MAXIM MAX5182, MAX5185 Technical data

General Description

The MAX5182 is a dual, 10-bit, alternate-phase-update,
current-output digital-to-analog converter (DAC)
designed for superior performance in systems requiring
analog signal reconstruction with low distortion and
low-power operation. The MAX5185 provides equal
specifications with on-chip output resistors for voltage­output operation. Both devices are designed for 10pV-s
glitch operation, to reduce distortion and minimize
unwanted spurious signal components at the output. An
on-board +1.2V bandgap circuit provides a well-regu­lated, low-noise reference that can be disabled for
external reference operation.

The MAX5182/MAX5185 are designed to provide a high
level of signal integrity for the least amount of power dis­sipation. Both DACs operate from a +2.7V to +3.3V sin­gle supply. Additionally, these DACs have three modes
of operation: normal, low-power standby, and complete
shutdown. A full shutdown provides the lowest possible
power dissipation with a maximum shutdown current of
1µA. Fast wake-up time (0.5µs) from standby mode to
full DAC operation allows for power conservation by
activating the DACs only when required.

The MAX5182/MAX5185 are available in a 28-pin QSOP
package and are specified for the extended (-40°C to
+85°C) temperature range. For pin-compatible 8-bit
versions, refer to the MAX5188/MAX5191 data sheet.

Applications

Signal Reconstruction

Digital Signal Processing

Arbitrary Waveform Generators (AWGs)

Imaging Applications

Features

♦ +2.7V to +3.3V Single-Supply Operation

♦ Wide Spurious-Free Dynamic Range: 70dB at

f

OUT

= 2.2MHz

♦ Fully-Differential Outputs for Each DAC

♦ ±0.5% FSR Gain Mismatch Between DAC Outputs

♦ Low-Current Standby or Full-Shutdown Modes

♦ Internal +1.2V Low-Noise Bandgap Reference

♦ Small 28-Pin QSOP Package

MAX5182/MAX5185

Dual, 10-Bit, 40MHz Current/Voltage

Alternate-Phase Output DACs

________________________________________________________________ Maxim Integrated Products 1

19-1578; Rev 3; 12/01

PART

MAX5182BEEI

-40°C to +85°C

TEMP. RANGE PIN-PACKAGE

28 QSOP

Pin Configuration

Ordering Information

MAX5185BEEI

-40°C to +85°C 28 QSOP

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

TOP VIEW

CREF1

OUT1P

OUT1N

AGND

AV

DACEN

CLK

N.C.

REN

1

2

3

4

5

DD

PD

CS

D0

D1

D2

MAX5182

6

MAX5185

7

8

9

10

11

12

13

14

QSOP

28

CREF2

27

OUT2P

26

OUT2N

25

REFO

24

REFR

23

DGND

22

DV

DD

21

D9

20

D8

19

D7

18

D6

17

D5

16

D4

15

D3

LSB

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(AVDD= DVDD= +3V ±10%, AGND = DGND = 0, f

CLK

= 40MHz, IFS= 1mA, 400Ω differential output, CL= 5pF, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.)

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.

AVDD, DVDDto AGND, DGND .................................-0.3V to +6V

Digital Inputs to DGND.............................................-0.3V to +6V

OUT1P, OUT1N, OUT2P, OUT2N, CREF1,

CREF2 to AGND ...................................................-0.3V to +6V

V

REF

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

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

AVDDto DVDD.................................................................... ±3.3V

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

Continuous Power Dissipation (T

A

= +70°C)

28-Pin QSOP (derate 9.00mW/°C above +70°C)....... 725mW

Operating Temperature Ranges

MAX518_BEEI................................................-40°C to +85°C

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

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

MAX5182/MAX5185

dB

f

CLK

= 40MHz

Full-Scale Output Current I

FS

0.5 1 1.5

mA

DAC External Output Resistor
Load

R

L

400

Ω

MAX5182 only

MAX5182 only

PARAMETER SYMBOL MIN TYP MAX UNITS

Full-Scale Error

-40 ±15 +40

LSB

-2 +2

Differential Nonlinearity DNL

-1 ±0.5 +1

LSB

Output Settling Time

25

ns

Glitch Impulse

10

pVs

Spurious-Free Dynamic Range
to Nyquist

SFDR

72

dBc

57 70

Resolution N

10

Bits

Integral Nonlinearity INL

-2 ±0.5 +2

LSB

Total Harmonic Distortion to
Nyquist

THD

-70
dB

-68 -63

Signal-to-Noise Ratio to
Nyquist

SNR

61

dB

56 59

DAC-to-DAC Ouput Isolation

-60

dB

Clock and Data Feedthrough

50

nVs

Output Noise

10

pA/√Hz

Gain Mismatch Between
DAC Outputs

±0.5 ±1

% FSR

Full-Scale Output Voltage V

FS

400

mV

Voltage Compliance of Output

-0.3 0.8

V

Output Leakage Current

-1 1

µA

CONDITIONS

f

CLK

= 40MHz

(Note 1)

