Rainbow Electronics MAX5531 User Manual

General Description

The MAX5530/MAX5531 are single, 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 6µA, making them desirable for lowpower and low-voltage applications. A shutdown mode reduces overall current, including the reference input current, to just 0.18µA. The MAX5530/MAX5531 use a 3-wire serial interface that is compatible with SPI™, QSPI™, and MICROWIRE™.

At power-up, the MAX5530/MAX5531 outputs are driven to zero scale, providing additional safety for applications that drive valves or for other transducers that must be off during power-up. The zero-scale outputs enable glitchfree power-up.

The MAX5530 accepts an external reference input. The MAX5531 contains an internal reference and provides an external reference output. Both devices have forcesense-configured output buffers.

The MAX5530/MAX5531 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 10-bit compatible devices, refer to the MAX5520/ MAX5521 data sheet. For 8-bit compatible devices, refer to the MAX5510/MAX5511 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 Liquid Crystal Display (LCD) Bias

Features

♦ Ultra-Low 6µA 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 ♦ Flexible Force-Sense-Configured Rail-to-Rail

Output Buffers

♦ Internal Reference Sources 8mA of Current

(MAX5531)

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

Compatible Serial Interface

♦ TTL- and CMOS-Compatible Digital Inputs with

Hysteresis

♦ Glitch-Free Outputs During Power-Up

MAX5530/MAX5531

Ultra-Low-Power, 12-Bit,

Voltage-Output DACs

________________________________________________________________ Maxim Integrated Products 1

12FB11

N.C.10OUT

N.C.6N.C.

2SCLK

7DIN

GND

N.C.

MAX5530 MAX5531

REFIN (MAX5530)

REFOUT(MAX5531)

THIN QFN

TOP VIEW

Pin Configuration

Ordering Information

Selector Guide

19-3063; 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.

PART REFERENCE TOP MARK

MAX5530ETC External AACS MAX5531ETC Internal AACT

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

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

PART TEMP RANGE PIN-PACKAGE

MAX5530ETC -40°C to +85°C 12 Thin QFN-EP* MAX5531ETC -40°C to +85°C 12 Thin QFN-EP*

MAX5530/MAX5531

Ultra-Low-Power, 12-Bit, Voltage-Output DACs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VDD= +1.8V to +5.5V, OUT unloaded, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

VDDto GND..............................................................-0.3V to +6V

OUT to GND ...............................................-0.3V to (V

+ 0.3V)

FB to GND ..................................................-0.3V to (V

+ 0.3V)

SCLK, DIN,

CS to GND ..............................-0.3V to (V

+ 0.3V)

REFIN, REFOUT to GND ............................-0.3V to (V

+ 0.3V)

Continuous Power Dissipation (T

= +70°C)

Thin QFN (derate 16.9mW/°C above +70°C..............1349mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Junction Temperature..................................................... +150°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

STATIC ACCURACY (MAX5530 EXTERNAL REFERENCE)

Resolution N 12 Bits

VDD = 5V, V

REF

= 4.096V ±4 ±8

Integral Nonlinearity (Note 1) INL

= 1.8V, V

REF

= 1.024V ±4 ±8

LSB

Guaranteed monotonic, V

= 5V, V

REF

= 4.096V

±1

Differential Nonlinearity (Note 1) DNL

Guaranteed monotonic, V

= 1.8V, V

REF

= 1.024V

±1

LSB

VDD = 5V, V

REF

= 4.096V ±1

Offset Error (Note 2) V

VDD = 1.8V, V

REF

= 1.024V ±1

Offset-Error Temperature Drift ±2

µV/°C

VDD = 5V, V

REF

= 4.096V ±2 ±4

Gain Error (Note 3) GE

= 1.8V, V

REF

= 1.024V ±2 ±4

LSB

Gain-Error Temperature Coefficient

±4

ppm/°C

Power-Supply Rejection Ratio PSRR 1.8V ≤ VDD ≤ 5.5V 85 dB

STATIC ACCURACY (MAX5531 INTERNAL REFERENCE)

Resolution N 12 Bits

VDD = 5V, V

REF

= 3.9V ±4 ±8

Integral Nonlinearity (Note 1) INL

= 1.8V, V

REF

= 1.2V ±4 ±8

LSB

Guaranteed monotonic, V

= 5V, V

REF

= 3.9V

±1

Differential Nonlinearity (Note 1) DNL

Guaranteed monotonic, V

= 1.8V, V

REF

= 1.2V

±1

LSB

VDD = 5V, V

REF

= 3.9V ±1

Offset Error (Note 2) V

VDD = 1.8V, V

REF

= 1.2V ±1

Offset-Error Temperature Drift ±2

µV/°C

VDD = 5V, V

REF

= 3.9V ±2 ±4

Gain Error (Note 3) GE

= 1.8V, V

REF

= 1.2V ±2 ±4

LSB

Gain-Error Temperature Coefficient

±4

ppm/°C

±0.2

±20 ±20

MAX5530/MAX5531

Ultra-Low-Power, 12-Bit,

Voltage-Output DACs

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +1.8V to +5.5V, OUT unloaded, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

