max5520etc Maxim Integrated Products, Inc., max5520etc Datasheet

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max5520etc

Manufacturer Part Number
max5520etc
Description
+1.8v To +5.5v, Ultra-low-power, 10-bit, Voltage-output Dacs
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
The MAX5520/MAX5521 are single, 10-bit, ultra-low-
power, voltage-output, digital-to-analog converters
(DACs) offering Rail-to-Rail
The DACs operate from a 1.8V to 5.5V supply and con-
sume less than 6µA, making them desirable for low-
power and low-voltage applications. A shutdown mode
reduces overall current, including the reference input
current, to just 0.18µA. The MAX5520/MAX5521 use a
3-wire serial interface that is compatible with SPI™,
QSPI™, and MICROWIRE™.
At power-up, the MAX5520/MAX5521 outputs are dri-
ven to zero scale, providing additional safety for appli-
cations that drive valves or for other transducers that
must be off during power-up. The zero-scale outputs
enable glitch-free power-up.
The MAX5520 accepts an external reference input. The
MAX5521 contains an internal reference and provides
an external reference output. Both devices have force-
sense-configured output buffers.
The MAX5520/MAX5521 are available in a 4mm x 4mm x
0.8mm, 12-pin, thin QFN package and are guaranteed
over the extended -40°C to +85°C temperature range.
For 12-bit compatible devices, refer to the MAX5530/
MAX5531 data sheet. For 8-bit compatible devices,
refer to the MAX5510/MAX5511 data sheet.
19-3065; Rev 0; 1/04
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
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.
MAX5520ETC
MAX5521ETC
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 Liquid Crystal Display (LCD) Bias
PART
________________________________________________________________ Maxim Integrated Products
+1.8V to +5.5V, Ultra-Low-Power, 10-Bit,
REFERENCE
General Description
External
Internal
®
buffered voltage outputs.
Selector Guide
Applications
TOP MARK
AACQ
AACR
*EP = Exposed paddle (internally connected to GND).
MAX5520ETC
MAX5521ETC
Single +1.8V to +5.5V Supply
Ultra-Low 6µA Supply Current
Shutdown Mode Reduces Supply Current to
0.18µA (max)
Small 4mm x 4mm x 0.8mm Thin QFN Package
Flexible Force-Sense-Configured Rail-to-Rail
Output Buffers
Internal Reference Sources 8mA of Current
(MAX5521)
Fast 16MHz 3-Wire SPI-/QSPI-/MICROWIRE-
Compatible Serial Interface
TTL- and CMOS-Compatible Digital Inputs with
Hysteresis
Glitch-Free Outputs During Power-Up
Voltage-Output DACs
TOP VIEW
PART
SCLK
DIN
CS
REFOUT(MAX5521)
REFIN (MAX5520)
1
2
3
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
FB
12
4
THIN QFN
MAX5520
MAX5521
N.C.
Pin Configuration
N.C.
11
5
OUT
N.C.
10
6
12 Thin QFN-EP*
12 Thin QFN-EP*
PIN-PACKAGE
9
8
7
Features
GND
V
N.C.
DD
1

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max5520etc Summary of contents

Page 1

... Internal Reference Sources 8mA of Current (MAX5521) Fast 16MHz 3-Wire SPI-/QSPI-/MICROWIRE- Compatible Serial Interface TTL- and CMOS-Compatible Digital Inputs with Hysteresis Glitch-Free Outputs During Power-Up PART MAX5520ETC MAX5521ETC *EP = Exposed paddle (internally connected to GND). Applications TOP VIEW TOP MARK AACQ AACR ...

Page 2

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

Page 3

Ultra-Low-Power, 10-Bit, ELECTRICAL CHARACTERISTICS (continued +1.8V to +5.5V, OUT unloaded PARAMETER SYMBOL Power-Supply Rejection Ratio REFERENCE INPUT (MAX5520) Reference-Input Voltage Range V Reference-Input Impedance R REFERENCE OUTPUT (MAX5521) Initial Accuracy V Output-Voltage Temperature ...

Page 4

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 V Input ...

