General Description

The MAX5858A dual, 10-bit, 300Msps digital-to-analog

converter (DAC) provides superior dynamic performance

in wideband communication systems. The MAX5858A

integrates two 10-bit DAC cores, 4x/2x/1x programmable

digital interpolation filters, phase-lock loop (PLL) clock

multiplier, and a 1.24V reference. The MAX5858A sup-

ports single-ended and differential modes of operation.

The MAX5858A 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/1x programmable interpolation filters feature

excellent passband distortion and noise performance.

Interpolating filters minimize the design complexity of

analog reconstruction filters while lowering the data bus

and the clock speeds of the digital interface. The PLL

multiplier generates all internal, synchronized high-

speed clock signals for interpolating filter operation and

DAC core conversion. The internal PLL helps minimize

system complexity and lower cost. To reduce the I/O pin

count, the DAC can also operate in interleave data

mode. This allows the MAX5858A to be updated on a

single 10-bit bus.

The MAX5858A features digital control of channel gain

matching to within ±0.4dB in sixteen 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 ref-

erence can be disabled and an external reference can

be applied for high-accuracy applications.

The MAX5858A 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-con-

trol operation: normal, low-power standby, and com-

plete power-down. In power-down mode, the operating

current is reduced to 1µA.

The MAX5858A 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) opera-

ting temperature range.

Applications

Communications

SatCom, LMDS, MMDS, HFC, DSL, WLAN,

Point-to-Point Microwave Links

Wireless Base Stations

Direct Digital Synthesis

Instrumentation/ATE

Features

o 10-Bit Resolution, Dual DAC

o 300Msps Update Rate

o Integrated 4x/2x/1x Interpolating Filters

o Internal PLL Multiplier

o 2.7V to 3.3V Single Supply

o Full Output Swing and Dynamic Performance at

2.7V Supply

o Superior Dynamic Performance

o Programmable Channel Gain Matching

o Integrated 1.24V Low-Noise Bandgap Reference

o Single-Resistor Gain Control

o Interleave Data Mode

o Differential Clock Input Modes

o EV Kit Available—MAX5858AEVKit

Dual, 10-Bit, 300Msps, DAC with 4x/2x/1x

Interpolation Filters and PLL

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-2999; Rev 0; 10/03

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

PART

TEMP RANGE

PIN-PACKAGE

MAX5858AECM

-40°C to +85°C

48 TQFP-EP*

DA9/PD

DA8/DACEN

DA7/F2EN

DA3/G1

DA4/G2

NOTE: EXPOSED PADDLE CONNECTED TO GND.

DVDD

DGND

DA5/G3

DA6/F1EN

DA2/G0

PGND

PVDD

CLKXN

CLKXP

PLLEN

LOCK

PLLF

REFO

DA0

DB1

DB0

DA1

TQFP-EP

REN

CW

1

2

3

4

5

6

7

8

9

10

11

12

36

35

34

33

32

31

30

29

28

27

26

25

13 14 15 16 17 18 19 20 21 22 23 24

48 47 46 45 44 43

EP

42 41 40 39 38 37

MAX5858A

Pin Configuration

*EP = Exposed paddle.