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參數(shù)資料
| 型號： | TLV2544EVM |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 12-BIT ADC EVALUATION MODULE(12位ADC評估板) |
| 中文描述： | 12位ADC評估板（12位ADC的評估板） |
| 文件頁數(shù)： | 32/36頁 |
| 文件大?。?/td> | 775K |
| 代理商： | TLV2544EVM |
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ADC Overview
4-2
Operation
4.1
ADC Overview
The following paragraphs describe the TLV1504, TLV1508, TLV1544,
TLV2544, TLV2548, TLC1514, TLC2554, and TLC2558 ADCs in general.
4.1.1
General Description
As discussed earlier in Chapter 1, this evaluation module (EVM) provides a
platform for evaluating the following 10-bit ADCs: TLV1504, TLV1508,
TLV1544, TLC1514, and TLC1518, and the following 12-bit ADCs: TLV2544,
TLV2548, TLC2554, and TLC2558.
These are CMOS devices where the TLV version operates from a wide range
of voltage ranging from 2.7 V to 5.5 V supply voltage while the TLC version is
fixed 5-V supply. The converter uses an n-bit (n = 10-bit or 12-bit resolution),
switched-capacitor successive approximation (SAR) ADC and a 2-bit resistor
string. The CMOS threshold detector in the successive-approximation conver-
sion system determines each bit by examining the charge on a series of binary-
weighted capacitors (see Figure 1 of SLAS139C). In the first phase of the con-
version process, the analog input is sampled by closing the SC switch and all
ST switches simultaneously. This action charges all the capacitors to the input
voltage. In the following phase of the conversion process switches are manip-
ulated allowing the threshold detector to begin identifying bits by identifying the
charge (voltage) on each capacitor relative to the reference (REF–) voltage.
This process is repeated until all n-bits are counted.
With each step of the successive-approximation process, the initial charge is
redistributed among the capacitors. The conversion process relies on charge
redistribution to count and weigh the bits from MSB to LSB.
4.1.2
Timing Diagrams
Refer to each specific data sheet for the system signal timing diagrams which
are listed below as follows:
Figures 16 through 19 of the device datasheet (SLAS139C)
for TLV1544
Figures 2 through 14 of the device datasheet (SLAS198A)
for TLV2544/2548)
Figures 2 through 14 of the device datasheet (SLAS251)
for TLV1504/1508.
Figures 2 through 14 of the device datasheet (SLAS252)
for TLC1514/1518)
Figures 2 through 14 of the device datasheet (SLAS220A)
for TLC2554/2558
The timing diagrams show the four basic I/O signal sets required for micropro-
cessor and DSP timing.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLV2544ID | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12bit 200KSPS SAR 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 |
| TLV2544IDG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 200 kSPS Serial Out 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 |
| TLV2544IDR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 200 kSPS Serial Out 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 |
| TLV2544IDRG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 200 kSPS Serial Out 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 |
| TLV2544IPW | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12bit 200KSPS SAR 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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