- 您现在的位置：买卖IC网 > PDF目录10199 > LTC1282BCSW#PBF (Linear Technology)IC A/D CONV SAMPLING W/REF24SOIC PDF资料下载
参数资料
| 型号： | LTC1282BCSW#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC A/D CONV SAMPLING W/REF24SOIC |
| 标准包装： | 32 |
| 位数： | 12 |
| 采样率（每秒）： | 140k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 24mW |
| 电压电源： | 双 ± |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC |
| 包装： | 管件 |
| 输入数目和类型： | 1 个单端，单极；1 个单端，双极 |
11
LTC1282
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
DYNAMIC PERFORMANCE
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
EFFECTIVE
NUMBER
OF
BITS
(ENOBs)
4
6
8
10
1k
100k
1M
10M
LTC1282 F03
0
10k
12
1
3
5
7
9
11
50
62
74
56
68
S/(N
+
D)
(dB)
fSAMPLE = 160kHz
VS = ±2.7V BIPOLAR
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
2
2 + V32 + V42 ... + VN2
V1
where V1 is the RMS amplitude of the fundamental fre-
quency and V2 through VN 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
AMPLITUDE
(dB
BELOW
THE
FUNDAMENTAL)
–60
–40
–20
0
1k
100k
1M
10M
LTC1282 F04
–100
10k
–90
–70
–50
–30
–10
2nd HARMONIC
THD
fSAMPLE = 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
AMPLITUDE
(dB)
20
40
60
80
LT1282 F02
0
–20
–40
–60
–80
–100
–120
10
30
50
70
fSAMPLE = 160kHz
VDD = 3V
UNIPOLAR
相关PDF资料 |
PDF描述 |
|---|---|
| LTC1282BCSW | IC A/D CONV SAMPLING W/REF24SOIC |
| MS3106R-24-11S | CONN PLUG 9POS W/SOCKET SOLDER |
| CS6422-IS | IC CODEC SPKRPHONE 2CH 20-SOIC |
| AD9231BCPZRL7-40 | IC ADC 12BIT 40MSPS 64LFCSP |
| CS6422-CS | IC CODEC SPKRPHONE 2CH 20-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1283ACN | 功能描述:IC DATA ACQ SYS 10BIT 3V 20-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| LTC1283ACN#PBF | 功能描述:IC DATA ACQ SYS 10BIT 3V 20-DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| LTC1283CN | 功能描述:IC DATA ACQ SYS 10BIT 3V 20-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| LTC1283CN#PBF | 功能描述:IC DATA ACQ SYS 10BIT 3V 20-DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| LTC1285CN8 | 功能描述:IC A/D CONV SAMPLING 12BIT 8-DIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
发布紧急采购，3分钟左右您将得到回复。