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参数资料
| 型号： | DDC112U/1K |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 2-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28 |
| 封装： | GREEN, PLASTIC, SOIC-28 |
| 文件页数： | 14/34页 |
| 文件大小： | 776K |
| 代理商： | DDC112U/1K |
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DDC112
21
SBAS085B
www.ti.com
FIGURE 20. Daisy-Chained DDC112s.
IN1
IN2
DCLK
DXMIT
DIN
DVALID
DOUT
DDC112
“F”“E”
Sensor “F”
Sensor “E”
IN1
IN2
DCLK
DXMIT
DIN
DVALID
DOUT
DDC112
“D”“C”
Sensor “D”
Sensor “C”
IN1
IN2
DCLK
DXMIT
DIN
DVALID
DOUT
Data Retrieval
Outputs
DDC112
“B”“A”
Sensor “B”
Sensor “A”
R
P
R
P
R
P
Data Retrievel
Inputs
40 Bits
FIGURE 21. DDC112 in Parallel Operation.
SYMBOL
DESCRIPTION
MIN
TYP
MAX
UNITS
t18
Propagation Delay from Rising Edge of CLK to DVALID LOW
30
ns
t19
Propagation Delay from DXMIT LOW to DVALID HIGH
30
ns
t20
Setup Time from DCLK LOW TO DXMIT LOW
20
ns
t21
Propagation Delay from DXMIT LOW to Valid DOUT
30
ns
t22
Hold Time that DOUT is Valid After Falling Edge of DCLK
5
ns
t23
Propagation Delay from DXMIT HIGH to DOUT Disabled
30
ns
t22A(1)
Propagation Delay from Falling Edge of DCLK to Valid DOUT
25
ns
t22B(2)
Propagation Delay from Falling Edge of DCLK to Valid DOUT
30
ns
NOTES: (1) Applies to DDC112UK, YK only, with a maximum load of one DDC112UK, YK DIN (4pF typical) with an additional load of (5pF
100k). (2) Applies
to DDC112U, Y only, with a maximum load of one DDC112U,Y DIN (4pF typical) with an additional load of (5pF
100k).
FIGURE 22. Digital Interface Timing Diagram for Data Retrieval From a Single DDC112.
TABLE IX. Timing for the DDC112 Data Retrieval.
DIN
DOUT
DXMIT
DDC112
Data Output
DDC112
Enable
DOUT
DXMIT
DOUT
DXMIT
t
18
t
19
t
20
t
21
t
22
t
23
Input 2
Bit 1
Input 2
Bit 20
Input 1
Bit 1
Input 1
Bit 20
MSB
LSB
MSB
Output Disabled
Output Enabled
Output Disabled
LSB
CLK
DVALID
DXMIT
DCLK(1)
DOUT
NOTE: (1) Disable DCLK (preferably hold LOW) when DXMIT is HIGH.
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相关代理商/技术参数 |
参数描述 |
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| DDC112UG4 | 功能描述:模数转换器 - ADC Dual Current Input 20-Bit 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 |
| DDC112UK | 功能描述:模数转换器 - ADC Dual Current Input 20-Bit 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 |
| DDC112UK | 制造商:Texas Instruments 功能描述:DUAL CURRENT INPUT 20 BIT ANALOG/DIGITAL |
| DDC112UK | 制造商:Texas Instruments 功能描述:20BIT ADC DUAL SMD SOIC28 112 |
| DDC112UK/1K | 功能描述:模数转换器 - ADC Dual Current Input 20-Bit 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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