Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - DA converter (DAC) TQFN 12

General Description

The MAX5532–MAX5535 are dual, 12-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 MAX5532–MAX5535 use a

3-wire serial interface that is compatible with SPI™,

QSPI™, and MICROWIRE™.

Upon power-up, the MAX5532–MAX5535 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 MAX5532 accepts an external reference input and

provides unity-gain outputs. The MAX5533 contains a

precision internal reference and provides a buffered

external reference output with unity-gain DAC outputs.

The MAX5534 accepts an external reference input and

provides force-sense outputs. The MAX5535 contains a

precision internal reference and provides a buffered

external reference output with force-sense DAC outputs.

The MAX5534/MAX5535 are available in a 4mm x 4mm

x 0.8mm, 12-pin, thin QFN package. The MAX5532/

MAX5533 are available in an 8-pin µMAX

package. All

devices are guaranteed over the extended -40°C to

+85°C temperature range.

For 10-bit compatible devices, refer to the MAX5522–

MAX5525 data sheet. For 8-bit compatible devices,

refer to the MAX5512–MAX5515 data sheet.

Applications

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

Features

♦ Ultra-Low 5µA Supply Current

♦ Shutdown Mode Reduces Supply Current to

0.18µA (max)

♦ Single +1.8V to +5.5V Supply

♦ Small 4mm x 4mm x 0.8mm Thin QFN Package

♦ Internal Reference Sources 8mA of Current

(MAX5533/MAX5535)

♦ Flexible Force-Sense-Configured Rail-to-Rail

Output Buffers

♦ Fast 16MHz, 3-Wire, SPI-/QSPI-/MICROWIRE-

Compatible Serial Interface

♦ TTL- and CMOS-Compatible Digital Inputs with

Hysteresis

♦ Glitch-Free Outputs During Power-Up

MAX5532–MAX5535

Dual, Ultra-Low-Power,

12-Bit, Voltage-Output DACs

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3062; Rev 1; 1/07

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.

*EP = Exposed paddle (internally connected to GND).

EVALUATION KIT

AVAILABLE

Pin Configurations continued at end of data sheet.

PART TEMP RANGE PIN-PACKAGE

PKG

CODE

MAX5532EUA -40°C to +85°C 8 µMAX U8C-3

MAX5533EUA -40°C to +85°C 8 µMAX U8C-3

MAX5534ETC -40°C to +85°C 12 Thin QFN-EP* T1244-4

MAX5535ETC -40°C to +85°C 12 Thin QFN-EP* T1244-4

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Selector Guide

PART OUTPUTS REFERENCE TOP MARK

MAX5532EUA Unity gain External —

MAX5533EUA Unity gain Internal —

MAX5534ETC Force sense External AACM

MAX5535ETC Force sense Internal AACN

OUTA

GND

OUTBREFIN(MAX5532)

REFOUT(MAX5533)

DIN

SCLK

MAX5532

MAX5533

μMAX

TOP VIEW

Pin Configurations

Summary of content (24 pages)

