Rainbow Electronics MAX5858 User Manual

General Description

The MAX5858 dual, 10-bit, 300Msps digital-to-analog con­verter (DAC) provides superior dynamic performance in
wideband communication systems. The MAX5858 inte­grates two 10-bit DAC cores, 2x/4x programmable digital
interpolation filters, and a 1.24V reference. The MAX5858
supports single-ended and differential modes of operation.
The MAX5858 dynamic performance is maintained over
the entire power-supply operating range of 2.7V to 3.3V.
The analog outputs support a compliance voltage of -1.0V
to +1.25V.

The 4x/2x programmable interpolation filters feature
excellent passband distortion and noise performance.
Interpolating filters minimize the design complexity of
analog reconstruction filters while lowering data bus
and clock speeds of the digital interface. To reduce the
I/O pin count, the DAC can also operate in interleave
data mode. This allows the MAX5858 to be updated on
a single 10-bit bus.

The MAX5858 features digital control of channel gain
matching to within ±0.4dB in 16 0.05dB steps. Channel
matching improves sideband suppression in analog
quadrature modulation applications. The on-chip 1.24V
bandgap reference includes a control amplifier that
allows external full-scale adjustments of both channels
through a single resistor. The internal reference can be
disabled and an external reference may be applied for
high-accuracy applications.

The MAX5858 features full-scale current outputs of 2mA
to 20mA and operates from a 2.7V to 3.3V single sup­ply. The DAC supports three modes of power-control
operation: normal, low-power standby, and complete
power-down. In power-down mode, the operating
current is reduced to 1µA.

The MAX5858 is packaged in a 48-pin TQFP with exposed
paddle (EP) for enhanced thermal dissipation and is spec­ified for the extended (-40°C to +85°C) temperature range.

Applications

Communications

SatCom, LMDS, MMDS, HFC, DSL, WLAN,
Point-to-Point Microwave Links

Wireless Base Stations

Direct Digital Synthesis

Instrumentation/ATE

Features

♦ 10-Bit Resolution, Dual DAC

♦ 300Msps Update Rate

♦ Integrated 4x/2x Interpolating Filters

♦ 2.7V to 3.3V Single Supply

♦ Full Output Swing and Dynamic Performance at

2.7V Supply

♦ Superior Dynamic Performance

75dBc SFDR at f

OUT

= 20MHz

UMTS ACLR = 63dB at f

OUT

= 30.7MHz

♦ Programmable Channel-Gain Matching

♦ Integrated 1.24V Low-Noise Bandgap Reference

♦ Single-Resistor Gain Control

♦ Interleave Data Mode

♦ Differential Clock Input Modes

♦ EV Kit Available—MAX5858 EV Kit

MAX5858

Dual, 10-Bit, 300Msps, Current-Output DAC with

4x/2x/1x Interpolation Filters

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-2879; Rev 0; 7/03

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.

EVALUATION KIT

AVAILABLE

Pin Configuration

*EP = Exposed paddle.

PART TEMP RANGE PIN-PACKAGE

MAX5858ECM -40°C to +85°C 48 TQFP-EP*

39404142434445464748

38

37

DD

DD

AV

DV

DGND

OUTPA

DB7

DB6

OUTNA

MAX5858

DB5

TQFP-EP

1

DA9/PD

2

DA8/DACEN

3

DA7/F2EN

4

DA6/F1EN

5

DA5/G3

6

DGND

DV

7

DD

8

DA4/G2

9

DA3/G1

10

DA2/G0

11

DA1

12

DA0

NOTE: EXPOSED PADDLE CONNECTED TO GND.

DB8

DB9

13 14 15 16 17 18 19 20 21 22

AGND

DD

DV

OUTPB

DGND

OUTNB

CLK

DD

N.C.

N.C.

REFR

AV

IDE

DB4

REFO

36

REN

35

I.C.

34

CGND

33

CV

32

DD

CLKXN

31

CLKXP

30

CGND

29

I.C.

