max5858 Maxim Integrated Products, Inc., max5858 Datasheet

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max5858

Manufacturer Part Number
max5858
Description
Max5858 Dual, 10-bit, 300msps, Current-output Dac With 4x/2x/1x Interpolation Filters
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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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.
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.
Dual, 10-Bit, 300Msps, Current-Output DAC with
Communications
Wireless Base Stations
Direct Digital Synthesis
Instrumentation/ATE
SatCom, LMDS, MMDS, HFC, DSL, WLAN,
Point-to-Point Microwave Links
________________________________________________________________ Maxim Integrated Products
General Description
Applications
4x/2x/1x Interpolation Filters
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
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—MAX5858 EV Kit
*EP = Exposed paddle.
MAX5858ECM
2.7V Supply
75dBc SFDR at f
UMTS ACLR = 63dB at f
10
11
12
1
2
3
4
5
6
7
8
9
PART
DA8/DACEN
DA7/F2EN
DA6/F1EN
DA5/G3
DGND
DV DD
DA4/G2
DA3/G1
DA2/G0
DA1
DA0
NOTE: EXPOSED PADDLE CONNECTED TO GND.
48
13
47
14
46
15
45
16
Ordering Information
OUT
-40°C to +85°C
TEMP RANGE
44
17
TQFP-EP
MAX5858
43
18
= 20MHz
Pin Configuration
42
19
OUT
41
20
= 30.7MHz
40
21
39
22
PIN-PACKAGE
48 TQFP-EP*
Features
38
23
37
CLKXN
24
CLKXP
CGND
CGND
CV DD
REN
DB0
CW
I.C.
I.C.
36
35
34
33
32
31
30
29
28
27
26
25
1

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max5858 Summary of contents

Page 1

... 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 ± ...

Page 2

Dual, 10-Bit, 300Msps, Current-Output DAC with 4x/2x/1x Interpolation Filters ABSOLUTE MAXIMUM RATINGS AGND, DGND, CGND .........-0. DA9–DA0, DB9–DB0, CW, REN to AGND, DGND, CGND .......................................................-0.3V to +4V IDE to ...

Page 3

Dual, 10-Bit, 300Msps, Current-Output DAC with ELECTRICAL CHARACTERISTICS (continued) ( 3V, AGND = DGND = CGND = 20mA, output amplitude = 0dB FS, differential output production ...

Page 4

Dual, 10-Bit, 300Msps, Current-Output DAC with 4x/2x/1x Interpolation Filters ELECTRICAL CHARACTERISTICS (continued) ( 3V, AGND = DGND = CGND = 20mA, output amplitude = 0dB FS, differential output, ...

Page 5

Dual, 10-Bit, 300Msps, Current-Output DAC with ELECTRICAL CHARACTERISTICS (continued) ( 3V, AGND = DGND = CGND = 20mA, output amplitude = 0dB FS, differential output production ...

Page 6

Dual, 10-Bit, 300Msps, Current-Output DAC with 4x/2x/1x Interpolation Filters ELECTRICAL CHARACTERISTICS (continued) ( 3V, AGND = DGND = CGND = 20mA, output amplitude = 0dB FS, differential output, ...

Page 7

... POWER DISSIPATION vs. SAMPLING RATE 550 f = 5MHz OUT 500 450 400 NO INTERPOLATION 350 300 250 200 102 136 170 SAMPLING RATE (MHz) INTERNAL REFERENCE VOLTAGE vs. SUPPLY VOLTAGE 1.28 1.27 1.26 1.25 1.24 1.23 1.22 1.21 1.20 2.7 2.8 2.9 3.0 3.1 3.2 3.3 SUPPLY VOLTAGE (V) DYNAMIC RESPONSE FALL TIME MAX5858 toc09 200mV/div R = 50Ω L SINGLE ENDED 10ns/div 7 ...

Page 8

Dual, 10-Bit, 300Msps, Current-Output DAC with 4x/2x/1x Interpolation Filters ( ±10%, AGND = DGND = CGND = 0, external reference = 1.2V, no interpolation output +25°C, unless otherwise ...

Page 9

Dual, 10-Bit, 300Msps, Current-Output DAC with ( ±10%, AGND = DGND = CGND = 0, external reference = 1.2V, no interpolation output +25°C, unless otherwise noted.) A SPURIOUS-FREE ...

