Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - Digital potentiometer linear Permanent TDFN 8 EP

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 I

C-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 I

C-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

MAX5417/MAX5418/MAX5419

256-Tap, Nonvolatile, I

C-Interface,

Digital Potentiometers

________________________________________________________________

Maxim Integrated Products

GND

SDA

SCL

8-BIT

SHIFT

8-BIT

LATCH

8-BIT

MEMORY

INTERFACE

256

256-

POSITION

DECODER

POR

MAX5417

MAX5418

MAX5419

Ordering Information/Selector Guide

Functional Diagram

19-3185; Rev 4; 4/10

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.

Pin Configuration appears at end of data sheet.

Denotes a lead(Pb)-free/RoHS-compliant package.

Exposed pad.

PART TEMP RANGE I

C ADDRESS R (kΩ) PIN-PACKAGE TOP MARK

MAX5417LETA+ -40°C to +85°C 010100A

50 8 TDFN-EP** AIB

MAX5417META+ -40°C to +85°C 010101A

50 8 TDFN-EP** ALS

MAX5417NETA+ -40°C to +85°C 010110A

50 8 TDFN-EP** ALT

MAX5417PETA+ -40°C to +85°C 010111A

50 8 TDFN-EP** ALU

MAX5418LETA+ -40°C to +85°C 010100A

100 8 TDFN-EP** AIC

MAX5418META+ -40°C to +85°C 010101A

100 8 TDFN-EP** ALV

MAX5418NETA+ -40°C to +85°C 010110A

100 8 TDFN-EP** ALW

MAX5418PETA+ -40°C to +85°C 010111A

100 8 TDFN-EP** ALX

MAX5419LETA+ -40°C to +85°C 010100A

200 8 TDFN-EP** AID

MAX5419META+ -40°C to +85°C 010101A

200 8 TDFN-EP** ALY

MAX5419NETA+ -40°C to +85°C 010110A

200 8 TDFN-EP** ALZ

MAX5419PETA+ -40°C to +85°C 010111A

200 8 TDFN-EP** AMA

Summary of content (14 pages)

