Rainbow Electronics MAX530 User Manual

19-0168; Rev 3; 7/95

+5V, Low-Power, Parallel-Input,

Voltage-Output, 12-Bit DAC

_______________General Description

The MAX530 is a low-power, 12-bit, voltage-output digital-to-analog converter (DAC) that uses single +5V or dual ±5V supplies. This device has an on-chip voltage reference plus an output buffer amplifier. Operating current is only 250µA from a single +5V supply, making it ideal for portable and battery-powered applications. In addition, the SSOP (Shrink-Small-Outline-Package) measures only 0.1 square inches, using less board area than an 8-pin DIP. 12-bit resolution is achieved through laser trimming of the DAC, op amp, and reference. No further adjustments are necessary.

Internal gain-setting resistors can be used to define a DAC output voltage range of 0V to +2.048V, 0V to +4.096V, or ±2.048V. Four-quadrant multiplication is possible without the use of external resistors or op amps. The parallel logic inputs are double buffered and are compatible with 4-bit, 8-bit, and 16-bit microprocessors. For DACs with similar features but with a serial data interface, refer to the MAX531/MAX538/MAX539 data sheet.

________________________Applications

Battery-Powered Data-Conversion Products Minimum Component-Count Analog Systems Digital Offset/Gain Adjustment Industrial Process Control Arbitrary Function Generators Automatic Test Equipment Microprocessor-Controlled Calibration

________________Functional Diagram

REFOUT REFIN ROFS

REFGND

AGND

CLR

LDAC

18 13 22

2.048V

REFERENCE

24 1 D0/D8

D1/D9

DAC LATCH

12-BIT DAC LATCH

NBM

NBL INPUT LATCH

D2/D10

INPUT LATCH

234567

D3/D11

MAX530

POWER-ON

RESET

CONTROL

LOGIC

NBH INPUT LATCH

RFB

VOUT

DGND

____________________________Features

♦ Buffered Voltage Output ♦ Internal 2.048V Voltage Reference ♦ Operates from Single +5V or Dual ±5V Supplies ♦ Low Power Consumption:

250µA Operating Current 40µA Shutdown-Mode Current

♦ SSOP Package Saves Space

♦ Relative Accuracy: ±

Temperature

LSB Max Over

♦ Guaranteed Monotonic Over Temperature ♦ 4-Quadrant Multiplication with No External

Components

♦ Power-On Reset ♦ Double-Buffered Parallel Logic Inputs

______________Ordering Information

PART TEMP. RANGE PIN-PACKAGE

MAX530ACNG 0°C to +70°C 24 Narrow Plastic DIP MAX530BCNG 0°C to +70°C 24 Narrow Plastic DIP MAX530ACWG 0°C to +70°C 24 Wide SO MAX530BCWG 0°C to +70°C 24 Wide SO MAX530ACAG 0°C to +70°C 24 SSOP MAX530BCAG 0°C to +70°C 24 SSOP MAX530BC/D 0°C to +70°C Dice* ±1

Ordering Information continued on last page.

* Dice are tested at T

= +25°C, DC parameters only.

ERROR

(LSB)

±1

__________________Pin Configuration

TOP VIEW

D1/D9 D2/D10 D3/D11

DGND

1 2 3

11 12

DIP/SO/SSOP

MAX530

24 23

22 21 20

19 18 17 16 15 14 13

D0/D8 V

ROFS RFB VOUT V

REFOUT REFGND LDAC CLR AGND REFIN

MAX530

________________________________________________________________

Maxim Integrated Products

Call toll free 1-800-998-8800 for free samples or literature.

+5V, Low-Power, Parallel-Input, Voltage-Output, 12-Bit DAC

ABSOLUTE MAXIMUM RATINGS

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

to DGND and VSSto AGND .................................-6V, +0.3V

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

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

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

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

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

MAX530

REFOUT.............................................(V

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

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

ROFS .................................................(V

Note 1: The output may be shorted to VDD, VSS, DGND, or AGND if the continuous package power dissipation and current ratings

are not exceeded. Typical short-circuit currents are 20mA.

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)

DD DD

+ 0.3V) + 0.3V)

+ 0.3V)

VOUT to AGND (Note 1) .............................................. V

Continuous Current, Any Input ........................................±20mA

Continuous Power Dissipation (T

Narrow Plastic DIP (derate 13.33mW/°C above +70°C)......1067mW

Wide SO (derate 11.76mW/°C above +70°C) .......... 941mW

SSOP (derate 8.00mW/°C above +70°C) ..................640mW

Operating Temperature Ranges:

MAX530_C_ _ ...................................................0°C to +70°C

MAX530_E_ _ ................................................-40°C to +85°C

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

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

= +70°C)

SS,VDD

ELECTRICAL CHARACTERISTICS—Single +5V Supply

(VDD= 5V ±10%, VSS= 0V, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT, C RL= 10kΩ, CL= 100pF, TA= T

STATIC PERFORMANCE

Unipolar Offset Error Unipolar Offset

Temperature Coefficient Unipolar Offset-Error

Power-Supply Rejection

Gain Error (Note 2)

DAC VOLTAGE OUTPUT (VOUT)

Output Voltage Range

Short-Circuit Current

REFERENCE INPUT (REFIN)

MIN

to T

, unless otherwise noted.)

