MAX5858 Datasheet, PDF (1/23 Pages) Maxim Integrated Products – Dual, 10-Bit, 300Msps, Current-Output DAC with 4x/2x/1x Interpolation Filters

19-2879; Rev 0; 7/03
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Dual, 10-Bit, 300Msps, Current-Output DAC with
4x/2x/1x Interpolation Filters
General Description
The MAX5858 dual, 10-bit, 300Msps digital-to-analog con-
verter (DAC) provides superior dynamic performance in
wideband communication systems. The MAX5858 inte-
grates 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 sup-
ply. 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 spec-
ified 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
o 10-Bit Resolution, Dual DAC
o 300Msps Update Rate
o Integrated 4x/2x Interpolating Filters
o 2.7V to 3.3V Single Supply
o Full Output Swing and Dynamic Performance at
2.7V Supply
o Superior Dynamic Performance
75dBc SFDR at f_OUT = 20MHz
UMTS ACLR = 63dB at f_OUT = 30.7MHz
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—MAX5858 EV Kit
Ordering Information
PART
MAX5858ECM
*EP = Exposed paddle.
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
48 TQFP-EP*
Pin Configuration
48 47 46 45 44 43 42 41 40 39 38 37
1 DA9/PD
2 DA8/DACEN
3 DA7/F2EN
4 DA6/F1EN
5 DA5/G3
6 DGND
7 DVDD
8 DA4/G2
9 DA3/G1
10 DA2/G0
11 DA1
12 DA0
MAX5858
REFO 36
REN 35
I.C. 34
CGND 33
CVDD 32
CLKXN 31
CLKXP 30
CGND 29
I.C. 28
CW 27
DB0 26
DB1 25
13 14 15 16 17 18 19 20 21 22 23 24
TQFP-EP
NOTE: EXPOSED PADDLE CONNECTED TO GND.
________________________________________________________________ Maxim Integrated Products 1
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