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| 型號： | ADS5510IPAPR |
| 英文描述： | 11-Bit, 125-MSPS Analog-To-Digital Converter |
| 中文描述： | 11位，125 MSPS的模擬到數(shù)字轉換器 |
| 文件頁數(shù)： | 20/29頁 |
| 文件大小： | 835K |
| 代理商： | ADS5510IPAPR |
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R
IN
R
IN
C
IN
0.1
μ
F
R
T
100
0.1
μ
F
1000pF
1:1
R
S
100
OPA695
R
1
400
A
V
= 8V/V
(18dB)
R
57.5
V
IN
INP
INM
CM
5V
+5V
10
ADS5510
ADS5510
SLAS499–JANUARY 2007
Table 4. Recommended Amplifiers to Drive the Input of the ADS5510
INPUT SIGNAL FREQUENCY
DC to 20 MHz
DC to 50 MHz
DC to 100 MHz
RECOMMENDED AMPLIFIER
THS4503
OPA847
THS4509
OPA695
THS3201
THS3202
THS9001
TYPE OF AMPLIFIER
Differential In/Out Amp
Operational Amp
Differential In/Out Amp
Operational Amp
Operational Amp
Operational Amp
RF Gain Block
USE WITH TRANSFORMER
No
Yes
No
Yes
Yes
Yes
Yes
10 MHz to 120 MHz
Over 100 MHz
When using single-ended operational amplifiers (such as the THS3201, THS3202, OPA695, or OPA847) to
provide gain, a three-amplifier circuit is recommended with one amplifier driving the primary of an RF
transformer and one amplifier in each of the legs of the secondary driving the two differential inputs of the
ADS5510. These three amplifier circuits minimize even-order harmonics. For high frequency inputs, an RF gain
block amplifier can be used to drive a transformer primary; in this case, the transformer secondary connections
can drive the input of the ADS5510 directly, as shown in
Figure 25
, or with the addition of the filter circuit shown
in
Figure 26
.
Figure 26
illustrates how R
IN
and C
IN
can be placed to isolate the signal source from the switching inputs of the
ADC and to implement a low-pass RC filter to limit the input noise in the ADC. It is recommended that these
components be included in the ADS5510 circuit layout when any of the amplifier circuits discussed previously
are used. The components allow fine-tuning of the circuit performance. Any mismatch between the differential
lines of the ADS5510 input produces a degradation in performance at high input frequencies, mainly
characterized by an increase in the even-order harmonics. In this case, special care should be taken to keep as
much electrical symmetry as possible between both inputs.
Another possible configuration for lower-frequency signals is the use of differential input/output amplifiers that
can simplify the driver circuit for applications requiring dc-coupling of the input. Flexible in their configurations
(see
Figure 27
), such amplifiers can be used for single-ended-to-differential conversion signal amplification.
Figure 26. Converting a Single-Ended Input Signal to a Differential Signal Using an RF Transformer
20
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADS5510IPAPRG4 | 功能描述:模數(shù)轉換器 - ADC 11B 125 MSPS ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS-5512 | 功能描述:DC/DC轉換器 51W 12V/3A, 5V/3A DC/DC RoHS:否 制造商:Murata 產品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| ADS5517 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:11-BIT, 200 MSPS ADC |
| ADS5517EVM | 功能描述:數(shù)據轉換 IC 開發(fā)工具 ADS5517 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| ADS5517IRGZ25 | 功能描述:模數(shù)轉換器 - ADC 11B,200MSPS ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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