Rainbow Electronics MAX510 User Manual

19-0155; Rev 2; 1/96

Quad, Serial 8-Bit DACs

with Rail-to-Rail Outputs

_______________General Description

The MAX509/MAX510 are quad, serial-input, 8-bit voltage-output digital-to-analog converters (DACs). They operate with a single +5V supply or dual ±5V supplies. Internal, precision buffers swing rail-to-rail. The reference input range includes both supply rails.

The MAX509 has four separate reference inputs, allowing each DAC's full-scale range to be set independently. 20-pin DIP, SSOP, and SO packages are available. The MAX510 is identical to the MAX509 except it has two reference inputs, each shared by two DACs. The MAX510 is housed in space-saving 16-pin DIP and SO packages.

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. A 12-bit serial word is used to

____________________________Features

♦ Single +5V or Dual ±5V Supply Operation ♦ Output Buffer Amplifiers Swing Rail-to-Rail ♦ Reference Input Range Includes Both Supply Rails ♦ Calibrated Offset, Gain, and Linearity (1LSB TUE) ♦ 10MHz Serial Interface, Compatible with SPI, QSPI

(CPOL = CPHA = 0) 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

______________Ordering Information

load data into each register. Both input and DAC registers can be updated independently or simultaneously with single software commands. Two additional asynchronous control pins provide simultaneous updating (LDAC) or clearing (CLR) of input and DAC registers.

The interface is compatible with MicrowireTMand SPI/ QSPITM. All digital inputs and outputs are TTL/CMOS compatible. A buffered data output provides for readback or daisy-chaining of serial devices.

_______________Functional Diagrams

CLR

DOUT

LDAC

12-BIT SHIFT

SR

CONTROL

CS DIN

Functional Diagrams continued at end of data sheet.

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

DGND

INPUT REG A

INPUT REG B

INPUT REG C

INPUT REG D

MAX509

DAC

REG A

DAC

REG B

DAC

REG C

DAC

REG D

AGND

DECODE

CONTROL

SCLK REFC

REFAREFB

OUTA

DAC A

OUTB

DAC B

OUTC

DAC C

OUTD

DAC D

REFD

PART TEMP. RANGE PIN-PACKAGE

MAX509ACPP

0°C to +70°C 20 Plastic DIP MAX509BCPP 0°C to +70°C 20 Plastic DIP MAX509ACWP 0°C to +70°C 20 Wide SO MAX509BCWP 20 Wide SO ±1 1/2

0°C to +70°C MAX509ACAP 0°C to +70°C 20 SSOP ±1 MAX509BCAP 0°C to +70°C 20 SSOP ±1 1/2 MAX509BC/D 0°C to +70°C Dice* ±1 1/2

Ordering Information continued on last page.

* Dice are specified at +25°C, DC parameters only.

**Contact factory for availability and processing to MIL-STD-883.

_________________Pin Configurations

TOP VIEW

OUTB

OUTA

REFB

REFA

AGND

N.C.

DGND

LDAC

DOUT

Pin Configurations continued at end of data sheet.

DIP/SO/SSOP

MAX509

MAX509/MAX510

TUE

(LSB)

±1 ±1 1/2 ±1

OUTC

OUTD

REFC

REFD

N.C.

SCLK

DIN

CLR

________________________________________________________________

Maxim Integrated Products

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

Quad, Serial 8-Bit DACs with Rail-to-Rail Outputs

ABSOLUTE MAXIMUM RATINGS

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

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

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

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

to VSS.................................................................-0.3V, +12V

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

REF_....................................................(V

OUT_..............................................................................V

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

Continuous Power Dissipation (T

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

16-Pin Wide SO (derate 9.52mW/°C above +70°C).........762mW

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

Note: The outputs may be shorted to VDD, VSS, or AGND if the package power dissipation is not exceeded. Typical short-circuitcurrent

MAX509/MAX510

to AGND is 50mA. Do not bias AGND more than +1V above DGND, or more than 2.5V below DGND.

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), (VDD+ 0.3V)

= +70°C)

+ 0.3V)

, V

ELECTRICAL CHARACTERISTICS

(VDD= +5V ±10%, VSS= 0V to -5.5V, V unless otherwise noted.)

