MAXIM MAX503 User Manual

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19-0279; Rev 0; 8/94

5V, Low-Power, Parallel-Input,

Voltage-Output, 10-Bit DAC

_______________General Description

The MAX503 is a low-power, 10-bit, voltage-output digital­to-analog converter (DAC) that uses single 5V or dual ±5V
supplies. This device has an internal 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 shrink small­outline package (SSOP) measures only 0.1 square inches,
using less board area than an 8-pin DIP. 10-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, 8­bit, and 16-bit microprocessors. For a hardware and soft­ware compatible 12-bit upgrade, refer to the MAX530 data
sheet. For DACs with similar features but with a serial data
interface, refer to the MAX504/MAX515 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

____________________________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

1

♦ Relative Accuracy: ±

Temperature

/

LSB Max Over

2

♦ 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

MAX503CNG 0°C to +70°C 24 Narrow Plastic DIP
MAX503CWG 0°C to +70°C 24 Wide SO
MAX503CAG 0°C to +70°C 24 SSOP
MAX503ENG -40°C to +85°C 24 Narrow Plastic DIP
MAX503EWG -40°C to +85°C 24 Wide SO
MAX503EAG -40°C to +85°C 24 SSOP

Refer to the MAX530 for military temperature or die equivalents.

MAX503

________________Functional Diagram

REFOUT REFIN ROFS

REFGND

AGND

CLR

LDAC

18 13 22

2.048V

REFERENCE
17
14

POWER-ON

RESET

15

8

A0

9

A1

CONTROL

11

CS

WR

LOGIC

10

16

________________________________________________________________

24 1
D6/S0

D7/S1

DAC

10-BIT DAC LATCH

DAC LATCH

NBM

NBL
INPUT
LATCH

INPUT
LATCH

234567

D2

D8/D0

D3

D9/D1

MAX503

D4

D5

NBH
INPUT
LATCH

21

RFB

20

VOUT

23

V

DD

12

DGND

19

V

SS

__________________Pin Configuration

TOP VIEW

D7/S1
D8/D0
D9/D1

D2
D3
D4

D5

A0

A1

WR

CS

DGND

1
2
3
4

MAX503

5
6
7
8

9
10
11
12

DIP/SO/SSOP

Maxim Integrated Products

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

24
23

22
21
20

19
18
17
16
15
14
13

D6/S0
V

DD

ROFS
RFB
VOUT
V

SS

REFOUT
REFGND
LDAC
CLR
AGND
REFIN

1

5V, Low-Power, Parallel-Input,
Voltage-Output, 10-Bit DAC

ABSOLUTE MAXIMUM RATINGS

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

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

V

SS

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

V

DD

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

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

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

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

MAX503

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)

SS

- 0.3V), (VDD+ 0.3V)

SS

- 0.3V), (VDD+ 0.3V)

SS

- 0.3V), (VDD+ 0.3V)

SS

DD
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

MAX503C_G .........................................................0°C to +70°C

MAX503E_G ......................................................-40°C to +85°C

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

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

= +70°C)

A

SS,VDD

ELECTRICAL CHARACTERISTICS—Single +5V Supply

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

PARAMETER SYMBOL MIN TYP MAX UNITS

STATIC PERFORMANCE

Resolution
Relative Accuracy INL ±0.5 LSB(Note 2)

Differential Nonlinearity DNL ±1 LSB
Unipolar Offset Error V
Unipolar Offset

Temperature Coefficient
Unipolar Offset-Error

Supply Rejection
Gain Error (Note 2) GE LSB±1
Gain-Error Temperature Coefficient 1 ppm/°C

Gain-Error Power-Supply Rejection PSRR 0.1 LSB/V

DAC VOLTAGE OUTPUT (VOUT)

Output Voltage Range 0V
Resistive Load 2 kΩ
DC Output Impedance 0.2 Ω
Short-Circuit Current I

REFERENCE INPUT (REFIN)

Reference Input Range 0V
Reference Input Resistance 40 kΩ
Reference Input Capacitance 10 50 pF
AC Feedthrough -80 dB

to T

MIN

, unless otherwise noted.)

