AS1542-BTSU ams, AS1542-BTSU Datasheet - Page 16

• Manufacturer Part Number: AS1542-BTSU
• Description: Analog to Digital Converters - ADC
• Manufacturer: ams

Specifications of AS1542-BTSU

• Rohs: yes
• Number Of Channels: 16/8
• Architecture: SAR
• Conversion Rate: 1 MSPs
• Resolution: 12 bit
• Input Type: Single-Ended/Differential
• Snr: 71 dB
• Interface Type: QSPI, SPI
• Operating Supply Voltage: 2.7 V to 5.25 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-28
• Maximum Power Dissipation: 18.4 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1

AS1542
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
CODING (page
Figure 24. Straight Binary Transfer Function for
Figure 26. Two’s Complement Transfer Function for
www.austriamicrosystems.com
11....101
00...010
00...001
00...000
00...011
11...110
11...111
011....111
000...010
000...001
000...000
100...001
100...000
011...110
111...101
111...110
111...111
SE/FDN = 1 and CODING = 1
0
SE/FDN = 1 and CODING = 0
RANGE = 1; V
RANGE = 0; V
Full Scale = V
Zero Scale = 0
1LSB = V
1
RANGE = 1; V
RANGE = 0; V
Full Scale = V
-Full Scale = 0
Zero Scale = V
1LSB = V
-FS
14).
2
REF
/4096
3
REF
Input Voltage V
REF
REF
REF
/4096
Input Voltage V
REF
=V
=2xV
REF
REF
REF
REFIN
=V
=2xV
/2
REFIN
REFIN
REFIN
ZS
INx
Full Scale
Transition
(LSB)
INx
(FS)
(LSB)
FS - 3/2LSB
+FS - 1LSB
Revision 1.00
Figure 25. Straight Binary Transfer Function for
Figure 27. Two’s Complement Transfer Function for
11....101
00...011
00...010
00...001
00...000
11...110
11...111
011....111
000...010
000...001
000...000
100...001
100...000
011...110
111...101
111...110
111...111
ZS
SE/FDN = 0 and CODING = 1
SE/FDN = 0 and CODING = 0
RANGE (page
RANGE = 1; V
RANGE = 0; V
Full Scale = +V
Zero Scale = -V
1LSB = V
ZS+1LSB
RANGE = 1; V
RANGE = 0; V
Full Scale = +V
-Full Scale = -V
Zero Scale = 0
1LSB = V
-FS
REF
Input Voltage V
REF
/4096
Input Voltage V
REF
REF
REF
REF
/4096
REF
REF
=V
=2xV
REF
REF
/2
14),
/2
REFIN
=V
=2xV
/2
/2
REFIN
REFIN
SE/FDN (page 14)
REFIN
INx
ZS
INx
- V
Full Scale
Transition
INy
- V
(FS)
INy
(LSB)
(LSB)
FS - 3/2LSB
+FS - 1LSB
and
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