MAX5842LEUB+ Datasheet MAX5842LEUB+, MAX5842MEUB+, MAX5842MEUB+T | P1-P3

General Description

The MAX5842 is a quad, 12-bit voltage-output, digital-

to-analog converter (DAC) with an I

™

-compatible,

2-wire interface that operates at clock rates up to

400kHz. The device operates from a single 2.7V to 5.5V

supply and draws only 230µA at V

= 3.6V. A power-

down mode decreases current consumption to less

than 1µA. The MAX5842 features three software-selec-

table power-down output impedances: 100kΩ , 1kΩ,

and high impedance. Other features include internal

precision Rail-to-Rail

output buffers and a power-on

reset (POR) circuit that powers up the DAC in the

100kΩ power-down mode.

The MAX5842 features a double-buffered I

C-compati-

ble serial interface that allows multiple devices to share

a single bus. All logic inputs are CMOS-logic compati-

ble and buffered with Schmitt triggers, allowing direct

interfacing to optocoupled and transformer-isolated

interfaces. The MAX5842 minimizes digital noise

feedthrough by disconnecting the clock (SCL) signal

from the rest of the device when an address mismatch

is detected.

The MAX5842 is specified over the extended tempera-

ture range of -40°C to +85°C and is available in a

miniature 10-pin µMAX package. Refer to the MAX5841

data sheet for the 10-bit version.

Applications

Digital Gain and Offset Adjustments

Programmable Voltage and Current Sources

Programmable Attenuation

VCO/Varactor Diode Control

Low-Cost Instrumentation

Battery-Powered Equipment

ATE

Features

♦ Ultra-Low Supply Current

230µA at V

= 3.6V

280µA at V

= 5.5V

♦ 300nA Low-Power Power-Down Mode

♦ Single 2.7V to 5.5V Supply Voltage

♦ Fast 400kHz I

C-Compatible 2-Wire Serial

Interface

♦ Schmitt-Trigger Inputs for Direct Interfacing to

Optocouplers

♦ Rail-to-Rail Output Buffer Amplifiers

♦ Three Software-Selectable Power-Down Output

Impedances

100kΩ, 1kΩ, and High Impedance

♦ Read-Back Mode for Bus and Data Checking

♦ Power-On Reset to Zero

♦ 10-Pin µMAX Package

MAX5842

Quad, 12-Bit, Low-Power, 2-Wire, Serial

Voltage-Output DAC

________________________________________________________________ Maxim Integrated Products 1

OUTD

OUTC

OUTB

OUTAGND

SCL

ADD

MAX5842

µMAX

TOP VIEW

REFSDA

Pin Configuration

Ordering Information

µC

SDA

SCL

SDA

REF

SCL

OUTA

OUTB

MAX5842

OUTC

OUTD

OUTB

OUTC

OUTD

OUTA

Typical Operating Circuit

19-2317; Rev 0; 1/02

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP

RANGE

PIN-

PACKAGE

ADDRESS

MAX5842LEUB -40

C to +85

C 10 µMAX 0111 10X

MAX5842MEUB -40

C to +85

C 10 µMAX 1011 10X

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

C is a trademark of Philips Corp.

MAX5842

Quad, 12-Bit, Low-Power, 2-Wire, Serial

Voltage-Output DAC

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +2.7V to +5.5V, GND = 0, V

REF

= V

, R

= 5kΩ, C

= 200pF, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are

at V

= +5V, T

= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

, SCL, SDA to GND............................................-0.3V to +6V

OUT_, REF, ADD to GND..............................-0.3V to V

+ 0.3V

Maximum Current into Any Pin............................................50mA

Continuous Power Dissipation (T

= +70°C)

10-Pin µMAX (derate 5.6mW above +70°C) .................444mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Maximum Junction Temperature .....................................+150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

STATIC ACCURACY (NOTE 2)

