Datasheet

MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
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ELECTRICAL CHARACTERISTICS—MAX1415 (continued)
(V
DD
= 3V, GND = 0, V
REF+
= 1.225V, V
REF-
= GND, external f
CLKIN
= 2.4576MHz, CLKDIV bit = 0, C
REF+
to GND = 0.1µF, C
REF-
to
GND = 0.1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Gain = 1 34
Gain = 2 38
Gain = 4 45
AIN Input Capacitance
Gain = 8 to 128 60
pF
AIN Input Sampling Rate f
s
Gain = 1 to 128
f
CLKIN
/
64
MHz
Gain = 1 105
Gain = 2 110
Gain = 4 120
Input Common-Mode Rejection CMR
Gain = 8 to 128 130
dB
Normal-Mode 50Hz Rejection
For filter notches of 25Hz, 50Hz,
±0.02 × f
NOTCH
98 dB
Normal-Mode 60Hz Rejection
For filter notches of 20Hz, 60Hz,
±0.02 × f
NOTCH
98 dB
Common-Mode 50Hz Rejection
For filter notches of 25Hz, 50Hz,
±0.02 × f
NOTCH
150 dB
Common-Mode 60Hz Rejection
For filter notches of 20Hz, 60Hz,
±0.02 × f
NOTCH
150 dB
EXTERNAL REFERENCE (REF+, REF-)
REF Differential Input Range V
REF
(Note 9) 1.00 1.75 V
REF Absolute Input Voltage
Range
GND V
DD
V
REF Input Capacitance Gain = 1 to 128 10 pF
REF Input Sampling Rate f
s
f
CLKIN
/
64
MHz
DIGITAL INPUTS (DIN, SCLK, CS, RESET)
Input High Voltage V
IH
2.0 V
Input Low Voltage V
IL
0.4 V
DIN, CS, RESET 250
Input Hysteresis V
HYST
SCLK 500
mV
Input Current I
IN
±1µA
Input Capacitance 5pF
CLKIN INPUT
CLKIN Input High Voltage V
CLKINH
2.5 V
CLKIN Input Low Voltage V
CLKINL
0.4 V
CLKIN Input Current I
CLKIN
±10 µA
DIGITAL OUTPUTS (DOUT, DRDY, CLKOUT)
DOUT and DRDY, I
SINK
= 100µA 0.4
Output-Voltage Low V
OL
CLKOUT, I
SINK
= 10µA 0.4
V