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參數(shù)資料
| 型號： | LTC1416CG |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | Dual, Low Voltage, LinCMOS(TM) Differential Comparator 8-SOIC -40 to 85 |
| 中文描述： | 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | 0.209 INCH, PLASTIC, SSOP-28 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 506K |
| 代理商： | LTC1416CG |
8
LTC1416
APPLICATIO
S I
FOR
ATIO
U
DYNAMIC PERFORMANCE
The LTC1416 has excellent high speed sampling capabil-
ity. FFT (Fast Fourier Transform) test techniques are used
to test the ADC’s frequency response, distortion and noise
at the rated throughput. By applying a low distortion sine
wave and analyzing the digital output using an FFT algo-
rithm, the ADC’s spectral content can be examined for
frequencies outside the fundamental. Figure 2 shows a
typical LTC1416 FFT plot.
W
U
U
Figure 3. Effective Bits and Signal/(Noise + Distortion)
vs Input Frequency
Signal-to-Noise Ratio
The Signal-to-Noise plus Distortion Ratio [S/(N + D)] 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. The output is band limited
to frequencies from above DC and below half the sampling
frequency. Figure 2a shows a typical spectral content with
a 400kHz sampling rate and a 100kHz input. The dynamic
performance is excellent for input frequencies up to and
beyond the Nyquist limit of 200kHz, Figure 2b.
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 ENOB is the Effective Number of Bits of resolution
and S/(N + D) is expressed in dB. At the maximum
sampling rate of 400kHz the LTC1416 maintains near ideal
ENOBs up to the Nyquist input frequency of 200kHz (refer
to Figure 3).
FREQUENCY (kHz)
0
A
150
1416 F02a
50
100
200
0
–20
–40
–60
–80
–100
–120
–140
25
75
125
175
f
SAMPLE
= 400kHz
f
SFDR = 95.2dB
SINAD = 80.5dB
FREQUENCY (kHz)
0
A
150
1416 F02b
50
100
200
0
–20
–40
–60
–80
–100
–120
–140
25
75
125
175
f
SAMPLE
= 400kHz
f
SFDR = 94.8dB
SINAD = 80.2dB
INPUT FREQUENCY (Hz)
1k
E
S
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
86
80
74
68
62
10k
100k
1416 TA02
1M 2M
f
SAMPLE
= 400kHz
NYQUIST
FREQUENCY
Figure 2a. LTC1416 Nonaveraged, 4096 Point FFT,
Input Frequency = 100kHz
Figure 2b. LTC1416 Nonaveraged, 4096 Point FFT,
Input Frequency = 190kHz
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1416CG#PBF | 功能描述:IC A/D CONV 14BIT SAMPLNG 28SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據采集 - 模數(shù)轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據接口:串行，SPI? 轉換器數(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 供應商設備封裝: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 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| LTC1416CG#TR | 功能描述:IC ADC 14BIT 400KSPS SMPL 28SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據接口:串行 轉換器數(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） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC1416CG#TRPBF | 功能描述:IC A/D CONV 14BIT SAMPLNG 28SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據接口:串行 轉換器數(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） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
| LTC1416CGPBF | 制造商:Linear Technology 功能描述:ADC,LTC1416 14bit 400kSPS SSOP |
| LTC1416IG | 功能描述:IC A/D CONV 14BIT SAMPLNG 28SSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據采集 - 模數(shù)轉換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據接口:串行 轉換器數(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） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
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