Resolution N 12 Bits

Integral Nonlinearity INL (Note 3) ±2 ±16 LSB

Differential Nonlinearity DNL Guaranteed monotonic (Note 3) ±1 LSB

Zero-Code Error ZCE Code = 000 hex, V

= 2.7V 6 40 mV

Zero-Code Error Tempco 2.3 ppm/

Gain Error GE Code = FFF hex -0.8 -3 %FSR

Gain-Error Tempco 0.26 ppm/

Power-Supply Rejection Ratio PSRR Code = FFF hex, V

= 4.5V to 5.5V 58.8 dB

DC Crosstalk 30 µV

REFERENCE INPUT

Reference Input Voltage Range V

REF

Reference Input Impedance 32 45 kΩ

Reference Current Power-down mode ±0.3 ±1 µA

DAC OUTPUT

Output Voltage Range No load (Note 4) 0 V

DC Output Impedance Code = 800 hex 1.2 Ω

= 5V, V

OUT

= full scale (short to GND) 42.2

Short-Circuit Current

= 3V, V

OUT

= full scale (short to GND) 15.1

= 5V 8

Wake-Up Time

= 3V 8

µs

DAC Output Leakage Current

Power-down mode = high impedance,

= 5.5V, V

OUT

_ = V

or GND

±0.1 ±1 µA

DIGITAL INPUTS (SCL, SDA)

Input High Voltage V

0.7 ✕

Input Low Voltage V

0.3 ✕

MAX5842

Quad, 12-Bit, Low-Power, 2-Wire, Serial

Voltage-Output DAC

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

= +2.7V to +5.5V, GND = 0, V

REF

= V

, R

= 5kΩ, C

= 200pF, T

= T

MIN

to T

MAX

, unless otherwise noted. Typical values are

at V

= +5V, T

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Hysteresis

0.05

Input Leakage Current Digital inputs = 0 or V

±0.1 ±1µA

Input Capacitance 6pF

DIGITAL OUTPUT (SDA)

Output Logic Low Voltage V

SINK

= 3mA 0.4 V

Three-State Leakage Current I

Digital inputs = 0 or V

±0.1 ±1µA

Three-State Output Capacitance 6pF

DYNAMIC PERFORMANCE

Voltage Output Slew Rate SR 0.5 V/µs

Voltage Output Settling Time

To 1/2LSB code 400 hex to C00 hex or C00

hex to 400 hex (Note 5)

412µs

Digital Feedthrough Code = 000 hex, digital inputs from 0 to V

0.2 nV-s

Digital-to-Analog Glitch Impulse

Major carry transition (code = 7FF hex to

800 hex and 800 hex to 7FF hex)

12 nV-s

DAC-to-DAC Crosstalk 2.4 nV-s

POWER SUPPLIES

Supply Voltage Range V

2.7 5.5 V

All digital inputs at 0 or V

= 3.6V 230 395

Supply Current with No Load I

All digital inputs at 0 or V

= 5.5V 280 420

µA

Power-Down Supply Current I

DDPD

All digital inputs at 0 or V

= 5.5V 0.3 1 µA

TIMING CHARACTERISTICS (FIGURE 1)

Serial Clock Frequency f

SCL

0 400 kHz

Bus Free Time Between STOP

and START Conditions

BUF

1.3 µs

START Condition Hold Time t

STA

0.6 µs

SCL Pulse Width Low t

LOW

1.3 µs

SCL Pulse Width High t

HIGH

0.6 µs

Repeated START Setup Time t

STA

0.6 µs

Data Hold Time t

DAT

0 0.9 µs

Data Setup Time t

DAT

100 ns

SDA and SCL Receiving Rise

Time

(Note 5) 0 300 ns

SDA and SCL Receiving Fall Time t

(Note 5) 0 300 ns

SDA Transmitting Fall Time t

(Note 5)

20 +

0.1C

250 ns

STOP Condition Setup Time t

STO

0.6 µs

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15

MAX5842LEUB+

Mfr. #:

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Manufacturer:

Maxim Integrated

Description:

Digital to Analog Converters - DAC 12-Bit 4Ch Precision DAC

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MAX5842LEUB+

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