Maxim MAX533BEEE, MAX533BCPE, MAX533AMJE, MAX533AEPE, MAX533AEEE Datasheet

...

19-1080; Rev 0; 6/96

2.7V, Low-Power, 8-Bit Quad DAC with Rail-to-Rail Output Buffers

_______________General Description

The MAX533 serial-input, voltage-output, 8-bit quad digital-to-analog converter (DAC) operates from a single +2.7V to +3.6V supply. Internal precision buffers swing rail to rail, and the reference input range includes both ground and the positive rail. The MAX533 features a 1µA shutdown mode.

The serial interface is double buffered: a 12-bit input shift register is followed by four 8-bit buffer registers and four 8-bit DAC registers. The 12-bit serial word consists of eight data bits and four control bits (for DAC selection and special programming commands). Both the input and DAC registers can be updated independently or simultaneously with a single software command. Two additional asynchronous control pins, LDAC and CLR, provide simultaneous updating or clearing of the input and DAC registers.

The interface is compatible with SPI™, QSPI™ (CPOL = CPHA = 0 or CPOL = CPHA = 1), and Microwire™. A buffered data output allows daisy chaining of serial devices.

In addition to 16-pin DIP and CERDIP packages, the MAX533 is available in a 16-pin QSOP that occupies the same area as an 8-pin SO.

________________________Applications

Digital Gain and Offset Adjustments Programmable Attenuators Programmable Current Sources Portable Instruments

__________________Pin Configuration

TOP VIEW

OUTB OUTA

REF

UPO

PDE

LDAC

CLR

DOUT

1 2 3 4 5 6 7 8

MAX533

DIP/QSOP

OUTC

OUTD

AGND



VDD DGND

12 11

DIN

SCLK

____________________________Features

♦ +2.7V to +3.6V Single-Supply Operation ♦ Ultra-Low Supply Current:

0.7mA while Operating 1µA in Shutdown Mode

♦ Ultra-Small 16-Pin QSOP Package ♦ Ground to V

Reference Input Range

♦ Output Buffer Amplifiers Swing Rail to Rail ♦ 10MHz Serial Interface, Compatible with SPI, QSPI

(CPOL = CPHA = 0 or CPOL = CPHA = 1), and Microwire

♦ Double-Buffered Registers for Synchronous

Updating

♦ Serial Data Output for Daisy Chaining ♦ Power-On Reset Clears Serial Interface and Sets

All Registers to Zero

♦ Software Shutdown ♦ Software-Programmable Logic Output ♦ Asynchronous Hardware Clear Resets All Internal

Registers to Zero

______________Ordering Information

PART

MAX533ACPE MAX533BCPE MAX533ACEE 0°C to +70°C MAX533BCEE 0°C to +70°C 16 QSOP MAX533BC/D 0°C to +70°C Dice* MAX533AEPE -40°C to +85°C 16 Plastic DIP MAX533BEPE -40°C to +85°C 16 Plastic DIP MAX533AEEE -40°C to +85°C 16 QSOP MAX533BEEE -40°C to +85°C 16 QSOP MAX533AMJE -55°C to +125°C 16 CERDIP** MAX533BMJE -55°C to +125°C 16 CERDIP**

*Dice are tested at TA= +25°C. **Contact factory for availability and processing to MIL-STD-883.

Functional Diagram appears at end of data sheet.

TEMP. RANGE PIN-PACKAGE

0°C to +70°C 0°C to +70°C

16 Plastic DIP 16 Plastic DIP 16 QSOP

INL

(LSB)

±1 ±2 ±1 ±2 ±2 ±1 ±2 ±1 ±2 ±1 ±2

MAX533

SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.