28

CW

27

DB0

26

DB1

25

DB3

DB2

23

24

MAX5858

Dual, 10-Bit, 300Msps, Current-Output DAC with
4x/2x/1x Interpolation Filters

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(AVDD= DVDD= CVDD= 3V, AGND = DGND = CGND = 0, f

DAC

= 165Msps, no interpolation, external reference, V

REF

= 1.2V,

I

FS

= 20mA, output amplitude = 0dB FS, differential output, TA= T

MIN

to T

MAX

, unless otherwise noted. TA> +25°C guaranteed by

production test. T

A

< +25°C guaranteed by design and characterization. Typical values are at TA= +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, DVDD, CVDDto AGND, DGND, CGND .........-0.3V to +4V

DA9–DA0, DB9–DB0, CW, REN to AGND,

DGND, CGND .......................................................-0.3V to +4V

IDE to AGND, DGND, CGND...................-0.3V to (DV

DD

+ 0.3V)

CLKXN, CLKXP to CGND.........................................-0.3V to +4V

OUTP_, OUTN_ to AGND.......................-1.25V to (AV

DD

+ 0.3V)

CLK to DGND ..........................................-0.3V to (DVDD+ 0.3V)

REFR, REFO to AGND .............................-0.3V to (AV

DD

+ 0.3V)

AGND to DGND, DGND to CGND,

AGND to CGND..................................................-0.3V to +0.3V

Maximum Current into Any Pin

(excluding power supplies) ............................................±50mA

Continuous Power Dissipation (T

A

= +70°C)

48-Pin TQFP-EP (derate 36.2mW/°C above +70°C) ....2.898W

Operating Temperature Range ...........................-40°C to +85°C

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

Junction Temperature......................................................+150°C

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

STATIC PERFORMANCE

Resolution 10 Bits

Integral Nonlinearity INL RL = 0 -1.25 ±0.5 +1.25 LSB

Differential Nonlinearity DNL Guaranteed monotonic, RL = 0 -0.75 ±0.25 +0.75 LSB

Offset Error V

Gain Error (See Gain Error
Parameter Definitions Section)

DYNAMIC PERFORMANCE

Maximum Output DAC Update
Rate

Glitch Impulse 5 pV-s

Spurious-Free Dynamic Range to
Input Update Rate Nyquist

Spurious-Free Dynamic Range
Within a Window

Multitone Power Ratio, 8 Tones,
300kHz Spacing

Adjacent Channel Leakage Ratio
with UMTS

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

OS

GE

f

DAC

SFDR

SFDR

MTPR f

ACLR f

Internal reference (Note 1) -9 ±1.5 +10

External reference -5 ±1.5 +7

f

= 165Msps

DAC

f

= 300Msps,

DAC

2x interpolation

f

= 200Msps, 2x interpolation;

DAC

= 40MHz, span = 20MHz

f

OUT

= 165Msps, f

f

DAC

span = 4MHz

= 165Msps, f

DAC

=122.88Msps, f

DAC

OUT

OUT

OUT

-0.5 ±0.1 +0.5 LSB

300 Msps

f

= 5MHz,

OUT

T

≥ +25°C

A

f

= 20MHz 75

OUT

f

= 40MHz 65

OUT

= 60MHz 63

f

OUT

f

= 5MHz 76

OUT

f

= 40MHz 78

OUT

f

= 60MHz 70

OUT

= 5MHz,

= 20MHz 76 dBc

= 30.72MHz 63 dB

69 76

85

78 85

%

dBc

dBc

MAX5858

Dual, 10-Bit, 300Msps, Current-Output DAC with

4x/2x/1x Interpolation Filters

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= CVDD= 3V, AGND = DGND = CGND = 0, f

DAC

= 165Msps, no interpolation, external reference, V

REF

= 1.2V,

I

FS

= 20mA, output amplitude = 0dB FS, differential output, TA= T

MIN

to T

MAX

, unless otherwise noted. TA> +25°C guaranteed by

production test. T

A

< +25°C guaranteed by design and characterization. Typical values are at TA= +25°C.)