PAGE 1
9-3062; Rev 1; 1/07 KIT ATION EVALU E L B AVAILA Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs Features The MAX5532–MAX5535 are dual, 12-bit, ultra-lowpower, 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 lowpower and low-voltage applications. A shutdown mode reduces overall current, including the reference input current, to just 0.18µA.
PAGE 2
MAX5532–MAX5535 Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs ABSOLUTE MAXIMUM RATINGS VDD to GND ..............................................................-0.3V to +6V OUTA, OUTB to GND .................................-0.3V to (VDD + 0.3V) FBA, FBB to GND .......................................-0.3V to (VDD + 0.3V) SCLK, DIN, CS to GND ..............................-0.3V to (VDD + 0.3V) REFIN, REFOUT to GND ............................-0.3V to (VDD + 0.
PAGE 3
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs (VDD = +1.8V to +5.5V, OUT_ unloaded, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN Gain-Error Temperature Coefficient Power-Supply Rejection Ratio PSRR 1.8V ≤ VDD ≤ 5.5V TYP MAX UNITS ±4 ppm/°C 85 dB REFERENCE INPUT (MAX5532/MAX5534) Reference-Input Voltage Range VREFIN Reference-Input Impedance RREFIN 0 Normal operation VDD 4.1 In shutdown V MΩ 2.
PAGE 4
MAX5532–MAX5535 Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs ELECTRICAL CHARACTERISTICS (continued) (VDD = +1.8V to +5.5V, OUT_ unloaded, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 5
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs (VDD = +1.8V to +5.5V, OUT_ unloaded, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V POWER REQUIREMENTS Supply Voltage Range VDD 1.8 MAX5533/MAX5535 Supply Current (Note 9) IDD MAX5532/MAX5534 Standby Supply Current Shutdown Supply Current IDDSD IDDPD MAX5533/MAX5535 (Note 9) VDD = 5V 7.0 8.0 VDD = 3V 6.4 8.0 VDD = 1.8V 7.0 8.0 VDD = 5V 3.8 5.
PAGE 6
MAX5532–MAX5535 Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs TIMING CHARACTERISTICS (VDD = +1.8V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 10 MHz TIMING CHARACTERISTICS (VDD = 1.8V to 5.
PAGE 7
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs SUPPLY CURRENT vs. TEMPERATURE (MAX5532/MAX5534) 4.5 3.5 3.0 2.5 2.0 1.5 3.5 3.0 2.5 2.0 1.5 8 7 6 5 4 3 1.0 1.0 2 0.5 0.5 1 0 0 0 -40 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 -15 10 35 60 85 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 SUPPLY VOLTAGE (V) TEMPERATURE (°C) SUPPLY VOLTAGE (V) SUPPLY CURRENT vs. TEMPERATURE (MAX5533/MAX5535) SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE (MAX5532/MAX5534) SHUTDOWN SUPPLY CURRENT vs.
PAGE 8
Typical Operating Characteristics (continued) (VDD = 5.0V, VREF = 4.096V (MAX5532/MAX5534), VREF = 3.9V (MAX5533/MAX5535), TA = +25°C, unless otherwise noted.) 1 0.15 -1 -2 DNL (LSB) 0 INL (LSB) 0 0.20 -1 -2 0.10 0.05 -3 -3 0 -4 -4 -0.05 -5 -0.10 -5 500 1000 1500 2000 2500 3000 3500 4000 4500 DIGITAL INPUT CODE DIGITAL INPUT CODE DIGITAL INPUT CODE DNL vs. INPUT CODE (VDD = VREF = 5V) GAIN ERROR CHANGE vs. TEMPERATURE OFFSET VOLTAGE vs. TEMPERATURE 0.8 0.10 0.05 0 -0.
PAGE 9
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs DAC OUTPUT VOLTAGE vs. OUTPUT SOURCE CURRENT DAC OUTPUT VOLTAGE (V) VDD = 5V 2 VDD = 3V VREF = VDD CODE = MIDSCALE 4.5 1 4.0 3.5 VDD = 5V 3.0 2.5 VOUT 200mV/div VDD = 3V 2.0 1.5 1.0 VDD = 1.8V 0 0.001 0.010 0.100 0.5 1 10 0 0.001 100 VDD = 1.8V 0.01 0.1 1 10 100 OUTPUT SOURCE CURRENT (mA) OUTPUT SINK CURRENT (mA) OUTPUT LARGE-SIGNAL STEP RESPONSE (VDD = 5V, VREF = 3.9V) OUTPUT MINIMUM SERIES RESISTANCE vs.
PAGE 10
Typical Operating Characteristics (continued) (VDD = 5.0V, VREF = 4.096V (MAX5532/MAX5534), VREF = 3.9V (MAX5533/MAX5535), TA = +25°C, unless otherwise noted.) REFERENCE OUTPUT VOLTAGE vs. SUPPLY VOLTAGE REFERENCE OUTPUT VOLTAGE vs. REFERENCE OUTPUT CURRENT 3.91 3.90 3.89 MAX5532 toc29 VDD = 5V REFERENCE LINE-TRANSIENT RESPONSE (VREF = 1.2V) MAX5532 toc30 1.21750 NO LOAD 1.21748 REFERENCE OUTPUT VOLTAGE (V) MAX5532 toc28 3.
PAGE 11
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs REFERENCE LOAD TRANSIENT (VDD = 5V) REFERENCE PSRR vs. FREQUENCY MAX5532 toc35 VREF 500mV/div 3.9V MAX5532 toc36 REFOUT SINK CURRENT 100μA/div POWER-SUPPLY REJECTION RATIO (dB) 80 VDD = 1.8V 70 60 50 40 30 20 10 0 0.01 200μs/div 0.1 1 10 100 1000 FREQUENCY (kHz) REFERENCE PSRR vs. FREQUENCY REFERENCE OUTPUT NOISE (0.1Hz TO 10Hz) (VDD = 1.8V, VREF = 1.
PAGE 12
MAX5532–MAX5535 Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs Pin Description PIN NAME FUNCTION MAX5532 MAX5533 MAX5534 MAX5535 1 1 1 1 CS 2 2 2 2 SCLK Serial-Interface Clock Input 3 3 3 3 DIN Serial-Interface Data Input 4 — 4 — REFIN — 4 — 4 REFOUT 5, 11 Active-Low Digital Chip-Select Input Reference Input Reference Output N.C. No Connection. Leave N.C. inputs unconnected (floating) or connected to GND.