PARAMETER CONDITIONS MIN TYP MAX UNITS

STATIC ACCURACY

Resolution 8 Bits

Total Unadjusted Error

Differential Nonlinearity ±1 LSBGuaranteed monotonic

Zero-Code Error

Zero-Code-Error Supply Rejection 12mV Zero-Code

Temperature Coefficient Full-Scale Error ±14 mVCode = FF hex

Full-Scale-Error Supply Rejection

Full-Scale-Error Temperature Coefficient

= 4V, AGND = DGND = 0V, RL= 10kΩ, CL= 100pF, TA= T

REF

SYMBOL

VREF = +4V,

TUE

DNL

ZCE

VSS= 0V or -5V ±10% VREF = -4V,

VSS= -5V ±10%

Code = 00 hex, VSS= 0V

Code = 00 hex, VSS= -5V ±10%

Code = 00 hex, VDD= 5V ±10%,

= 0V or -5V ±10%

Code = FF hex, VDD= +5V ±10%, VSS= 0V or -5V ±10%

20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW

20-Pin Wide SO (derate 10.00mW/°C above +70°C).......800mW

20-Pin SSOP (derate 10.00mW/°C above +70°C)............800mW

20-Pin CERDIP (derate 11.11mW/°C above +70°C) ........889mW

Operating Temperature Ranges:

MAX5_ _ _C_ _.....................................................0°C to +70°C

MAX5_ _ _E_ _..................................................-40°C to +85°C

MAX5_ _ _MJ_ ................................................-55°C to +125°C

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

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

to T

MAX

±1.5

±1MAX5_ _A

14MAX5_ _C 16MAX5_ _E

20MAX5_ _M ±14MAX5_ _C ±16MAX5_ _E ±20

LSB

MAX5_ _B

MAX5_ _M

MIN

±10 µV/°CCode = 00 hex

14MAX5_ _C 18MAX5_ _E 112

±10 µV/°CCode = FF hex

2 _______________________________________________________________________________________

Quad, Serial 8-Bit DACs

with Rail-to-Rail Outputs

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +5V ±10%, VSS= 0V to -5.5V, V unless otherwise noted.)

PARAMETER

REFERENCE INPUTS

Input Voltage Range Input Resistance (Note 1)

Input Capacitance (Note 2)

DAC OUTPUTS

Full-Scale Output Voltage V

Resistive Load

DIGITAL INPUTS

Input High Voltage 2.4 VV Input Low Voltage 0.8 VV Input Current 1.0 µAI

DIGITAL OUTPUTS

DYNAMIC PERFORMANCE

Voltage-Output Slew Rate

Digital Feedthrough 5 nV-s Digital-to-Analog Glitch Impulse

Signal-to-Noise + Distortion Ratio

Wideband Amplifier Noise 60

= 4V, AGND = DGND = 0V, RL= 10kΩ, CL= 100pF, TA= T

REF

SYMBOL

IH IL

OH OL

(Note 3)Channel-to-Channel Isolation -60 dB (Note 4)AC Feedthrough -70 dB

VREF = 4V, load regulation ≤ 1/4LSB 2 VREF = -4V, V

load regulation ≤ 1/4LSB VREF = VDDMAX5_ _C/E,

load regulation ≤ 1LSB VREF = VDDMAX5_ _M,

load regulation ≤ 2LSB

VIN= 0V or V (Note 5)Input Capacitance 10 pFC

SOURCE

SINK

To 1/2LSB, 10kΩ II 100pF loadOutput Settling Time (Note 6) 6 µs Code = 00 hex, all digital inputs

from 0V to V Code 128➝127

VREF = 4V code = FF hex

VREF = 4V

CONDITIONS MIN TYP MAX UNITS

MAX509 16 24 MAX510 MAX509 15 MAX510

= -5V ±10%,

= 0.2mAOutput High Voltage VDD- 0.5 VV

= 1.6mAOutput Low Voltage 0.4 VV

MAX5_ _C 1.0 MAX5_ _E 0.7 MAX5_ _M

at 1kHz, VDD= 5V,

p-p

at 20kHz, VSS= -5V ±10% 74

p-p

, 3dB bandwidthMultiplying Bandwidth 1

p-p

to T

MIN

812

0.5

12 nV-s 87

MAX

µV

MAX509/MAX510

kΩCode = 55 hex

pFCode = 00 hex

kΩ

V/µsPositive and negative

dBSINAD

MHzVREF = 0.5V

RMS

_______________________________________________________________________________________ 3

Quad, Serial 8-Bit DACs with Rail-to-Rail Outputs

ELECTRICAL CHARACTERISTICS (continued)

(VDD= +5V ±10%, VSS= 0V to -5.5V, V unless otherwise noted.)

