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參數(shù)資料
| 型號： | AD9764* |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 14-Bit. 125 MSPS TxDAC D/A Converter |
| 中文描述： | 14位。 125 MSPS的TxDAC系列D / A轉(zhuǎn)換 |
| 文件頁數(shù)： | 17/22頁 |
| 文件大小： | 307K |
REV. B
AD9764
–17–
of the DAC can be evaluated. Nonlinearities associated with the
DAC will create spurious tones of which some may fall back into
the “empty” channel thus limiting a channel’s carrier-to-noise
ratio. Other spurious components falling outside the band of
interest may also be important, depending on the system’s spectral
mask and filtering requirements.
This particular test vector was centered around one-half the
Nyquist bandwidth (i.e., f
CLOCK
/4) with a passband of f
CLOCK
/16.
Centering the tones at a much lower region (i.e., f
CLOCK
/10)
would lead to an improvement in performance while centering
the tones at a higher region (i.e., f
CLOCK
/2.5) would result in a
degradation in performance. Figure 40a shows the SFDR vs.
amplitude at different sample rates up to the Nyquist frequency
while Figure 40b shows the SFDR vs. amplitude within the
passband of the test vector. In assessing a DAC’s multitone
performance, it is also recommended that several units be tested
under exactly the same conditions to determine any performance
variability.
A
OUT
– dBFS
S
80
50
–20
–15
0
–10
–5
70
60
10 MSPS
100 MSPS
20 MSPS
50 MSPS
40
30
75
65
55
45
35
Figure 40a. Multitone SFDR vs. A
OUT
(Up to Nyquist)
S
50
70
60
40
75
65
55
45
80
10 MSPS
20 MSPS
50 MSPS
100 MSPS
A
OUT
– dBFS
–20
–15
0
–10
–5
Figure 40b. Multitone SFDR vs. A
OUT
(Within Multitone
Passband)
AD9764 EVALUATION BOARD
General Description
The AD9764-EB is an evaluation board for the AD9764 14-bit
DAC converter. Careful attention to layout and circuit design,
combined with a prototyping area, allows the user to easily and
effectively evaluate the AD9764 in any application where high
resolution, high speed conversion is required.
This board allows the user the flexibility to operate the AD9764
in various configurations. Possible output configurations include
transformer coupled, resistor terminated, inverting/noninverting
and differential amplifier outputs. The digital inputs are designed
to be driven directly from various word generators with the
onboard option to add a resistor network for proper load termi-
nation. Provisions are also made to operate the AD9764 with
either the internal or external reference or to exercise the power-
down feature.
Refer to the application note AN-420,
Using the AD9760/AD9764/
AD9764-EB Evaluation Board
for a thorough description and
operating instructions for the AD9764 evaluation board.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9764AR | 功能描述:IC DAC 14BIT 125MSPS 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC® 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時(shí)間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD9764ARRL | 功能描述:IC DAC 14BIT 125MSPS 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC® 標(biāo)準(zhǔn)包裝:47 系列:- 設(shè)置時(shí)間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD9764ARU | 功能描述:IC DAC 14BIT 125MSPS 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:TxDAC® 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 標(biāo)準(zhǔn)包裝:750 系列:- 設(shè)置時(shí)間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應(yīng)商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD9764ARURL | 功能描述:INTEGRATED CIRCUIT 制造商:analog devices inc. 系列:* 包裝:帶卷（TR） 零件狀態(tài):最後搶購 封裝/外殼:28-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商器件封裝:28-TSSOP 標(biāo)準(zhǔn)包裝:1 |
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