PAGE 13
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs VDD POWERDOWN CONTROL 2-BIT PROGRAMMABLE REFERENCE REF BUF REFOUT MAX5533 INPUT REGISTER SCLK DIN CS DAC REGISTER 12-BIT DAC CONTROL LOGIC AND SHIFT REGISTER OUTA DAC REGISTER INPUT REGISTER 12-BIT DAC OUTB GND VDD POWERDOWN CONTROL MAX5534 DAC REGISTER INPUT REGISTER SCLK DIN CS REFIN 12-BIT DAC CONTROL LOGIC AND SHIFT REGISTER OUTA FBA DAC REGISTER INPUT REGISTER 12-BIT DAC OUTB FBB GND __________________________________________
PAGE 14
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs MAX5532–MAX5535 Functional Diagrams (continued) VDD POWERDOWN CONTROL 2-BIT PROGRAMMABLE REFERENCE REF BUF REFOUT MAX5535 INPUT REGISTER SCLK DIN CS DAC REGISTER 12-BIT DAC CONTROL LOGIC AND SHIFT REGISTER OUTA FBA DAC REGISTER INPUT REGISTER 12-BIT DAC OUTB FBB GND Detailed Description The MAX5532–MAX5535 dual, 12-bit, ultra-low-power, voltage-output DACs offer rail-to-rail buffered voltage outputs. The DACs operate from a 1.8V to 5.
PAGE 15
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs CONTROL DATA BITS MSB C3 LSB C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 tCH SCLK tCL tDS C3 DIN tCS0 C2 C1 D0 tDH tCSH tCSS CS tCSW tCS1 Figure 1. Timing Diagram SCLK DIN 1 C3 2 C2 3 C1 CONTROL BITS 4 C0 5 D11 6 D10 7 D9 8 D8 9 D7 10 D6 11 D5 12 D4 13 D3 14 D2 15 D1 16 D0 DATA BITS COMMAND EXECUTED CS Figure 2.
PAGE 16
MAX5532–MAX5535 Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs Table 2. Serial-Interface Programming Commands CONTROL BITS INPUT DATA FUNCTION C3 C2 C1 C0 D11–D0 0 0 0 0 XXXXXXXXXXXX 0 0 0 1 12-bit data Load input register A from shift register; DAC registers unchanged; DAC outputs unchanged. 0 0 1 0 12–bit data Load input register B from shift register; DAC registers unchanged; DAC outputs unchanged. 0 0 1 1 — Command reserved. Do not use.
PAGE 17
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs Shutdown Mode The MAX5532–MAX5535 feature a software-programmable shutdown mode that reduces the supply current and the reference input current to 0.18µA (max). Writing an input control word with control bits C[3:0] = 1110 (Table 2) places the device in shutdown mode. In shutdown, the MAX5532/MAX5534 reference input and DAC output buffers go high impedance.
PAGE 18
MAX5532–MAX5535 Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs Applications Information 1-Cell and 2-Cell Circuits See Figure 3 for an illustration of how to power the MAX5532–MAX5535 with either one lithium-ion battery or two alkaline batteries. The low current consumption of the devices make the MAX5532–MAX5535 ideal for battery-powered applications.
PAGE 19
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs See the circuit in Figure 5 for an illustration of how to configure the MAX5534/MAX5535 to bias a current-output transducer. In Figure 5, the output voltage of the MAX5534/MAX5535 is a function of the voltage drop across the transducer added to the voltage drop across the feedback resistor R. Unipolar Output Figure 6 shows the MAX5534 in a unipolar output configuration with unity gain. Table 4 lists the unipolar output codes.
PAGE 20
MAX5532–MAX5535 Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs V 255 - NPOT × NDAC VOUT = REFIN 1+ 4096 255 ( 10kΩ ) NDAC IS THE NUMERIC VALUE OF THE DAC INPUT CODE. NPOT IS THE NUMERIC VALUE OF THE POT INPUT CODE. 10kΩ 1.8V ≤ VDD ≤ 5.5V V+ REFIN DAC VOUT VOUT VOUT DAC OUT_ REFIN H CS1 1/2 MAX5534 MAX5401 SOT-POT 100kΩ V- 1/2 MAX5534 FB FB_ W SCLK 5PPM/°C RATIOMETRIC TEMPCO DIN CS2 L Figure 9. Software-Configurable Output Gain Figure 7.
PAGE 21
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs REF OUTA DAC TO ADC IF TOP VIEW RF FBA WE CS 1 SCLK 2 DIN 3 FBA N.C. OUTA 12 11 10 9 GND 8 VDD 7 OUTB MAX5535 SENSOR REF MAX5534 MAX5535 CE DAC OUTB 4 REFIN(MAX5534) REFOUT(MAX5535) FBB BAND GAP REFOUT TO ADC 5 6 N.C. FBB THIN QFN CL Figure 11. Driven Two-Electrode Potentiostat Application Chip Information TRANSISTOR COUNT: 10,688 PROCESS: BiCMOS Revision History Pages changed at Rev 1: 1, 6, 14, 21, 24.
PAGE 22
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 24L QFN THIN.EPS MAX5532–MAX5535 Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.
PAGE 23
Dual, Ultra-Low-Power, 12-Bit, Voltage-Output DACs PACKAGE OUTLINE, 12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm 21-0139 E 2 ______________________________________________________________________________________ 2 23 MAX5532–MAX5535 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.
PAGE 24
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 4X S 8 8 INCHES DIM A A1 A2 b E Ø0.50±0.1 H c D e E H 0.6±0.1 L 1 1 α 0.6±0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.014 0.010 0.007 0.005 0.120 0.116 0.0256 BSC 0.120 0.116 0.198 0.188 0.026 0.016 6° 0° 0.0207 BSC 8LUMAXD.