参数资料
型号: DDC118IRTCT
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 8-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQCC48
封装: GREEN, PLASTIC, QFN-48
文件页数: 8/35页
文件大小: 653K
代理商: DDC118IRTCT
DDC118
SBAS325B JUNE 2004 REVISED APRIL 2009
www.ti.com
16
t
12
t
12
t
14
t
13
T
INT
T
INT
End Integration Side A
Start Integration Side B
Side A
Data Ready
Side B
Data Ready
Side A
End Integration Side B
Start Integration Side A
End Integration Side A
Start Integration Side B
CONV
DVALID
A/D Conversion
Inputs 1, 2, 5, and 6 (Internal)
A/D Conversion
Inputs 3, 4, 7, and 8 (Internal)
t
14
t
13
Side B
Figure 12. Timing Diagram of the Internal Operation in Continuous Mode of the DDC118
Table 7. Timing for the Internal Operation in Continuous Mode
CLK = 4MHz, CLK_4X = 0
CLK = 4.8MHz, CLK_4X = 0
SYMBOL
DESCRIPTION
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
TINT
Integration Period (continuous mode)
400
1,000,000
320
1,000,000
s
t12
A/D Conversion Time (internally controlled)
169.5
141.25
s
t13
A/D Conversion Reset Time (internally controlled)
4
3.333
s
t14
Integrator and A/D Conversion Reset Time
(internally controlled)
23
19.167
s
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