________________________________________________________________

Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

2.7V, Low-Power, 8-Bit Quad DAC with Rail-to-Rail Output Buffers

ABSOLUTE MAXIMUM RATINGS

VDDto DGND ..............................................................-0.3V, +6V

to AGND...............................................................-0.3V, +6V

Digital Input Voltage to DGND ....................................-0.3V, +6V

Digital Output Voltage to DGND....................-0.3V, (V

AGND to DGND..................................................................±0.3V

REF................................................................-0.3V, (V

OUT_ ...........................................................................-0.3V, V

MAX533

Maximum Current into Any Pin............................................50mA

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.

+ 0.3V) + 0.3V)

ELECTRICAL CHARACTERISTICS

(VDD= +2.7V to +3.6V, V Typical values are at V

STATIC ACCURACY

Integral Nonlinearity (Note 1)

Zero-Code-Error Supply Rejection

Zero-Code Temperature Coefficient

Full-Scale Error Supply Rejection

Full-Scale Temperature Coefficient

REFERENCE INPUTS

Input Voltage Range

DAC OUTPUTS

Output Voltage Range

= 2.5V, AGND = DGND = 0V, RL= 10kΩ, CL= 100pF, TA= T

REF

= +3V and TA= +25°C.)

MAX533A MAX533B Guaranteed monotonic (all codes) Code = 00 hex

Code = 00 hex, VDD= 2.7V to 3.6V

Code = 00 hex Code = FF hex mV±30Full-Scale Error Code = FF hex, VDD= 2.7V to 3.6V

Code = FF hex

(Note 2) (Note 3)

RL= open Code = FF hex, RLfrom 10kΩ to ∞

Continuous Power Dissipation (TA= +70°C)

Plastic DIP (derate 10.53mW/°C above +70°C) .........842mW

QSOP (derate 8.3mW/°C above +70°C).....................667mW

CERDIP (derate 10.00mW/°C above +70°C)..............800mW

Operating Temperature Ranges

MAX533 _ C_ E..................................................0°C to +70°C

MAX533 _ E_ E ...............................................-40°C to +85°C

MAX533 _ MJE .............................................-55°C to +125°C

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

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

to T

MIN

CONDITIONS

, unless otherwise noted.

MAX

UNITSMIN TYP MAXSYMBOLPARAMETER

±1 ±2

REF

Bits8Resolution LSBINL LSB±1.0DNLDifferential Nonlinearity (Note 1)

mV±20ZCEZero-Code Error

LSB1

µV/°C±10

LSB1

µV/°C±10

V0V kΩ322 460 598Input Resistance pF10Input Capacitance dB-60Channel-to-Channel Isolation dB-70AC Feedthrough

V0V

LSB0.25Load Regulation

2 _______________________________________________________________________________________

2.7V, Low-Power, 8-Bit Quad DAC with Rail-to-Rail Output Buffers

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +3.6V, V Typical values are at V

DIGITAL INPUTS

Input High Voltage Input Low Voltage Input Current Input Capacitance

DIGITAL OUTPUTS

Output High Voltage Output Low Voltage

DYNAMIC PERFORMANCE

Digital Feedthrough and Crosstalk

Signal-to-Noise Plus Distortion Ratio

POWER SUPPLIES

Power-Supply Voltage Supply Current

= 2.5V, AGND = DGND = 0V, RL= 10kΩ, CL= 100pF, TA= T

REF

= +3V and TA= +25°C.)

CONDITIONS

OH OL

SINAD

VIN= 0V or V (Note 4)

SOURCE

SINK

CODE = FF hex To 1/2LSB, from code 00 to code FF hex

(Note 5)

VREF = 0V, code 00 to code FF hex (Note 6) Code 80 hex to code 7F hex

REF

code = FF hex V

REF

MAX533C/E MAX533M

= TBDmA

= 1.6mA

= 2.5Vp-p at 1kHz, VDD= 3V,

= 2.5Vp-p at 10kHz = 0.5Vp-p, 3dB bandwidth

MIN

to T

, unless otherwise noted.

