MAX5417LETA-T Datasheet, PDF (1/14 Pages) Maxim Integrated Products – 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers

19-3185; Rev 4; 4/10
256-Tap, Nonvolatile, I²C-Interface,
Digital Potentiometers
General Description
The MAX5417/MAX5418/MAX5419 nonvolatile, linear-
taper, digital potentiometers perform the function of a
mechanical potentiometer by replacing the mechanics
with a simple 2-wire digital interface, allowing communi-
cation with multiple devices. Each device performs the
same function as a discrete potentiometer or variable
resistor and has 256 tap points.
The devices feature an internal, nonvolatile EEPROM
used to store the wiper position for initialization during
power-up. The fast-mode I²C-compatible serial interface
allows communication at data rates up to 400kbps, mini-
mizing board space and reducing interconnection com-
plexity in many applications. Each device is available with
one of four factory-preset addresses (see the Ordering
Information/Selector Guide) and features an address
input for a total of eight unique address combinations.
The MAX5417/MAX5418/MAX5419 provide three nomi-
nal resistance values: 50kΩ (MAX5417), 100kΩ
(MAX5418), or 200kΩ (MAX5419). The nominal resistor
temperature coefficient is 35ppm/°C end-to-end, and
only 5ppm/°C ratiometric. This makes the devices ideal
for applications requiring a low-temperature-coefficient
variable resistor, such as low-drift, programmable gain-
amplifier circuit configurations.
The MAX5417/MAX5418/MAX5419 are available in a
3mm x 3mm 8-pin TDFN package, and are specified
over the extended -40°C to +85°C temperature range.
Applications
Mechanical Potentiometer Replacement
Low-Drift Programmable-Gain Amplifiers
Volume Control
Liquid-Crystal Display (LCD) Contrast Control
Features
o Power-On Recall of Wiper Position from
Nonvolatile Memory
o Tiny 3mm x 3mm 8-Pin TDFN Package
o 35ppm/°C End-to-End Resistance Temperature
Coefficient
o 5ppm/°C Ratiometric Temperature Coefficient
o 50kΩ/100kΩ/200kΩ Resistor Values
o Fast I²C-Compatible Serial Interface
o 500nA (typ) Static Supply Current
o Single-Supply Operation: +2.7V to +5.25V
o 256 Tap Positions
o ±0.5 LSB DNL in Voltage-Divider Mode
o ±0.5 LSB INL in Voltage-Divider Mode
Functional Diagram
H
V_DD
GND
8-BIT 8
SHIFT
REGISTER
8-BIT 8
LATCH
256-
POSITION
256
DECODER
W
L
SDA
SCL
A₀
I²C
POR
INTERFACE
8-BIT
NV
MEMORY
MAX5417
MAX5418
MAX5419
PART
TEMP RANGE
MAX5417LETA+
-40°C to +85°C
MAX5417META+
-40°C to +85°C
MAX5417NETA+
-40°C to +85°C
MAX5417PETA+
-40°C to +85°C
MAX5418LETA+
-40°C to +85°C
MAX5418META+
-40°C to +85°C
MAX5418NETA+
-40°C to +85°C
MAX5418PETA+
-40°C to +85°C
MAX5419LETA+
-40°C to +85°C
MAX5419META+
-40°C to +85°C
MAX5419NETA+
-40°C to +85°C
MAX5419PETA+
-40°C to +85°C
+Denotes a lead(Pb)-free/RoHS-compliant package.
**Exposed pad.
Ordering Information/Selector Guide
I²C ADDRESS
010100A₀
010101A₀
010110A₀
010111A₀
010100A₀
010101A₀
010110A₀
010111A₀
010100A₀
010101A₀
010110A₀
010111A₀
R (kΩ)
50
50
50
50
100
100
100
100
200
200
200
200
PIN-PACKAGE
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
8 TDFN-EP**
TOP MARK
AIB
ALS
ALT
ALU
AIC
ALV
ALW
ALX
AID
ALY
ALZ
AMA
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.