Maxim MAX5191BEEI, MAX5188BEEI Datasheet

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General Description

The MAX5188 is a dual 8-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 MAX5191 provides equal
specifications, with on-chip output resistors for voltage­output operation. Both devices are designed for 10pVs
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 may be disabled for
external reference operation.

The MAX5188/MAX5191 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
full shutdown. A full shutdown provides the lowest pos­sible power dissipation with a maximum shutdown cur­rent of 1µA. A 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 MAX5188/MAX5191 are available in a 28-pin QSOP
package and are specified for the extended (-40°C to
+85°C) temperature range. For pin-compatible 10-bit
versions, refer to the MAX5182/MAX5185 data sheet.

Applications

Signal Reconstruction Applications

Digital Signal Processing

Arbitrary Waveform Generators

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

MAX5188/MAX5191

Dual, 8-Bit, 40MHz, Current/Voltage,

Alternate-Phase Output DACs

________________________________________________________________ Maxim Integrated Products 1

19-1580; Rev 0; 12/99

Pin Configuration

Ordering Information

PART

MAX5188BEEI

MAX5191BEEI

TEMP. RANGE

-40°C to +85°C

-40°C to +85°C

PIN-PACKAGE

28 QSOP

28 QSOP

TOP VIEW

CREF1

OUT1P

OUT1N

AGND

AV

DACEN

CLK

N.C.

REN

DGND

DGND

1

2

3

4

5

DD

PD

CS

D0

MAX5188

6

MAX5191

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

D7

20

D6

19

D5

18

D4

17

D3

16

D2

15

D1

MAX5188/MAX5191

Dual, 8-Bit, 40MHz, Current/Voltage,
Alternate-Phase Output DACs

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

AV

DD

to DVDD.....................................................................±3.3V

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

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

MAX5188/MAX5191BEEI..................................-40°C to +85°C

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

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

f

OUT

= 550kHz

f

OUT

= 2.2MHz

f

OUT

= 550kHz

f

OUT

= 2.2MHz

f

OUT

= 550kHz

Ω

DAC External Output Resistor
Load

400MAX5188 only

mAFull-Scale Output Current I

FS

0.5 1 1.5MAX5188 only

µAOutput Leakage Current -1 1DACEN = 0, MAX5188 only

UNITS

Bits

LSB

LSB

LSB

LSB

ns

pVs

dBc

dB

dB

dB

nVs

pA/√Hz

LSB

mV

V

PARAMETER SYMBOL MIN TYP MAX

Full-Scale Error -20 ±4 +20

-1 +1

Differential Nonlinearity DNL -1 ±0.25 +1

Output Settling Time 25

Glitch Impulse 10

72

Spurious-Free Dynamic Range
to Nyquist

SFDR

57 70

Resolution N 8

Integral Nonlinearity INL

-1 ±0.25 +1

-70

Total Harmonic Distortion
to Nyquist

THD

-68 -63

52

Signal-to-Noise Ratio
to Nyquist

SNR

46 52

DAC-to-DAC Output Isolation -60

Clock and Data Feedthrough 50

Output Noise 10

Gain Mismatch Between DAC
Outputs

±0.5 ±1

Full-Scale Output Voltage V

FS

400

Voltage Compliance of Output -0.3 0.8

CONDITIONS

f

CLK

= 40MHz

(Note 1)

MAX5188

Guaranteed monotonic

To ±0.5LSB error band

f

CLK

= 40MHz

f

OUT

= 2.2MHz

All 0s to all 1s

f

OUT

= 2.2MHz

f

CLK

= 40MHz

f

OUT

= 2.2MHz

LSB

Zero-Scale Error

-4 +4MAX5191

STATIC PERFORMANCE

ANALOG OUTPUT

DYNAMIC PERFORMANCE

MAX5188/MAX5191

Dual, 8-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.)

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 ns

Clock Low Time t

CL

10 ns

PARAMETER SYMBOL MIN TYP MAX UNITS

Current Gain (IFS/ I

REF

) 8 mA/mA

Reference Supply Rejection 0.5 mV/V

Reference Output Drive
Capability

I

REFOUT

10 µA

Analog Power-Supply Voltage AV

DD

2.7 3.3 V

Analog Supply Current I

AVDD

2.7 5 mA

Digital Power-Supply Voltage DV

DD

2.7 3.3 V

Digital Supply Current I

DVDD

4.2 5 mA

Output Voltage Range V

REF

1.12 1.2 1.28 V

Output Voltage Temperature
Drift

TCV

REF

50 ppm/°C

Standby Current I

STANDBY

1 1.5 mA

Shutdown Current I

SHDN

0.5 1 µA

Digital Input High Voltage V

IH

2 V

Digital Input Low Voltage 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

CS Fall to CLK Rise Time

5 ns

CONDITIONS

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)

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

DD

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

DD

VIN= 0 or DV

DD

REFERENCE

POWER REQUIREMENTS

LOGIC INPUTS AND OUTPUTS

TIMING CHARACTERISTICS

Note 1: Excludes reference and reference resistor (MAX5191) tolerance.

