MAX1156 Datasheet, PDF (12/15 Pages) Maxim Integrated Products – 14-Bit, 135ksps, Single-Supply ADCs with Bipolar Analog Input Range

14-Bit, 135ksps, Single-Supply ADCs with
Bipolar Analog Input Range
ANALOG
INPUT
MAX427
REF
MAX1156
**
MAX1158
MAX1174
*
AIN
*MAX1156 ONLY.
**MAX1158/MAX1174 ONLY.
Figure 11. MAX1156/MAX1158/MAX1174 Fast-Settling Input
Buffer
MAX1174
ANALOG INPUT CURRENT
vs. ANALOG INPUT VOLTAGE
1.5
1.0
0.5
SHUTDOWN
MODE
0
-0.5
STANDBY
-1.0
MODE
-1.5
-5.0
-2.5
0
2.5
5.0
ANALOG INPUT VOLTAGE (V)
Figure 12a. MAX1174 Analog Input Current
supply by connecting them with a low value (10Ω)
resistor or ferrite bead.
The ADC is sensitive to high-frequency noise on the
AV_DD supply. Bypass AV_DD to AGND with a 0.1µF
capacitor in parallel with a 1µF to 10µF low-ESR capacitor
with the smallest capacitor closest to the device. Keep
capacitor leads short to minimize stray inductance.
Definitions
Integral Nonlinearity
Integral nonlinearity (INL) is the deviation of the values
on an actual transfer function from a straight line. This
straight line can be either a best-straight-line fit or a line
drawn between the endpoints of the transfer function,
once offset and gain errors have been nullified. The
static linearity parameters for the MAX1156/MAX1158/
MAX1174 are measured using the endpoint method.
Differential Nonlinearity
Differential nonlinearity (DNL) is the difference between
an actual step-width and the ideal value of 1LSB. A
DNL error specification of 1LSB guarantees no missing
codes and a monotonic transfer function.
MAX1158
ANALOG INPUT CURRENT
vs. ANALOG INPUT VOLTAGE
1.5
1.0
0.5
SHUTDOWN
MODE
0
-0.5
STANDBY
MODE
-1.0
-1.5
-10
-5
0
5
10
ANALOG INPUT VOLTAGE (V)
Figure 12b. MAX1158 Analog Input Current
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