- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373391 > SHC702 (Texas Instruments, Inc.) 16-Bit 512kHz Sampling A/D Converter System(16位 512k赫茲采樣頻率的A/D轉(zhuǎn)換系統(tǒng)) PDF資料下載
參數(shù)資料
| 型號： | SHC702 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 16-Bit 512kHz Sampling A/D Converter System(16位 512k赫茲采樣頻率的A/D轉(zhuǎn)換系統(tǒng)) |
| 中文描述： | 16位512kHz采樣A / D轉(zhuǎn)換器系統(tǒng)（16位為512k赫茲采樣頻率的的A / D轉(zhuǎn)換系統(tǒng)） |
| 文件頁數(shù)： | 14/15頁 |
| 文件大?。?/td> | 164K |
| 代理商： | SHC702 |
ADC701/SHC702
14
Another key issue is the purity of both the signal and
sampling frequency generators. The sampling clock’s phase
noise (jitter) will act as another source of SNR degradation.
This is not serious as long as the jitter is random and the
noise sidebands contain no sharp peaks. The HP3325 syn-
thesizer is suitable for this purpose. The input signal genera-
tor will require more attention because its distortion will
usually be greater than that of the ADC701/SHC702. Pres-
ently, the lowest distortion synthesized generator is the
Brüel & Kjr Model 1051 (or 1049). This is suitable for
testing the system in the audio range. The upper frequency
limit of the B&K synthesizer is 200kHz. Above 20kHz, the
distortion becomes a limiting factor, and low-pass filters
must be inserted into the signal path to reduce the harmonic
and spurious content.
As noted previously, the combined noise contributions of
the signal generator and sampling clock generator far exceed
the SNR of the ADC701/SHC702 itself. The SNR has been
measured separately by applying a highly filtered sinewave
to the input, resulting in typical SNR performance of –93dB.
However, the filters employed to achieve this low-noise test
stimulus are found to cause reactive loading of the signal
source which results in increased distortion. Therefore it is
best to separate the tests for SNR from those for THD and
IMD, unless a suitably pure
and
low-noise signal can be
generated.
Figures 5 and 6 show block diagrams of FFT test setups for
the ADC701 and SHC702, summarizing the placement of
the major components discussed above. The Typical Dy-
namic Performance section shows typical results obtained
from testing the ADC701/SHC702 at a 500kHz conversion
rate, using 16K samples for the FFT analysis.
ADC701
Convert Command
(CC)
Hold Command
to SHC702
Data Strobe Output
NOTES: (1) Setup Time 28ns min, 37ns typ. (2) Hold Time 30ns min, 73ns typ. (3) High Byte refers to ADC bits 1 - 8, the most significant 8 bits.
Also, the Clip Detect signal on pin 9 is valid simultaneously with High Byte. (4) Low Byte refers to ADC bits 9 - 16, the least significant bits.
Start Conversion
N
Start Conversion
N + 1
Data Outputs for
Pin 13 = High
110ns
typ
Low Byte,
Data N
Sample Mode
CC to Hold delay 18ns typ
Hold Mode
1.45μs typ
50ns min
1.55μs typ
(1)
50ns min
Data Outputs for
Pin 13 = Low
(2)
(1)
High Byte,
(3)
Data N
Low Byte,
(4)
Data N
Low Byte,
(4)
Data N – 1
High Byte,
(3)
Data N – 1
(4)
High Byte,
(3)
Data N
FIGURE 5. FFT Test Configuration for Single-Tone Testing.
相關PDF資料 |
PDF描述 |
|---|---|
| SHC804 | High Speed Sample/Hold Amplifier(高速采樣/保持放大器) |
| SHE113YF-(B) | High Brightness LED Lamp |
| SHE113MD-(B) | High Efficiency LED Lamp |
| SHE113MD | High Efficiency LED Lamp |
| SHE113YF | High Brightness LED Lamp |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SHC702 WAF | 制造商:Texas Instruments 功能描述: |
| SHC702JM | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SHC8 | 制造商:CIT 制造商全稱:CIT Relay & Switch 功能描述:CIT SWITCH |
| SHC-80 | 功能描述:CLAMP SNAP-IT 1.250-1.438" RoHS:是 類別:線纜，導線 - 管理 >> 線夾和夾具 系列:SHC 標準包裝:100 系列:TC 類型:C-夾 開口尺寸:0.79" L x 0.54" W x 0.67" H（20.1mm x 13.7mm x 17.0mm） 安裝類型:釘子 材質(zhì):聚丙烯 顏色:黑 |
| SHC804 | 制造商:BB 制造商全稱:BB 功能描述:High Speed SAMPLE/HOLD AMPLIFIER |
發(fā)布緊急采購，3分鐘左右您將得到回復。