參數(shù)資料
型號(hào): THS14F03IPFBG4
廠商: TEXAS INSTRUMENTS INC
元件分類: ADC
英文描述: 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48
封裝: GREEN, PLASTIC, TQFP-48
文件頁(yè)數(shù): 13/24頁(yè)
文件大?。?/td> 329K
代理商: THS14F03IPFBG4
THS14F01, THS14F03
14-BIT, 1 MSPS/ 3 MSPS, DSP COMPATIBLE, ANALOG-TO-DIGITAL CONVERTERS
WITH FIFO INTERNAL REFERENCE AND PGA
SLAS285 – JUNE 2000
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
ac-coupled single-ended configuration
If the application does not require the signal bandwidth to include dc, the level shift shown in Figure 4 is not
necessary.
IN+
IN–
THS14F01/3
REF+
REF–
+
10 nF
10 k
10 k
10 k
10 k
100 pF
22
10 k
10 k
Figure 19. Single-Ended With Level Shift
Because the signal swing on the op-amp is centered around ground, it is more likely that the signal stays within
the linear region of the op-amp transfer function, thus increasing the overall ac performance.
IN [VPEAK]
OUTPUT [PEAK]
REF
– full scale
0
REF
+ full scale
Compared to the transformer-coupled configuration, the swing on IN– is twice as big, which can decrease the
ac performance (SNR, SFD, and THD).
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