MAX

CONDITIONS

N 10 Bits

Guaranteed monotonic

OS

TCV

OS

PSRR 0.1 LSB/V

4.5V ≤ VDD≤ 5.5V
DAC latch = all 1s,

VOUT < VDD- 0.4V (Note 2)

4.5V ≤ VDD≤ 5.5V

VOUT = 2V, load regulation ≤ ±0.5LSB

SC

Code dependent, minimum at code 0101...
Code dependent (Note 3)
(Note 4)

0 0.25 3 LSB

= 33µF,

REFOUT

3 ppm/°C

- 0.4 V

DD

12 mA

- 2 V

DD

2 _______________________________________________________________________________________

5V, Low-Power, Parallel-Input,

Voltage-Output, 10-Bit DAC

ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)

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

= 10kΩ, CL= 100pF, TA= T

R

L

PARAMETER

REFERENCE OUTPUT (REFOUT)

Reference Tolerance V

Reference Output Resistance R
Power-Supply Rejection Ratio PSRR 200 µV/V
Noise Voltage e
Temperature Coefficient
Required External Capacitor C

DYNAMIC PERFORMANCE

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

Signal-to-Noise Plus
Distortion Ratio

DIGITAL INPUTS (S0, S1, D0–D9, LDAC, CLR, CS, WR, A0, A1)

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 MAX UNITS

REFOUT

REFOUT

REFOUT

SINAD

MAX503C
MAX503E
(Note 5)

4.5V ≤ VDD≤ 5.5V

0.1Hz to 10kHz

n

TA= +25°C
To ±0.5LSB, VOUT = 2V
WR = VDD, digital inputs all 1s to all 0s
Unity gain (Note 4)
Gain = 2 (Note 4)

IH

IL

VIN= 0V or V

DD

Outputs unloaded, all digital inputs = 0V or V

DD

AWS
AWH
CWS
CWH

t

DS

t

DH

WR

LDAC

CLR

t

(Note 3) 1.3 10 µs

POR

CONDITIONS

2.024 2.048 2.072TA= +25°C

2.011 2.085

3.3 µF

0.15 0.25 V/µs

2.4 V

DD

4.5 5.5 V

DD

5 ns
5 ns
0 ns
0 ns

45 ns

0 ns
45 ns
45 ns
45 ns

= 33µF,

REFOUT

2 Ω

400

30

25

68
68

250 400 µA

µVp-p

ppm/°C

0.8 V

MAX503

V2.015 2.081

µs

dB

_______________________________________________________________________________________ 3

5V, Low-Power, Parallel-Input,
Voltage-Output, 10-Bit DAC

ELECTRICAL CHARACTERISTICS—Dual ±5V Supplies

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

= 10kΩ, CL= 100pF, TA= T

R

L

PARAMETER

STATIC PERFORMANCE

Resolution N

MAX503

Relative Accuracy INL +0.5 LSB
Differential Nonlinearity
Bipolar Offset Error V
Bipolar Offset

Temperature Coefficient
Bipolar Offset-Error

Power-Supply Rejection
Gain Error ±1 LSB

Gain-Error Temperature Coefficient TC 1
Gain-Error Power-Supply Rejection

DAC VOLTAGE OUTPUT (VOUT)

Output Voltage Range
Resistive Load
DC Output Impedance
Short-Circuit Current I

REFERENCE INPUT (REFIN)

Reference Input Range
Reference Input Resistance 40 kΩ
Reference Input Capacitance
AC Feedthrough -80 dB

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 (S0, S1, D0–D9, LDAC, CLR, CS, WR, A0, A1)—Specifications are identical to those under Single +5V Supply
POWER SUPPLIES

Positive Supply Voltage V
Negative Supply Voltage V
Positive Supply Current I
Negative Supply Current I

SWITCHING CHARACTERISTICS—Specifications are identical to those under Single +5V Supply

Note 2: In single supply, INL and GE are calculated from code 3 to code 1023 (code excludes S0 and S1).
Note 3: Guaranteed by design.
Note 4: REFIN = 1kHz, 2.0Vp-p.
Note 5: Tested at I

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

OUT

to T

MIN

, unless otherwise noted.)

