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參數(shù)資料
| 型號： | AD9750 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 10-Bit D/A Converter(100MSPS,10位D/A轉(zhuǎn)換器) |
| 中文描述： | 10位D / A轉(zhuǎn)換器（100MSPS時(shí)，10位的D / A轉(zhuǎn)換器） |
| 文件頁數(shù)： | 16/21頁 |
| 文件大?。?/td> | 280K |
| 代理商： | AD9750 |
AD9750
–16–
REV. 0
DATA
TECHNICAL
REFIO
FS ADJ
IOUTA
IOUTB
CLOCK
R
SET
2k
V
*
R
CAL1
50
V
CLOCK
U1
I-CHANNEL
50
V
**
R
LOAD
50
V
**
R
LOAD
TO
NYQUIST
FILTER
AND MIXER
REFIO
FS ADJ
IOUTA
IOUTB
CLOCK
U2
R
SET
2k
V
*
R
CAL2
100
V
Q-CHANNEL
50
V
**
R
LOAD
50
V
**
R
LOAD
TO
NYQUIST
FILTER
AND MIXER
0.1
m
F
REFLO
REFLO
AVDD
* OHMTEK ORNA1001F
** OHMTEK TOMC1603-50F
Figure 38. Baseband QAM Implementation Using Two
AD9750s
It is also possible to generate a QAM signal completely in the
digital domain via a DSP or ASIC, in which case only a single
DAC of sufficient resolution and performance is required to
reconstruct the QAM signal. Also available from several vendors
are Digital ASICs which implement other digital modulation
schemes such as PSK and FSK. This digital implementation has
the benefit of generating perfectly matched I and Q components
in terms of gain and phase, which is essential in maintaining
optimum performance in a communication system. In this imple-
mentation, the reconstruction DAC must be operating at a
sufficiently high clock rate to accommodate the highest specified
QAM carrier frequency. Figure 39 shows a block diagram of
such an implementation using the AD9750.
50
V
AD9750
LPF
50
V
TO
MIXER
STEL-1130
QAM
12
COS
12
SIN
12
12
I DATA
Q DATA
12
CARRIER
FREQUENCY
12
STEL-1177
NCO
CLOCK
Figure 39. Digital QAM Architecture
AD9750 EVALUATION BOARD
General Description
The AD9750-EB is an evaluation board for the AD9750 10-bit
D/A converter. Careful attention to layout and circuit design
combined with a prototyping area allow the user to easily and
effectively evaluate the AD9750 in any application where high
resolution, high speed conversion is required.
This board allows the user the flexibility to operate the AD9750
in various configurations. Possible output configurations in-
clude transformer coupled, resistor terminated, inverting/non-
inverting and differential amplifier outputs. The digital inputs are
designed to be driven directly from various word generators,
with the on-board option to add a resistor network for proper
load termination. Provisions are also made to operate the
AD9750 with either the internal or external reference, or to
exercise the power-down feature.
Refer to the application note AN-420 for a thorough descrip-
tion and operating instructions for the AD9750 evaluation
board.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD9752* | 12-Bit. 125 MSPS High Performance TxDAC D/A Converter |
| AD9752-EB | 12-Bit, 125 MSPS High Performance TxDAC D/A Converter |
| AD9752AR | 12-Bit, 125 MSPS High Performance TxDAC D/A Converter |
| AD9752ARU | 12-Bit, 125 MSPS High Performance TxDAC D/A Converter |
| AD9754ARU | 14-Bit, 125 MSPS High Performance TxDAC D/A Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9750AR | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W 制造商:Analog Devices 功能描述:DAC SGL 10-BIT 28SOIC - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:10 BIT 12500 MSPS+ TXDAC D/A CONVERTER - Bulk 制造商:Analog Devices 功能描述:0BIT DAC POLY FUSE 9750 SOIC28 |
| AD9750ARRL | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:10 BIT 125 MSPS+ TXDAC D/A CONVERTER - Bulk |
| AD9750ARU | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin TSSOP 制造商:Rochester Electronics LLC 功能描述:10 BIT 125 MSPS+ TXDAC D/A CONVERTER - Bulk |
| AD9750ARURL7 | 制造商:Analog Devices 功能描述:DAC 1-CH Segment 10-bit 28-Pin TSSOP T/R 制造商:Rochester Electronics LLC 功能描述:10 BIT 125 MSPS+ TXDAC D/A CONVERTER - Bulk |
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