Datasheet

MAX1415/MAX1416
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADCs
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ELECTRICAL CHARACTERISTICS—MAX1416 (continued)
(V
DD
= 5V, GND = 0, V
REF+
= 2.5V, V
REF-
= GND, 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
EXTERNAL REFERENCE (REF+, REF-)
REF Differential Input Range V
REF
(Note 9) 1 3.5 V
REF Absolute Input Voltage
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
2V
Input Low Voltage V
IL
0.8 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
3.5 V
CLKIN Input Low Voltage V
CLKINL
0.8 V
CLKIN Input Current I
CLKIN
±10 µA
DIGITAL OUTPUTS (DOUT, DRDY, CLKOUT)
DOUT and DRDY, I
SINK
= 800µA 0.4
Output-Voltage Low V
OL
CLKOUT, I
SINK
= 10µA 0.4
V
DOUT and DRDY, I
SOURCE
= 200µA 4.0
Output-Voltage High V
OH
CLKOUT, I
SOURCE
= 10µA 4.0
V
Tri-State Leakage Current I
L
DOUT only ±10 µA
Tri-State Output Capacitance C
OUT
DOUT only 9 pF
SYSTEM CALIBRATION
Full-Scale Calibration Range
GAIN = selected PGA gain (1 to 128)
(Note 10)
-1.05 ×
V
REF
/
GAIN
+ 1.05 ×
V
RE F
/
GAIN
V
Offset Calibration Range
GAIN = selected PGA gain (1 to 128)
(Note 10)
-1.05 ×
V
REF
/
GAIN
+ 1.05 ×
V
RE F
/
GAIN
V
Input Span
GAIN = selected PGA gain (1 to 128)
(Notes 10, 11)
0.8 ×
V
REF
/
GAIN
2.1 ×
V
REF
/
GAIN
V
POWER REQUIREMENTS
Power-Supply Voltage V
DD
4.75 5.25 V