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參數(shù)資料
| 型號： | ADS5500 |
| 英文描述： | 14-Bit, 80MSPS Analog-to-Digital Converter |
| 中文描述： | 14位，80Msps模擬到數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 24/30頁 |
| 文件大?。?/td> | 401K |
| 代理商： | ADS5500 |
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SBAS308A MAY 2004 REVISED MARCH 2005
www.ti.com
24
REFERENCE CIRCUIT
The ADS5542 has built-in internal reference
generation, requiring no external circuitry on the printed
circuit board (PCB). For optimum performance, it is best
to connect both REFP and REFM to ground with a 1
μ
F
decoupling capacitor in series with a 1
resistor, as
shown in Figure 41. In addition, an external 56.2k
resistor should be connected from IREF (pin 31) to
AGND to set the proper current for the operation of the
ADC, as shown in Figure 41. No capacitor should be
connected between pin 31 and ground; only the 56.2k
resistor should be used.
29
30
31
REFP
REFM
IREF
56k
1
μ
F
1
μ
F
1
1
Figure 41. REFP, REFM, and IREF Connections
for Optimum Performance
CLOCK INPUT
The ADS5542 clock input can be driven with either a
differential clock signal or a single-ended clock input,
with little or no difference in performance between both
configurations. The common-mode voltage of the clock
inputs is set internally to CM (pin 17) using internal 5k
resistors that connect CLKP (pin 10) and CLKM (pin 11)
to CM (pin 17), as shown in Figure 42.
5k
5k
CLKM
CLKP
CM
CM
6pF
3pF
3pF
Figure 42. Clock Inputs
When driven with a single-ended CMOS clock input, it
is best to connect CLKM (pin 11) to ground with a
0.01
μ
F capacitor, while CLKP is AC-coupled with a
0.01
μ
F capacitor to the clock source, as shown in
Figure 43.
0.01
μ
F
0.01
μ
F
CLKP
ADS5542
CLKM
Square Wave
or Sine Wave
(3V
PP
)
Figure 43. AC-Coupled, Single-Ended Clock Input
The ADS5542 clock input can also be driven
differentially, reducing susceptibility to common-mode
noise. In this case, it is best to connect both clock inputs
to the differential input clock signal with 0.01
μ
F
capacitors, as shown in Figure 44.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADS5521 | 14-Bit, 80MSPS Analog-to-Digital Converter |
| ADS5522 | 14-Bit, 80MSPS Analog-to-Digital Converter |
| ADS5541 | MOSFET, N SC-75AMOSFET, N SC-75A; Transistor type:MOSFET; Transistor polarity:N; Voltage, Vds max:20V; Case style:SC-75A; Current, Id cont:0.14A; Current, Idm pulse:0.5A; Power, Pd:0.25W; Resistance, Rds on:10R; SMD:1; Depth, |
| ADS5542 | 14-Bit, 80MSPS Analog-to-Digital Converter |
| ADS5520 | 14-Bit, 80MSPS Analog-to-Digital Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS5500-EP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:14-BIT 125-MSPS Analog-to-digital Converter |
| ADS5500EVM | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 ADS5500 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)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 |
| ADS5500IPAP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 125MSPS ADC 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 |
| ADS5500IPAP | 制造商:Texas Instruments 功能描述:IC 14BIT ADC 125MSPS HTQFP64 制造商:Texas Instruments 功能描述:IC, 14BIT ADC, 125MSPS, HTQFP64 |
| ADS5500IPAPG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 14-Bit 125MSPS ADC 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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