Datasheet

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

General Description

The MAX5512–MAX5515 are dual, 8-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 con-

sume 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 MAX5512–MAX5515

use a 3-wire serial interface that is compatible with

SPI™, QSPI™, and MICROWIRE™.

Upon power-up, the MAX5512–MAX5515 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 MAX5512 accepts an external reference input and

provides unity-gain outputs. The MAX5513 contains a

precision internal reference and provides a buffered

external reference output with unity-gain DAC outputs.

The MAX5514 accepts an external reference input and

provides force-sense outputs. The MAX5515 contains a

precision internal reference and provides a buffered

external reference output with force-sense DAC outputs.

The MAX5514/MAX5515 are available in a 4mm x 4mm

x 0.8mm, 12-pin, thin QFN package. The MAX5512/

MAX5513 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 12-bit compatible devices,

refer to the MAX5532–MAX5535 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

(MAX5513/MAX5515)

♦ 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

MAX5512–MAX5515

Dual, Ultra-Low-Power,

8-Bit, Voltage-Output DACs

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3066; Rev 0; 1/04

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.

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

Pin Configurations continued at end of data sheet.

PART TEMP RANGE PIN-PACKAGE

MAX5512EUA -40°C to +85°C 8 µMAX

MAX5513EUA -40°C to +85°C 8 µMAX

MAX5514ETC -40°C to +85°C 12 Thin QFN-EP*

MAX5515ETC -40°C to +85°C 12 Thin QFN-EP*

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

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

Selector Guide

PART OUTPUTS REFERENCE TOP MARK

MAX5512EUA Unity gain External —

MAX5513EUA Unity gain Internal —

MAX5514ETC Force sense External AACI

MAX5515ETC Force sense Internal AACJ

OUTA

GND

OUTBREFIN(MAX5512)

REFOUT(MAX5513)

DIN

SCLK

MAX5512

MAX5513

µMAX

TOP VIEW

Pin Configurations

Summary of content (23 pages)

