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參數(shù)資料
| 型號： | LTC1197LIS8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 10-Bit, 500ksps ADCs in MSOP with Auto Shutdown |
| 中文描述： | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 20/28頁 |
| 文件大?。?/td> | 446K |
| 代理商： | LTC1197LIS8 |
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20
LTC1197/LTC1197L
LTC1199/LTC1199L
U
S
A
Signal-to-Noise Ratio
T
he signal-to-noise ratio (SNR) is the ratio between the
RMS amplitude of the fundamental input frequency to
the RMS amplitude of all other frequency components at
the A/D output. This includes distortion as well as noise
products and for this reason it is sometimes referred to
as signal-to-noise + distortion [S/(N + D)]. The output is
band limited to frequencies from DC to one half the
sampling frequency. Figure 9 shows spectral content
from DC to 250kHz which is 1/2 the 500kHz sampling
rate.
O
PPLICATI
U
U
Effective Number of Bits
The effective number of bits (ENOBs) is a measurement of
the resolution of an ADC and is directly related to the
S/(N + D) by the equation:
ENOB = [S/(N + D) –1.76]/6.02
where S/(N + D) is expressed in dB. At the maximum
sampling rate of 500kHz the LTC1197 maintains 9.5
ENOBs or better to 200kHz. Above 200kHz the ENOBs
gradually decline, as shown in Figure 10, due to increasing
second harmonic distortion. The noise floor remains
approximately 100dB.
FREQUENCY (kHz)
0
A
–40
–20
–30
–10
0
1197/99 G06
–60
–80
–50
–70
–90
–100
50
100
150
200
250
f
SMPL
= 500kHz
f
IN
Figure 9. This Clean FFT of a 97kHz Input Shows Remarkable
Performance for an ADC Sampling at the 500kHz Rate
FREQUENCY (kHz)
1
4
E
5
6
7
8
10
100
1000
1197/99 G07
3
2
1
0
9
10
V
= 2.7V
f
SMPL
= 250kHz
V
= 5V
f
SMPL
= 500kHz
Figure 10. Dynamic Accuracy is Maintained
Up to an Input Frequency of 200kHz for the
LTC1197 and 50kHz for the LTC1197L
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PDF描述 |
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| LTC1199LIS8 | 10-Bit, 500ksps ADCs in MSOP with Auto Shutdown |
| LTC1197 | 10-Bit, 500ksps ADCs in MSOP with Auto Shutdown |
| LTC1197C | 10-Bit, 500ksps ADCs in MSOP with Auto Shutdown |
| LTC1197CS8 | 10-Bit, 500ksps ADCs in MSOP with Auto Shutdown |
| LTC1197I | 10-Bit, 500ksps ADCs in MSOP with Auto Shutdown |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1197LIS8#PBF | 功能描述:IC ADC 10BIT 250KHZ W/SD 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: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 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| LTC1197LIS8#TR | 功能描述:IC ADC 10BIT 250KHZ W/SD 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 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| LTC1197LIS8#TRPBF | 功能描述:IC ADC 10BIT 250KHZ W/SD 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: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 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| LTC1198 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:8-Bit, SO-8, 1MSPS ADCs with Auto-Shutdown Options |
| LTC1198-1AC | 制造商:LINER 制造商全稱:Linear Technology 功能描述:8-Bit, SO-8, 1MSPS ADCs with Auto-Shutdown Options |
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