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參數(shù)資料
| 型號： | TLV1578CDA |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO32 |
| 封裝： | GREEN, PLASTIC, TSSOP-32 |
| 文件頁數(shù)： | 7/33頁 |
| 文件大?。?/td> | 627K |
| 代理商： | TLV1578CDA |
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TLV1571, TLV1578
2.7 V TO 5.5 V, 1-/8-CHANNEL, 10-BIT,
PARALLEL ANALOG-TO-DIGITAL CONVERTERS
SLAS170D –MARCH 1999 – REVISED JULY 2000
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
software START conversion (continued)
signal-to-noise ratio + distortion (SINAD)
Signal-to-noise ratio + distortion is the ratio of the rms value of the measured input signal to the rms sum of all
other spectral components below the Nyquist frequency, including harmonics but excluding dc. The value for
SINAD is expressed in decibels.
effective number of bits (ENOB)
For a sine wave, SINAD can be expressed in terms of the number of bits. Using the following formula,
N = (SINAD – 1.76)/6.02
it is possible to get a measure of performance expressed as N, the effective number of bits. Thus, the effective
number of bits for a device for sine wave inputs at a given input frequency can be calculated directly from its
measured SINAD.
total harmonic distortion (THD)
Total harmonic distortion is the ratio of the rms sum of the first six harmonic components to the rms value of the
measured input signal and is expressed as a percentage or in decibels.
spurious free dynamic range (SFDR)
Spurious free dynamic range is the difference in dB between the rms amplitude of the input signal and the peak
spurious signal.
DSP interface
The TLV1571/ TLV1578 is a 10-bit 1-/8-analog input channel analog-to-digital converter with throughput up to
1.25 MSPS at 5 V and up to 625 KSPS at 3 V. To achieve 1.25 MSPS throughput, the ADC must be clocked
at 20 MHz. Likewise to achieve 625 KSPS throughout, the ADC must be clocked at 10 MHz. The
TLV1571/ TLV1578 can be easily interfaced to microcontrollers, ASICs, and DSPs. Figure 8 shows the pin
connections to interface the TLV1571/ TLV1578 to the TMS320C6x DSP.
Address
Decoder
EN
A0–A15
TMS320C6X
HW
HR
INTx
D0– D15
D0– D9
CS
WR
RD
EOC
TLV1571/78
REF
CH(1– 8)
REFP
REFM
The TLV1571 has only one analog input (AIN).
Figure 8. TMS320C6x DSP Interface
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| TLV1571IDWG4 | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| TLV1571IPWG4 | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| TLV1571CDWG4 | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| TLV1578CDARG4 | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO32 |
| TLV1571IDW | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TLV1578CDAG4 | 功能描述:模數(shù)轉換器 - ADC 8-Ch 10-Bit 1.25MSPS 8-Ch DSP/SPI 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 |
| TLV1578CDAR | 功能描述:模數(shù)轉換器 - ADC 8-Ch 10-Bit 1.25MSPS 8-Ch DSP/SPI 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 |
| TLV1578CDARG4 | 功能描述:模數(shù)轉換器 - ADC 8-Ch 10-Bit 1.25MSPS 8-Ch DSP/SPI 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 |
| TLV1578IDA | 功能描述:模數(shù)轉換器 - ADC 10bit 1.2 MSPS PA 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 |
| TLV1578IDAG4 | 功能描述:模數(shù)轉換器 - ADC 8-Ch 10-Bit 1.25MSPS 8-Ch DSP/SPI 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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