AS1545_1 AMSCO [austriamicrosystems AG], AS1545_1 Datasheet - Page 20

• Manufacturer Part Number: AS1545_1
• Description: Dual, 12-Bit, 1MSPS, SAR ADC
• Manufacturer: AMSCO [austriamicrosystems AG]

AS1545
Datasheet - D e t a i l e d D e s c r i p t i o n
Analog Input Modes
Table 5. Address Map
Table 6. Input Range
www.austriamicrosystems.com
Address Map
SGL/DIFF
SGL/
DIFF
1
1
1
1
1
1
0
0
0
0
0
0
0
1
1
0
0
0
0
A2
0
0
0
0
1
1
0
0
0
0
1
1
1
Range
0
1
0
1
0
1
A1
0
0
1
1
0
0
0
0
1
1
0
0
1
-V
-V
REF
Ain+ - Ain-
0 to 2V
0 to 2V
REF
0 to V
0 to V
/2 to +V
Range
A0
0
1
0
1
0
1
0
1
0
1
0
1
0
to +V
REF
REF
REF
REF
REF
REF
AIN+
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN0
AIN0
AIN2
AIN2
AIN4
AIN4
AIN0
/2
ADC A
2’s comp
2’s comp
Coding
Straight
Straight
Straight
Straight
GND
GND
GND
GND
GND
GND
AIN1
AIN1
AIN3
AIN3
AIN5
AIN5
AIN1
AIN-
Revision 1.01
BIN+
BIN0
BIN1
BIN2
BIN3
BIN4
BIN5
BIN0
BIN0
BIN2
BIN2
BIN4
BIN4
BIN0
Output Binary= 0101 0101 0101 (its 2’s comp)
Output Binary = 0111 1111 1111 (its 2’s comp)
ADC B
Output Binary = 1010 1010 1010
Output Binary = 0101 0101 0101
Output Binary = 0101 1010 0111
Output Binary = 1011 0100 1110
GND
GND
GND
GND
GND
GND
BIN1
BIN1
BIN3
BIN3
BIN5
BIN5
BIN1
BIN-
Output Decimal = 2894
Output Decimal = 1447
Output Decimal = 2703
Output Decimal = 1365
Output Decimal = 4095
Output Decimal= 3413
AIN+ - AIN- = 1.766 V
AIN+ - AIN- = 1.666 V
AIN+ - AIN- = 1.666 V
AIN+ - AIN- = 1.666 V
AIN+ - AIN- = 1.666 V
AIN+ - AIN- = 1.766V
Example
Difference – A/B Phases –
Pseudo Differential
Pseudo Differential
Pseudo Differential
Pseudo Differential
Fully Differential
Fully Differential
Fully Differential
Single Ended
Single Ended
Single Ended
Single Ended
Single Ended
Single Ended
Comments
Counter
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