參數(shù)資料
型號： DC1813A-F
廠商： Linear Technology
文件頁數(shù)： 14/28頁
文件大?。?/td> 0K
描述： BOARD SAR ADC LTC2368-18
軟件下載： QuikEval II System
設(shè)計資源： DC1813A Design File
DC1813A Schematic
標(biāo)準(zhǔn)包裝： 1
系列： QuikEval-II™
ADC 的數(shù)量： 1
位數(shù)： 18
采樣率（每秒）： 1M
數(shù)據(jù)接口： 串行，SPI?
輸入范圍： 0 ~ VREF
在以下條件下的電源（標(biāo)準(zhǔn)）： 13.5mW @ 1MSPS
工作溫度： 0°C ~ 70°C
已用 IC / 零件： LTC2368-18
已供物品： 板
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LTC2368HMS-18#PBF-ND - IC ADC 18BIT 1M 1CH 16MSOP
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更多...
LT6202/LT6203/LT6204
21
620234fd
TYPICAL APPLICATIONS
Single-Supply 16-Bit ADC Driver
Figure 5 shows the LT6203 driving an LTC1864 unipolar
16-bit A/D converter. The bottom half of the LT6203 is
in a gain-of-one configuration and buffers the 0V nega-
tive full-scale signal VLOW into the negative input of the
LTC1864. The top half of the LT6203 is in a gain-of-ten
configuration referenced to the buffered voltage VLOW and
drives the positive input of the LTC1864. The input range
of the LTC1864 is 0V to 5V, but for best results the input
range of VIN should be from VLOW (about 0.4V) to about
0.82V. Figure 6 shows an FFT obtained with a 10.1318kHz
coherent input waveform, from 8192 samples with no
windowing or averaging. Spurious free dynamic range is
seen to be about 100dB.
Although the LTC1864 has a sample rate far below the
gain bandwidth of the LT6203, using this amplifier is not
necessarilyacaseofoverkill.Thedesignerisremindedthat
A/D converters have sample apertures that are vanishingly
small (ideally, infinitesimally small) and make demands on
the upstream circuitry far in excess of what is implied by
theinnocent-lookingsamplerate.Inaddition,whenanA/D
converter takes a sample, it applies a small capacitor to
its inputs with a fair amount of glitch energy and expects
the voltage on the capacitor to settle to the true value very
quickly. Finally, the LTC1864 has a 20MHz analog input
bandwidthandcanbeusedinundersamplingapplications,
again requiring a source bandwidth higher than Nyquist.
–
+
–
+
–
+
LTC1864
16-BIT
250ksps
5V
SERIAL
DATA
OUT
C1
470pF
R3
100
R4
100
R1
1k
R2
110
VIN = 0.6VDC
±200mVAC
VLOW = 0.4VDC
1/2 LT6203
LT6202/03/04 F05
Figure 5. Single-Supply 16-Bit ADC Driver
FREQUENCY (kHz)
0
SFDR
(dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
–140
–150
37.5
62.5
100
LT6202/03/04 F06
12.5 25
50
75 82.5
112.5 125
fS = 250ksps
fIN = 10.131836kHz
Figure 6. FFT Showing 100dB SFDR
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DC1813A-G 功能描述:BOARD SAR ADC LTC2367-18 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:QuikEval-II™ 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
DC1813A-H 功能描述:BOARD SAR ADC LTC2364-18 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:QuikEval-II™ 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
DC1814A-A 制造商:Linear Technology 功能描述:BOARD EVAL FOR LTC4274A-1 制造商:Linear Technology 功能描述:LTC4274A LTPOE++ PSE CTRL EVAL BOARD 制造商:Linear Technology 功能描述:DEMO BOARD, LTC4274A-1 POWER OVER ETHERNET (POE), Silicon Manufacturer:Linear Technology, Silicon Core Number:LTC4274A-1, Kit Application Type:Power Management, Application Sub Type:Power Over Ethernet (POE)
DC1814A-B 制造商:Linear Technology 功能描述:BOARD EVAL FOR LTC4274A-2 制造商:Linear Technology 功能描述:LTC4274A LTPOE++ PSE CTRL EVAL BOARD 制造商:Linear Technology 功能描述:LTC4274A, LTPOE++ PSE CTRL, EVAL BOARD 制造商:Linear Technology 功能描述:DEMO BOARD, LTC4274A-2 POWER OVER ETHERNET (POE), Silicon Manufacturer:Linear Te 制造商:Linear Technology 功能描述:DEMO BOARD, LTC4274A-2 POWER OVER ETHERNET (POE), Silicon Manufacturer:Linear Technology, Silicon Core Number:LTC4274A-2, Kit Application Type:Power Management, Application Sub Type:Power Over Ethernet (POE)
DC1814A-C 制造商:Linear Technology 功能描述:BOARD EVAL FOR LTC4274A-3 制造商:Linear Technology 功能描述:LTC4274A LTPOE++ PSE CTRL EVAL BOARD 制造商:Linear Technology 功能描述:DEMO BOARD, LTC4274A-3 POWER OVER ETHERNET (POE), Silicon Manufacturer:Linear Te 制造商:Linear Technology 功能描述:DEMO BOARD, LTC4274A-3 POWER OVER ETHERNET (POE), Silicon Manufacturer:Linear Technology, Silicon Core Number:LTC4274A-3, Kit Application Type:Power Management, Application Sub Type:Power Over Ethernet (POE)
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