Datasheet

MX7705
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADC
4 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CLKIN INPUT
V
DD
= 4.75V to 5.25V 3.5
CLKIN Input High Voltage V
CLKINH
V
DD
= 2.7V to 3.6V 2.5
V
V
DD
= 4.75V to 5.25V 0.8
CLKIN Input Low Voltage V
CLKINL
V
DD
= 2.7V to 3.6V 0.4
V
CLKIN Input Current I
CLKIN
±10 µA
DIGITAL OUTPUTS (DOUT, DRDY, CLKOUT)
DOUT and DRDY,
I
SINK
= 800µA
0.4
V
DD
= 5V
CLKOUT,
I
SINK
= 10µA
0.4
DOUT and DRDY,
I
SINK
= 100µA
0.4
Output Voltage Low V
OL
V
DD
= 3V
CLKOUT,
I
SINK
= 10µA
0.4
V
DOUT and DRDY,
I
SOURCE
= 200µA
4.0
V
DD
= 5V
CLKOUT,
I
SOURCE
= 10µA
4.0
DOUT and DRDY,
I
SOURCE
= 100µA
V
DD
-
0.6V
Output Voltage High V
OH
V
DD
= 3V
CLKOUT,
I
SOURCE
= 10µA
V
DD
-
0.6V
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
REF
/
GAIN
V
Offset Calibration Range
GAIN = selected PGA gain (1 to 128)
(Note 10)
-1.05 ×
V
REF
/
GAIN
1.05 ×
V
REF
/
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
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3V or 5V, GND = 0, V
REF+
= 1.225V for V
DD
= 3V and V
REF+
= 2.5V for V
DD
= 5V, 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.)