MAX531BCSD+T Datasheet MAX538BESA+T, MAX538BCSA+T, MAX539BCPA+ | P1-P3

_______________General Description

The MAX531/MAX538/MAX539 are low-power, voltage-

output, 12-bit digital-to-analog converters (DACs) speci-

fied for single +5V power-supply operation. The MAX531

can also be operated with ±5V supplies. The

MAX538/MAX539 draw only 140µA, and the MAX531

(with internal reference) draws only 260µA. The

MAX538/MAX539 come in 8-pin DIP and SO packages,

while the MAX531 comes in 14-pin DIP and SO pack-

ages. All parts have been trimmed for offset voltage,

gain, and linearity, so no further adjustment is necessary.

The MAX538’s buffer is fixed at a gain of +1 and the

MAX539’s buffer at a gain of +2. The MAX531’s internal

op amp may be configured for a gain of +1 or +2, as

well as for unipolar or bipolar output voltages. The

MAX531 can also be used as a four-quadrant multiplier

without external resistors or op amps.

For parallel data inputs, see the MAX530 data sheet.

_______________________Applications

Battery-Powered Test Instruments

Digital Offset and Gain Adjustment

Battery-Operated/Remote Industrial Controls

Machine and Motion Control Devices

Cellular Telephones

___________________________Features

♦ Operate from Single +5V Supply

♦ Buffered Voltage Output

♦ Internal 2.048V Reference (MAX531)

♦ 140µA Supply Current (MAX538/MAX539)

♦ INL = ±1/2LSB (max)

♦ Guaranteed Monotonic over Temperature

♦ Flexible Output Ranges:

0V to V

(MAX531/MAX539)

to V

(MAX531)

0V to 2.6V (MAX531/MAX538)

♦ 8-Pin SO/DIP (MAX538/MAX539)

♦ Power-On Reset

♦ Serial Data Output for Daisy-Chaining

______________Ordering Information

MAX531/MAX538/MAX539

+5V, Low-Power, Voltage-Output,

Serial 12-Bit DACs

________________________________________________________________

Maxim Integrated Products

VOUT

REFIN

AGND

DOUT

SCLK

DIN

DIP/SO

TOP VIEW

MAX538

MAX539

_________________Pin Configurations

________________Functional Diagram

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

19-0172; Rev 6; 2/97

PART TEMP. RANGE PIN-PACKAGE

MAX531ACPD

0°C to +70°C 14 Plastic DIP

MAX531BCPD 0°C to +70°C 14 Plastic DIP

MAX531ACSD 0°C to +70°C 14 SO

MAX531BCSD 0°C to +70°C 14 SO

ERROR

(LSB)

±1/2

±1

±1/2

±1

DAC

DAC REGISTER

(12 BITS)

SHIFT REGISTER

(12 BITS)

4

BITS

CONTROL

LOGIC

POWER-UP

RESET

2.048V

REFERENCE

(MAX531 ONLY)

AGND

SCLK

DIN

(MAX531 ONLY)

REFOUT

REFIN

(MAX531 ONLY)

BIPOFF

RFB

(MAX531

ONLY)

VOUT

DGND

(MAX531

ONLY)



(MAX531

ONLY)

DOUT

(LSB)

(MSB)

CLR

(MAX531

ONLY)

MAX531

MAX538

MAX539

MAX531BC/D 0°C to +70°C Dice* ±1

Ordering Information continued at end of data sheet.

*Dice are specified at T

= +25°C only.

Pin Configurations continued at end of data sheet.

MAX531/MAX538/MAX539

+5V, Low-Power, Voltage-Output

Serial 12-Bit DACs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

to DGND and V

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

to DGND and V

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

to V

.................................................................-0.3V, +12V

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

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

+ 0.3V)

REFIN ..................................................(V

- 0.3V), (V

+ 0.3V)

REFOUT to AGND .........................................-0.3V, (V

+ 0.3V)

RFB .....................................................(V

- 0.3V), (V

+ 0.3V)

BIPOFF................................................(V

- 0.3V), (V

+ 0.3V)

OUT

(Note 1) ................................................................V

, V

Continuous Current, Any Pin................................-20mA, +20mA

Continuous Power Dissipation (T

= +70°C)

8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)....727mW

8-Pin SO (derate 5.88mW/°C above +70°C) ................471mW

14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)...800mW

14-Pin SO (derate 8.33mW/°C above +70°C) ..............667mW

Operating Temperature Ranges

MAX53_ _C_ _ .....................................................0°C to +70°C

MAX53_ _E_ _ ..................................................-40°C to +85°C

Storage Temperature Range.............................-65°C to +165°C

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

ELECTRICAL CHARACTERISTICS—Single +5V Supply

= +5V ±10%, V

= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX531), C

REFOUT

= 33µF

(MAX531), R

= 10kΩ, C

= 100pF, T

= T

MIN

to T

MAX

, unless otherwise noted.)

