max5523euat Maxim Integrated Products, Inc., max5523euat Datasheet

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max5523euat

Manufacturer Part Number
max5523euat
Description
Dual, Ultra-low-power, 10-bit, Voltage-output Dacs
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
The MAX5522–MAX5525 are dual, 10-bit, ultra-low-
power, voltage-output, digital-to-analog converters
(DACs) offering rail-to-rail buffered voltage outputs. The
DACs operate from a 1.8V to 5.5V supply and consume
less than 5µA, making the devices suitable for low-
power and low-voltage applications. A shutdown mode
reduces overall current, including the reference input
current, to just 0.18µA. The MAX5522–MAX5525 use a
3-wire serial interface that is compatible with SPI™,
QSPI™, and MICROWIRE™.
Upon power-up, the MAX5522–MAX5525 outputs are
driven to zero scale, providing additional safety for
applications that drive valves or for other transducers
that need to be off during power-up. The zero-scale
outputs enable glitch-free power-up.
The MAX5522 accepts an external reference input and
provides unity-gain outputs. The MAX5523 contains a
precision internal reference and provides a buffered
external reference output with unity-gain DAC outputs.
The MAX5524 accepts an external reference input and
provides force-sense outputs. The MAX5525 contains a
precision internal reference and provides a buffered
external reference output with force-sense DAC outputs.
The MAX5524/MAX5525 are available in a 4mm x 4mm
x 0.8mm, 12-pin, thin QFN package. The MAX5522/
MAX5523 are available in an 8-pin µMAX package. All
devices are guaranteed over the extended -40°C to
+85°C temperature range.
For 12-bit compatible devices, refer to the MAX5532–
MAX5535 data sheet. For 8-bit compatible devices,
refer to the MAX5512–MAX5515 data sheet.
19-3064; Rev 1; 12/04
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
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.
Portable Battery-Powered Devices
Instrumentation
Automatic Trimming and Calibration in Factory
or Field
Programmable Voltage and Current Sources
Industrial Process Control and Remote
Industrial Devices
Remote Data Conversion and Monitoring
Chemical Sensor Cell Bias for Gas Monitors
Programmable LCD Bias
________________________________________________________________ Maxim Integrated Products
General Description
Applications
10-Bit, Voltage-Output DACs
♦ Ultra-Low 5µA Supply Current
♦ Shutdown Mode Reduces Supply Current to
♦ Single +1.8V to +5.5V Supply
♦ Small 4mm x 4mm x 0.8mm Thin QFN Package
♦ Internal Reference Sources 8mA of Current
♦ Flexible Force-Sense-Configured Rail-to-Rail
♦ Fast 16MHz, 3-Wire, SPI-/QSPI-/MICROWIRE-
♦ TTL- and CMOS-Compatible Digital Inputs with
♦ Glitch-Free Outputs During Power-Up
Dual, Ultra-Low-Power,
*EP = Exposed paddle (internally connected to GND).
MAX5522EUA
MAX5523EUA
MAX5524ETC
MAX5525ETC
Pin Configurations continued at end of data sheet.
MAX5522EUA
MAX5523EUA
MAX5524ETC
MAX5525ETC
0.18µA (max)
(MAX5523/MAX5525)
Output Buffers
Compatible Serial Interface
Hysteresis
TOP VIEW
PART
PART
REFOUT(MAX5523)
REFIN(MAX5522)
Force sense
Force sense
SCLK
OUTPUTS
Unity gain
Unity gain
DIN
CS
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
1
2
3
4
Ordering Information
Pin Configurations
MAX5522
MAX5523
MAX
REFERENCE
Selector Guide
External
External
Internal
Internal
PIN-PACKAGE
8 µMAX
8 µMAX
12 Thin QFN-EP*
12 Thin QFN-EP*
7
5
8
6
OUTA
GND
V
OUTB
DD
Features
TOP MARK
AACK
AACL
1

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max5523euat Summary of contents

Page 1

Rev 1; 12/04 General Description The MAX5522–MAX5525 are dual, 10-bit, ultra-low- power, voltage-output, digital-to-analog converters (DACs) offering rail-to-rail buffered voltage outputs. The DACs operate from a 1.8V to 5.5V supply and consume less than 5µA, making the devices suitable ...

Page 2

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V DD OUTA, OUTB to GND .................................-0. FBA, FBB to GND .......................................-0. SCLK, DIN GND ..............................-0. REFIN, REFOUT to ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +1.8V to +5.5V, OUT_ unloaded PARAMETER SYMBOL Power-Supply Rejection Ratio REFERENCE INPUT (MAX5522/MAX5524) Reference-Input Voltage Range V Reference-Input Impedance R REFERENCE OUTPUT (MAX5523/MAX5525) Initial Accuracy V Output-Voltage Temperature V TEMPCO Coefficient Line Regulation ...

