AD9709 Analog Devices, AD9709 Datasheet - Page 24

• Manufacturer Part Number: AD9709
• Description: 8-Bit, 125 MSPS Dual TxDAC+ Digital-to-Analog Converter
• Manufacturer: Analog Devices

Specifications of AD9709

• Resolution (bits): 8bit
• Dac Update Rate: 125MSPS
• Dac Settling Time: 35ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Par

AD9709
EVALUATION BOARD
GENERAL DESCRIPTION
The AD9709-EB is an evaluation board for the AD9709 8-bit
dual DAC. Careful attention to layout and circuit design,
combined with a prototyping area, allow the user to easily and
effectively evaluate the AD9709 in any application where high
resolution, high speed conversion is required.
SCHEMATICS
DVDDIN
TB1
TB1
1
2
RED
BEAD
L1
INCK2
INP31
INP32
INP33
INP34
INP35
INP36
DCASE
10
1
2
3
4
5
6
7
8
9
C9
VAL
VOLT
Figure 46. Power Decoupling and Clocks on AD9709 Evaluation Board (1)
RP15
22
RCO M
R1
R2
R3
R4
R5
R6
R7
R8
R9
BLK
BLK
INP23
INP24
INP25
INP26
INP27
INP28
INP29
INP30
BLK
DGND
DVDD
Rev. B | Page 24 of 32
10
1
2
3
4
5
6
7
8
9
RP10
BLK
22
RCO M
R1
R2
R3
R4
R5
R6
R7
R8
R9
AVDDIN
INCK1
INP10
INP11
INP12
INP13
INP14
INP9
This board allows the user flexibility to operate the AD9709 in
various configurations. Possible output configurations include
transformer coupled, resistor terminated, and single-ended and
differential outputs. The digital inputs can be used in dual port
or interleaved mode and are designed to be driven from various
word generators, with the on-board option to add a resistor
network for proper load termination. When operating the
AD9709, best performance is obtained when running the digital
supply (DVDD1/DVDD2) at 3.3 V and the analog supply
(AVDD) at 5 V.
TB1
TB1
10
1
2
3
4
5
6
7
8
9
RP9
3
4
22
RCO M
R1
R2
R3
R4
R5
R6
R7
R8
R9
INP1
INP2
INP3
INP4
INP5
INP6
INP7
INP8
RED
BEAD
L2
DCASE
10
1
2
3
4
5
6
7
8
9
RP16
22
C10
VAL
VOLT
RCO M
R1
R2
R3
R4
R5
R6
R7
R8
R9
BLK
BLK
BLK
AGND
AVDD
BLK