PAGE 1
9-3185; Rev 4; 4/10 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers 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.
PAGE 2
MAX5417/MAX5418/MAX5419 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers ABSOLUTE MAXIMUM RATINGS VDD to GND ...........................................................-0.3V to +6.0V All Other Pins to GND.................................-0.3V to (VDD + 0.3V) Maximum Continuous Current into H, L, and W MAX5417......................................................................±1.3mA MAX5418......................................................................±0.6mA MAX5419......................
PAGE 3
256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers (VDD = +2.7V to +5.25V, H = VDD, L = GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VDD = +5V, TA = +25°C.) DIGITAL INPUTS Input High Voltage (Note 4) VIH VDD = 3.4V to 5.25V VDD < 3.4V 2.4 V 0.7 x VDD Input Low Voltage VIL VDD = 2.7V to 5.25V (Note 4) 0.8 V Low-Level Output Voltage VOL 3mA sink current 0.
PAGE 4
MAX5417/MAX5418/MAX5419 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers TIMING CHARACTERISTICS (continued) (VDD = +2.7V to +5.25V, H = VDD, L = GND, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VDD = +5V, TA = +25°C. See Figures 1 and 2.) (Note 7) PARAMETER SYMBOL CONDITIONS MIN Data Setup Time tSU-DAT 100 Data Hold Time tHD-DAT 0 SDA, SCL Rise Time SDA, SCL Fall Time TYP tF tSU-STO Bus Free Time Between STOP and START Condition tBUF UNITS 0.
PAGE 5
256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers INL vs. TAP POSITION 0.05 0.05 INL (LSB) 0.10 0 -0.05 0 -0.05 -0.10 -0.10 -0.15 -0.15 -0.20 -0.20 -0.25 32 64 96 500 400 300 200 100 -0.25 0 128 160 192 224 256 0 32 TAP POSITION 64 96 128 160 192 224 256 0 32 64 TAP POSITION 96 128 160 192 224 256 TAP POSITION END-TO-END RESISTANCE % CHANGE vs. TEMPERATURE WIPER TRANSIENT AT POWER-ON MAX5417 toc04 W 1V/div CL = 10pF TAP = 128 H = VDD MAX5417 toc05 1.
PAGE 6
Typical Operating Characteristics (continued) (VDD = +5V, TA = +25°C, unless otherwise noted.) INL vs. TAP POSITION (MAX5417) THD+N RESPONSE 500 10 3.0 MAX5417 toc09 100 MAX5417 toc08 600 1:1 RATIO 20Hz TO 20kHz BANDPASS VARIABLE-RESISTOR MODE VDD = 2.7V ISRC = 50µA 2.5 2.0 400 300 INL (LSB) THD+N (%) 1 0.1 200 0.01 100 0.001 MAX5417 toc10 SUPPLY CURRENT vs. DIGITAL INPUT VOLTAGE SUPPLY CURRENT (µA) 1.5 1.0 0.5 0 -0.5 0.0001 0 1 2 3 5 4 -1.
PAGE 7
256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers MIDSCALE WIPER RESPONSE vs. FREQUENCY (MAX5417) -5 -0.1 -0.2 CL = 10pF -10 -15 CL = 50pF -20 -25 -0.3 32 64 96 128 160 192 224 256 MAX5418 TAP = 128 -5 CL = 10pF -10 -15 CL = 50pF -20 -25 -30 -30 1 TAP POSITION 10 100 1000 1 FREQUENCY (kHz) MIDSCALE WIPER RESPONSE vs.
PAGE 8
256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers MAX5417/MAX5418/MAX5419 Pin Description PIN NAME 1 VDD Power-Supply Input. 2.7V to 5.25V voltage range. Bypass with a 0.1µF capacitor from VDD to GND. 2 SCL I2C-Interface Clock Input 3 SDA I2C-Interface Data Input 4 A0 5 GND FUNCTION Address Input. Sets the A0 bit in the device ID address. Ground 6 L Low Terminal 7 W Wiper Terminal 8 H High Terminal — EP Exposed Pad. Internally connected to GND.
PAGE 9
256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers Digital Interface The MAX5417/MAX5418/MAX5419 feature an internal, nonvolatile EEPROM that stores the wiper state for initialization during power-up. The shift register decodes the control and address bits, routing the data to the proper memory registers. Data can be written to a volatile memory register, immediately updating the wiper position, or data can be written to a nonvolatile register for storage.
PAGE 10
MAX5417/MAX5418/MAX5419 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers Table 1.
PAGE 11
256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers D14 D13 D12 D11 D10 D9 MAX5417/MAX5418/MAX5419 D15 CONTROL BYTE IS STORED ON RECEIPT OF STOP CONDITION D8 ACKNOWLEDGE FROM MAX5417/MAX5418/MAX5419 S SLAVE ADDRESS 0 A CONTROL BYTE P A ACKNOWLEDGE FROM MAX5417/MAX5418/MAX5419 NOP/W Figure 7.
PAGE 12
MAX5417/MAX5418/MAX5419 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers Table 2.
PAGE 13
256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers VIN 5V L H R3 C MAX5417 MAX5418 MAX5419 VOUT 7 3 1 R1 8 6 MAX410 2 H MAX5417 MAX5418 MAX5419 4 W R2 W -5V L H R1 L Figure 13. Offset Voltage and Gain Adjustment Circuit Figure 11. Programmable Filter Pin Configuration TOP VIEW +5V + VIN VDD 1 V0 REF OUT H SCL 2 MAX6160 ADJ MAX5417 MAX5418 MAX5419 SDA 3 W GND 8 H 7 W MAX5417 MAX5418 MAX5419 A0 4 6 L 5 GND L TDFN Figure 12.
PAGE 14
MAX5417/MAX5418/MAX5419 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 2/04 Initial release — 1 4/04 Adding future product — 2 8/04 Adding new part 3 3/09 Changes to add details about exposed pad, corrections to Table 2, style edits 1, 8, 12–15 4 4/10 Added lead-free packages to Ordering Information, added Soldering Temperature to Absolute Maximum Ratings, corrected Conditions for Differential Nonli