PARAMETER

CONDITIONS

UNITS

Power-Supply Rejection Ratio PSRR 1.8V ≤ VDD ≤ 5.5V 85 dB

REFERENCE INPUT (MAX5530)

Reference-Input Voltage Range V

REFIN

Normal operation 4.1 MΩ

Reference-Input Impedance R

REFIN

In shutdown 2.5 GΩ

REFERENCE OUTPUT (MAX5531)

No external load, VDD = 1.8V No external load, VDD = 2.5V No external load, VDD = 3V

Initial Accuracy

No external load, VDD = 5V

Output-Voltage Temperature Coefficient

TA = -40°C to +85°C (Note 4) 12 30

ppm/°C

Line Regulation V

REFOUT

< VDD - 200mV (Note 5) 2 200 µV/V

0 ≤ I

REFOUT

≤ 1mA, sourcing, VDD = 1.8V,

REF

= 1.2V

0.3 2

0 ≤ I

REFOUT

≤ 8mA, sourcing, VDD = 5V,

REF

= 3.9V

0.3 2

Load Regulation

-150µA ≤ I

REFOUT

≤ 0, sinking 0.2

µV/µA

0.1Hz to 10Hz, V

REFOUT

= 3.9V

10Hz to 10kHz, V

REFOUT

= 3.9V

0.1Hz to 10Hz, V

REFOUT

= 1.2V 50

Output Noise Voltage

10Hz to 10kHz, V

REFOUT

= 1.2V

µV

P-P

VDD = 5V 30

Short-Circuit Current (Note 6)

= 1.8V 14

Capacitive Load Stability Range

(Note 7)

Thermal Hysteresis (Note 8)

ppm

REFOUT unloaded, VDD = 5V 5.4

Reference Power-Up Time (from Shutdown)

REFOUT unloaded, V

= 1.8V 4.4

Long-Term Stability

ppm/

1khrs

DAC OUTPUT (OUT)

Capacitive Driving Capability C

VDD = 5V, V

OUT

set to full scale, OUT

shorted to GND, source current

VDD = 5V, V

OUT

set to 0V, OUT shorted to

, sink current

VDD = 1.8V, V

OUT

set to full scale, OUT

shorted to GND, source current

Short-Circuit Current (Note 6)

= 1.8V, V

OUT

set to 0V, OUT shorted to

, sink current

SYMBOL

REFOUT

TEMPCO

MIN TYP MAX

1.197 1.214 1.231

1.913 1.940 1.967

2.391 2.425 2.459

3.828 3.885 3.941

150 600

450

0 to 10

200

1000

MAX5530/MAX5531

Ultra-Low-Power, 12-Bit, Voltage-Output DACs

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +1.8V to +5.5V, OUT unloaded, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

= 5V 3

Coming out of shutdown (MAX5530)

3.8

DAC Power-Up Time

Coming out of standby (MAX5531)

= 1.8V

to 5.5V

0.4

Output Power-Up Glitch CL = 100pF 10 mV FB_ Input Current 10 pA

DIGITAL INPUTS (SCLK, DIN, CS)

4.5V ≤ VDD ≤ 5.5V 2.4

2.7V < VDD ≤ 3.6V 2.0Input High Voltage V

1.8V ≤ VDD ≤ 2.7V 0.7 x V

D D

4.5V ≤ VDD ≤ 5.5V 0.8

2.7V < VDD ≤ 3.6V 0.6Input Low Voltage V

1.8V ≤ VDD ≤ 2.7V

Input Leakage Current I

(Note 9)

µA

Input Capacitance C

10 pF

DYNAMIC PERFORMANCE

Voltage-Output Slew Rate SR Positive and negative (Note 10) 10

V/ms

Voltage-Output Settling Time

0.1 to 0.9 of full scale to within 0.5 LSB (Note 10)

µs

VDD = 5V 80

0.1Hz to 10Hz 55

VDD = 5V

Output Noise Voltage

10Hz to 10kHz

µV

P-P

POWER REQUIREMENTS

Supply Voltage Range V

1.8 5.5 V VDD = 5V 2.6 4 VDD = 3V 2.6 4MAX5530

3.6 5 VDD = 5V 5.3 7.0 VDD = 3V 4.8 7.0

Supply Current (Note 9) I

MAX5531

5.4 7.0

µA

VDD = 5V 3.3 4.5 VDD = 3V 2.8 4.0Standby Supply Current I

DDSD

(Note 9)

2.4 3.5

µA

Shutdown Supply Current I

DDPD

(Note 9)

µA

= 1.8V

VDD = 1.8V

VDD = 1.8V 476

VDD = 1.8V

0.3 x V

±0.05 ±0.5

660

620

0.05 0.25

MAX5530/MAX5531

Ultra-Low-Power, 12-Bit,

Voltage-Output DACs

_______________________________________________________________________________________ 5

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

TIMING CHARACTERISTICS (VDD = 4.5V TO 5.5V)