MAX

-70

-62

60Wideband Amplifier Noise

0.68 1.3

0.68 1.5

UNITSMIN TYP MAXSYMBOLPARAMETER

µV

MAX533

V0.7V

V0.3V µA±1.0I pF10C

VVDD- 0.5V

V0.4V

V/µs0.6Voltage-Output Slew Rate

µs6Output Settling Time

nV-s5 nV-s50Digital-to-Analog Glitch Impulse

kHz380Multiplying Bandwidth

RMS

V2.7 3.6V

µA110Shutdown Current

TIMING CHARACTERISTICS

(VDD= +2.7V to +3.6V, V Typical values are at V

VDDRise to CS Fall Setup Time (Note 4)

LDAC Pulse Width Low

CS Rise to LDAC Fall Setup

Time (Note 7)

CLR Pulse Width Low

CS Pulse Width High

= 2.5V, AGND = DGND = 0V, C

REF

= +3V and TA= +25°C.)

VDCS

LDAC

CLL

CLW

CSW

_______________________________________________________________________________________ 3

MAX533C/E MAX533M MAX533C/E MAX533M MAX533C/E MAX533M MAX533C/E MAX533M MAX533C/E MAX533M

= 100pF, TA= T

DOUT

CONDITIONS

MIN

to T

, unless otherwise noted.

MAX

40 20 50 25 40 50 40 20 50 25 90

100

UNITSMIN TYP MAXSYMBOLPARAMETER

50 60

µs

2.7V, Low-Power, 8-Bit Quad DAC with Rail-to-Rail Output Buffers

TIMING CHARACTERISTICS (continued)

(VDD= +2.7V to +3.6V, V Typical values are at V

PARAMETER SYMBOL MIN TYP MAX UNITS

SERIAL-INTERFACE TIMING

SCLK Clock Frequency (Note 8) f

MAX533

SCLK Pulse Width High t

SCLK Pulse Width Low t

CS Fall to SCLK Rise Setup Time

SCLK Rise to CS Rise Hold Time

DIN to SCLK Rise to Setup Time t DIN to SCLK Rise to Hold Time t

SCLK Rise to DOUT Valid Propagation Delay (Note 9)

SCLK Fall to DOUT Valid Propagation Delay (Note 10)

SCLK Rise to CS Fall Delay

CS Rise to SCLK Rise Setup Time

= 2.5V, AGND = DGND = 0V, C

REF

= +3V and TA= +25°C.)

CLK

CSS

CSH

DO1

DO2

CS0

CS1

MAX533C/E MAX533M MAX533C/E MAX533M MAX533C/E MAX533M MAX533C/E MAX533M

MAX533C/E MAX533M

MAX533M

MAX533M MAX533C/E MAX533M MAX533C/E MAX533M

= 100pF, TA= T

DOUT

CONDITIONS

MIN

to T

, unless otherwise noted.

MAX

40 50 40 50 40 50

0 ns

40 50

0 ns

40 50 40 50

8.3

200MAX533C/E 230 210MAX533C/E 250

MHz

Note 1: INL and DNL are measured with R Note 2: V Note 3: V

Note 4: Guaranteed by design, not production tested. Note 5: Output settling time is measured from the 50% point of the rising edge of CS to 1/2LSB of V Note 6: Digital crosstalk is defined as the glitch energy at any DAC output in response to a full-scale step change on any other

Note 7: If LDAC is activated prior to CS’s rising edge, it must stay low for t Note 8: When DOUT is not used. If DOUT is used, f Note 9: Serial data clocked out at SCLK’s rising edge (measured from 50% of the clock edge to 20% or 80% of V Note 10: Serial data clocked out at SCLK’s falling edge (measured from 50% of the clock edge to 20% or 80% of V

4 _______________________________________________________________________________________

or equal to the maximum offset specification to code FF hex (full scale). See

= 2.5Vp-p, 10kHz. Channel-to-channel isolation is measured by setting one DAC’s code to FF hex and setting all

REF

other DAC’s codes to 00 hex.

= 2.5Vp-p, 10kHz. DAC code = 00 hex.

