- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373856 > AD12400 (Analog Devices, Inc.) 12-Bit 400 MSPS A/D Converter PDF資料下載
參數(shù)資料
| 型號： | AD12400 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | ADC |
| 英文描述： | 12-Bit 400 MSPS A/D Converter |
| 中文描述： | 12位400 MSPS的A / D轉(zhuǎn)換 |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 403K |
| 代理商： | AD12400 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
AD12400
THEORY OF OPERATION
The AD12400 uses two high-speed, 12-bit analog-to-digital
converters (ADCs) in a time-interleaved configuration to
double the sample rate, while maintaining a high level of
dynamic range performance. The digital output of each ADC
channel is calibrated using a proprietary digital post processing
technique, Advanced Filter Bank (AFB
TM
), from VCorp
Technologies. AFB is implemented using a state-of-the-art Field
Programmable Gate Array (FPGA) and provides a wide
bandwidth, wide temperature match for any gain, phase, and
clock timing errors between each ADC channel.
Rev. 0 | Page 15 of 28
TIME-INTERLEAVING ADCS
When two ADCs are time-interleaved, gain and/or phase
mismatches between each channel will produce an
Image Spur
at fs/2 – f
AIN
and an
Offset Spur
as shown in Figure 18. These
mismatches can be the result of any combination of device
tolerance, temperature, and frequency deviations.
.
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0
0
20
40
60
80
100
120
140
160
180
200
FREQUENCY (MHz)
d
IMAGE SPUR
1
2
3
4
5
6
N
OFFSET SPUR
X
Figure 18. Image Spur Due to Mismatches between Two Interleaved ADCs
(No AFB Digital Post Processing)
Figure 19 displays the performance of a similar converter with
on-board, AFB post processing implemented. The –44 dBFS
image spur has been reduced to –77 dBFS and as a result, the
dynamic range of this time-interleaved ADC is no longer
limited by the channel matching.
0
0
20
40
60
80
100
120
140
160
180
200
FREQUENCY (MHz)
d
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
IMAGE SPUR
OFFSET SPUR
1
2
3
4
5
6
N
X
Figure 19. AD12400 with AFB Digital Post Processing
The relationship between image spur and channel mismatches
is captured in Table 7 for specific conditions.
Table 7. Image Spur vs. Channel Mismatch
Gain Error
(%)
(ps)
1
15
0.25
2.7
0.2
1.1
0.025
0.5
Aperture Delay Error
Image Spur
(dBc)
–40
–54
–62
–70
For a more detailed description of time-interleaving in ADCs
and a design example using the AD12400, refer to “Advanced
Digital Post-Processing Techniques Enhance Performance in
Time Interleaved ADC Systems,” published in the August, 2003
edition of Analog Dialogue. This article can be found at
http://www.analog.com/analogDialogue.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD12400JWS | 12-Bit 400 MSPS A/D Converter |
| AD12400KWS | 12-Bit 400 MSPS A/D Converter |
| AD1315KZ | High Speed Active Load with Inhibit Mode |
| AD1315 | High Speed Active Load with Inhibit Mode |
| AD1317 | Ultrahigh Speed Window Comparator with Latch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD124-00 | 功能描述:SENSOR MAG SW 28G CROS AX 8-MSOP RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:AD 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點(diǎn):可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| AD12400/KIT | 制造商:AD 制造商全稱:Analog Devices 功能描述:12-Bit 400 MSPS A/D Converter |
| AD12400BWS | 制造商:Analog Devices 功能描述:ADC DUAL 400MSPS 12-BIT PARALLEL - Bulk |
| AD124-00E | 功能描述:SENSOR MAG SW 28G CROS AX 8-MSOP 制造商:nve corp/sensor products 系列:AD 包裝:管件 零件狀態(tài):有效 功能:全極開關(guān) 技術(shù):霍爾效應(yīng) 極化:任意一種 感應(yīng)范圍:±3.4mT 跳閘，±1.4mT 釋放 測試條件:-40°C ~ 125°C 電壓 - 電源:4.5 V ~ 30 V 電流 - 電源（最大值）:4.5mA 電流 - 輸出（最大值）:20mA 輸出類型:開路集電極 特性:- 工作溫度:-40°C ~ 125°C（TA） 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商器件封裝:8-MSOP 標(biāo)準(zhǔn)包裝:1,000 |
| AD12400JWS | 制造商:Analog Devices 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。