 2. Load Circuit
8
PARAMETERS ARE MEASURED FROM 30% TO 70%.
SDA
SCL
_______________________________________________________________________________________
PIN
—
1
2
3
4
5
6
7
8
S
2
C Serial-Interface Timing Diagram
t
SU-DAT
NAME
SDA
GND
t
V
SCL
SDA
HD-STA
A0
EP
t
W
H
LOW
DD
L
t
R
Power-Supply Input. 2.7V to 5.25V voltage range. Bypass with a 0.1µF capacitor from V
I
I
Address Input. Sets the A0 bit in the device ID address.
Ground
Low Terminal
Wiper Terminal
High Terminal
Exposed Pad
2
2
C-Interface Clock Input
C-Interface Data Input
t
HIGH
V
DD
I
I
t
OL
OH
F
= 3mA
= 0mA
400pF
t
V
HD-DAT
OUT
t
SU-STA
2
C-Interface,
The MAX5417/MAX5418/MAX5419 contain a resistor
array with 255 resistive elements. The MAX5417 has a
total end-to-end resistance of 50kΩ, the MAX5418 has
an end-to-end resistance of 100kΩ, and the MAX5419
has an end-to-end resistance of 200kΩ. The
MAX5417/MAX5418/MAX5419 allow access to the high,
low, and wiper terminals for a standard voltage-divider
configuration. H, L, and W can be connected in any
desired configuration as long as their voltages fall
between GND and V
A simple 2-wire I
the wiper among the 256 tap points. A nonvolatile mem-
ory stores the wiper position and recalls the stored wiper
position in the nonvolatile memory upon power-up. The
nonvolatile memory is guaranteed for 50 years for wiper
data retention and up to 200,000 wiper store cycles.
Sr
FUNCTION
t
HD-STA
A
2
C-compatible serial interface moves
DD
Detailed Description
.
t
SU-STO
Pin Description
DD
t
R
P
to GND.
t
BUF
t
F
S