PARAMETER CONDITIONS MIN TYP MAX UNITS

POWER SUPPLIES

Positive Supply Voltage Negative Supply Voltage -5.5 0 VFor specified performanceV

Positive Supply Current

Negative Supply Current mAI

Note 1: Input resistance is code dependent. The lowest input resistance occurs at code = 55 hex. Note 2: Input capacitance is code dependent. The highest input capacitance occurs at code = 00 hex. Note 3: VREF = 4V

MAX509/MAX510

code of all other DACs to 00 hex.

Note 4: VREF = 4V Note 5: Guaranteed by design. Note 6: Output settling time is measured by taking the code from 00 hex to FF hex, and from FF hex to 00 hex.

, 10kHz. Channel-to-channel isolation is measured by setting the code of one DAC to FF hex and setting the

p-p

, 10kHz. DAC code = 00 hex.

p-p

TIMING CHARACTERISTICS

(VDD= +5V ±10%, VSS= 0V to -5V, V

PARAMETER

LDAC Pulse Width Low CS Rise to LDAC Fall Setup Time CLR Pulse Width Low

SERIAL INTERFACE TIMING

CS Fall to SCLK Setup Time SCLK Fall to CS Rise Hold Time

SCLK Rise to CS Rise Hold Time SCLK Fall to CS Fall Hold Time

DIN to SCLK Rise Setup Time DIN to SCLK Rise Hold Time 0 nst SCLK Clock Frequency

SCLK Pulse Width High

SCLK Pulse Width Low

SCLK to DOUT Valid

Note 7: Guaranteed by design. Note 8: If LDAC is activated prior to CS's rising edge, it must stay low for t Note 9: Minimum delay from 12th clock cycle to CS rise.

= 4V, AGND = DGND = 0V, RL= 10kΩ, CL= 100pF, TA= T

REF

SYMBOL

REF

SYMBOL

LDW

CLL

CLW

CSS

CSH2 CSH1 CSH0

CLK

Outputs unloaded, all digital inputs = 0V or V

VSS= -5V ±10%, outputs unloaded, all digital inputs = 0V or V

= 4V, AGND = DGND = 0V, CL= 50pF, TA= T

MAX5_ _C/E 40 20 MAX5_ _M 50 25 (Notes 7, 8) 0 ns MAX5_ _C/E 40 20 MAX5_ _M

MAX5_ _M

(Note 9) 40 nst

MAX5_ _M

MAX5_ _M MAX5_ _C/E 40 MAX5_ _M 50

MAX5_ _M

CONDITIONS MIN TYP MAX UNITS

MAX5_ _C/E

MAX5_ _M MAX5_ _C/E

or longer after CS goes high.

LDW

4.5 5.5 VFor specified performanceV

to T

MIN

MAX

50 25

40MAX5_ _C/E 50

0 nst

0 ns(Note 7)t 40MAX5_ _C/E 50

40MAX5_ _C/E 50

10 100MAX5_ _C/E 10 100

to T

MAX

mAI

MHz

MIN

510 512

510 512MAX5_ _M

, unless otherwise noted.)

20 12.5MAX5_ _C/E 20 10

nst

4 _______________________________________________________________________________________

Quad, Serial 8-Bit DACs

with Rail-to-Rail Outputs

__________________________________________Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

OUTPUT SINK CURRENT

(mA)

OUT

0 1.2

0.2 0.6 1.0

vs. REFERENCE VOLTAGE

VSS = -5V

(mA)

VDD = +5V

ALL LOGIC INPUTS = +5V

-4 -2 2

-5 5

REFERENCE VOLTAGE INPUT

FREQUENCY RESPONSE

- VSS)

vs. (V

OUT

VDD = VREF = +5V

= GND = 0V

ALL DIGITAL INPUTS = 00 HEX

0.4 V

- VSS (V)

OUT

SUPPLY CURRENT

VREF VOLTAGE (V)

0.8

VSS = 0V

431-1-3

MAX509-FG01

MAX509-FG03

THD + NOISE (dB)

