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參數(shù)資料
| 型號： | LTC1400I |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Complete SO-8, 12-Bit, 400ksps ADC with Shutdown |
| 中文描述： | 完整的SO - 8，12位，以其400 kSPS ADC的帶有關(guān)斷 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 515K |
| 代理商： | LTC1400I |
12
LTC1400
APPLICATIO
S I
N
FOR
ATIO
U
Input signal leads to A
IN
and signal return leads from GND
(Pin 4) should be kept as short as possible to minimize
noise coupling. In applications where this is not possible,
a shielded cable between source and ADC is recom-
mended. Also, since any potential difference in grounds
between the signal source and ADC appears as an error
voltage in series with the input signal, attention should be
paid to reducing the ground circuit impedance as much as
possible.
W
U
nated at the LTC1400 GND pin. The ground return from the
LTC1400 Pin 4 to the power supply should be low imped-
ance for noise free operation. Digital circuitry grounds
must be connected to the digital supply common.
In applications where the ADC data outputs and control
signals are connected to a continuously active micropro-
cessor bus, it is possible to get errors in the conversion
results. These errors are due to feedthrough from the
microprocessor to the successive approximation com-
parator. The problem can be eliminated by forcing the
microprocessor into a Wait state during conversion or by
using three-state buffers to isolate the ADC data bus.
Power-Down Mode
Upon power-up, the LTC1400 is initialized to the active
state and is ready for conversion. However, the chip can be
easily placed into the Nap or Sleep mode by exercising the
right combination of CLK and CONV signal. In the Nap
mode all power is off except the internal reference, which
is still active and provides 2.42V output voltage to the
other circuitry. In this mode, the ADC draws only 6mW of
power instead of 75mW (for minimum power, the logic
inputs must be within 500mV of the supply rails). The
wake-up time from the Nap mode to the active mode is
Figure 11 shows the recommended system ground con-
nections. All analog circuitry grounds should be termi-
Figure 11. Power Supply Connection
ANALOG SUPPLY
–5V
GND
5V
+
+
LTC1400
V
SS
V
CC
GND
DIGITAL SUPPLY
GND
5V
+
DIGITAL CIRCUITRY
V
CC
GND
LTC1400 F11
CLK
CONV
NAP
SLEEP
V
REF
t
1
t
1
REFRDY
NOTE: NAP AND SLEEP ARE INTERNAL SIGNALS. REFRDY APPEARS AS A BIT IN THE D
OUT
WORD.
Figure 12. Nap Mode and Sleep Mode Waveforms
LTC1400 F08
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1400 | Complete SO-8, 12-Bit,400ksps ADC with Shutdown(SO-8封裝，12位,400ksps，模數(shù)轉(zhuǎn)換器（帶關(guān)斷）) |
| LTC1401C | Complete SO-8, 12-Bit, 200ksps ADC with Shutdown |
| LTC1401CS8 | Complete SO-8, 12-Bit, 200ksps ADC with Shutdown |
| LTC1401I | Complete SO-8, 12-Bit, 200ksps ADC with Shutdown |
| LTC1401IS8 | Complete SO-8, 12-Bit, 200ksps ADC with Shutdown |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1400IS8 | 功能描述:IC A/D CONV 12BIT W/SHTDN 8-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| LTC1400IS8#PBF | 功能描述:IC A/D CONV 12BIT W/SHTDN 8-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC1400IS8#TR | 功能描述:IC ADC 12BIT 400KSPS SHTDN 8SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC1400IS8#TRPBF | 功能描述:IC A/D CONV 12BIT W/SHTDN 8-SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC1400IS8PBF | 制造商:Linear Technology 功能描述:ADC SAR 400ksps 12-Bit Serial SOIC8 |
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