Total Harmonic Distortion to
Nyquist

Noise Spectral Density N

Output Channel-to-Channel
Isolation

Gain Mismatch Between
Channels

Phase Mismatch Between
Channels

Wideband Output Noise 50 pA/√Hz

ANALOG OUTPUT

Full-Scale Output Current Range I

Output Voltage Compliance
Range

Output Leakage Current Power-down or standby mode -5 +5 µA

REFERENCE

Reference Output Voltage V

Output-Voltage Temperature Drift TCV

Reference Output Drive
Capability

Reference Input Voltage Range REN = AV

Reference Supply Rejection 0.2 mV/V

Current Gain IFS/I

INTERPOLATION FILTER (2x interpolation)

Passband Width

Stopband Rejection

Group Delay 18

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

THD f

D

FS

REF0

REF

REF

f

/

OUT

0.5f

DAC

= 165Msps; f

DAC

f

= 165Msps; f

DAC

= 5MHz 80 dB

f

OUT

= 5MHz ±0.05 dB

f

OUT

= 5MHz ±0.15 Degrees

f

OUT

REN = AGND 1.14 1.24 1.32 V

DD

-0.005dB 0.398

-0.01dB 0.402

-0.1dB 0.419

-3dB 0.478

0.604f

0.600f

0.594f

0.532f

/ 2 to 1.396f

DAC

/ 2 to 1.400f

DAC

/ 2 to 1.406f

DAC

/ 2 to 1.468f

DAC

OUT

OUT

= 5MHz -72 dB

= 5MHz -143 dBm/Hz

220mA

-1.00 +1.25 V

±50 ppm/°C

50 µA

0.10 1.25 V

32 mA/mA

/ 2 74

DAC

/ 2 62

DAC

/ 2 53

DAC

/ 2 14

DAC

MHz/

MHz

dB

Data

clock

cycles

Impulse Response Duration 22

Data

clock

cycles

MAX5858

Dual, 10-Bit, 300Msps, Current-Output DAC with
4x/2x/1x Interpolation Filters

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= CVDD= 3V, AGND = DGND = CGND = 0, f

DAC

= 165Msps, no interpolation, external reference, V

REF

= 1.2V,

I

FS

= 20mA, output amplitude = 0dB FS, differential output, TA= T

MIN

to T

MAX

, unless otherwise noted. TA> +25°C guaranteed by

production test. T

A

< +25°C guaranteed by design and characterization. Typical values are at TA= +25°C.)

INTERPOLATION FILTER (4x interpolation)

Passband Width

Stopband Rejection

Group Delay 22

Impulse Response Duration 27

LOGIC INPUTS (IDE, CW, REN, DA9–DA0, DB9–DB0)

Digital Input-Voltage High V

Digital Input-Voltage Low V

Digital Input-Current High I

Digital Input-Current Low I

Digital Input Capacitance C

DIGITAL OUTPUTS (CLK)

Digital Output-Voltage High V

Digital Output-Voltage Low V

DIFFERENTIAL CLOCK INPUT (CLKXP, CLKXN)

Clock Input Internal Bias CV

Differential Clock Input Swing 0.5 V
Clock Input Impedance Single-ended clock drive 5 kΩ

