MAX11120–MAX11128
1Msps, Low-Power, Serial 12-/10-/8-Bit,
4-/8-/16-Channel ADCs
ELECTRICAL CHARACTERISTICS (MAX11122/MAX11125/MAX11128) (continued)
(V
= 2.35V to 3.6V, V
= 1.5V to 3.6V, f
= 1Msps, f
= 16MHz, 50% duty cycle, V
= V , T = -40NC to +125NC,
DD
OVDD
SAMPLE
SCLK
REF+ DD A
unless otherwise noted. Typical values are at T = +25NC.) (Note 2)
A
PARAMETER
Full-Power Bandwidth
Full-Linear Bandwidth
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MHz
-3dB
50
7.5
1.5
-0.1dB
SINAD > 70dB
MHz
-0.5dB below full scale of
249.878kHz sine wave input to the
channel being sampled, apply full-
scale 219.97kHz sine wave signal to
all 15 nonselected input channels
Crosstalk
-88
dB
CONVERSION RATE
Power-Up Time
t
Conversion cycle, external clock
Internally clocked (Note 8)
2
Cycles
ns
PU
Acquisition Time
t
156
5.9
ACQ
µs
Conversion Time
t
CONV
Externally clocked, f
16 cycles (Note 8)
= 16MHz,
SCLK
1000
0.16
ns
External Clock Frequency
Aperture Delay
f
16
MHz
ns
SCLK
8
Aperture Jitter
RMS
30
ps
ANALOG INPUT
Unipolar (single-ended and pseudo
differential)
0
V
REF+
Input Voltage Range
V
V
INA
RANGE bit set to 0
Bipolar
-V
/2
V
/2
REF+
REF+
(Note 9)
AIN+, AIN- relative to GND
= V , GND
RANGE bit set to 1
-V
V
REF+
REF+
Absolute Input Voltage Range
Static Input Leakage Current
-0.1
V
+ 0.1
V
REF+
I
V
-0.1
15
1.5
FA
ILA
AIN_
DD
During acquisition time,
RANGE bit = 0 (Note 10)
Input Capacitance
C
pF
AIN
During acquisition time,
RANGE bit = 1 (Note 10)
7.5
EXTERNAL REFERENCE INPUT
REF- Input Voltage Range
V
-0.3
1
+1
V
V
REF-
REF+ Input Voltage Range
REF+ Input Current
V
V
+ 50mV
REF+
DD
V
V
= 2.5V, f
= 2.5V, f
= 1Msps
= 0
36.7
0.1
REF+
SAMPLE
I
FA
REF+
REF+
SAMPLE
����������������������������������������������������������������� Maxim Integrated Products
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