OUTPUT SOURCE CURRENT

vs. OUTPUT VOLTAGE

VDD = VREF = +5V

= GND

DIGITAL INPUT = FF HEX

3.6 4.6

3.8 4.0

THD + NOISE AT DAC OUTPUT

vs. REFERENCE AMPLITUDE

VDD = +5V

= -5V

INPUT CODE = FF HEX

FREQ = 20kHz

02 6 10

REFERENCE AMPLITUDE (Vp-p)

REFERENCE VOLTAGE INPUT

FREQUENCY RESPONSE

4.4

4.2 V

(V)

OUT

FREQ = 1kHz

(mA)

OUT

-40

-45

-50

-55

-60

-65

-70

-75

-80

-85

-90

-25

-20

-15

-10

-5

4.8

MAX509-FG10

5.0

MAX509-FG04

0.1%

THD + NOISE (%)

0.01%

7 6

SUPPLY CURRENT (mA)

-60 -20 40 100

-20

-30

-40

-50

-60

THD + NOISE (dB)

-70

-80

-90

SUPPLY CURRENT

vs. TEMPERATURE

VDD = +5.5V

= -5.5V

VREF = -4.75 ALL DIGITAL INPUTS = +5V

-40 0 60 120

VREF = 1Vp-p

10 1k 100k

20 80

TEMPERATURE (°C)

THD + NOISE AT DAC OUTPUT

vs. REFERENCE FREQUENCY

VDD = +5V

= -5V

INPUT CODE = FF HEX FREQ = SWEPT

VREF = 8Vp-p

VREF = 4Vp-p

100 10k

REFERENCE FREQUENCY (Hz)

REFERENCE VOLTAGE INPUT

FREQUENCY RESPONSE

140

MAX509-FG02

10%

MAX509-FG05

0.1%

0.01%

MAX509/MAX510

THD + NOISE (%)

-10

-20

-30

RELATIVE OUTPUT (dB)

VDD = +5V

= AGND

VREF = 2.5VDC + 0.5Vp-p SINE WAVE

-40

1k 10k 100k

FREQUENCY (Hz)

MAX509-FG06

-10

-20

-30

RELATIVE OUTPUT (dB)

VDD = +5V

= AGND

VREF = 2.5VDC + 0.05Vp-p SINE WAVE

-40

10M

1k 10k 100k

FREQUENCY (Hz)

10M

MAX509-FG07

-10

-20

-30

RELATIVE OUTPUT (dB)

-40

VDD = +5V

= -5V

VREF = 2.5VDC + 4Vp-p SINE WAVE

1k 10k 100k

FREQUENCY (Hz)

10M

_______________________________________________________________________________________

MAX509-FG08

Quad, Serial 8-DACs with Rail-to-Rail Outputs

____________________________Typical Operating Characteristics (continued)

(TA = +25°C, unless otherwise noted.)

ZERO-CODE ERROR

vs. NEGATIVE SUPPLY VOLTAGE

5.0

4.8

4.6

4.4

4.2

4.0

ZERO-CODE ERROR (mV)

3.8

3.6

MAX509/MAX510

3.4 0-4

-1 -2

-3

VSS (V)

VDD = +5V VREF = +4V

-5

MAX509-FG09

-6

REFERENCE FEEDTHROUGH AT 10kHz



A = REFA, 10V B = OUTA, 50µV/div, UNLOADED TIMEBASE = 50µs/div 



p-p

WORST-CASE 1LSB DIGITAL STEP CHANGE



2V 20mV





A = CS, 2V/div B = OUTA, 20mV ˜ TIMEBASE = 200ns/div



REFERENCE FEEDTHROUGH AT 4kHz

5V 50µV



A = REFA, 10V B = OUTA, 50µV/div, UNLOADED TIMEBASE = 100µs/div



p-p

200nS

100µS

REFERENCE FEEDTHROUGH AT 40kHz



A = REFA, 10V B = OUTA, 100µV/div, UNLOADED TIMEBASE = 10µs/div V

= +5V, VSS = -5V

CODE = ALL 0s

REFERENCE FEEDTHROUGH AT 400Hz



A = REFA, 10V B = OUTA, 50µV/div, UNLOADED TIMEBASE = 1ms/div



p-p



p-p

6 _______________________________________________________________________________________

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