max5712 Maxim Integrated Products, Inc., max5712 Datasheet

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max5712

Manufacturer Part Number
max5712
Description
Max5712 12-bit, Low-power, Rail-to-rail Voltage-output Serial Dac In Sot23
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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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-inter-
face standards. All logic inputs are CMOS-logic
compatible and buffered with Schmitt triggers to allow
direct interfacing to optocouplers. The MAX5712 incorpo-
rates 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.
19-2126; Rev 2; 11/04
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.
Automatic Tuning
Gain and Offset Adjustment
Power Amplifier Control
Process Control I/O Boards
Battery-Powered Equipment
VCO Control
________________________________________________________________ Maxim Integrated Products
General Description
CS
Voltage-Output Serial DAC in SOT23
REGISTER
CONTROL
INPUT
LOGIC
SCLK
DAC
Applications
DIN
12-Bit, Low-Power, Rail-to-Rail
POWER-DOWN
V
REF+
DD
CONTROL
12-BIT
LOGIC
DAC
GND
REF-
♦ Wide -40°C to +125°C Operating Temperature
♦ Low 85µA Supply Current
♦ Ultra Low 0.3µA Power-Down Supply Current
♦ Single +2.7V to +5.5V Supply Voltage
♦ Fast 20MHz 3-Wire SPI/QSPI/MICROWIRE and
♦ Schmitt-Triggered Inputs for Direct Interfacing to
♦ Rail-to-Rail Output Buffer
♦ Tiny 6-Pin SOT23 Package
♦ Power-On Reset to 0V
♦ Three Software-Selectable Power-Down Output
Pin Configuration appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
MAX5712EUT-T
MAX5712AUT-T -40°C to +125°C
Range
DSP-Compatible Serial Interface
Optocouplers
Impedances (100kΩ, 1kΩ, Hi-Z)
OUTPUT
BUFFER
PART
POWER-ON
RESET
-40°C to +85°C
TEMP RANGE
Ordering Information
100kΩ
Functional Diagram
MAX5712
1kΩ
6 SOT23-6
6 SOT23-6
PACKAGE
OUT
PIN-
Features
MARK
ABCQ
AAUD
TOP
1

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max5712 Summary of contents

Page 1

... 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 ...

Page 2

Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V DD OUT, SCLK, DIN GND ......................-0. Maximum Current into Any Pin .........................................±50mA Continuous Power Dissipation (T = +70°C) A ...

Page 3

Voltage-Output Serial DAC in SOT23 ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V, GND = 5kΩ +25°C) A PARAMETER SYMBOL POWER REQUIREMENTS Supply Voltage Range V Supply Current with No-Load I Power-Down ...

Page 4

Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23 (T = +25°C, unless otherwise noted.) A INTEGRAL NONLINEARITY vs. CODE -40° + + -12 -16 ...

Page 5

... DIGITAL-TO-ANALOG GLITCH IMPULSE ( SCLK 5V/div V OUT CODE 800 HEX 1V/div TO 7FF HEX R C 500ns/div MAX5712 toc18 V SCLK 5V/div V OUT 1V/div CODE 400 HEX TO C00 HEX R = 5kΩ 200pF L = +5V) MAX5712 toc21 V OUT 10mV/div = 5kΩ ...

Page 6

... Serial-Data Input 4 SCLK Serial-Clock Input CS 5 Active Low Chip-Select Input 6 OUT DAC Output Voltage 6 _______________________________________________________________________________________ Typical Operating Characteristics (continued) = +5V) MAX5712 toc22 V OUT 10mV/div = 5kΩ 200pF L FUNCTION CLOCK FEEDTHROUGH (V = +5V) DD MAX5712 toc23 V SCLK 2V/div V OUT 1mV/div R = 5kΩ 200pF L 500ns/div Pin Description ...

Page 7

... DAC output is restored to its pre-power-down voltage The MAX5712 The MAX5712 has a POR circuit to set the DACs output to zero when V unwanted DAC output voltages will not occur immedi- ately following a system start-up, such as after a loss of power. Upon initial power-up, an internal power-on- ...

Page 8

... X X Digital Inputs and Interface Logic The 3-wire digital interface for the MAX5712 is compati- ble with SPI, QSPI, MICROWIRE, and DSP. The three digital inputs (CS, DIN, and SCLK) load the digital input serially into the DAC. All of the digital inputs include Schmitt-trigger buffers to accept slow-transition inter- faces ...

Page 9

Voltage-Output Serial DAC in SOT23 (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry ...

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