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參數(shù)資料
| 型號(hào)： | ADS5521IPAPR |
| 英文描述： | 12-Bit, 105MSPS Analog-toDigital Converter |
| 中文描述： | 12位，105Msps模數(shù)轉(zhuǎn)換器toDigital轉(zhuǎn)換器 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大?。?/td> | 261K |
| 代理商： | ADS5521IPAPR |
SBAS309 MAY 2004
www.ti.com
17
OUTPUT INFORMATION
The ADC provides 12 data outputs (D11 to D0, with D11
being the MSB and D0 the LSB), a data-ready signal
(CLKOUT, pin 43), and an out-of-range indicator (OVR,
pin 64) that equals 1 when the output reaches the
full-scale limits.
Two different output formats (straight offset binary or
two’s complement) and two different output clock
polarities (latching output data on rising or falling edge
of the output clock) can be selected by setting DFS
(pin 40) to one of four different voltages. Table 3 details
the four modes. In addition, output enable control (OE,
pin 41, active high) is provided to tri-state the outputs.
The output circuitry of the ADS5521 has being designed
to minimize the noise produced by the transients of the
data switching, and in particular its coupling to the ADC
analog circuitry. Output D2 (pin 51) senses the load
capacitance and adjusts the drive capability of all the
output pins of the ADC to maintain the same output slew
rate described in the timing diagram of Figure 1, as long
as all outputs (including CLKOUT) have a similar load
as the one at D2 (pin 51). This circuit also reduces the
sensitivity of the output timing versus supply voltage or
temperature. External series resistors with the output
are not necessary.
SERIAL PROGRAMMING INTERFACE
The ADS5521 has internal registers for the
programming of some of the modes described in the
previous sections. The registers should be reset after
power-up by applying a 2
μ
s (minimum) high pulse on
RESET (pin 35); this also resets the entire ADC and
sets the data outputs to low. This pin has a 200k
internal pull-up resistor to AV
DD
. The programming is
done through a three-wire interface. The timing diagram
and serial register setting in the
Serial Programing
Interface
section describe the programming of this
register.
Table 2 shows the different modes and the bit values to
be written on the register to enable them.
Note that some of these modes may modify the
standard operation of the device and possibly vary the
performance with respect to the typical data shown in
this data sheet.
P
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADS5521IPAPRG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 105MSPS 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 |
| ADS5522 | 制造商:BB 制造商全稱:BB 功能描述:14-Bit, 80MSPS Analog-to-Digital Converter |
| ADS5522EVM | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 ADS5522 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| ADS5522IPAP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 80MSPS 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 |
| ADS5522IPAPG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 80MSPS 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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