Page 10

Dual, 10-Bit, 300Msps, Current-Output DAC with 4x/2x/1x Interpolation Filters ( ±10%, AGND = DGND = CGND = 0, external reference = 1.2V, no interpolation output +25°C, unless otherwise ...

Page 11

Dual, 10-Bit, 300Msps, Current-Output DAC with ( ±10%, AGND = DGND = CGND = 0, external reference = 1.2V, no interpolation output +25°C, unless otherwise noted.) A ACLR ...

Page 12

Dual, 10-Bit, 300Msps, Current-Output DAC with 4x/2x/1x Interpolation Filters PIN NAME 10 DA2/G0 Channel A Input Data Bit 2/Channel A Gain Adjustment Bit 0 11 DA1 Channel A Input Data Bit 1 12 DA0 Channel A Input Data Bit 0 ...

Page 13

... The full-scale output current range is adjustable from 2mA to 20mA to opti- mize power dissipation and gain control. The MAX5858 accepts an input data rate to 165MHz or a DAC conversion rate of 300MHz. The inputs are latched on the rising edge of the clock whereas the out- put latches on the following rising edge ...

Page 14

... F1EN = 0, F2EN = 1 illegal. 14 ______________________________________________________________________________________ The programmable interpolation filters multiply the MAX5858 input data rate by a factor sep- arate the reconstructed waveform spectrum and the first image. The original spectral images, appearing around multiples of the DAC input data rate, are attenu- ated at least 60dB by the internal digital filters ...

Page 15

Dual, 10-Bit, 300Msps, Current-Output DAC with SINGLE 10-BIT BUS SAVES I/O PINS DIGITAL BASEBAND OFDM PROCESSOR QAM-MAPPER DATA CLOCK OUT f = 71.6MHz DATA Figure 2. Typical Application Circuit Table 4. Benefits of Interpolation OPTION SOLUTION • No interpolation 1 ...

Page 16

... This example demonstrates that 4x interpolation with digital filtering yields significant benefits in reducing system complexity, improving dynamic performance and lowering cost. Data can be written to the MAX5858 at much lower speeds while achieving image attenua- tion greater than 60dB and image separation beyond three octaves. The main benefit is in analog reconstruc- ...

Page 17

... For improved accuracy and drift performance, choose a fixed output voltage reference such as the 1.24V, 25ppm/°C MAX6520 bandgap reference. The MAX5858 accepts an input data rate up to 165MHz or the DAC conversion rate of 300MHz. The input latch the rising edge of the clock, whereas the output latches on the following rising edge ...

Page 18

... The MAX5858 can also operate in an interleave data mode. Pulling IDE high activates this mode. In inter- leave mode, data for both DAC channels is written through input port A. Channel B data is written on the falling edge of the CLK signal and then channel A data is written on the following rising edge of the CLK signal ...

Page 19

Dual, 10-Bit, 300Msps, Current-Output DAC with 1 CLKXN t CXD 1 CLKXP CW CLK DA0–DA9/ DA CONTROL WORD DB0–DB9 DB t DCSR 1–THE DIAGRAM SHOWS 4x INTERPOLATION MODE. Figure 6. Timing Diagram for Noninterleave Data Mode (IDE = Low) 1 ...

Page 20

... Analog quadrature upconverters have a DC common-mode input require- ment of typically 0.7V to 1.0V. The MAX5858 differential I/Q outputs can maintain the desired full-scale frequen- cy spectrum at the required 0.7V to 1.0V DC common- mode level when powered from a single 2.85V (±5%) supply ...

Page 21

... DAC update rate approaches 300Msps and the ambient temperature equals +85°C. The MAX5858 is packaged in a 48-pin TQFP-EP pack- age, providing greater design flexibility, increased ther- mal efficiency, and optimized AC performance of the DAC. The EP enables the implementation of grounding techniques, which are necessary to ensure highest per- formance operation ...

Page 22

Dual, 10-Bit, 300Msps, Current-Output DAC with 4x/2x/1x Interpolation Filters Intermodulation Distortion (IMD) The two-tone IMD is the ratio expressed in dBc of either out- put tone to the worst 3rd-order (or higher) IMD products. Static Performance Parameter Definitions Integral Nonlinearity ...

Page 23

Dual, 10-Bit, 300Msps, Current-Output DAC with (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, (The package drawing(s) in this data sheet may not reflect the most current specifications. ...

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