MAX

SYMBOL MIN TYP MAX

DNL ±1 LSB

Guaranteed monotonic

OS

TCV

OS

PSRR

PSRR 0.1 LSB/V

4.5V ≤ VDD≤ 5.5V, -5.5V ≤ V

4.5V ≤ VDD≤ 5.5V, -5.5V ≤ VSS≤ -4.5V

VOUT = 2V, load regulation ≤ ±0.5LSB

SC

Code dependent, minimum at code 0101...
Code dependent (Note 3)
(Note 4)

DD

SS

Outputs unloaded, all digital inputs = 0V or V

DD

Outputs unloaded, all digital inputs = 0V or V

SS

CONDITIONS

SS

10

≤ -4.5V

VSS+ 0.4 VDD- 0.4

2 kΩ

VSS+ 2 V

10 50 pF

4.5 5.5 V

-5.5 0 V

DD
DD

Typical Operating Characteristics

= 33µF,

REFOUT

3 ppm/°C

0.1 LSB/V

0.2
20 mA

250 400 µA
150 200 µA

±3

DD

).

UNITS

Bits

LSB

ppm/°C

V

Ω

- 2 V

4 _______________________________________________________________________________________

5V, Low-Power, Parallel-Input,

Voltage-Output, 10-Bit DAC

__________________________________________Typical Operating Characteristics

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

OUTPUT SINK CAPABILITY vs.

OUTPUT PULL-DOWN VOLTAGE

16
14
12
10

8
6
4

OUTPUT SINK CAPABILITY (mA)

2

0

0 0.8

0.2 0.4

OUTPUT PULL-DOWN VOLTAGE (V)

REFERENCE VOLTAGE vs.

2.055

2.050

REFERENCE VOLTAGE (V)

2.045

-60 120

TEMPERATURE

-20 20 80
TEMPERATURE (°C)

80
70
60
50
40
30
20

SIGNAL-TO-NOISE RATIO (dB)

10

0

_______________________________________________________________________________________

MAX503-1

0.6

60

1.0

MAX503-4

100400-40

140

AMPLIFIER SIGNAL-TO-NOISE RATIO

REFIN = 4Vp-p

DUAL SUPPLIES (±5V)

10 1k 100k

FREQUENCY (Hz)



OUTPUT SOURCE CAPABILITY vs.

OUTPUT PULL-UP VOLTAGE

8
7
6
5
4
3
2

OUTPUT SOURCE CAPABILITY (mA)

1
0

12

04

OUTPUT PULL-UP VOLTAGE (V)

3

MAX503-2

5

SUPPLY CURRENT vs. TEMPERATURE

300
290

280

270

260

250

SUPPLY CURRENT (µA)

240

230

-60 -20 60 140

-40 0 40 80 120

10k100

20 100

TEMPERATURE (°C)

200

MAX503-7

100

GAIN (dB)

-100

-200

-300

0

1

MAX503-5

GAIN AND PHASE vs.

FREQUENCY

(G = 2)
(G = 1)

10 100

FREQUENCY (kHz)

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)

GAIN vs. FREQUENCY

4

REFIN = 4Vp-p

2
0

-2

-4

-6

GAIN (dB)

-8

-10

-12

-14
1 100 100k

GAIN

DUAL SUPPLIES (±5V)

PHASE

1k 10k

FREQUENCY (Hz)



180

MAX503-8

0

PHASE SHIFT (Degrees)

-180

800

MAX503

MAX503-3

MAX503-6

5