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AS1544 数据表(PDF) 16 Page - ams AG

部件名 AS1544
功能描述  8/4-Channel, 1 Msps, 12-Bit ADC with Sequencer
PDF  29 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS1544 数据表(HTML) 16 Page - ams AG

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www.austriamicrosystems.com
Revision 1.00
16 - 29
AS1543/44
Data Sheet - D e t a i l e d D e s c r i p t i o n
Transfer Functions
Output coding and transfer function depend on the control register bits RANGE (page 14), SE/FDN (page 14) and
CODING (page 14).
Figure 24. Straight Binary Transfer Function for
Figure 25. Straight Binary Transfer Function for
SE/FDN = 1 and CODING = 1
SE/FDN = 0 and CODING = 1
Figure 26. Two’s Complement Transfer Function for
Figure 27. Two’s Complement Transfer Function for
SE/FDN = 1 and CODING = 0
SE/FDN = 0 and CODING = 0
11...111
11...110
11....101
00...011
00...010
00...001
00...000
11...111
11...110
11....101
00...011
00...010
00...001
00...000
01
2
3
Input Voltage VINx (LSB)
FS - 3/2LSB
Full Scale = VREF
Zero Scale = 0
1LSB = VREF/4096
ZS
ZS+1LSB
Input Voltage VINx - VINy (LSB)
FS - 3/2LSB
Full Scale
(FS)
Transition
Full Scale = +VREF/2
Zero Scale = -VREF/2
1LSB = VREF/4096
RANGE = 1; VREF=VREFIN
RANGE = 0; VREF=2xVREFIN
Full Scale
(FS)
Transition
RANGE = 1; VREF=VREFIN
RANGE = 0; VREF=2xVREFIN
011....111
011...110
000...010
000...001
000...000
111...111
111...110
111...101
100...001
100...000
-FS
ZS
Input Voltage VINx (LSB)
+FS - 1LSB
011....111
011...110
000...010
000...001
000...000
111...111
111...110
111...101
100...001
100...000
-FS
ZS
Input Voltage VINx - VINy (LSB)
+FS - 1LSB
RANGE = 1; VREF=VREFIN
RANGE = 0; VREF=2xVREFIN
Full Scale = VREF
-Full Scale = 0
Zero Scale = VREF/2
1LSB = VREF/4096
RANGE = 1; VREF=VREFIN
RANGE = 0; VREF=2xVREFIN
Full Scale = +VREF/2
-Full Scale = -VREF/2
Zero Scale = 0
1LSB = VREF/4096



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