Datasheet

V
MAX1110/MAX1111
+2.7V, Low-Power, Multichannel,
Serial 8-Bit ADCs
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 2.7V to 5.5V; unipolar input mode; V
COM
= 0V; f
SCLK
= 500kHz, external clock (50% duty cycle); 10 clocks/conversion cycle
(50ksps); 1µF capacitor at REFOUT; T
A
= T
MIN
to T
MAX
; unless otherwise noted.)
On/off-leakage current, V
CH_
= 0V or V
DD
Used for data transfer only
(Note 6)
External clock, 2MHz
CONDITIONS
ppm/°C±50
mA3.5REFOUT Short-Circuit Current
pF18Input Capacitance
µA±0.01 ±1Multiplexer Leakage Current
1
2
50 500
kHz400Internal Clock Frequency
0 to 0.5mA output load mV2.5Load Regulation (Note 8)
ns10Aperture Delay
µs1t
ACQ
Track/Hold Acquisition Time
UNITSMIN TYP MAXSYMBOLPARAMETER
ps
V
1
V
DD
+
0.05
Input Voltage Range
(Note 9) µA120Input Current
<50Aperture Jitter
External clock, 500kHz, 10 clocks/conversion 20
Internal clock
µs
25 55
t
CONV
Conversion Time (Note 5)
Bipolar input, V
COM
= V
REFIN
/2
Unipolar input, V
COM
= 0V
V
COM
±
V
REFIN
/2
V
0V
REFIN
Input Voltage Range, Single-
Ended and Differential (Note 7)
V1.968 2.048 2.128REFOUT Voltage
External Clock-Frequency Range
MHz
kHz
Capacitive Bypass at REFOUT µF
REFOUT Temperature Coefficient
V2.7 5.5V
DD
Supply Voltage
85 250
I
DD
Supply Current (Note 2)
V
DD
= 2.7V to 3.6V
Full-scale input
C
LOAD
= 10pF
V
DD
= 2.7V to 3.6V; external reference,
2.048V; full-scale input
mV±0.4 ±4PSR
Power-Supply Rejection
(Note 10)
Operating mode
2
µA
Power-down
3.2 10
Software
SHDN at DGND
Operating mode 120 250
V
DD
= 5.5V
Full-scale input
C
LOAD
= 10pF
Reference disabled
Reference disabled
45
80
CONVERSION RATE
ANALOG INPUT
INTERNAL REFERENCE
EXTERNAL REFERENCE AT REFIN
POWER REQUIREMENTS