MAX5856AECM+TD Maxim Integrated Products, MAX5856AECM+TD Datasheet - Page 18

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

Specifications of MAX5856AECM+TD

• 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

To disable the internal reference of the MAX5856A, con-
nect REN to AV
reference to REFO to set the full-scale output (Figure 5).
For improved accuracy and drift performance, choose a
fixed output voltage reference such as the MAX6520
bandgap reference.
Dual 8-Bit, 300Msps DAC with 4x/2x/1x
Interpolation Filters and PLL
Figure 5. MAX5856A with External Reference
Table 5. PLL Clocking Modes
18
PLLEN
1
1
1
0
0
0
0
1
______________________________________________________________________________________
F2EN
0
0
1
0
0
1
1
1
DD
MAX6520
. Apply a temperature-stable, external
F1EN
0
1
1
0
1
1
0
0
REFERENCE
EXTERNAL
AGND
1.24V
DIFFERENTIAL CLOCK
AV
DD
N/A (tie CLXP low
N/A (tie CLXP low
N/A (tie CLXP low
External Reference
and CLXN high)
and CLXN high)
and CLXN high)
f
AGND
FREQUENCY
CLKDIFF
0 to 165
0 to 300
0 to 300
R
SET
REFO
REFR
(MHz)
I
REF
f
f
CLKDIFF
CLKDIFF
f
75 to 150 (input)
CLKDIFF
0 to 165 (input)
37 to 75 (input)
FREQUENCY
f
REN
REFERENCE
CLK
BANDGAP
CLOCK
1.24V
/ 2 (output)
/ 4 (output)
(MHz)
(output)
The MAX5856A accepts an input data rate up to
165MHz or a DAC conversion rate of up to 300MHz.
The inputs are latched on the rising edge of the clock.
The outputs are latched on the following rising edge.
MAX5856A
AV
DD
10µF
Illegal
DAC RATE
f
f
f
2* f
4* f
CLKDIFF
CLKDIFF
CLKDIFF
AGND
f
f
DAC
CLK
CLK
CLK
0.1µF
SOURCE ARRAY
CURRENT-
INTERPOLATION
1x
2x
4x
1x
2x
4x
I
FS
Detailed Timing
MAX SIGNAL
BANDWIDTH
(MHz)
82
63
31
82
63
31