MAX

VDD= 5V (Note 2)

INLRelative Accuracy

Guaranteed monotonic LSB±1DNLDifferential Nonlinearity VDD= 5V

4.5V ≤ VDD≤ 5.5V (Note 3)

DAC latch = all 1s, VOUT < VDD- 0.4V (Note 2)

4.5V ≤ VDD≤ 5.5V (Note 3)

VOUT = 2V, load regulation ≤ ±1LSB kΩ2Resistive Load

Code dependent, minimum at code 555hex kΩ40Reference Input Resistance Code dependent (Note 4) pF10 50Reference Input Capacitance (Note 5) dB-80AC Feedthrough

CONDITIONS

MAX530AC/AE MAX530BC/BE

MAX530_C/E

REFOUT

±0.5

±1

- 0.4

- 2Reference Input Range

= 33µF,

UNITSMIN TYP MAXSYMBOLPARAMETER

ppm/°C3TCV

LSB/V0.4 1PSRR

ppm/°C1Gain-Error Temperature Coefficient

LSB/V0.4 1PSRRGain-Error Power-Supply Rejection

Bits12NResolution LSB

LSB018V

LSB±1GE

V0V

Ω0.2DC Output Impedance

mA20I

V0V

2 _______________________________________________________________________________________

+5V, Low-Power, Parallel-Input,

LDAC, CLR, CS, WR

Voltage-Output, 12-Bit DAC

ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)

(VDD= 5V ±10%, VSS= 0V, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT, C

= 10kΩ, CL= 100pF, TA= T

PARAMETER

REFERENCE OUTPUT (REFOUT)

Reference Tolerance V

Reference Output Resistance R Power-Supply Rejection Ratio PSRR 300 µV/V Noise Voltage e

Temperature Coefficient Minimum Required External

Capacitor

DYNAMIC PERFORMANCE

Voltage Output Slew Rate Voltage Output Settling Time Digital Feedthrough 5 nV-s

Signal-to-Noise Plus Distortion Ratio

DIGITAL INPUTS (D0-D7,

Logic High Input V Logic Low Input V Digital Leakage Current ±1 µA Digital Input Capacitance 8 pF

POWER SUPPLIES

Positive Supply-Voltage Range V Positive Supply Current I

SWITCHING CHARACTERISTICS

Address to WR Setup t Address to WR Hold t CS to WR Setup t CS to WR Hold t Data to WR Setup Data to WR Hold WR Pulse Width t LDAC Pulse Width t CLR Pulse Width t

Internal Power-On Reset Pulse Width

to T

MIN

, unless otherwise noted.)

MAX

SYMBOL MIN TYP MAX30UNITS

REFOUT

MIN

SINAD

VDD= 5.0V

(Note 8)

4.5V ≤ VDD≤ 5.5V

0.1Hz to 10kHz

MAX530AC/AE MAX530BC/BE

TA= +25°C To ±0.5LSB, VOUT = 2V WR = VDD, digital inputs all 1s to all 0s Unity gain (Note 5) Gain = 2 (Note 5)

, A0, A1)

VIN= 0V or V

(Note 6) 4.5 5.5 V

Outputs unloaded, all digital inputs = 0V or V

AWS AWH CWS CWH

LDAC

CLR

(Note 4) 1.3 10 µs

POR

CONDITIONS

MAX530BC MAX530BE

2.024 2.048 2.072TA= +25°C

2.013 2.083

400

30 50

3.3 µF

0.15 0.25 V/µs 25

68 68

2.4 V

250 400 µA

5 ns 5 ns 0 ns 0 ns

45 ns

0 ns 45 ns 45 ns 45 ns

REFOUT

2 Ω

0.8 V

= 33µF,

µVp-p

ppm/°C

MAX530

V2.017 2.079

µs

_______________________________________________________________________________________ 3

+5V, Low-Power, Parallel-Input,

LDAC, CLR, CS, WR

Voltage-Output, 12-Bit DAC

ELECTRICAL CHARACTERISTICS—Dual ±5V Supplies

(VDD= 5V ±10%, VSS= -5V ±10%, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT, C

= 33µF, RL= 10kΩ, CL= 100pF, TA= T

REFOUT

MIN

to T

, unless otherwise noted.)

