參數(shù)資料
型號(hào)： ADS5220IRGZR
英文描述： 12-Bit, 40MSPS Sampling, +3.3V ANALOG-TO-DIGITAL CONVERTER
中文描述： 12位，40MSPS采樣，3.3V的模擬數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 12/20頁(yè)
文件大?。?/td> 433K
代理商： ADS5220IRGZR
ADS5220
SBAS261A
12
www.ti.com
Due to the THS4503 driving a capacitive load, small series
resistors in the output ensure stable operation. Further de-
tails of this and other functions of the THS4503 may be found
in its product datasheet, located on the Texas Instruments
web site (www.ti.com). In general, differential amplifiers pro-
vide a high-performance driver solution for applications that
require DC signal coupling.
As shown in Figure 5, an AC-coupled, single-ended input
configuration is realized with TI
’
s OPA695 for wideband
applications. For narrowband applications, the OPA2822 can
be used. In Figure 5, the OPA695 is configured for a single
supply +5V and noninverting operation. The AC gain of the
amplifier is 2 and the DC bias of the amplifier is +2.5V, set
by the voltage divider from the op amp power supply. The
OPA695 is a very high bandwidth, current-feedback op amp
that combines 4200V/
μ
s slew rate and low input voltage
noise. The OPA695
’
s high slew-rate and output drive capa-
bility can support the maximum full-scale input range of the
ADS5220 up to high input frequencies.
Further details of the OPA695 can be found in the OPA695
data sheet. The common-mode voltage at the ADS5220
input is +1.25V, set by a voltage divider from +3.3V power
supply. The +3.3V power supply must be decoupled, as
shown in Figure 11.
CLOCK INPUT
The clock input of the ADS5220 is designed to operate with
a single-ended pulse clock with CMOS/TTL level and DC-
coupling. There is no external common-mode voltage re-
quirement at the clock input pin (see Figure 6).
CLK
ADS5220
Mode Select
CMOS/TTL
DV
DD
Clock Source
50
3.3V
0V
A = DCA enabled
B = DCA disabled
50
A
B
FIGURE 6. General Input Clock Interface of ADS5220.
6.8
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
1.6k
30
47pF
1k
ADS5220
OPA695
IN
IN
3.3V
+5V
+5V
57.6
50
Source
806
806
487
0.1
μ
F
487
47pF
0.1
μ
F
1.6k
1k
1.25V
3.3V
FIGURE 5. Single-Ended Input of ADS5220 Driven by OPA695 with Gain = 2.
The clock input of the ADS5220 is referenced to the digital
supply (DV
DD
) and the applied logic levels should comply
with the specified levels (LV-logic). To obtain the specified
level of performance the clock signal applied to the ADS5220
should have as close of a 50% duty cycle as possible. This is
particularly important when the ADS5220 is operated at its
maximum sampling rate. Since this condition cannot always
easily be met, the ADS5220 features an on-chip duty-cycle
adjust (DCA) circuit that allows for additional design flexibil-
ity. The function of this duty cycle adjust circuit is controlled
through the Mode Selectpin. Its default configuration is for a
logic low (internal pull-down) which has the DCA circuit
disabled. Applying a logic high, the DCA circuit becomes
activated. Now the incoming clock duty cycle can be in the
range of 35% to 65% and the DCA circuit will adjust this to be
50% for the internal timing. There may be situations where
相關(guān)PDF資料
PDF描述
ADS5220PFBR 12-Bit, 40MSPS Sampling, +3.3V ANALOG-TO-DIGITAL CONVERTER
ADS5220PFBT 12-Bit, 40MSPS Sampling, +3.3V ANALOG-TO-DIGITAL CONVERTER
ADS5220RGZ 12-Bit, 40MSPS Sampling, +3.3V ANALOG-TO-DIGITAL CONVERTER
ADS5240 4-Channel, 12-Bit, 40MSPS ADC with Serial LVDS Interface
ADS5240IPAP 4-Channel, 12-Bit, 40MSPS ADC with Serial LVDS Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS5220PFBR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-bit 40MSPS +3.3V 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
ADS5220PFBRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-bit 40MSPS +3.3V 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
ADS5220PFBT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-bit 40MSPS +3.3V 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
ADS5220PFBTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-bit 40MSPS +3.3V 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
ADS5220RGZ 制造商:BB 制造商全稱:BB 功能描述:12-Bit, 40MSPS Sampling, +3.3V ANALOG-TO-DIGITAL CONVERTER
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*