Page 5

Ultra-Low-Power, 10-Bit, TIMING CHARACTERISTICS (V = +4.5V to +5.5V MIN MAX PARAMETER SYMBOL TIMING CHARACTERISTICS (V = 4.5V TO 5.5V) DD Serial Clock Frequency DIN to SCLK Rise Setup Time ...

Page 6

Ultra-Low-Power, 10-Bit, Voltage-Output DACs (V = 5.0V 4.096V (MAX5520 REF SUPPLY CURRENT vs. SUPPLY VOLTAGE (MAX5521 1.5 2.0 2.5 3.0 3.5 ...

Page 7

Ultra-Low-Power, 10-Bit 5.0V 4.096V (MAX5520 REF DNL vs. INPUT CODE ( 5V) DD REF 0.04 0.03 0.02 0.01 0 -0.01 -0.02 -0.03 0 200 400 600 800 ...

Page 8

Ultra-Low-Power, 10-Bit, Voltage-Output DACs (V = 5.0V 4.096V (MAX5520 REF OUTPUT LARGE-SIGNAL STEP RESPONSE ( 3.9V) DD REF MAX5520 toc19 V OUT 500mV/div 200µs/div MAJOR CARRY OUTPUT VOLTAGE ...

Page 9

Ultra-Low-Power, 10-Bit 5.0V 4.096V (MAX5520 REF REFERENCE LINE-TRANSIENT RESPONSE (V = 1.2V) REF 100µs/div REFERENCE LOAD TRANSIENT (V = 1.8V) DD 200µs/div REFERENCE LOAD TRANSIENT (V = 1.8V) DD 200µs/div ...

Page 10

Ultra-Low-Power, 10-Bit, Voltage-Output DACs (V = 5.0V 4.096V (MAX5520 REF REFERENCE PSRR vs. FREQUENCY 1. 0.01 0 FREQUENCY ...

Page 11

Ultra-Low-Power, 10-Bit, PIN NAME MAX5520 MAX5521 SCLK 3 3 DIN 4 — REFIN — 4 REFOUT N. GND ...

Page 12

Ultra-Low-Power, 10-Bit, Voltage-Output DACs POWER- DOWN CONTROL CONTROL SCLK LOGIC DIN AND SHIFT CS REGISTER Detailed Description The MAX5520/MAX5521 single, 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 ...

Page 13

Ultra-Low-Power, 10-Bit, Table 1. Serial Write Data Format CONTROL MSB Sub-bits S1 and S0 must be set to zero for proper operation. SCLK DIN CS t CSW Figure 1. Timing Diagram SCLK ...

Page 14

Ultra-Low-Power, 10-Bit, Voltage-Output DACs Table 2. Serial-Interface Programming Commands CONTROL BITS INPUT DATA D9– XXXXXXXXXX 10-bit data ...

Page 15

Ultra-Low-Power, 10-Bit, The MAX5520/MAX5521 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 16

Ultra-Low-Power, 10-Bit, Voltage-Output DACs Applications Information 1-Cell and 2-Cell Circuit See Figure 3 for an illustration of how to power the MAX5520/MAX5521 with either one lithium-ion battery or two alkaline batteries. The low current consumption of the ...

Page 17

Ultra-Low-Power, 10-Bit, DAC REFIN MAX5520 V × N REFIN DAC I = LED 1024 × THE NUMERIC VALUE OF THE DAC INPUT CODE. DAC Figure 4. Programmable Current Source Driving an LED DAC REFIN ...

Page 18

Ultra-Low-Power, 10-Bit, Voltage-Output DACs Power Supply and Bypassing Bypass the power supply with a 0.1µF capacitor to GND. Minimize lengths to reduce lead inductance. If noise becomes an issue, use shielding and/or ferrite beads to increase isolation. ...

Page 19

Ultra-Low-Power, 10-Bit, 1.8V ≤ V ≤ 5.5V DD REFIN DAC CS1 MAX5520 FB SCLK DIN CS2 Figure 10. Software-Configurable Output Gain Chip Information TRANSISTOR COUNT: 10,688 PROCESS: BiCMOS ______________________________________________________________________________________ Voltage-Output DACs VOUT V OUT H MAX5401 SOT-POT ...

Page 20

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 go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other ...

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