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參數資料
| 型號： | ADS7818P |
| 英文描述： | CMOS Dual 4-Input NOR Gate 14-PDIP -55 to 125 |
| 中文描述： | 2SC5161 |
| 文件頁數： | 10/13頁 |
| 文件大?。?/td> | 151K |
| 代理商： | ADS7818P |
10
ADS7818
D11
(MSB)
DATA
HOLD
SAMPLE
SAMPLE
HOLD
CLK
CONV
SAMPLE/HOLD
MODE
POWER MODE
FULL POWER
FULL POWER
LOW POWER
D10
D1
D0
(LSB)
t
CKPD
t
CVPU
t
CVSP
1
2
3
12
13
t
ACQ
CONVERSION IN PROGRESS
IDLE
IDLE
INTERNAL
CONVERSION
STATE
NOTES: (1) The low power mode (“power-down”) is entered when CONV remains LOW during the conversion and is still LOW at the
start of the 13th clock cycle. (2) The low power mode is exited when CONV goes HIGH. (3) When in power-down, the transition from
hold mode to sample mode is initiated by CONV going HIGH.
(1)
(2)
(3)
FIGURE 4. Power-down Timing.
D11
(MSB)
DATA
CONVERSION IN PROGRESS
IDLE
LOW...
IDLE
CLK
CONV
POWER MODE
FULL POWER
LOW POWER
D10
D1
D0
(LSB)
1
2
3
12
13
14
23
24
D1
D10
D11
(MSB)
INTERNAL
CONVERSION
STATE
t
CVDD
t
CKCS
t
CKCH
t
CVPD
t
CVH
HOLD
SAMPLE
SAMPLE/HOLD
MODE
NOTES: (1) The serial data can be transmitted LSB first by pulling CONV LOW during the 13th clock cycle. (2) After the MSB has been
transmitted, the DATA output pin will remain LOW until CONV goes HIGH. (3) When CONV is taken LOW to initiate the LSB first transfer,
the converter enters the power-down mode.
(1)
(2)
(3)
FIGURE 5. Serial Data “LSB-First” Timing.
In contrast, the second method (clocking at a fixed rate)
means that each conversion takes X clock cycles. As the
time between conversions get longer, the converter remains
in power-down an increasing percentage of time. This re-
duces total power consumption by a considerable amount.
For example, a 50kHz conversion rate results in roughly
1/10 of the power (minus the reference) that is used at a
500kHz conversion rate.
相關PDF資料 |
PDF描述 |
|---|---|
| ADS7818PB | 2SC5161 |
| ADS7819PB | 12-Bit 800kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER |
| ADS7819UB | 12-Bit 800kHz Sampling CMOS ANALOG-to-DIGITAL CONVERTER |
| ADS7819 | CMOS Dual 4-Input NOR Gate 14-SOIC -55 to 125 |
| ADS7819P | CMOS Dual 4-Input NOR Gate 14-SOIC -55 to 125 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADS7818P | 制造商:BURR-BROWN 功能描述:IC 12BIT ADC 7818 DIP8 制造商:Texas Instruments 功能描述:IC 12BIT ADC 500KHZ DIP8 制造商:Texas Instruments 功能描述:IC, 12BIT ADC, 500KHZ, DIP8 制造商:Texas Instruments 功能描述:IC, 12BIT ADC, 500KHZ, DIP8; Resolution (Bits):12bit; Sampling Rate:500kSPS; Supply Voltage Type:Single; Supply Voltage Min:4.75V; Supply Voltage Max:5.25V; Supply Current:2.2mA; Digital IC Case Style:DIP; No. of Pins:8; Input ;RoHS Compliant: Yes |
| ADS7818PB | 功能描述:模數轉換器 - ADC 12-Bit High Speed Low Power Sampling RoHS:否 制造商:Texas Instruments 通道數量: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 |
| ADS7818PB | 制造商:Texas Instruments 功能描述:IC 12BIT ADC 500KHZ PDIP8 7818 |
| ADS7818PBG4 | 功能描述:模數轉換器 - ADC 12-Bit High Speed Low Power Sampling RoHS:否 制造商:Texas Instruments 通道數量: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 |
| ADS7818PG4 | 功能描述:模數轉換器 - ADC 12-Bit High Speed Low Power Sampling RoHS:否 制造商:Texas Instruments 通道數量: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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