參數資料
型號: THS1401QPFB
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: PLASTIC, TQFP-48
文件頁數: 11/30頁
文件大?。?/td> 475K
代理商: THS1401QPFB
THS1401, THS1403, THS1408
14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
WITH INTERNAL REFERENCE AND PGA
SLAS248B – DECEMBER 1999 – REVISED JANUARY 2001
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
single-ended configuration
In this configuration, the input signal is level shifted by
REF/2.
IN+
IN–
THS1401/3/8
REF+
REF–
+
10 k
100 pF
10 k
22
10 k
10 k
10 k
+ 10 k
Figure 21. Single-Ended With Level Shift
The following table shows the input voltages for negative full-scale output, zero output, and positive full-scale
output:
IN+ [V]
OUTPUT
REF
– full scale
0
REF
+ full scale
Note that the resistors of the op-amp and the op-amp all introduce gain and offset errors. Those errors can be
trimmed by varying the values of the resistors.
Because of the added offset, the op-amp does not necessarily operate in the best region of its transfer curve
(best linearity around zero) and therefore may introduce unacceptable distortion. For ac signals, an alternative
is described in the following section.
相關PDF資料
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THS1403QPFB 1-CH 14-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP48
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