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參數(shù)資料
| 型號(hào)： | ADS5102IPFBR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE |
| 中文描述： | 1.8 - V模擬電源，10位，65/40 MSPS的模擬到數(shù)字的，具有內(nèi)部參考變換器 |
| 文件頁數(shù)： | 7/23頁 |
| 文件大小： | 334K |
| 代理商： | ADS5102IPFBR |
ADS5102
ADS5103
SLAS351B – OCTOBER 2001 – REVISED DECEMBER 2001
15
www.ti.com
TYPICAL CHARACTERISTICS
Figure 27
35
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60
65
70
75
80
30
35
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45
50
55
60
65
70
ADS5102
SFDR, SINAD
vs
CLOCK DUTY CYCLE
AVDD = DVDD = 1.8 V
DRVDD = 3.3 V
Fclk = 65 MHz
fi = 32.49 MHz at –1 dBFS
Clock Duty Cycle – %
SFDR,
SINAD
–
dBc
SINAD
SFDR
Figure 28
45
50
55
60
65
70
75
30
35
40
45
50
55
60
65
70
ADS5103
SFDR, SINAD
vs
CLOCK DUTY CYCLE
AVDD = DVDD = 1.8 V
DRVDD = 3.3 V
Fclk = 40 MHz
fi = 19.99 MHz at –1 dBFS
Clock Duty Cycle – %
SFDR,
SINAD
–
dBc
SINAD
SFDR
PRINCIPLES OF OPERATION
analog-to-digital converter
The ADS5102/3 is designed using a switched capacitor pipeline architecture fabricated in CMOS process. The
pipeline architecture is implemented with 10 stages, thus allowing for high conversion speed and exceptionally
low power. Each of these 10 stages produces one digital bit per stage. Both rising and falling edges of the clock
are used so the signal propagates thru the pipeline every half clock or five total clocks. Digital error correction
uses another 1/2 clock cycle at the end; thus the total pipeline latency is 5.5 clocks. (Refer to timing diagram
on page 7)
10-stage operation
The signal is sampled by the SHA. The first stage is digitized by 1.5 bits and sent to the digital error correction
block. This digitized value is then applied to a DAC, which recreates the analog value that has been digitized.
This value is then fed into a summing junction with the original input signal. The summing junction subtracts the
converted value from the original signal. This is known as the residue voltage. This residue voltage is then
amplified by a factor of 2x and transferred to the next stage. This is repeated for each of the 10 stages.
Each of the 10 pipeline stages, as well as the sample and hold amplifier, is differential in nature. This allows
rejection of any common mode signal. Thus a signal seen on Ain+ and Ain– is differentially seen as 0 V on the
output. This fully differential architecture allows higher ac performance of the ADC by reducing noise
susceptibility.
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| ADS5103 | "10 Bit |
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| ADS5103CPFBR | 1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE |
| ADS5103EVM | 1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE |
| ADS5103IPFB | 1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS5102IPFBRG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 65MSPS 1.8V Int/Ext Ref w/Pwrdwn 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 輸入類型:Differential 信噪比:107 dB 接口類型: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 |
| ADS5103 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.8-V ANALOG SUPPLY, 10-BIT, 65/40 MSPS ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE |
| ADS5103CPFB | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 40MSPS 1.8V Int/Ext Ref w/Pwrdwn 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 輸入類型:Differential 信噪比:107 dB 接口類型: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 |
| ADS5103CPFBG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 40MSPS 1.8V Int/Ext Ref w/Pwrdwn 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 輸入類型:Differential 信噪比:107 dB 接口類型: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 |
| ADS5103CPFBR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 40MSPS 1.8V Int/Ext Ref w/Pwrdwn 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 輸入類型:Differential 信噪比:107 dB 接口類型: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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