MAX11126ATI+ Maxim Integrated, MAX11126ATI+ Datasheet - Page 31

• Manufacturer Part Number: MAX11126ATI+
• Description: Analog to Digital Converters - ADC 8Bit 16Ch 1Msps Precision ADC
• Manufacturer: Maxim Integrated

Specifications of MAX11126ATI+

• Rohs: yes
• Number Of Channels: 16/8
• Architecture: SAR
• Conversion Rate: 1 MSPs
• Resolution: 8 bit
• Input Type: Single-Ended/Pseudo-Differential
• Snr: 49.6 dB
• Interface Type: 3-Wire, QSPI, SPI
• Operating Supply Voltage: 2.35 V to 3.6 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: TQFN-28
• Maximum Power Dissipation: 2758 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1
• Voltage Reference: 1 V

Table 8. Analog Input Configuration and Unipolar/Bipolar Waveforms
Table 9. ADC Output as a Function of Unipolar/Bipolar Register Settings
Maxim Integrated
CHANNEL SELECTION
Differential
Differential
CHSEL[3:0] = 0000
CHSEL[3:0] = 0001
Single-
Ended
Fully
Fully
AIN0 Selection:
AIN1 Selection:
CHSCAN0 = 1
CHSCAN1 = 1
CONFIGURATION
ANALOG INPUT
BIT NAME
(2’s Comp)
Unipolar
Unipolar
Coding)
Coding)
(Binary
(Binary
Bipolar
UCH0/1
UNIPOLAR REGISTER
1Msps, Low-Power, Serial 12-/10-/8-Bit,
X
X
0
0
1
1
0
0
1
1
REF+
REF+
REF+
V
V
V
V
PDIFF_COM
IN+
IN+
IN-
IN-
V
REFSEL = 0
IN-
V
0
0
0
0
1
0
0
0
0
1
IN+
SUPPORTED WAVEFORMS
GND, AIN15
PDIFF_COM = 1
GND
GND
REF+
RANGE: 1V - V
REF+
RANGE: 1V - V
REF+
RANGE: 1V - V
REF+
2
BIPOLAR REGISTER
(DC OFFSET
SINUSOID)
V
OR
IN-
DD
DD
DD
BCH0/1
0
1
0
1
X
0
1
0
1
X
REF+
REF+
REF+
(DC OFFSET
SINUSOID)
MAX11120–MAX11128
V
OR
IN-
V
4-/8-/16-Channel ADCs
IN-
REFSEL = 1
V
V
V
IN+
IN+
IN+
AIN0 (binary, unipolar)
AIN0/1 pair (two’s complement, bipolar)
AIN0/1 pair (binary, unipolar)
AIN0/1 pair (binary, unipolar); Unipolar register
takes precedence
AIN0 referred to REF-/AIN15 (binary, unipolar)
AIN1 (binary, unipolar)
AIN0/1 pair (two’s complement, bipolar)
AIN0/1 pair (binary, unipolar)
AIN0/1 pair (binary, unipolar), Unipolar register
takes precedence
AIN1 referred to REF-/AIN15 (binary, unipolar)
REF+
RANGE: 1V - V
1V
0V
-0.3V
REF+
RANGE: 1V - V
1V
0V
-0.3V
REF+
RANGE: 1V - V
1V
0V
-0.3V
REF-
REF-
REF-
DD
DD
DD
FUNCTION
Table 10. Unipolar Register:
Set desired channel(s) to 0
or PDIFF_COM to 1.
Counterpart Register
Table 11. Bipolar Register:
Set desired channel(s) to 0.
Table 10. Unipolar Register:
Set desired channel(s) to 1.
Counterpart Register
Table 11. Bipolar Register:
Set desired channel(s) to 0.
See Table 11. Bipolar
Register:
Set desired channel(s) to 1.
Counterpart Register
Table 10. Unipolar Register:
Set desired channel(s) to 0.
UNIPOLAR/BIPOLAR
REGISTER SETTING
31