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参数资料
| 型号： | SPT7863SCS |
| 厂商： | SIGNAL PROCESSING TECHNOLOGIES |
| 元件分类： | ADC |
| 英文描述： | 10-BIT, 40 MSPS, 160 mW A/D CONVERTER |
| 中文描述： | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封装： | SOIC-28 |
| 文件页数： | 6/11页 |
| 文件大小： | 91K |
| 代理商： | SPT7863SCS |
6
8/21/01
SPT7863
TYPICAL INTERFACE CIRCUIT
Very few external components are required to achieve the
stated device performance. Figure 2 shows the typical in-
terface requirements when using the SPT7863 in normal
circuit operation. The following sections provide descrip-
tions of the major functions and outline critical perfor-
mance criteria to consider for achieving the optimal device
performance.
POWER SUPPLIES AND GROUNDING
Fairchild suggests that both the digital and the analog sup-
ply voltages on the SPT7863 be derived from a single ana-
log supply as shown in figure 2. A separate digital supply
should be used for all interface circuitry. Fairchild suggests
using this power supply configuration to prevent a possible
latch-up condition on powerup.
OPERATING DESCRIPTION
The general architecture for the CMOS ADC is shown in
the block diagram. The design contains 16 identical suc-
cessive approximation ADC sections, all operating in par-
allel, a 16-phase clock generator, an 11-bit 16:1 digital
output multiplexer, correction logic, and a voltage refer-
ence generator that provides common reference levels for
each ADC section.
The high sample rate is achieved by using multiple SAR
ADC sections in parallel, each of which samples the input
signal in sequence. Each ADC uses 16 clock cycles to
complete a conversion. The clock cycles are allocated as
shown in table II.
Figure 2
–
Typical Interface Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SPT7863SCSX | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| SPT7863SCT | 功能描述:视频模拟/数字化转换器集成电路 10BIT 40MSPS SaR aDC RoHS:否 制造商:Texas Instruments 输入信号类型:Differential 转换器数量:1 ADC 输入端数量:4 转换速率:3 Gbps 分辨率:8 bit 结构: 输入电压:3.3 V 接口类型:SPI 信噪比: 电压参考: 电源电压-最大:3.45 V 电源电压-最小:3.15 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TCSP-48 封装:Reel |
| SPT7863SCT_Q | 功能描述:模数转换器 - ADC 10BIT 40MSPS SaR aDC 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 |
| SPT7863SCTX | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| SPT7864 | 制造商:CADEKA 制造商全称:CADEKA 功能描述:10-BIT, 40 MSPS A/D CONVERTER |
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