MAX5856AECM+D Maxim Integrated Products, MAX5856AECM+D Datasheet - Page 12

• 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

Dual 8-Bit, 300Msps DAC with 4x/2x/1x
Interpolation Filters and PLL
12
40, 46
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PIN
15
16
17
20
21
22
23
24
27
28
29
30
31
32
33
34
35
36
39
41
42
43
44
45
—
OUTNB
OUTNA
CLKXN
OUTPB
OUTPA
CLKXP
PLLEN
NAME
PGND
AGND
LOCK
PV DD
REFO
REFR
AV
PLLF
DB5
DB4
DB3
CLK
DB2
DB1
DB0
REN
IDE
CW
EP
DD
Channel B Input Data Bit 5
Channel B Input Data Bit 4
Channel B Input Data Bit 3
Clock Output/Input. CLK becomes an input when the PLL is enabled. CLK is an output when the PLL
is disabled.
Interleave Data Mode Enable. When IDE is high, data for both DAC channels is written through port A
(bits DA7–DA0). When IDE is low, channel A data is latched on the rising edge of CLK and channel B
is latched on the falling edge of CLK.
Channel B Input Data Bit 2
Channel B Input Data Bit 1
Channel B Input Data Bit 0
Active-Low Control Word Write Pulse. The control word is latched on the falling edge of CW.
PLL Lock Signal Output. High level indicates that PLL is locked to the CLK signal.
PLL Enabled Input. PLL is enabled when PLLEN is high.
Differential Clock Input Positive Terminal. Connect to PGND when the PLL is enabled. Bypass CLKXP
with a 0.01µF capacitor to PGND when CLKXN is in single-ended mode.
Differential Clock Input Negative Terminal. Connect to PV
with a 0.01µF capacitor to PGND when CLKXP is in single-ended mode.
PLL Power Supply. See Power Supplies, Bypassing, Decoupling, and Layout section.
PLL Ground
PLL Loop Filter. Connect a 4.12k resistor in series with a 100pF capacitor between PLLF and PGND.
Active-Low Reference Enable. Connect REN to AGND to activate the on-chip 1.24V reference.
Reference I/O. REFO serves as the reference input when the internal reference is disabled. If the
internal 1.24V reference is enabled, REFO serves as the output for the internal reference. When the
internal reference is enabled, bypass REFO to AGND with a 0.1µF capacitor.
Full-Scale Current Adjustment. To set the output full-scale current, connect an external resistor R
between REFR and AGND. The output full-scale current is equal to 32
Analog Power Supply. See Power Supplies Bypassing, Decoupling, and Layout section.
Channel B Negative Analog Current Output
Channel B Positive Analog Current Output
Analog Ground
Channel A Negative Analog Current Output
Channel A Positive Analog Current Output
Exposed Pad. Connect to the ground plane.
FUNCTION
Pin Description (continued)
DD
when the PLL is enabled. Bypass CLKXN
V
REFO
/ R
SET
.
SET