MAX

CONDITIONS

STATIC PERFORMANCE

MAX530

VDD= 5V, VSS= -5V

INLRelative Accuracy

Guaranteed monotonic LSB±1DNLDifferential Nonlinearity Bipolar Offset Error Bipolar Offset

Temperature Coefficient Bipolar Offset-Error

Power-Supply Rejection Gain Error

DAC VOLTAGE OUTPUT (VOUT)

Output Voltage Range

Short-Circuit Current

REFERENCE INPUT (REFIN)

REFERENCE OUTPUT (REFOUT)—Specifications are identical to those under Single +5V Supply DYNAMIC PERFORMANCE—Specifications are identical to those under Single +5V Supply DIGITAL INPUTS (D0-D7, POWER SUPPLIES

Positive Supply Voltage Negative Supply Voltage Positive Supply Current Negative Supply Current SWITCHING CHARACTERISTICS—Specifications are identical to those under Single +5V Supply

VDD= 5V, VSS= -5V

4.5V ≤ VDD≤ 5.5V

-5.5V ≤ VSS≤ -4.5V (Note 3)

MAX530_C/E

4.5V ≤ VDD≤ 5.5V, -5.5V ≤ VSS≤ -4.5V (Note 3)

VOUT = 2V, load regulation ≤ ±1LSB kΩ2Resistive Load

Code dependent, minimum at code 555hex kΩ40Reference Input Resistance

Code dependent (Note 4) pF10 50Reference Input Capacitance

(Note 5) dB-80AC Feedthrough

, A0, A1)—Specifications are identical to those under Single +5V Supply

(Note 6) V4.5 5.5V

(Note 7) V-5.5 -4.5V

Outputs unloaded, all digital inputs = 0V or V

MAX530AC/AE ±0.5 MAX530BC/BE

MAX530_C/E

DD DD

UNITSMIN TYP MAXSYMBOLPARAMETER

Bits12NResolution

LSB

±1.5

LSB0±8V

3TCV

0.4 1PSRRGain-Error Power-Supply Rejection

ppm/°C

LSB/V0.4 1PSRR

LSB±1

ppm/°C1TCGain-Error Temperature Coefficient

LSB/V

VVSS+ 0.4 VDD- 0.4

Ω0.2DC Output Impedance

mA20I

VVSS+ 2 VDD- 2Reference Input Range

µA250 400I µA150 200I

4 _______________________________________________________________________________________

+5V, Low-Power, Parallel-Input,

Voltage-Output, 12-Bit DAC

ELECTRICAL CHARACTERISTICS—Dual ±5V Supplies (continued)

(VDD= 5V ±10%, VSS= -5V ±10%, AGND = DGND = REFGND = 0V, REFIN = 2.048V (external), RFB = ROFS = VOUT, C

Note 2: In single supply, INL and GE are calculated from code 11 to code 4095. Note 3: Zero Code, Bipolar and Gain Error PSRR are input referred specifications. In Unity Gain, the specification is 500µV.

Note 4: Guaranteed by design. Note 5: REFIN = 1kHz, 2.0Vp-p. Note 6: For specified performance, V Note 7: For specified performance, V Note 8: Tested at I

= 33µF, RL= 10kΩ, CL= 100pF, TA= T

REFOUT

In Gain = 2 and Bipolar modes, the specification is 1mV.

= 5V ±10% is guaranteed by PSRR tests.

= -5V ±10% is guaranteed by PSRR tests.

= 100µA. The reference can typically source up to 5mA (see

OUT

MIN

to T

, unless otherwise noted.)

MAX

Typical Operating Characteristics

__________________________________________Typical Operating Characteristics

(TA = +25°C, single supply (+5V), unity gain, code = all 1s, unless otherwise noted).

INTEGRAL NONLINEARITY vs.

0.25

-0.50

INTEGRAL NONLINEARITY (LSB)

-1.00

-1.25

DIGITAL INPUT CODE (0–11)

DUAL SUPPLIES

SINGLE SUPPLY

012

2610

DIGITAL INPUT CODE (DECIMAL)

0.25

MAX530-1

-0.25

INTEGRAL NONLINEARITY vs.

DIGITAL INPUT CODE (11–4095)

INTEGRAL NONLINEARITY (LSB)

11 512 10241536 2048 2560 3072 3584 4095

DIGITAL INPUT CODE (DECIMAL)

OUTPUT SINK CAPABILITY (mA)

OUTPUT SINK CAPABILITY vs.

OUTPUT PULL-DOWN VOLTAGE

16 14 12 10

8 6 4 2

0 0.8

0.2 0.4

OUTPUT PULL-DOWN VOLTAGE (V)

0.6

MAX530

MAX531-3

1.0

OUTPUT SOURCE CAPABILITY vs.

OUTPUT PULL-UP VOLTAGE

8 7 6 5 4 3 2

OUTPUT SOURCE CAPABILITY (mA)

1 0

OUTPUT PULL-UP VOLTAGE (V)

MAX531-4

_______________________________________________________________________________________

ANALOG FEEDTHROUGH vs.

-110

-100

-90

-80

-70

-60

-50

-40

-30

ANALOG FEEDTHROUGH (dB)

-20

-10 0

1 10 1k 100k

FREQUENCY

REFIN = 2V

p-p

CODE = ALL 0s, DUAL SUPPLIES (±5V)

100 10k 1M

FREQUENCY (Hz)

REFERENCE VOLTAGE vs.

2.055

MAX531-5

2.050

REFERENCE VOLTAGE (V)

2.045

-60 120

TEMPERATURE

-20 20 80 TEMPERATURE (°C)

MAX531-6

100400-40

140

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