Datasheet

MAX11120–MAX11128
1Msps, Low-Power, Serial 12-/10-/8-Bit,
4-/8-/16-Channel ADCs
7Maxim Integrated
ELECTRICAL CHARACTERISTICS (MAX11121/MAX11124/MAX11127) (continued)
(V
DD
= 2.35V to 3.6V, V
OVDD
= 1.5V to 3.6V, f
SAMPLE
= 1Msps, f
SCLK
= 16MHz, 50% duty cycle, V
REF+
= V
DD
, T
A
= -40NC to +125NC,
unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
EXTERNAL REFERENCE INPUT
REF- Input Voltage Range V
REF- -0.3 +1 V
REF+ Input Voltage Range V
REF+ 1
V
DD +
50mV
V
REF+ Input Current I
REF+
VREF+ = 2.5V, fSAMPLE = 1Msps 36.7 FA
V
REF+ = 2.5V, fSAMPLE = 0 0.1 FA
DIGITAL INPUTS (SCLK, DIN, CS, CNVST)
Input Voltage Low V
IL
VOVDD O
0.25
V
Input Voltage High V
IH
VOVDD O
0.75
V
Input Hysteresis V
HYST
VOVDD O
0.15
mV
Input Leakage Current I
IN VAIN_ = 0V or VDD ±0.09 FA
Input Capacitance C
IN 3 pF
DIGITAL OUTPUTS (DOUT, EOC)
Output Voltage Low V
OL ISINK = 200FA
V
OVDD O
0.15
V
Output Voltage High V
OH ISOURCE = 200FA
V
OVDD O
0.85
V
Three-State Leakage Current I
L CS = VDD -0.3 FA
Three-State Output Capacitance C
OUT CS = VDD 4 pF
POWER REQUIREMENTS
Positive Supply Voltage V
DD 2.35 3.0 3.6 V
Digital I/O Supply Voltage V
OVDD 1.5 3.0 3.6 V
Positive Supply Current I
DD
fSAMPLE = 1Msps 1.8 2.5
mAf
SAMPLE = 0 (1Msps devices) 1
Full shutdown 0.0015 0.006
Power Dissipation
Normal mode
(external
reference)
V
DD = 3V,
f
SAMPLE = 1Msps
5.4
mW
V
DD = 2.35V,
f
SAMPLE = 1Msps
3.8
AutoStandby
V
DD = 3V,
f
SAMPLE = 1Msps
2.6
V
DD = 2.35V,
f
SAMPLE = 1Msps
1.6
Full/
AutoShutdown
V
DD = 3V 4.5
FW
V
DD = 2.35V 2.1