TIMING CHARACTERISTICS

Output Settling Time t

Output Rise Time 10% to 90% (Note 2) 2.5 ns

Output Fall Time 90% to 10% (Note 2) 2.5 ns

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

-0.005dB 0.200

f

0.5f

OUT

OH

DATA

-0.01dB 0.201

/

DAC

-0.1dB 0.210

-3dB 0.239

0.302f

0.300f

0.297f

0.266f

IH

IL

VIH = 2V -1 +1 µA

H

VIL = 0.8V -1 +1 µA

IL

IN

I

SOURCE

I

OL

s

SINK

No interpolation 165

2x interpolation 150Input Data Rate f

4x interpolation 75

To ±0.1% error band (Note 2) 11 ns

/ 2 to 1.698f

DAC

/ 2 to 1.700f

DAC

/ 2 to 1.703 f

DAC

/ 2 to 1.734f

DAC

= 0.5mA, Figure 1

= 0.5mA, Figure 1

/ 2 74

DAC

/ 2 63

DAC

/ 2 53

DAC

/ 2 14

DAC

2V

3pF

0.9 ×

DV

DD

DD

0.8 V

0.1 ×

DV

DD

/ 2 V

MHz/

MHz

dB

Data

clock

cycles

Data

clock

cycles

V

V

P-P

Msps

MAX5858

Dual, 10-Bit, 300Msps, Current-Output DAC with

4x/2x/1x Interpolation Filters

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= CVDD= 3V, AGND = DGND = CGND = 0, f

DAC

= 165Msps, no interpolation, external reference, V

REF

= 1.2V,

I

FS

= 20mA, output amplitude = 0dB FS, differential output, TA= T

MIN

to T

MAX

, unless otherwise noted. TA> +25°C guaranteed by

production test. T

A

< +25°C guaranteed by design and characterization. Typical values are at TA= +25°C.)

DATA-to-CLK Rise Setup Time t

DATA-to-CLK Rise Hold Time t

DATA-to-CLK Fall Setup Time t

DATA-to-CLK Fall Hold Time t
Control Word to CW Fall Setup

Time

Control Word to CW Fall Hold
Time

CW High Time 5ns
CW Low Time 5ns

DACEN Rise-to-V

PD Fall-to-V

Clock Frequency at
CLKXP/CLKXN Input

CLKXP/CLKXN Differential Clock
Input to CLK Output Delay

Minimum CLKXP/CLKXN Clock
High Time

Minimum CLKXP/CLKXN Clock
Low Time

POWER REQUIREMENTS

Analog Power-Supply Voltage AV

Analog Supply Current I

Digital Power-Supply Voltage DV

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

(Note 3) 1.5 ns

(Note 3) 0.4 ns

(Note 3) 1.7 ns

(Note 3) 1.1 ns

External reference 0.5 ms

Differential clock 300 MHz

DD

(Note 4) 45 49 mA

DD

Stable t

OUT

Stable t

OUT

DCSR

DCHR

DCSF

DCHF

t

CWS

t

CWH

STB

PDSTB

f

DAC

t

CXD

t

CXH

t

CXL

AVDD

2.5 ns

2.5 ns

0.7 µs

4.6 ns

1.5 ns

1.5 ns

2.7 3.3 V

2.7 3.3 V

MAX5858

Dual, 10-Bit, 300Msps, Current-Output DAC with
4x/2x/1x Interpolation Filters

6 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AVDD= DVDD= CVDD= 3V, AGND = DGND = CGND = 0, f

DAC

= 165Msps, no interpolation, external reference, V

REF

= 1.2V,

I

FS

= 20mA, output amplitude = 0dB FS, differential output, TA= T

MIN

to T

MAX

, unless otherwise noted. TA> +25°C guaranteed by

production test. T

A

< +25°C guaranteed by design and characterization. Typical values are at TA= +25°C.)

Note 1: Including the internal reference voltage tolerance.
Note 2: Measured single ended with 50Ω load and complementary output connected to ground.
Note 3: Guaranteed by design, not production tested.
Note 4: f

OUT

= 5MHz.

Note 5: All digital inputs at 0 or DV

DD

. Clock signal disabled.

