Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - DA converter (DAC) SOT 23 6

19-2126; Rev 3; 8/13

MAX5712

Low-Power, 12-Bit, Rail to Rail

Voltage-Output Serial DAC in SOT23

For pricing, delivery, and ordering information, please contact Maxim Direct

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

General Description

The MAX5712 is a small footprint, low-power, 12-bit digi-

tal-to-analog converter (DAC) that operates from a single

+2.7V to +5.5V supply. The MAX5712 on-chip precision

output amplifier provides rail-to-rail output swing. Drawing

only 85µA supply current at +3V, the MAX5712 is ideally

suited for portable battery-operated equipment.

The MAX5712 utilizes a 3-wire serial-interface that is com-

patible with SPI/QSPI™/MICROWIRE

and DSP-interface

standards. All logic inputs are CMOS-logic compatible

and buffered with Schmitt triggers to allow direct interfac-

ing to optocouplers. The MAX5712 incorporates a power-

on reset (POR) circuit that ensures the DAC begins in a

zero-volt-state upon power-up. A power-down mode that

reduces current consumption to 0.3µA may be initiated

through a software command.

The MAX5712 is available in a small 6-pin SOT23 pack-

age. For dual and quad 12-bit versions, see the MAX5722

and MAX5742 data sheets. For single, dual, and quad

10-bit versions, see the MAX5711, MAX5721 and

MAX5741 data sheets. The MAX5712 is specified over

the automotive temperature range of -40°C to +125°C.

Applications

Automatic Tuning

Gain and Offset Adjustment

Power Amplifier Control

Process Control I/O Boards

Battery-Powered Equipment

VCO Control

Features

o Wide -40°C to +125°C Operating Temperature

Range

o Low 85µA Supply Current

o Ultra Low 0.3µA Power-Down Supply Current

o Single +2.7V to +5.5V Supply Voltage

o Fast 20MHz 3-Wire SPI/QSPI/MICROWIRE and

DSP-Compatible Serial Interface

o Schmitt-Triggered Inputs for Direct Interfacing to

Optocouplers

o Rail-to-Rail Output Buffer

o Tiny 6-Pin SOT23 Package

o Power-On Reset to 0V

o Three Software-Selectable Power-Down Output

Impedances (100kΩ, 1kΩ, Hi-Z)

DAC

INPUT

CONTROL

LOGIC

12-BIT

DAC

REF+

GND

OUT

100kΩ 1kΩ

CS SCLK DIN

REF-

OUTPUT

BUFFER

POWER-ON

RESET

POWER-DOWN

CONTROL

LOGIC

MAX5712

Functional Diagram

Ordering Information

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

QSPI is a trademark of Motorola, Inc.

MICROWIRE is a registered trademark of National Semiconductor, Corp.

PART TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX5712EUT+T -40°C to +85°C 6 SOT23 ABCQ

MAX5712AUT+T -40°C to +125°C 6 SOT23 AAUD

Pin Configuration appears at end of data sheet.

Summary of content (10 pages)

PAGE 1
MAX5712 Low-Power, 12-Bit, Rail to Rail Voltage-Output Serial DAC in SOT23 General Description Features The MAX5712 is a small footprint, low-power, 12-bit digital-to-analog converter (DAC) that operates from a single +2.7V to +5.5V supply. The MAX5712 on-chip precision output amplifier provides rail-to-rail output swing. Drawing only 85µA supply current at +3V, the MAX5712 is ideally suited for portable battery-operated equipment.
PAGE 2
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 ABSOLUTE MAXIMUM RATINGS VDD to GND ..............................................................-0.3V to +6V OUT, SCLK, DIN, CS to GND ......................-0.3V to (VDD+ 0.3V) Maximum Current into Any Pin .........................................±50mA Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 9.1mW/°C above +70°C)...........727mW Operating Temperature Range .........................
PAGE 3
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 ELECTRICAL CHARACTERISTICS (continued) (VDD = +2.7V to +5.5V, GND = 0, RL = 5kΩ, CL = 200pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VDD = +5V. TA = +25°C) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V All digital inputs at 0 or VDD, VDD = +3.6V 85 150 All digital inputs at 0 or VDD, VDD = +5.5V 105 187 All digital inputs at 0 or VDD, VDD = +5.5V 0.
PAGE 4
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) 0.6 DNL (LSB) 4 0 -4 VDD = +3V -8 0.6 0.4 0.4 0.2 0.2 0.0 0.0 -0.2 -0.2 -0.4 -0.4 -0.6 -0.6 -12 -0.8 -0.8 -16 -1.0 -1.0 512 1024 1536 2048 2560 3072 3584 4096 INTEGRAL NONLINEARITY vs. CODE, TA = +125°C DIFFERENTIAL NONLINEARITY vs. CODE, TA = +125°C TOTAL UNADJUSTED ERROR vs. CODE, TA = +125°C 0.8 0.6 0 0.8 0.6 0.4 0.
PAGE 5
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE 80 CODE = 000 60 40 20 0 200 150 100 3.2 3.7 4.2 4.7 5.2 800 700 VDD = +5V 600 500 400 300 VDD = +3V 200 50 100 0 2.7 SUPPLY VOLTAGE (V) 3.7 4.2 4.7 SUPPLY VOLTAGE (V) FULL-SCALE SETTLING TIME (VDD = +5V) FULL-SCALE SETTLING TIME (VDD = +5V) 3.2 0 5.
PAGE 6
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.
PAGE 7
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 Detailed Description down and upon wake-up, the DAC output is restored to its pre-power-down voltage. The MAX5712 voltage output, 12-bit DAC, offers a full 12-bit performance in a small 6-pin SOT23 package. The SOT23 footprint is less than 9mm2. The MAX5712 has less than 1LSB differential nonlinearity error, ensuring monotonic performance.
PAGE 8
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 Table 1.
PAGE 9
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
PAGE 10
MAX5712 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 Revision History REVISION NUMBER REVISION DATE 0 8/01 Initial release — 1 10/01 Updated Electrical Characteristics 2 2 11/04 Updated Package Information 9 3 8/13 Updated Ordering Information 1 DESCRIPTION PAGES CHANGED Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied.