AD5314 Analog Devices, AD5314 Datasheet - Page 20

• Manufacturer Part Number: AD5314
• Manufacturer: Analog Devices

Specifications of AD5314

• Resolution (bits): 10bit
• Dac Update Rate: 143kSPS
• Dac Settling Time: 7µs
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Voltage Out
• Dac Input Format: Ser,SPI

AD5304/AD5314/AD5324
POWER SUPPLY BYPASSING AND GROUNDING
In any circuit where accuracy is important, careful consideration of
the power supply and ground return layout helps to ensure the
rated performance. The printed circuit board on which the
AD5304/AD5314/AD5324 is mounted is designed so that the
analog and digital sections are separated and confined to certain
areas of the board. If the AD5304/AD5314/AD5324 are in a
system where multiple devices require an AGND-to-DGND
connection, the connection is made at one point only. The star
ground point is established as close as possible to the device. The
AD5304/AD5314/AD5324 has ample supply bypassing of 10 μF in
parallel with 0.1 μF on the supply located as close to the package as
possible, ideally right up against the device. The 10 μF capacitors
are the tantalum bead type. The 0.1 μF capacitor has low effective
series resistance (ESR) and effective series inductance (ESI), like
Table 7. Overview of AD53xx Serial Devices
Part No.
SINGLES
AD5300
AD5310
AD5320
AD5301
AD5311
AD5321
DUALS
AD5302
AD5312
AD5322
AD5303
AD5313
AD5323
QUADS
AD5304
AD5314
AD5324
AD5305
AD5315
AD5325
AD5306
AD5316
AD5326
AD5307
AD5317
AD5327
OCTALS
AD5308
AD5318
AD5328
Resolution
8
10
12
8
10
12
8
10
12
8
10
12
8
10
12
8
10
12
8
10
12
8
10
12
8
10
12
No. of DACs
1
1
1
1
1
1
2
2
2
2
2
2
4
4
4
4
4
4
4
4
4
4
4
4
8
8
8
DNL
±0.25
±0.5
±1.0
±0.25
±0.5
±1.0
±0.25
±0.5
±1.0
±0.25
±0.5
±1.0
±0.25
±0.5
±1.0
±0.25
±0.5
±1.0
±0.25
±0.5
±1.0
±0.25
±0.5
±1.0
±0.25
±0.5
±1.0
Rev. H | Page 20 of 24
Interface
SPI
SPI
SPI
2-Wire
2-Wire
2-Wire
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
SPI
2-Wire
2-Wire
2-Wire
2-Wire
2-Wire
2-Wire
SPI
SPI
SPI
SPI
SPI
SPI
the common ceramic types that provide a low impedance path
to ground at high frequencies, to handle transient currents due
to internal logic switching.
The power supply lines of the AD5304/AD5314/AD5324 use as
large a trace as possible to provide low impedance paths and reduce
the effects of glitches on the power supply line. Fast switching
signals such as clocks are shielded with digital ground to avoid
radiating noise to other parts of the board, and are never run
near the reference inputs. Avoid crossover of digital and analog
signals. Traces on opposite sides of the board run at right angles
to each other. This reduces the effects of feedthrough through
the board. A microstrip technique is by far the best, but is not
always possible with a double-sided board. In this technique,
the component side of the board is dedicated to a ground plane
while signal traces are placed on the solder side.
Settling Time (μs)
4
6
8
6
7
8
6
7
8
6
7
8
6
7
8
6
7
8
6
7
8
6
7
8
6
7
8
Package
SOT-23, MSOP
SOT-23, MSOP
MSOP
MSOP
MSOP
TSSOP
TSSOP
TSSOP
MSOP, LFCSP
MSOP, LFCSP
MSOP, LFCSP
MSOP
MSOP
TSSOP
TSSOP
TSSOP
TSSOP
TSSOP
TSSOP
TSSOP
TSSOP
TSSOP
SOT-23, MSOP
SOT-23, MSOP
SOT-23, MSOP
SOT-23, MSOP
MSOP
Data Sheet
Pins
6, 8
6, 8
6, 8
6, 8
6, 8
6, 8
8
8
8
16
16
16
10
10
10
10
10
10
16
16
16
16
16
16
16
16
16