- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄296330 > LTC2205IUK-14#TRPBF (LINEAR TECHNOLOGY CORP) 16-Bit, 65Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C PDF資料下載
參數(shù)資料
| 型號： | LTC2205IUK-14#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 16-Bit, 65Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C |
| 中文描述： | 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQCC48 |
| 封裝： | 7 X 7 MM, LEAD FREE, PLASTIC, MO-220WKKD-2, QFN-48 |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 1572K |
| 代理商： | LTC2205IUK-14#TRPBF |
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
LTC2205-14
22
220514fa
Internal Dither
The LTC2205-14 is a 14-bit ADC with a very linear transfer
function; however, at low input levels even slight imperfec-
tions in the transfer function will result in unwanted tones.
Small errors in the transfer function are usually a result
of ADC element mismatches. An optional internal dither
mode can be enabled to randomize the input location on
the ADC transfer curve, resulting in improved SFDR for
low signal levels.
As shown in Figure 14, the output of the sample-and-hold
amplier is summed with the output of a dither DAC. The
dither DAC is driven by a long sequence pseudo-random
number generator; the random number fed to the dither
DAC is also subtracted from the ADC result. If the dither
DAC is precisely calibrated to the ADC, very little of the
dither signal will be seen at the output. The dither signal
that does leak through will appear as white noise. The dither
DAC is calibrated to result in less than 0.5dB elevation
in the noise oor of the ADC, as compared to the noise
oor with dither off.
APPLICATIONS INFORMATION
Figure 13. Descrambling a Scrambled Digital Output
Figure 14. Functional Equivalent Block Diagram of Internal Dither Circuit
+–
AIN–
AIN+
S/H
AMP
DIGITAL
SUMMATION
OUTPUT
DRIVERS
MULTIBIT DEEP
PSEUDO-RANDOM
NUMBER
GENERATOR
14-BIT
PIPELINED
ADC CORE
PRECISION
DAC
CLOCK/DUTY
CYCLE
CONTROL
CLKOUT
OF
D13
D0
ENC
DITHER ENABLE
HIGH = DITHER ON
LOW = DITHER OFF
DITH
ENC
ANALOG
INPUT
220514 F14
LTC2205-14
D1
D0
D2
D12
D13
LTC2205-14
PC BOARD
FPGA
CLKOUT
OF
D13/D0
D12/D0
D2/D0
D1/D0
D0
22054 F13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC2206CUK-14#PBF | 16-Bit, 80Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C |
| LTC2206CUK-14#TRPBF | 16-Bit, 80Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C |
| LTC2206IUK-14#PBF | 16-Bit, 80Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C |
| LTC2206IUK-14#TRPBF | 16-Bit, 80Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: -40°C to +85°C |
| LTC2207CUK-14#PBF | 16-Bit, 105Msps ADC; Package: QFN; No of Pins: 48; Temperature Range: 0°C to +70°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC2205IUK-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps |
| LTC2205IUK-TR | 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps |
| LTC2205IUK-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps |
| LTC2205UK | 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 65Msps/40Msps |
| LTC2205UK-14 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:14-Bit, 65Msps ADC |
發(fā)布緊急采購，3分鐘左右您將得到回復。