Serial Clock Frequency f

SCLK

MHz

DIN to SCLK Rise Setup Time t

15 ns

DIN to SCLK Rise Hold Time t

0ns

SCLK Pulse-Width High t

24 ns

SCLK Pulse-Width Low t

24 ns

CS Pulse-Width High t

CSW

100 ns

SCLK Rise to CS Rise Hold Time

CSH

0ns

CS Fall to SCLK Rise Setup Time

CSS

20 ns

SCLK Fall to CS Fall Setup t

CSO

0ns

CS Rise to SCK Rise Hold Time t

CS1

20 ns

TIMING CHARACTERISTICS

(VDD= +4.5V to +5.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

TIMING CHARACTERISTICS

(VDD= +1.8V to +5.5V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

Note 1: Linearity is tested within codes 96 to 4080. Note 2: Offset is tested at code 96. Note 3: Gain is tested at code 4095. FB is connected to OUT. Note 4: Guaranteed by design. Not production tested. Note 5: V

must be a minimum of 1.8V.

Note 6: Outputs can be shorted to V

or GND indefinitely, provided that the package power dissipation is not exceeded.

Note 7: Optimal noise performance is at 2nF load capacitance. Note 8: Thermal hysteresis is defined as the change in the initial +25°C output voltage after cycling the device from T

MAX

to T

MIN

Note 9: All digital inputs at V

or GND.

Note 10: Load = 10kΩ in parallel with 100pF, V

= 5V, V

REF

= 4.096V (MAX5530) or V

REF

= 3.9V (MAX5531).

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

TIMING CHARACTERISTICS (VDD = 1.8V TO 5.5V)

Serial Clock Frequency f

SCLK

010

MHz

DIN to SCLK Rise Setup Time t

24 ns

DIN to SCLK Rise Hold Time t

0 ns

SCLK Pulse-Width High t

40 ns

SCLK Pulse-Width Low t

40 ns

CS Pulse-Width High t

CSW

SCLK Rise to CS Rise Hold Time

CSH

0 ns

CS Fall to SCLK Rise Setup Time

CSS

30 ns

SCLK Fall to CS Fall Setup t

CSO

0 ns

CS Rise to SCK Rise Hold Time t

CS1

30 ns

16.7

150

MAX5530/MAX5531

Ultra-Low-Power, 12-Bit, Voltage-Output DACs

6 _______________________________________________________________________________________

Typical Operating Characteristics

= 5.0V, V

REF

= 4.096V (MAX5530), V

REF

= 3.9V (MAX5531), TA = +25°C, unless otherwise noted.)

SUPPLY CURRENT vs. SUPPLY VOLTAGE

(MAX5531)

MAX5530 toc01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (µA)

5.55.04.0 4.52.5 3.0 3.52.0

1.5 6.0

SUPPLY CURRENT vs. TEMPERATURE

(MAX5531)

MAX5530 toc02

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

603510-15

-40 85

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE (MAX5531)

MAX5530 toc03

TEMPERATURE (°C)

SHUTDOWN SUPPLY CURRENT (nA)

603510-15

100

1000

0.1

-40 85

STANDBY SUPPLY CURRENT

vs. TEMPERATURE (MAX5531)

MAX5530 toc04

TEMPERATURE (°C)

STANDBY SUPPLY CURRENT (µA)

603510-15

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

-40 85

REF

= 3.9V

REF

= 2.4V

REF

= 1.9V

REF

= 1.2V

SUPPLY CURRENT

vs. CLOCK FREQUENCY

MAX5530 toc05

FREQUENCY (kHz)

SUPPLY CURRENT (µA)

1000010001001010.1

100

1000

0.01 100000

CS = LOGIC LOW CODE = 0

VDD = 5V

VDD = 1.8V

SUPPLY CURRENT

vs. LOGIC INPUT VOLTAGE

MAX5530 toc06

LOGIC INPUT VOLTAGE (V)

SUPPLY CURRENT (mA)

4.54.03.0 3.51.0 1.5 2.0 2.50.5

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

0 5.0

ALL DIGITAL INPUTS SHORTED TOGETHER

INL vs. INPUT CODE (V

= V

REF

= 1.8V)

MAX5530 toc07

DIGITAL INPUT CODE

INL (LSB)

4000350030002500200015001000500

-4

-3

-2

-1

-5 0 4500

INL vs. INPUT CODE

= V

REF

= 5V)

MAX5530 toc08

DIGITAL INPUT CODE

INL (LSB)

4000350030002500200015001000500

-4

-3

-2

-1

-5 04500

DNL vs. INPUT CODE

= V

REF

= 1.8V)

MAX5530 toc09

DIGITAL INPUT CODE

DNL (LSB)

4000350030002500200015001000500

-0.05

0.05

0.10

0.15

0.20

0.25

-0.10 04500

+ 13 hidden pages