MAX5182

Guaranteed monotonic

To ±0.5LSB error band

f

CLK

= 40MHz

f

OUT

= 2.2MHz

All 0s to all 1s

f

OUT

= 2.2MHz, TA= +25°C

DACEN = 0, MAX5182 only

-8 +8

MAX5185

Zero-Scale Error

STATIC PERFORMANCE

DYNAMIC PERFORMANCE

ANALOG OUTPUT

Dual, 10-Bit, 40MHz Current/Voltage
Alternate-Phase Output DACs

f

OUT

= 550kHz

f

OUT

= 2.2MHz, TA= +25°C

f

OUT

= 550kHz

f

OUT

= 2.2MHz, TA= +25°C

f

OUT

= 550kHz

f

OUT

= 2.2MHz, TA= +25°C

MAX5182/MAX5185

Dual, 10-Bit, 40MHz Current/Voltage

Alternate-Phase Output DACs

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= +3V ±10%, AGND = DGND = 0, f

CLK

= 40MHz, IFS= 1mA, 400Ω differential output, CL= 5pF, TA= T

MIN

to T

MAX

,

unless otherwise noted. Typical values are at T

A

= +25°C.)

Note 1: Excludes reference and reference resistor (MAX5185) tolerance.

CS Fall to CLK Rise Time

5

ns

CS Fall to CLK Fall Time

5

ns

DACEN Rise Time to V

OUT_

0.5

µs

PD Fall Time to V

OUT_

50

µs

Clock Period t

CLK

25

ns

Clock High Time t

CH

10 0

ns

Clock Low Time t

CL

10

ns

Digital Input Voltage High V

IH

2

V

Digital Input Voltage Low V

IL

0.8

V

Digital Input Current I

IN

±1

µA

Digital Input Capacitance C

IN

10

pF

DAC1 DATA to CLK Rise
Setup Time

t

DS1

10

ns

DAC2 DATA to CLK Fall
Setup Time

t

DS2

10

ns

DAC1 CLK Rise to DATA
Hold Time

t

DH1

0

ns

DAC2 CLK Fall to DATA
Hold Time

t

DH2

0

ns

VIN= 0 or DV

DD

Output Voltage Temperature Drift TCV

REF

50

ppm/°C

Reference Output Drive
Capability

I

REFOUT

10

µA

Reference Supply Rejection

0.5

mV/V

Current Gain (IFS/ I

REF

)

8

mA/mA

Analog Power-Supply Voltage AV

DD

2.7 3.3

V

Analog Supply Current I

AVDD

2.7 5.0

mA

Digital Power-Supply Voltage DV

DD

2.7 3.3

V

Digital Supply Current I

DVDD

4.2 5.0

mA

Standby Current I

STANDBY

1.0 1.5

mA

Shutdown Current I

SHDN

0.5 1

µA

PD = 0, DACEN = 1, digital inputs at 0
or DV

DD

PD = 0, DACEN = 1, digital inputs at 0
or DV

DD

PD = 0, DACEN = 0, digital inputs at 0
or DV

DD

PD = 1, DACEN = X, digital inputs at 0
or DV

DD

(X = don’t care)

PARAMETER SYMBOL MIN TYP MAX UNITSCONDITIONS

Output Voltage Range V

REF

2.7 1.2 1.28 V

REFERENCE

POWER REQUIREMENTS

LOGIC INPUTS AND OUTPUTS

TIMING CHARACTERISTICS

MAX5182/MAX5185

Dual, 10-Bit, 40MHz Current/Voltage
Alternate-Phase Output DACs

4 _______________________________________________________________________________________

Typical Operating Characteristics

(AVDD= DVDD= +3V, AGND = DGND = 0, 400Ω differential output, IFS= 1mA, CL= 5pF, TA= +25°C, unless otherwise noted.)

