MAX1157 Datasheet, PDF (3/15 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
ELECTRICAL CHARACTERISTICS (continued)
(AV_DD = DV_DD = +5V ±5%, external reference = +4.096V, C_REF = 10µF, C_REFADJ = 0.1µF, V_REFADJ = AV_DD, T_A = T_MIN to T_MAX,
unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
Input Current
Input Current Step at Power-Up
Input Capacitance
INTERNAL REFERENCE
REF Output Voltage
REF Output Tempco
REF Short-Circuit Current
EXTERNAL REFERENCE
REF and REFADJ Input Voltage
Range
SYMBOL
CONDITIONS
MIN
MAX1157,
0 ≤ V_AIN ≤ +10V
Normal/shutdown
mode
-0.1
I_AIN
MAX1159,
-10V ≤ V_AIN ≤ +10V
Normal operation
Shutdown mode
-1.8
-1.8
MAX1175,
Normal operation
-1.8
-5V ≤ V_AIN ≤ +5V
Shutdown mode
-1.8
MAX1159, V_AIN = +10V, shutdown mode to
operating mode
I_PU
MAX1175, V_AIN = +5V, shutdown mode to
operating mode
C_IN
TYP MAX UNITS
+2.0
+1.2
mA
+1.8
+0.4
+1.8
0.5
0.7
mA
1
1.4
10
pF
V_REF
I_REF-SC
4.056
4.096
±35
±10
4.136
V
ppm/°C
mA
3.8
4.2
V
REFADJ Buffer Disable Threshold
AV_DD -
0.4
AV_DD -
V
0.1
REF Input Current
I_REF
Normal mode, f_SAMPLE = 135ksps
Shutdown mode (Note 1)
60
100
µA
±0.1 ±10
REFADJ Input Current
DIGITAL INPUTS/OUTPUTS
I_REFADJ REFADJ = AV_DD
16
µA
Output High Voltage
V_OH
I_SOURCE = 0.5mA, DV_DD = +2.7V to +5.25V, DV_DD -
AV_DD = +5.25V
0.4
V
Output Low Voltage
V_OL
I_SINK = 1.6mA, DV_DD = +2.7V to +5.25V,
AV_DD = +5.25V
0.4
V
Input High Voltage
V_IH
0.7 ×
V
DV_DD
Input Low Voltage
V_IL
0.3 ×
DV_DD
V
Input Leakage Current
Input Hysteresis
Input Capacitance
Three-State Output Leakage
Three-State Output Capacitance
V_HYST
C_IN
I_OZ
C_OZ
Digital input = DV_DD or 0V
-1
+1
µA
0.2
V
15
pF
±10
µA
15
pF
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