Datasheet

MX7705
16-Bit, Low-Power, 2-Channel,
Sigma-Delta ADC
_______________________________________________________________________________________ 5
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER REQUIREMENTS
Power-Supply Voltage V
DD
2.70 5.25 V
V
DD
= 5V 0.45
Unbuffered
f
CLKIN
=1MHz,
gain =1 to 128
V
DD
= 3V 0.32
V
DD
= 5V 0.7
Buffered,
f
CLKIN
=1MHz,
gain =1 to 128
V
DD
= 3V 0.6
V
DD
= 5V,
gain = 1 to 4
0.6
V
DD
= 5V,
gain = 8 to 128
0.85
V
DD
= 3V,
gain = 1 to 4
0.4
Unbuffered,
f
CLKIN
= 2.4576MHz
V
DD
= 3V,
gain = 8 to 128
0.6
V
DD
= 5V,
gain = 1 to 4
0.9
V
DD
= 5V,
gain = 8 to 128
1.3
V
DD
= 3V,
gain = 1 to 4
0.7
Buffered,
f
CLKIN
= 2.4576MHz
V
DD
= 3V,
gain = 8 to 128
1.1
mA
V
DD
= 5V 16
Power-Supply Current (Note 12) I
DD
Power-down mode
(Note 13)
V
DD
= 3V 8
µA
V
DD
= 4.75V to 5.25V (Note 14)
Power-Supply Rejection Ratio PSRR
V
DD
= 2.7V to 3.6V (Note 14)
dB
EXTERNAL CLOCK TIMING SPECIFICATIONS
CLKIN Frequency f
CLKIN
(Note 15) 400 2500 kHz
Duty Cycle 40 60 %
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.)