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| 型号： | THS10082CDAG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 2-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO32 |
| 封装： | GREEN, PLASTIC, TSSOP-32 |
| 文件页数： | 7/37页 |
| 文件大小： | 375K |
| 代理商： | THS10082CDAG4 |
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THS10082
SLAS254B MAY 2002 REVISED NOVEMBER 2002
www.ti.com
15
DETAILED DESCRIPTION
Reference Voltage
The THS10082 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 THS10082 consists of two 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.
Analog-to-Digital Converter
The THS10082 uses a 10-bit pipelined multistaged architecture with four 1-bit stages followed by four 2-bit stages, which
achieves a high sample rate with low power consumption. The THS10082 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.
DATA_AV
In continuous conversion mode, the first DATA_AV signal is delayed by (7+TL) cycles of the CONV_CLK after a FIFO reset.
This is due to the latency of the pipeline architecture of the THS10082.
Conversion Modes
The conversion can be performed in two different conversion modes. In the single conversion mode, the conversion is
initiated by an external signal (CONVST). An internal oscillator controls the conversion time. In the continuous conversion
mode, an external clock signal is applied to the clock input (CONV_CLK). A new conversion is started with every falling
edge of the applied clock signal.
Sampling Rate
The maximum possible conversion rate per channel is dependent on the selected analog input channels. Table 1 shows
the maximum conversion rate in the continuous conversion mode for different combinations.
Table 1. Maximum Conversion Rate in Continuous Conversion Mode
CHANNEL CONFIGURATION
NUMBER OF
CHANNELS
MAXIMUM CONVERSION
RATE PER CHANNEL
One single-ended channel
1
8 MSPS
Two single-ended channels
2
4 MSPS
One differential channel
1
8 MSPS
The maximum conversion rate in the continuous conversion mode per channel, fc, is given by:
fc
+ 8 MSPS
# channels
Table 2 shows the maximum conversion rate in the single conversion mode.
Table 2. Maximum Conversion Rate in Single Conversion Mode(1)
CHANNEL CONFIGURATION
NUMBER OF
CHANNELS
MAXIMUM CONVERSION
RATE PER CHANNEL
1 single-ended channel
1
4 MSPS
2 single-ended channels
2
2.67 MSPS
1 differential channel
1
4 MSPS
(1) The maximum conversion rate with respect to the typical internal oscillator speed [i.e., 8 MHz × (tc/t2)].
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相关代理商/技术参数 |
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| THS10082EVM | 功能描述:EVALUATION MODULE FOR THS10082 RoHS:是 类别:编程器，开发系统 >> 评估板 - 模数转换器 (ADC) 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- ADC 的数量:1 位数:12 采样率（每秒）:94.4k 数据接口:USB 输入范围:±VREF/2 在以下条件下的电源（标准）:- 工作温度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，软件 |
| THS10082IDA | 功能描述:模数转换器 - ADC 10 BIT High Speed AD RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| THS10082IDAG4 | 功能描述:模数转换器 - ADC 10 Bit 8 MSPS Lo-Pwr RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| THS1009 | 制造商:TI 制造商全称:Texas Instruments 功能描述:10-BIT, 2 ANALOG INPUT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTER |
| THS1009CDA | 制造商:TI 制造商全称:Texas Instruments 功能描述:10-BIT, 2 ANALOG INPUT, 8 MSPS, SIMULTANEOUS SAMPLING ANALOG-TO-DIGITAL CONVERTER |
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