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.

PARAMETER SYMBOL MIN TYP MAX UNITS

Unipolar Offset Error V

08LSB

Differential Nonlinearity DNL ±1 LSB

Relative Accuracy (Note 2) INL LSB

±1

Unipolar Offset Tempco TCV

3 ppm/°C

Gain Error (Note 2) GE ±1 LSB

Resolution N 12 Bits

±0.5

Gain-Error Tempco 1 ppm/°C

Power-Supply Rejection Ratio

(Note 3)

PSRR 0.4 1 LSB/V

- 2

Output Voltage Range

- 0.4

Output Load Regulation 1 LSB

Short-Circuit Current I

12 mA

Voltage Range 0V

- 2 V

Input Resistance 40 kΩ

Input Capacitance 10 50 pF

AC Feedthrough -80 dB

CONDITIONS

MAX53_ _C/E

Guaranteed monotonic

4.5V ≤ V

≤ 5.5V

MAX53_ _C/E

MAX531 (G = +1), MAX538

MAX531 (G = +2), MAX539

VOUT = 2V, R

= 2kΩ

Code dependent, minimum at code 555 hex

Code dependent (Note 4)

REFIN = 1kHz, 2Vp-p

Note 1: The output may be shorted to V

, V

or AGND if the package power dissipation limit is not exceeded.

MAX53_AC/E

MAX53_BC/E

REFERENCE INPUT (REFIN)

VOLTAGE OUTPUT (VOUT)

STATIC PERFORMANCE

MAX531/MAX538/MAX539

+5V, Low-Power, Voltage-Output,

Serial 12-Bit DACs

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)

= +5V ±10%, V

= 0V, AGND = DGND = 0V, REFIN = 2.048V (external), RFB = BIPOFF = VOUT (MAX531), C

REFOUT

= 33µF

(MAX531), R

= 10kΩ, C

= 100pF, T

= T

MIN

to T

MAX

, unless otherwise noted.)

PARAMETER

Input Current

SYMBOL MIN TYP MAX

±1

UNITS

Noise Voltage e

µA

400

Input Capacitance C

µVp-p

Power-Supply Rejection Ratio

PSRR 300 µV/V

Resistance R

REFOUT

0.5 2

Ω

Temperature Coefficient TC

REFOUT

30 50

ppm/°C

Minimum Required External

Capacitor

MIN

3.3 µF

Output High

Input High

2.4

- 1

Input Low

0.8 V

Output Low V

0.4 V

Voltage-Output Slew Rate SR 0.15 0.25 V/µs

Voltage-Output Settling Time 25 µs

Digital Feedthrough

2.024 2.048 2.072

5 nV-s

Signal-to-Noise plus Distortion SINAD 68 dB

260 400

CONDITIONS

= 0V or V

0.1Hz to 10kHz

4.5V ≤ V

≤ 5.5V

(Note 5)

MAX531AC/AE/AM/BM

SOURCE

= 2mA

SINK

= 2mA

= +25°C

To ±1/2LSB, VOUT = 2V

CS = V

, DIN = 100kHz

REFIN = 1kHz, 2Vp-p (G = +1 or +2),

code = FFF hex

Power-Supply Current I

All inputs = 0V or V

output = no load

140 300

µA

CS Setup Time

CSS

20 ns

SCLK Fall to CS Fall Hold Time

CSH0

15 ns

SCLK Fall to CS Rise Hold Time

CSH1

0 ns

SCLK High Width t

35 ns

SCLK Low Width t

35 ns

DIN Setup Time t

45 ns

DIN Hold Time t

0 ns

DOUT Valid Propagation Delay t

= 50pF 80 ns

CS High Pulse Width

CSW

20 ns

CLR Pulse Width

CLR

25 ns

MAX531BC/BE

MAX531

MAX538, MAX539

2.017 2.079

Reference Output Voltage V

2.013 2.083

= 5.0V

CS Rise to SCLK Rise Setup Time

CS1

50 ns

= +25°C

MAX531BC

MAX531BE

Positive Supply Voltage V

4.5 5.5 V

REFERENCE OUTPUT (REFOUT—MAX531 only)

DIGITAL INPUTS (DIN, SCLK, CS, CLR)

DIGITAL OUTPUT (DOUT)

DYNAMIC PERFORMANCE

POWER SUPPLY

SWITCHING CHARACTERISTICS

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P16

MAX531BCSD+T

Mfr. #:

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Manufacturer:

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Description:

Digital to Analog Converters - DAC 12-Bit Precision DAC

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MAX531BCSD+T

MAX531BCSD+T

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