PAGE 1
9-3066; Rev 0; 1/04 Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs For 10-bit compatible devices, refer to the MAX5522– MAX5525 data sheet. For 12-bit compatible devices, refer to the MAX5532–MAX5535 data sheet.
PAGE 2
MAX5512–MAX5515 Dual, Ultra-Low-Power, 8-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, 8-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 REFERENCE INPUT (MAX5512/MAX5514) Reference-Input Voltage Range Reference-Input Impedance VREFIN RREFIN 0 Normal operation VDD 4.1 In shutdown V MΩ 2.
PAGE 4
MAX5512–MAX5515 Dual, Ultra-Low-Power, 8-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.) PARAMETER SYMBOL CONDITIONS TYP MAX UNITS 3 Coming out of shutdown (MAX5512/MAX5514) VDD = 1.8V 3.8 Coming out of standby (MAX5513/MAX5515) VDD = 1.8V to VDD = 5V 0.
PAGE 5
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs MAX5512–MAX5515 TIMING CHARACTERISTICS (VDD = +4.5V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 16.7 MHz TIMING CHARACTERISTICS (VDD = 4.5V to 5.
PAGE 6
Typical Operating Characteristics (VDD = 5.0V, VREF = 4.096V (MAX5512/MAX5514), VREF = 3.9V (MAX5513/MAX5515), TA = +25°C, unless otherwise noted.) 4.5 3.5 3.0 2.5 2.0 1.5 3.5 3.0 2.5 2.0 1.5 9 8 7 6 5 4 3 1.0 1.0 2 0.5 0.5 1 0 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0 -40 -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 (MAX5513/MAX5515) SHUTDOWN SUPPLY CURRENT vs.
PAGE 7
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs 0.05 0 -0.05 -0.05 INL (LSB) 0 -0.10 0.012 0.010 0.008 DNL (LSB) 0.05 0.014 MAX5512 toc11 0.10 MAX5512 toc10 0.10 INL (LSB) DNL vs. INPUT CODE (VDD = VREF = 1.8V) INL vs. INPUT CODE (VDD = VREF = 5V) MAX5512 toc12 INL vs. INPUT CODE (VDD = VREF = 1.8V) -0.10 0.006 0.004 0.002 -0.15 -0.15 -0.20 -0.20 -0.25 -0.25 -0.004 -0.30 -0.006 0 -0.30 100 150 200 250 300 50 100 150 200 250 0 300 150 200 DNL vs.
PAGE 8
Typical Operating Characteristics (continued) (VDD = 5.0V, VREF = 4.096V (MAX5512/MAX5514), VREF = 3.9V (MAX5513/MAX5515), TA = +25°C, unless otherwise noted.) DAC OUTPUT VOLTAGE vs. OUTPUT SOURCE CURRENT DAC OUTPUT VOLTAGE vs. OUTPUT SINK CURRENT 3 VDD = 5V 2 VDD = 3V VREF = VDD CODE = MIDSCALE 4.5 DAC OUTPUT VOLTAGE (V) 4 1 MAX5512 toc21 MAX5512 toc20 VREF = VDD CODE = MIDSCALE OUTPUT LARGE-SIGNAL STEP RESPONSE (VDD = 1.8V, VREF = 1.2V) 5.0 MAX5512 toc19 4.0 3.5 VDD = 5V 3.0 2.
PAGE 9
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs REFERENCE OUTPUT VOLTAGE vs. REFERENCE OUTPUT CURRENT 3.91 3.90 3.89 1.21750 NO LOAD 1.21748 REFERENCE LINE-TRANSIENT RESPONSE (VREF = 1.2V) MAX5512 toc30 MAX5512 toc29 REFERENCE OUTPUT VOLTAGE (V) VDD = 5V REFERENCE OUTPUT VOLTAGE (V) MAX5512 toc28 3.92 REFERENCE OUTPUT VOLTAGE vs. SUPPLY VOLTAGE 1.21746 2.8V VDD 1.21744 1.21742 1.8V 1.21740 VREF 500mV/div 1.21738 1.21736 1.21734 1.21732 3.88 1.
PAGE 10
Typical Operating Characteristics (continued) (VDD = 5.0V, VREF = 4.096V (MAX5512/MAX5514), VREF = 3.9V (MAX5513/MAX5515), TA = +25°C, unless otherwise noted.) REFERENCE LOAD TRANSIENT (VDD = 5V) REFERENCE PSRR vs. FREQUENCY MAX5512 toc35 VREF 500mV/div 3.9V MAX5512 toc36 POWER-SUPPLY REJECTION RATIO (dB) 80 REFOUT SINK CURRENT 100µA/div 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.
PAGE 11
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs PIN NAME FUNCTION MAX5512 MAX5513 MAX5514 MAX5515 1 1 1 1 CS 2 2 2 2 SCLK Serial-Interface Clock Input 3 3 3 3 DIN Serial-Interface Data Input Active-Low Digital Chip-Select Input 4 — 4 — REFIN — 4 — 4 REFOUT Reference Input — — 5, 11 5, 11 N.C. — — 6 6 FBB 5 5 7 7 OUTB 6 6 8 8 VDD Power Input. Connect VDD to a 1.8V to 5.5V power supply. Bypass VDD to GND with a 0.1µF capacitor.
PAGE 12
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs MAX5512–MAX5515 Functional Diagrams (continued) VDD POWERDOWN CONTROL 2-BIT PROGRAMMABLE REFERENCE REF BUF REFOUT MAX5513 INPUT REGISTER SCLK DIN CS DAC REGISTER 8-BIT DAC CONTROL LOGIC AND SHIFT REGISTER OUTA DAC REGISTER INPUT REGISTER 8-BIT DAC OUTB GND VDD POWERDOWN CONTROL MAX5514 DAC REGISTER INPUT REGISTER SCLK DIN CS REFIN 8-BIT DAC CONTROL LOGIC AND SHIFT REGISTER OUTA FBA DAC REGISTER INPUT REGISTER 8-BIT DAC OUTB FBB GND