MAX5188/MAX5191

Dual, 8-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.)

0.150

0.125

0.100

0.075

0.050

0.025

0

-0.025

-0.050
0 32 64 96 128 160 192 224 256

INTEGRAL NONLINEARITY

vs. INPUT CODE

MAX5188/91-01

INPUT CODE

INL (LSB)

0.100

0.075

0.050

0.025

0

-0.025

-0.050

-0.075
0 32 64 96 128 160 192 224 256

DIFFERENTIAL NONLINEARITY

vs. INPUT CODE

MAX5188/91-02

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

MAX5188/91-03

SUPPLY VOLTAGE (V)

ANALOG SUPPLY CURRENT (mA)

MAX5188

MAX5191

3.00

2.75

2.25

2.50

2.00

-40 35-15 10 60 85

ANALOG SUPPLY CURRENT

vs. TEMPERATURE

MAX5188/91-04

TEMPERATURE (°C)

ANALOG SUPPLY CURRENT (mA)

MAX5188

MAX5191

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

MAX5188/91-05

SUPPLY VOLTAGE (V)

DIGITAL SUPPLY CURRENT (mA)

MAX5188

MAX5191

4.00

3.75

3.25

3.50

3.00

-40 35-15 10 60 85

DIGITAL SUPPLY CURRENT

vs. TEMPERATURE

MAX5188/91-06

TEMPERATURE (°C)

DIGITAL SUPPLY CURRENT (mA)

MAX5188

MAX5191

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

MAX5188/91-07

SUPPLY VOLTAGE (V)

STANDBY CURRENT (µA)

MAX5188

MAX5191

600

590

570

560

580

550

-40 35-15 10 60 85

STANDBY CURRENT

vs. TEMPERATURE

MAX5188/91-08

TEMPERATURE (°C)

STANDBY CURRENT (µA)

MAX5188

MAX5191

3.8

3.7

3.6

3.5

3.4

2.5 4.03.0 3.5 4.5 5.0 5.5

SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE

MAX5188/91-09

SUPPLY VOLTAGE (V)

SHUTDOWN CURRENT (µA)

MAX5188

MAX5191

MAX5188/MAX5191

Dual, 8-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

1.27

1.26

MAX5188

1.25

REFERENCE VOLTAGE (V)

1.24

1.23

2.5 4.03.0 3.5 4.5 5.0 5.5

MAX5191

SUPPLY VOLTAGE (V)

OUT_P

150mV/div

INTERNAL REFERENCE VOLTAGE

1.28

1.27

MAX5188/91-11

1.26

1.25

REFERENCE VOLTAGE (V)

1.24

1.23

-40 35-15 10 60 85

DYNAMIC RESPONSE RISE TIME

vs. TEMPERATURE

MAX5188

MAX5191

TEMPERATURE (°C)

MAX5188/91-14

OUT_P

150mV/div

4

MAX5188/91-12

3

2

OUTPUT CURRENT (mA)

1

0

0 300100 200 400 500

DYNAMIC RESPONSE FALL TIME

OUTPUT CURRENT

vs. REFERENCE CURRENT

REFERENCE CURRENT (µA)

MAX5188/91-15

MAX5188/91-13

OUT_N

100mV/div

OUT_P

100mV/div

OUT_N

150mV/div

SETTLING TIME

12.5ns/div

50ns/div

MAX5188/91-16

0

-10

-20

-30

-40

-50

-60

(dBc)

-70

-80

-90

-100

-110

-120
0246

OUTPUT FREQUENCY (MHz)

OUT_N

150mV/div

FFT PLOT, DAC1

f

CLK

f

OUT

81012141618

= 40MHz
= 2.2MHz

MAX5188/91-17

20

50ns/div

(dBc)

-100

-110

-120

-10

-20

-30

-40

-50

-60

-70

-80

-90

0

0246

FFT PLOT, DAC2

f

CLK

f

OUT

81012141618

OUTPUT FREQUENCY (MHz)

= 40MHz
= 2.2MHz

MAX5188/91-18

20