Page 4

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs ELECTRICAL CHARACTERISTICS (continued +1.8V to +5.5V, OUT_ unloaded PARAMETER SYMBOL DAC Power-Up Time Output Power-Up Glitch FB_ Input Current DIGITAL INPUTS (SCLK, DIN, CS) Input High Voltage Input Low Voltage Input ...

Page 5

TIMING CHARACTERISTICS (V = +4.5V to +5.5V MIN MAX PARAMETER TIMING CHARACTERISTICS (V = 4. Serial Clock Frequency DIN to SCLK Rise Setup Time DIN to SCLK Rise Hold ...

Page 6

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs (V = 5.0V 4.096V (MAX5522/MAX5524), VREF = 3.9V (MAX5523/MAX54525 REF SUPPLY CURRENT vs. SUPPLY VOLTAGE (MAX5522/MAX5524) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 1.5 2.0 2.5 3.0 ...

Page 7

V = 4.096V (MAX5522/MAX5524), VREF = 3.9V (MAX5523/MAX54525 REF INL vs. INPUT CODE ( 1.8V) DD REF 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 0 200 400 600 800 1000 ...

Page 8

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs (V = 5.0V 4.096V (MAX5522/MAX5524), VREF = 3.9V (MAX5523/MAX54525 REF DAC OUTPUT VOLTAGE vs. OUTPUT SOURCE CURRENT REF DD CODE = MIDSCALE ...

Page 9

V = 4.096V (MAX5522/MAX5524), VREF = 3.9V (MAX5523/MAX54525 REF REFERENCE OUTPUT VOLTAGE vs. REFERENCE OUTPUT CURRENT 3. 3.91 3.90 3.89 3.88 -500 2000 4500 7000 9500 12,000 14,500 REFERENCE OUTPUT CURRENT ...

Page 10

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs (V = 5.0V 4.096V (MAX5522/MAX5524), VREF = 3.9V (MAX5523/MAX54525 REF REFERENCE LOAD TRANSIENT (V = 5V) DD 200 s/div REFERENCE PSRR vs. FREQUENCY ...

Page 11

PIN MAX5522 MAX5523 MAX5524 — 4 — 4 — — — — — — — ...

Page 12

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs POWER- DOWN CONTROL CONTROL SCLK LOGIC DIN AND SHIFT CS REGISTER POWER- DOWN CONTROL CONTROL SCLK LOGIC DIN AND SHIFT CS REGISTER 12 ______________________________________________________________________________________ Functional Diagrams (continued 2-BIT REF PROGRAMMABLE BUF REFERENCE INPUT ...

Page 13

POWER- DOWN CONTROL CONTROL SCLK LOGIC DIN AND SHIFT CS REGISTER Detailed Description The MAX5522–MAX5525 dual, 10-bit, ultra-low-power, voltage-output DACs offer rail-to-rail buffered voltage outputs. The DACs operate from a 1.8V to 5.5V supply and require only 5µA (max) supply ...

Page 14

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs Table 1. Serial Write Data Format CONTROL MSB Sub-bits must be set to zero for proper operation. SCLK DIN CSW Figure 1. Timing Diagram ...

Page 15

Table 2. Serial-Interface Programming Commands CONTROL BITS INPUT DATA D9– XXXXXXXXXX 10-bit data 10-bit data — ...

Page 16

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs The MAX5522–MAX5525 feature two power modes to conserve power during idle periods. In normal opera- tion, the device is fully operational. In shutdown mode, the device is completely powered down, including the internal voltage reference ...

Page 17

Applications Information 1-Cell and 2-Cell Circuits See Figure 3 for an illustration of how to power the MAX5522–MAX5525 with either one lithium-ion battery or two alkaline batteries. The low current consumption of the devices make the MAX5522–MAX5525 ideal for battery-powered ...

Page 18

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs Voltage Biasing a Current-Output Transducer See the circuit in Figure 5 for an illustration of how to configure the MAX5524/MAX5525 to bias a current-out- put transducer. In Figure 5, the output voltage of the MAX5524/MAX5525 ...

Page 19

Layout Considerations Digital and AC transient signals coupling to GND can create noise at the output. Use proper grounding tech- niques, such as a multilayer board with a low-inductance ground plane. Wire-wrapped boards and sockets are not recommended. For optimum ...

Page 20

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs REF OUTA DAC FBA MAX5525 REF OUTB DAC FBB REFOUT BAND GAP Figure 11. Driven Two-Electrode Potentiostat Application 20 ______________________________________________________________________________________ Pin Configurations (continued) TOP VIEW TO ADC SENSOR CE TO ...

Page 21

For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs PACKAGE OUTLINE 12, 16, 20, 24L THIN QFN, 4x4x0.8mm Package Information ...

Page 22

Dual, Ultra-Low-Power, 10-Bit, Voltage-Output DACs (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.) 22 ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE 12, 16, 20, 24L THIN ...

Page 23

For the latest package outline information www.maxim-ic.com/packages ÿ 0.50±0.1 0.6±0.1 1 0.6±0.1 D TOP VIEW FRONT ...

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