0.6

0.5

0.4

0.3

0.2

0.1

0

-0.1

-0.2
0 128 256 384 512 640 768 896 1024

INTEGRAL NONLINEARITY

vs. INPUT CODE

MAX5182/85-01

INPUT CODE

INL (LSB)

0.4

0.3

0.2

0.1

0

-0.1

-0.2

-0.3
0 128 256 384 512 640 768 896 1024

DIFFERENTIAL NONLINEARITY

vs. INPUT CODE

MAX5182/85-02

INPUT CODE

DNL (LSB)

3.00

2.75

2.50

2.25

2.00

2.5 4.03.0 3.5 4.5 5.0 5.5

ANALOG SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX5182/85-03

SUPPLY VOLTAGE (V)

ANALOG SUPPLY CURRENT (mA)

MAX5182

MAX5185

3.00

2.75

2.25

2.50

2.00

-40 35-15 10 60 85

ANALOG SUPPLY CURRENT

vs. TEMPERATURE

MAX5182/85-04

TEMPERATURE (°C)

ANALOG SUPPLY CURRENT (mA)

MAX5182

MAX5185

10

8

6

4

2

0

2.5 4.03.0 3.5 4.5 5.0 5.5

DIGITAL SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX5182/85-05

SUPPLY VOLTAGE (V)

DIGITAL SUPPLY CURRENT (mA)

MAX5182

MAX5185

4.00

3.75

3.25

3.50

3.00

-40 35-15 10 60 85

DIGITAL SUPPLY CURRENT

vs. TEMPERATURE

MAX5182/85-06

TEMPERATURE (°C)

DIGITAL SUPPLY CURRENT (mA)

MAX5182

MAX5185

620

610

600

580

590

570

560

2.5 4.03.0 3.5 4.5 5.0 5.5

STANDBY CURRENT

vs. SUPPLY VOLTAGE

MAX5182/85-07

SUPPLY VOLTAGE (V)

STANDBY CURRENT (µA)

MAX5182

MAX5185

600

590

570

560

580

550

-40 35-15 10 60 85

MAX5182/MAX5185

STANDBY CURRENT vs. TEMPERATURE

MAX5182/85-08

TEMPERATURE (°C)

STANDBY CURRENT (mA)

MAX5182

MAX5185

0.8

0.7

0.6

0.5

0.4

2.5 4.03.0 3.5 4.5 5.0 5.5

SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE

MAX5182/85-09

SUPPLY VOLTAGE (V)

SHUTDOWN CURRENT (µA)

MAX5182

MAX5185

MAX5182/MAX5185

Dual, 10-Bit, 40MHz Current/Voltage

Alternate-Phase Output DACs

_______________________________________________________________________________________ 5

)

Typical Operating Characteristics (continued)

(AVDD= DVDD= +3V, AGND = DGND = 0, 400Ω differential output, IFS= 1mA, CL= 5pF, TA= +25°C, unless otherwise noted.)

INTERNAL REFERENCE VOLTAGE

vs. SUPPLY VOLTAGE

1.28

INTERNAL REFERENCE VOLTAGE

vs. TEMPERATURE

1.28

4

OUTPUT CURRENT

vs. REFERENCE CURRENT

1.27

1.26

MAX5182

1.25

REFERENCE VOLTAGE (V)

1.24

1.23

2.5 4.03.0 3.5 4.5 5.0 5.5

MAX5185

SUPPLY VOLTAGE (V)

DYNAMIC RESPONSE RISE TIME

MAX5182/85-11

1.27

1.26

1.25

REFERENCE VOLTAGE (V)

1.24

1.23

MAX5182/85-14

OUT_P
150mV/
div

OUT_N
150mV/
div

MAX5182

MAX5185

-40 35-15 10 60 85
TEMPERATURE (°C)

DYNAMIC RESPONSE FALL TIME

MAX5182/85-12

3

2

OUTPUT CURRENT (mA)

1

0

MAX5182/85-15

OUT_P
150mV/
div

OUT_N
150mV/
div

0 125 250 375 500

REFERENCE CURRENT (µA)

SETTLING TIME

MAX5182/85-13

MAX5182/85-16

OUT_N
100mV/
div

OUT_P
100mV/
div

0

-10

-20

-30

-40

-50

-60

(dBc)

-70

-80

-90

-100

-110

-120
0246

50ns/div

50ns/div

12.5ns/div

SPURIOUS-FREE DYNAMIC RANGE

FFT PLOT, DAC1

f

OUT

f

CLK

81012141618

OUTPUT FREQUENCY (MHz)

= 2.2MHz
= 40MHz

20

MAX5181/4toc17

0

-10

-20

-30

-40

-50

-60

(dBc)

-70

-80

-90

-100

-110

-120
0246

FFT PLOT, DAC2

f

OUT

f

CLK

81012141618

OUTPUT FREQUENCY (MHz)

= 2.2MHz

= 40MHz

20

MAX5182/85-18

100

vs. CLOCK FREQUENCY

90

80

70

SFDR (dBc)

60

50

40

10 302515 20 35 40 45 50 55 60

CLOCK FREQUENCY (MHz

DAC2

MAX5182/85-19

DAC1