Figure 1. Load Test Circuit for CLK Outputs

Digital Supply Current (Note 4) I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Clock Power-Supply Voltage CV

Clock Supply Current (Note 4) I

f

DAC

DVDD

CVDD

DD

f

DAC

f

DAC

f

DAC

f

DAC

f

DAC

interpolation

Standby Current I

STANDBY

Power-Down Current I

Total Power Dissipation P

PD

TOT

(Note 5) 4.4 4.8 mA

(Note 5) 1 µA

DAC

f

DAC

f

DAC

= 60Msps

= 165Msps

= 200Msps

= 60Msps 25

= 165Msps 69 80

= 200Msps, 2x interpolation or 4x

= 60Msps

= 165Msps

= 200Msps

No interpolation 34

2x interpolation 75

4x interpolation 72

No interpolation 54 61

2x interpolation 146

4x interpolation 140

2x interpolation 172 186

4x interpolation 165 178

2.7 3.3 V

80 94

No interpolation 312

2x interpolation 435f

4x interpolation 426

No interpolation 504 570

2x interpolation 780

4x interpolation 762

2x interpolation 891

4x interpolation 870

mA

mA

mW

TO OUTPUT

PIN

5pF

0.5mA

1.6V

0.5mA

MAX5858

Dual, 10-Bit, 300Msps, Current-Output DAC with

4x/2x/1x Interpolation Filters

_______________________________________________________________________________________ 7

Typical Operating Characteristics

(AVDD= DVDD= CVDD= 3V ±10%, AGND = DGND = CGND = 0, external reference = 1.2V, no interpolation, IFS= 20mA, differential
output, T

A

= +25°C, unless otherwise noted.)

INL (LSB)

INTEGRAL NONLINEARITY

vs. DIGITAL INPUT CODE

0.5

0.4

0.3

0.2

0.1

0

-0.1

-0.2

-0.3

-0.4

-0.5
0 150 300 450 600 750 900 1050

DIGITAL INPUT CODE

POWER DISSIPATION

vs. SAMPLING RATE

1200

f

= 5MHz

OUT

1000

800

600

POWER DISSIPATION (mW)

400

200

0 300

2x INTERPOLATION

4x INTERPOLATION

10050 150 200 250

SAMPLING RATE (MHz)

RL = 0

MAX5858 toc01

MAX5858 toc04

DIFFERENTIAL NONLINEARITY

vs. DIGITAL INPUT CODE

0.30

0.20

0.10

0

INL (LSB)

-0.10

-0.20

-0.30
0 150 300 450 600 750 900 1050

DIGITAL INPUT CODE

POWER DISSIPATION

vs. SUPPLY VOLTAGE

1200

4x INTERPOLATION

= 200MHz

f

1000

POWER DISSIPATION (mW)

CLK

= 5MHz

f

OUT

800

600

400

200

2.7 3.33.2
SUPPLY VOLTAGE (V)

2x INTERPOLATION

= 200MHz

f

CLK

= 5MHz

f

OUT

NO INTERPOLATION

= 165MHz

f

CLK

= 5MHz

f

OUT

2.92.8 3.0 3.1

RL = 0

MAX5858 toc02

MAX5858 toc05

POWER DISSIPATION

vs. SAMPLING RATE

550

f

= 5MHz

OUT

500

450

400

350

300

POWER DISSIPATION (mW)

250

200

NO INTERPOLATION

0 170

6834 102 136

SAMPLING RATE (MHz)

INTERNAL REFERENCE VOLTAGE

vs. SUPPLY VOLTAGE

1.28

1.27

1.26

1.25

1.24

1.23

1.22

INTERNAL REFERENCE VOLTAGE (V)

1.21

1.20

2.7 3.33.2

2.92.8 3.0 3.1

SUPPLY VOLTAGE (V)

MAX5858 toc03

MAX5858 toc06

INTERNAL REFERENCE VOLTAGE

vs. TEMPERATURE

1.28

1.27

1.26

1.25

1.24

1.23

1.22

INTERNAL REFERENCE VOLTAGE (V)

1.21

1.20

-40 85

10-15 35 60

TEMPERATURE (°C)

MAX5858 toc07

DYNAMIC RESPONSE RISE TIME

10ns/div

MAX5858 toc08

RL = 50Ω
SINGLE ENDED

200mV/div

DYNAMIC RESPONSE FALL TIME

RL = 50Ω
SINGLE ENDED

10ns/div

MAX5858 toc09

200mV/div