MAX5856AECM+D Maxim Integrated Products, MAX5856AECM+D Datasheet - Page 15

• Manufacturer Part Number: MAX5856AECM+D
• Description: IC DAC 8BIT DUAL 300MSPS 48-TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5856AECM+D

• Settling Time: 11ns
• Number Of Bits: 8
• Data Interface: Parallel
• Number Of Converters: 2
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 792mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. Typical Application Circuit
Table 4. Benefits of Interpolation
OPTION
1
2
3
DATA CLOCK OUT
DIGITAL BASEBAND
OFDM PROCESSOR
f
DATA
QAM-MAPPER
SINGLE 8-BIT BUS
= 71.6MHz
• No interpolation
• 2.6x oversample
• f DAC = f DATA = 78MHz
• No interpolation
• 8x oversample
• f DAC = f DATA = 240MHz
• Push image to f IMAGE = 210MHz
• 4x interpolation
• f DAC = 286.4MHz, f DATA = 71.6MHz
• Passband attenuation = 0.1dB
• Push image to 256MHz
SAVES I/O PINS
______________________________________________________________________________________
Dual 8-Bit, 300Msps DAC with 4x/2x/1x
SOLUTION
DATA LATCH
INTERLEAVE
DATA LATCH
DATA LATCH
8-BIT BUS
8-BIT BUS
Interpolation Filters and PLL
• Low data rate
• Low clock rate
• Lower order filter
• Filter gain/phase match
• Low data rate
• Low-order filter
• 60dB image attenuate
• Filter gain/phase match
SINGLE SUPPLY
+2.7V TO +3.3V
ADVANTAGE
INTERPOLATING
INTERPOLATING
FILTERS 4X/2X
FILTERS 4X/2X
F
CLOCK SOURCE
DAC
DIV-4
DIV-2
DIV-1
= 286.4MHz
8
8
CHA
DAC
CHB
DAC
• High-order filter
• Filter gain/phase match
• High clock rate
• High data rate
• None
MAX5856A
ENTIRE SUPPLY RANGE
SPECIFIED OVER
FS ANALOG OUT
+2.7V TO +3.3V
DISADVANTAGE
AOUT
BOUT
15