PAGE 13
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs VDD POWERDOWN CONTROL 2-BIT PROGRAMMABLE REFERENCE REF BUF REFOUT MAX5515 INPUT REGISTER SCLK DIN CS DAC REGISTER 8-BIT DAC CONTROL LOGIC AND SHIFT REGISTER OUTA FBA DAC REGISTER INPUT REGISTER 8-BIT DAC OUTB FBB GND Detailed Description The MAX5512–MAX5515 dual, 8-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 current.
PAGE 14
MAX5512–MAX5515 Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs Table 1. Serial Write Data Format CONTROL DATA BITS MSB C3 LSB C2 C1 C0 D7 D6 D5 D4 D3 D2 D1 D0 S3 S2 S1 Sub-bits S3 to S0 must be set to zero for proper operation. tCH SCLK tCL tDS C3 DIN tCS0 C2 C1 S0 tDH tCSH tCSS CS tCSW tCS1 Figure 1.
PAGE 15
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs INPUT DATA SUB-BITS C3 CONTROL BITS C2 C1 C0 D7–D0 S3, S2, S1, S0 0 0 0 0 XXXXXXXX 0000 No operation; command is ignored. FUNCTION 0 0 0 1 8-bit data 0000 Load input register A from shift register; DAC registers unchanged; DAC outputs unchanged. 0 0 1 0 8-bit data 0000 Load input register B from shift register; DAC registers unchanged; DAC outputs unchanged. 0 0 1 1 — — Command reserved. Do not use.
PAGE 16
MAX5512–MAX5515 Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs Power Modes The MAX5512–MAX5515 feature two power modes to conserve power during idle periods. In normal operation, the device is fully operational. In shutdown mode, the device is completely powered down, including the internal voltage reference in the MAX5513/MAX5515. The MAX5513/MAX5515 also offer a standby mode in which all circuitry is powered down except the internal voltage reference.
PAGE 17
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs 1-Cell and 2-Cell Circuits See Figure 3 for an illustration of how to power the MAX5512–MAX5515 with either one lithium-ion battery or two alkaline batteries. The low current consumption of the devices make the MAX5512–MAX5515 ideal for battery-powered applications. Programmable Current Source See the circuit in Figure 4 for an illustration of how to configure the MAX5514/MAX5515 as a programmable current source for driving an LED.
PAGE 18
MAX5512–MAX5515 Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs Voltage Biasing a Current-Output Transducer See the circuit in Figure 5 for an illustration of how to configure the MAX5514/MAX5515 to bias a current-output transducer. In Figure 5, the output voltage of the MAX5514/MAX5515 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 MAX5514 in a unipolar output configuration with unity gain.
PAGE 19
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs ( REFIN ) NDAC IS THE NUMERIC VALUE OF THE DAC INPUT CODE. NPOT IS THE NUMERIC VALUE OF THE POT INPUT CODE. DAC VOUTA VOUT1 R2 FBA 1.8V ≤ VDD ≤ 5.5V V R2 × NDACA VOUT1 = REFIN 1+ 256 R1 ( ) REFIN DAC VOUT NDACA IS THE NUMERIC VALUE OF THE DAC A INPUT CODE. R1 1/2 MAX5514 VOUT H CS1 1/2 MAX5514 DAC VOUTB VOUT2 VREFIN × NDACB VOUT2 = 256 FBB NDACB IS THE NUMERIC VALUE OF THE DAC B INPUT CODE.
PAGE 20
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs MAX5512–MAX5515 Pin Configurations (continued) 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 MAX5515 SENSOR REF MAX5514 MAX5515 CE DAC OUTB 4 REFIN(MAX5514) REFOUT(MAX5515) FBB BAND GAP REFOUT TO ADC 5 6 N.C. FBB THIN QFN CL Figure 11.
PAGE 21
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs 24L QFN THIN.EPS PACKAGE OUTLINE 12,16,20,24L QFN THIN, 4x4x0.8 mm 21-0139 B 1 2 ______________________________________________________________________________________ 21 MAX5512–MAX5515 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.
PAGE 22
MAX5512–MAX5515 Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs 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.) PACKAGE OUTLINE 12,16,20,24L QFN THIN, 4x4x0.
PAGE 23
Dual, Ultra-Low-Power, 8-Bit, Voltage-Output DACs E 0.50–0.1 8 INCHES DIM A A1 A2 b H c D e E H 0.6–0.1 1 L 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.EPS 4X S 8 MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 5.03 4.78 0.41 0.66 0 6 0.