Rainbow Electronics MAX5858 - Manual

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
♦ 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
PART TEMP RANGE PIN-PACKAGE
MAX5858ECM -40°C to +85°C 48 TQFP-EP*
38
26
23
1
2
3
4
5
6
7
8
9
10
11
13 14 15 16 17 18 19 20 21 22
27
28
29
30
31
32
33
34
35
36
39 40 41 42 43 44 45 46 47 48
DA9/PD
DA8/DACEN
DA7/F2EN
DA3/G1
DA4/G2
NOTE: EXPOSED PADDLE CONNECTED TO GND.
DVDD
DGND
DA5/G3
DA6/F1EN
DA2/G0
DV
DD
DGND IDE CLK DB4
CGND
CVDD
CLKXN
CLKXP
CGND
I.C.
I.C.
REFO
REFR DV
DD
OUTNA
AGND OUTPB OUTNB
AV
DD
DGND AV
DD
OUTP
A
DB2
24
DA0 12 25 DB1
37
N.C. N.C.
DB0
DB3 DB5 DB6 DB7 DB8 DB9
DA1
MAX5858
TQFP-EP
REN
CW
Pin Configuration
*EP = Exposed paddle.