參數(shù)資料
型號(hào)： ADS1601IPFBR
元件分類(lèi)： ADC
英文描述： 16-BIT 1.25MSPS ANALOG TO DIGITAL CONVERTER
中文描述： 16位1.25MSPS時(shí)模數(shù)轉(zhuǎn)換器
文件頁(yè)數(shù)： 20/26頁(yè)
文件大?。?/td> 386K
代理商： ADS1601IPFBR
SBAS322 DECEMBER 2004
www.ti.com
20
FREQUENCY RESPONSE
The linear phase FIR digital filter sets the overall frequency
response. Figure 45 shows the frequency response from
dc to 10MHz for f
CLK
= 20MHz. The frequency response
of the ADS1601 filter scales directly with CLK frequency.
For example, if the CLK frequency is decreased by half (to
10MHz), the values on the X-axis in Figure 45 would need
to be scaled by half, with the span becoming dc to 5MHz.
Figure 46 shows the passband ripple from dc to 600kHz
(f
CLK
= 20MHz). Figure 47 shows a closer view of the
passband transition by plotting the response from 400kHz
to 650kHz (f
CLK
= 20MHz).
20
0
20
40
60
80
100
120
140
0
1
2
3
5
4
6
7
8
9
Frequency (MHz)
M
10
f
CLK
= 20MHz
Figure 45. Frequency Response
0.001
0.0008
0.0006
0.0004
0.0002
0
0.0002
0.0004
0.0006
0.0008
0.001
0
100
200
300
Frequency (kHz)
400
500
M
600
f
CLK
= 20MHz
Figure 46. Passband Ripple
0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
400
450
500
550
600
Frequency (kHz)
M
650
f
CLK
= 20MHz
Figure 47. Passband Transition
ANTIALIAS REQUIREMENTS
Higher frequency, out-of-band signals must be eliminated
to prevent aliasing with ADCs. Fortunately, the ADS1601
on-chip digital filter greatly simples this filtering
requirement. Figure 48 shows the ADS1601 response out
to 60MHz (f
CLK
= 20MHz). Since the stopband extends out
to 19.3MHz, the anti-alias filter in front of the ADS1601
only needs to be designed to remove higher frequency
signals thatn this, which can usually be accomplished with
a simple RC circuit on the input driver.
20
0
20
40
60
80
100
120
140
0
10
20
30
40
50
Frequency (MHz)
M
60
f
CLK
= 20MHz
Figure 48. Frequency Response Out to 120MHz
相關(guān)PDF資料
PDF描述
ADS1601IPFBT 16-BIT 1.25MSPS ANALOG TO DIGITAL CONVERTER
ADS1602 16-Bit, 2.5MSPS Analog-to-Digital Converter
ADS1602IPFBR 16-Bit, 2.5MSPS Analog-to-Digital Converter
ADS1602IPFBRG4 16-Bit, 2.5MSPS Analog-to-Digital Converter
ADS1602IPFBT 16-Bit, 2.5MSPS Analog-to-Digital Converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS1601IPFBRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 1.25MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1601IPFBT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 1.25MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1601IPFBTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 1.25MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1602EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 ADS1602EVM Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類(lèi)型:ADC 工具用于評(píng)估:ADS130E08 接口類(lèi)型:SPI 工作電源電壓:- 6 V to + 6 V
ADS1602IPFBR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 2.5MSPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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