MAX5858A Datasheet, PDF (1/25 Pages) Maxim Integrated Products – Dual, 10-Bit, 300Msps, DAC with 4x/2x/1x Interpolation Filters and PLL

19-2999; Rev 0; 10/03
EVAALVUAAILTAIOBNLEKIT
Dual, 10-Bit, 300Msps, DAC with 4x/2x/1x
Interpolation Filters and PLL
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
73dBc 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—MAX5858AEVKit
Ordering Information
PART
TEMP RANGE
MAX5858AECM
-40°C to +85°C
*EP = Exposed paddle.
PIN-PACKAGE
48 TQFP-EP*
Pin Configuration
48 47 46 45 44 43 42 41 40 39 38 37
DA9/PD 1
DA8/DACEN 2
DA7/F2EN 3
DA6/F1EN 4
DA5/G3 5
DGND 6
DVDD 7
DA4/G2 8
DA3/G1 9
DA2/G0 10
DA1 11
DA0 12
EP
MAX5858A
36 REFO
35 REN
34 PLLF
33 PGND
32 PVDD
31 CLKXN
30 CLKXP
29 PLLEN
28 LOCK
27 CW
26 DB0
25 DB1
13 14 15 16 17 18 19 20 21 22 23 24
TQFP-EP
NOTE: EXPOSED PADDLE CONNECTED TO GND.
________________________________________________________________ Maxim Integrated Products 1
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.