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參數(shù)資料
| 型號(hào)： | LTC1400IS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | Complete SO-8, 12-Bit, 400ksps ADC with Shutdown |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 515K |
| 代理商： | LTC1400IS8 |
9
LTC1400
APPLICATIO
S I
N
FOR
ATIO
U
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
W
U
in 200ns to small load current transient will allow maxi-
mum speed operation. If a slower op amp is used, more
settling time can be provided by increasing the time
between conversions. Suitable devices capable of driving
the ADC’s A
IN
input include the LT
1360 and the LT1363
op amps.
LTC1400 comes with a built-in unipolar/bipolar detection
circuit. If V
SS
potential is forced below GND, the internal
circuitry will automatically switch to bipolar mode.
The following
list is a summary of the op amps that are
suitable for driving the LTC1400, more detailed informa-
tion is available in the Linear Technology databooks and
the LinearView
TM
CD-ROM.
LT1215/LT1216:
Dual and quad 23MHz, 50V/
μ
s single
supply op amps. Single 5V to
±
15V supplies, 6.6mA
specifications, 90ns settling to 0.5LSB.
LT1223:
100MHz video current feedback amplifier.
±
5V
to
±
15V supplies, 6mA supply current. Low distortion up
to and above 400kHz. Low noise. Good for AC applica-
tions.
LT1227:
140MHz video current feedback amplifier.
±
5V
to
±
15V supplies, 10mA supply current. Lowest distor-
tion at frequencies above 400kHz. Low noise. Best for AC
applications.
LT1229/LT1230:
Dual and quad 100MHz current feedback
amplifiers.
±
2V to
±
15V supplies, 6mA supply current
each amplifier. Low noise. Good AC specs.
LT1360:
37MHz voltage feedback amplifier.
±
5V to
±
15V
supplies. 3.8mA supply current. Good AC and DC specs.
70ns settling to 0.5LSB.
LT1363:
50MHz, 450V/
μ
s op amps.
±
5V to
±
15V sup-
plies. 6.3mA supply current. Good AC and DC specs. 60ns
settling to 0.5LSB.
LT1364/LT1365:
Dual and quad 50MHz, 450V/
μ
s op amps.
±
5V to
±
15V supplies, 6.3mA supply current per ampli-
fier. 60ns settling to 0.5LSB.
Internal Reference
The LTC1400 has an on-chip, temperature compensated,
curvature corrected, bandgap reference, which is factory
Figure 5. Intermodulation Distortion Plot in Bipolar Mode
FREQUENCY (kHz)
0
40
80 100
140
180
20
60
120
160
200
A
LTC1400 F05
f
= 400kHz
fa = 99.512kHz
fb = 102.441kHz
fa fb
3fa
2fb – fa
2fa + fb
2fa – fb
2fb + fa
2fa
3fb
fa + fb
2fb
fb – fa
Figure 5 shows the IMD performance at a 100kHz input.
Peak Harmonic or Spurious Noise
The peak harmonic or spurious noise is the largest spectral
component excluding the input signal and DC. This value
is expressed in decibels relative to the RMS value of a full-
scale input signal.
Full Power and Full Linear Bandwidth
The full power bandwidth is the input frequency at which
the amplitude of the reconstructed fundamental is reduced
by 3dB for a full-scale input signal.
The full linear bandwidth is the input frequency at which
the S/(N + D) has dropped to 68dB (11 effective bits). The
LTC1400 has been designed to optimize input bandwidth,
allowing the ADC to undersample input signals with fre-
quencies above the converter’s Nyquist Frequency. The
noise floor stays very low at high frequencies; S/(N + D)
becomes dominated by distortion at frequencies far be-
yond Nyquist.
Driving the Analog Input
The analog input of the LTC1400 is easy to drive. It draws
only one small current spike while charging the sample-
and-hold capacitor at the end of a conversion. During
conversion, the analog input draws only a small leakage
current. The only requirement is that the amplifier driving
the analog input must settle after the small current spike
before the next conversion starts. Any op amp that settles
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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(gè)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(gè)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(gè)單端，單極 |
| LTC1400IS8PBF | 制造商:Linear Technology 功能描述:ADC SAR 400ksps 12-Bit Serial SOIC8 |
| LTC1401CS8 | 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:2,500 系列:- 位數(shù):16 采樣率（每秒）:15 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個(gè)單端，雙極；8 個(gè)差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
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