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參數(shù)資料
| 型號(hào)： | THS1007CDAR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | ADC |
| 英文描述： | 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| 封裝： | GREEN, PLASTIC, TSSOP-32 |
| 文件頁(yè)數(shù)： | 7/34頁(yè) |
| 文件大小： | 364K |
| 代理商： | THS1007CDAR |
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THS1007
SLAS286B AUGUST 2000 REVISED DECEMBER 2010
www.ti.com
15
DETAILED DESCRIPTION
Reference Voltage
The THS1007 has a built-in reference, which provides the reference voltages for the ADC. VREFP is set to 3.5 V
and VREFM is set to 1.5 V. An external reference can also be used through two reference input pins, REFP
and REFM, if the reference source is programmed as external. The voltage levels applied to these pins establish
the upper and lower limits of the analog inputs to produce a full-scale and zero-scale reading respectively.
Analog Inputs
The THS1007 consists of 4 analog inputs, which are sampled simultaneously. These inputs can be selected
individually and configured as single-ended or differential inputs. The desired analog input channel can be
programmed.
Converter
The THS1007 uses a 10-bit pipelined multistaged architecture, which achieves a high sample rate with low
power consumption. The THS1007 distributes the conversion over several smaller ADC sub-blocks, refining
the conversion with progressively higher accuracy as the device passes the results from stage to stage. This
distributed conversion requires a small fraction of the number of comparators used in a traditional flash ADC.
A sample-and-hold amplifier (SHA) within each of the stages permits the first stage to operate on a new input
sample while the second through the eighth stages operate on the seven preceding samples.
Conversion Clock
An external clock signal with a duty cycle of 50% has to be applied to the clock input (CONV_CLK). A new
conversion is started with every falling edge of the applied clock signal. The conversion values are available
at the output with a latency of 5 clock cycles.
SYNC
In multichannel mode, the first SYNC signal is delayed by [7+ (# Channels Sampled)] cycles of the CONV_CLK
after a SYNC reset. This is due to the latency of the pipeline architecture of the THS1007.
Sampling Rate
The maximum possible conversion rate per channel is dependent on the selected analog input channels.
Table 1 shows the maximum conversion rate for different combinations.
Table 1. Maximum Conversion Rate in Continuous Conversion Mode
CHANNEL CONFIGURATION
NUMBER OF
CHANNELS
MAXIMUM CONVERSION
RATE PER CHANNEL
1 single-ended channel
1
6 MSPS
2 single-ended channels
2
3 MSPS
3 single-ended channels
3
2 MSPS
4 single-ended channels
4
1.5 MSPS
1 differential channel
1
6 MSPS
2 differential channels
2
3 MSPS
1 single-ended and 1 differential channel
2
3 MSPS
2 single-ended and 1 differential channels
3
2 MSPS
The maximum conversion rate per channel, fc, is given by:
fc + 6 MSPS
# channels
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| THS1007IDAR | 4-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS1007IDA | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 BIT QUAD ADC w/o 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
| THS1007IDAG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 6MSPS Simult Sampling Quad Ch 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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 |
| THS1007IDAR | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:10-BIT, 4 ANALOG INPUT, 6-MSPS, SIMULATANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTER |
| THS10082 | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:10 bit TWO ANALOG INPUT, 8 MSPS SIMULTANEOUS SAMPLING ANALOG TO DIGITAL CONVERTER |
| THS10082CDA | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10 Bit 8 MSPS Lo-Pwr 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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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