REF

DAC.

referenced to ground. Nonlinearity is measured from the first code that is greater than

max is 4MHz, due to the SCLK to DOUT propagation delay.

CLK

LDAC

DAC Linearity and Voltage Offset

’s final value.

OUT

or longer after CS goes high.

section.

2.7V, Low-Power, 8-Bit Quad DAC with Rail-to-Rail Output Buffers

__________________________________________Typical Operating Characteristics

(VDD= +3V, TA = +25°C, unless otherwise noted.)

MAX533

DAC ZERO-CODE OUTPUT VOLTAGE vs.

1.50

1.25

1.00

0.75

0.50

0.25

DAC ZERO-CODE OUTPUT VOLTAGE (V)

SHUTDOWN SUPPLY CURRENT (µA)

OUTPUT SINK CURRENT

DAC CODE = 00 HEX LOAD TO V



VDD = V

= 3.0V

REF



12345

DAC OUTPUT SINK CURRENT (mA)

SHUTDOWN SUPPLY CURRENT vs.



-55

TEMPERATURE

VDD = +5.0V 

VDD = +3.0V 

-35 -15 52545 TEMPERATURE (°C)

-30

-40

-50

THD + NOISE (dB)

-60

-70



VDD = V

_______________________________________________________________________________________

DAC FULL-SCALE OUTPUT VOLTAGE vs.

5.0

MAX533-TOC1

4.5

4.0 

3.5

= 5.0V

REF

678

65 85

105

THD + NOISE AT DAC OUTPUT vs.

REFERENCE AMPLITUDE

VDD = +3.0V

= SINE WAVE

REF

CENTERED AT 1.2V DAC C0DE = FF HEX 80kHz LOWPASS FILTER

0.5 1.0 1.5

REFERENCE AMPLITUDE (V

3.0 

2.5

DAC FULL-SCALE OUTPUT VOLTAGE (V)

2.0

1000

MAX533-TOC4

800



600

400



SUPPLY CURRENT (µA)

200

REF

= 20kHz

= 1kHz

p-p

125

OUTPUT SOURCE CURRENT

VDD = V

DAC CODE = FF HEX LOAD TO GND

VDD = V

246810

DAC OUTPUT SOURCE CODE (mA)

SUPPLY CURRENT vs.

REFERENCE VOLTAGE (V

ALL DAC CODES = FF HEX

ALL DAC CODES = 00 HEX

0.5 1.0 1.5 REFERENCE VOLTAGE (V)

MAX533-TOC7

2.0

)

1000

= 5.0V

REF

= +3.0V)

2.0

THD + NOISE (dB)

MAX533-TOC2

800



600

400



SUPPLY CURRENT (µA)

= 3.0V

2.5

-20

-30

-40

-50

-60

-70 1 0.1 101 100

200

3.0

VDD = +3.0V V CENTERED AT 1.2V DAC CODE = FF HEX 500kHz LOWPASS FILTER

-55

1000

MAX533-TOC5

800



600

400



SUPPLY CURRENT (µA)

200

THD + NOISE AT DAC OUTPUT vs.

REFERENCE FREQUENCY

= SINE WAVE

REF

= 1V

REF

P-P

FREQUENCY (kHz)

SUPPLY CURRENT vs.

TEMPERATURE

DAC CODE = FF HEX

VDD = +5.0V

= +4.5V

REF

DAC CODE = 00 HEX

-35 -15 52545 TEMPERATURE (°C)

SUPPLY CURRENT vs.

REFERENCE VOLTAGE (V

ALL DAC CODES = FF HEX

ALL DAC CODES = 00 HEX

0.5 1.0 1.5

2.0

REFERENCE VOLTAGE (V)

= 2V

REF

p-p

= 0.5V

REF

p-p

MAX533-TOC3

VDD = +3.0V

= +2.5V

REF

65 85

3.0

2.5

3.5

MAX533-TOC8

105

= +5.0V)

4.0

4.5

125

MAX533-TOC6

5.0

+ 11 hidden pages

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