- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377738 > LTC1282ACSW (LINEAR TECHNOLOGY CORP) 3V 140ksps 12-Bit Sampling A/D Converter with Reference PDF資料下載
參數(shù)資料
| 型號： | LTC1282ACSW |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 3V 140ksps 12-Bit Sampling A/D Converter with Reference |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| 封裝： | 0.300 INCH, PLASTIC, SOP-24 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 439K |
| 代理商： | LTC1282ACSW |
11
LTC1282
U
S
A
DYNAMIC PERFORMANCE
O
PPLICATI
U
U
The LTC1282 has exceptionally high speed sampling capa-
bility. FFT (Fast Fourier Transform) test techniques are
used to characterize the ADC’s frequency response, distor-
tion and noise at the rated throughput. By applying a low
distortion sine wave and analyzing the digital output using
an FFT algorithm, the ADC’s spectral content can be
examined for frequencies outside the fundamental. Figure
2 shows a typical LTC1282 FFT plot.
Signal-to-(Noise + Distortion) 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 2 shows a typical LTC1282 FFT plot.
Figure 2. LTC1282 Nonaveraged, 1024 Point FFT Plot
INPUT FREQUENCY (Hz)
2
1
E
4
3
6
5
8
7
10
1k
100k
1M
10M
LTC1282 F03
0
10k
12
11
9
50
62
56
74
68
S
f
SAMPLE
= 160kHz
V
S
BIPOLAR
(±1.25V
INPUT)
Total Harmonic Distortion
Total Harmonic Distortion (THD) is the ratio of the RMS
sum of all harmonics of the input signal to the fundamental
itself. The out-of-band harmonics alias into the frequency
band between DC and half the sampling frequency. THD is
expressed as:
THD = 20log
√
V
22
+ V
32
+ V
42
... + V
N2
V
1
where V
1
is the RMS amplitude of the fundamental fre-
quency and V
2
through V
N
are the amplitudes of the
second through Nth harmonics. The typical THD specifi-
cation in the Dynamic Accuracy table includes the 2nd
through 5th harmonics. With a 70kHz input signal, the
LTC1282 has a typical –82dB THD as shown in Figure 4.
Figure 3. ENOBs and S/(N + D) vs Input Frequency
INPUT FREQUENCY (Hz)
–80
A
–60
–40
–20
0
1k
100k
1M
10M
LTC1282 F04
–100
10k
–90
–70
–50
–30
–10
2nd HARMONIC
THD
f
= 140kHz
±3V SUPPLIES
BIPOLAR
3rd HARMONIC
Figure 4. Distortion vs Input Frequency (Bipolar)
Effective Number of Bits
The Effective Number of Bits (ENOBs) is a measurement of
the resolution of an ADC and is directly related to
S/(N + D) by the equation:
N = [S/(N + D) – 1.76]/6.02
where N is the Effective Number of Bits of resolution and
S/(N + D) is expressed in dB. At the maximum sampling
rate of 140kHz the LTC1282 maintains 11.3 ENOBs at
70kHz input frequency. Refer to Figure 3.
FREQUENCY (kHz)
0
A
20
40
60
80
LT1282 F02
0
–20
–40
–60
–80
–100
–120
10
30
50
70
f
SAMPLE
= 160kHz
V
UNIPOLAR
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1282BC | 3V 140ksps 12-Bit Sampling A/D Converter with Reference |
| LTC1282BCN | 3V 140ksps 12-Bit Sampling A/D Converter with Reference |
| LTC1282BCSW | 3V 140ksps 12-Bit Sampling A/D Converter with Reference |
| LTC1282 | 3V 140ksps 12-Bit,Sampling A/D Converter with Reference(3V,140ksps,12位,采樣模數(shù)轉(zhuǎn)換器(帶基準(zhǔn))) |
| LTC1283AC | 3V Single Chip 10-Bit Data Acquisition System |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1282ACSW#PBF | 功能描述:IC A/D CONV SAMPLING W/REF24SOIC 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):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 |
| LTC1282ACSW#TR | 功能描述:IC ADC 12BIT SAMPLING REF 24SOIC 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 |
| LTC1282ACSW#TRPBF | 功能描述:IC A/D CONV SAMPLING W/REF24SOIC 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):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 |
| LTC1282BCN | 功能描述:IC A/D CONV SAMPLING W/REF 24DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| LTC1282BCN#PBF | 功能描述:IC A/D CONV SAMPLING W/REF 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):12 采樣率（每秒）:3M 數(shù)據(jù)接口:- 轉(zhuǎn)換器數(shù)目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數(shù)目和類型:- |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。