AD8019AR-EVAL Analog Devices Inc, AD8019AR-EVAL Datasheet - Page 14

• Manufacturer Part Number: AD8019AR-EVAL
• Description: BOARD EVAL FOR AD8019 SOIC
• Manufacturer: Analog Devices Inc
• Type: Drivers, Receivers, Transceiversr

Specifications of AD8019AR-EVAL

• Rohs Status: RoHS non-compliant
• Contents: Evaluation Board
• For Use With/related Products: AD8019 SOP

TxDAC is a registered trademark of Analog Devices, Inc.
AD8019
Generating DMT Signals
At this time, DMT-modulated waveforms are not typically
menu-selectable items contained within arbitrary waveform
generators. Even using (AWG) software to generate DMT sig-
nals, AWGs that are available today may not deliver DMT
signals sufficient in performance with regard to MTPR due to
limitations in the D/A converters and output drivers used by
AWG manufacturers. Similar to evaluating single-tone distor-
tion performance of an amplifier, MTPR evaluation requires a
DMT signal generator capable of delivering MTPR performance
better than that of the driver under evaluation. Generating
DMT signals can be accomplished using a Tektronics AWG
2021 equipped with Option 4, (12-/24-bit, TTL Digital Data
Out), digitally coupled to Analog Devices’ AD9754, a 14-bit
TxDAC
differential driver. Note that the DMT waveforms, available on
the Analog Devices website, www.analog.com, or similar. WFM
files are needed to produce the necessary digital data required to
drive the TxDAC from the optional TTL Digital Data output of
the TEK AWG2021.
®
, buffered by an AD8002 amplifier configured as a
V
V
IN
IN
0.1 F
0.1 F
0.1 F
0.1 F
10k
10k
10k
10k
0.1 F
6V
100
100
0.1 F
0.1 F
100
100
–12V
50
50
50
50
301
301
301
301
+12V
+12V
0.1 F
0.1 F
0.1 F
16dBm
16dBm
P
P
OUT
OUT
12.4
12.4
17.3
17.3
R1
10 F
R1
R2
R2
10 F
10 F
TRANSFORMER
TRANSFORMER
–2
–3
–1
1:1.7
1:1
–0.25
4
3
2
1
0
–0.20
R
R
L
L
= 100
–0.15
= 100
–0.10
POWER
POWER
13dBm
13dBm
LINE
LINE
–0.05
TIME – ms
0
0.05
0.10
0.15
0.20