参数资料
型号: LTC1199IS8
厂商: Linear Technology
文件页数: 13/28页
文件大小: 0K
描述: IC ADC 10BIT 450KHZ W/SD 8-SOIC
标准包装: 100
位数: 10
采样率(每秒): 450k
数据接口: MICROWIRE?,串行,SPI?
转换器数目: 1
功率耗散(最大): 25mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
输入数目和类型: 1 个单端,单极
20
LTC1197/LTC1197L
LTC1199/LTC1199L
Signal-to-Noise Ratio
The 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.
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
AMPLITUDE
(dB) –40
–20
–30
–10
0
1197/99 G06
–60
–80
–50
–70
–90
–100
50
100
150
200
250
fSMPL = 500kHz
fIN = 97.045898kHz
Figure 9. This Clean FFT of a 97kHz Input Shows Remarkable
Performance for an ADC Sampling at the 500kHz Rate
FREQUENCY (kHz)
1
4
ENOBs
5
6
7
8
10
100
1000
1197/99 G07
3
2
1
0
9
10
VCC = 2.7V
fSMPL = 250kHz
VCC = 5V
fSMPL = 500kHz
Figure 10. Dynamic Accuracy is Maintained
Up to an Input Frequency of 200kHz for the
LTC1197 and 50kHz for the LTC1197L
APPLICATIO S I FOR ATIO
WU
UU
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LTC1199IS8#TR 功能描述:IC ADC 10BIT 450KHZ W/SD 8-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率(每秒):15 数据接口:MICROWIRE?,串行,SPI? 转换器数目:1 功率耗散(最大):480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN(5x7) 包装:带卷 (TR) 输入数目和类型:16 个单端,双极;8 个差分,双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
LTC1199IS8#TRPBF 功能描述:IC ADC 10BIT 450KHZ W/SD 8-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率(每秒):15 数据接口:MICROWIRE?,串行,SPI? 转换器数目:1 功率耗散(最大):480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN(5x7) 包装:带卷 (TR) 输入数目和类型:16 个单端,双极;8 个差分,双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
LTC1199L 制造商:LINER 制造商全称:Linear Technology 功能描述:10-Bit, 500ksps ADCs in MSOP with Auto Shutdown
LTC1199LC 制造商:LINER 制造商全称:Linear Technology 功能描述:10-Bit, 500ksps ADCs in MSOP with Auto Shutdown