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参数资料
| 型号： | ADS8382IBRHPT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 1-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC28 |
| 封装： | 6 X 6 MM, GREEN, PLASTIC, QFN-28 |
| 文件页数： | 8/35页 |
| 文件大小： | 1416K |
| 代理商： | ADS8382IBRHPT |
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www.ti.com
D
Q
LATCH
CONVST
CS
CONVST_QUAL
TIMING DIAGRAMS
BUSY
CONVST_QUAL
tquiet1
tquiet2
tquiet3
Quiet Zones
tsu2
th2
CS
No Read Zone (CS Initiated)
tsu3
th8
CS
FS
No Read Zone (FS Initiated)
CONVERSION AND SAMPLING
ADS8382
SLAS416B – JUNE 2004 – REVISED NOVEMBER 2004
Figure 41. Relationship Between CONVST_QUAL, CS, and CONVST
In the following descriptions, the signal CONVST_QUAL represents CONVST latched by a low value on CS (see
To avoid performance degradation, there are three quiet zones to be observed (tquiet1 and tquiet2 are zones before
and after the falling edge of CONVST_QUAL while tquiet3 is a time zone before the falling edge of BUSY) where
there should be no I/O activities. Interface control signals, including the serial clock should remain steady. Typical
degradation in performance if these quiet zones are not observed is depicted in the specifications section.
To avoid data loss a read operation should not start around the BUSY falling edge. This is constrained by tsu2,
tsu3, th2, and th8.
Figure 42. Quiet Zones and No-Read Zones
1. Convert start command:
The device enters the conversion phase from the sampling phase when a falling edge is detected on
CONVST_QUAL. This is shown in Figure 43, Figure 44, and Figure 45.
2. Sample (acquisition) start command:
The device starts sampling from the wait/nap state or at the end of a conversion if CONVST is detected as
high and CS as low. This is shown in Figure 43, Figure 44, and Figure 45.
Maintaining this condition (holding CS low) when the device has just finished a conversion (as shown in
Figure 43) takes the device immediately into the sampling phase after the conversion phase (back-to-back
conversion) and hence achieves the maximum throughput. Otherwise, the device enters the wait state or the
nap state.
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| ADS8382IBRHPTG4 | 功能描述:模数转换器 - ADC 18-Bit 600KSPS 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 |
| ADS8382IRHPR | 功能描述:模数转换器 - ADC 18-Bit 600KSPS 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 |
| ADS8382IRHPRG4 | 功能描述:模数转换器 - ADC 18-Bit 600KSPS 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 |
| ADS8382IRHPT | 功能描述:模数转换器 - ADC 18-Bit 600KSPS 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 |
| ADS8382IRHPTG4 | 功能描述:模数转换器 - ADC 18-Bit 600KSPS 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 |
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