MAX11120–MAX11128
1Msps, Low-Power, Serial 12-/10-/8-Bit,
4-/8-/16-Channel ADCs
ELECTRICAL CHARACTERISTICS (MAX11121/MAX11124/MAX11127) (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
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DYNAMIC PERFORMANCE (250kHz, input sine wave) (Notes 3 and 7)
Signal-to-Noise Plus Distortion
Signal-to-Noise Ratio
SINAD
SNR
61
61
61.7
61.7
dB
dB
Total Harmonic Distortion
(Up to the 5th Harmonic)
THD
-86
-76
dB
Spurious-Free Dynamic Range
Intermodulation Distortion
SFDR
IMD
77
85
-84
50
dB
dB
f = 249.878kHz, f = 219.97kHz
1
2
-3dB
MHz
MHz
MHz
Full-Power Bandwidth
Full-Linear Bandwidth
-0.1dB
7.5
1.5
SINAD > 61dB
-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
2
Cycles
ns
PU
Acquisition Time
t
156
5.9
ACQ
Internally
clocked
f
= 1Msps
SAMPLE
µs
ns
(Note 8)
Conversion Time
t
CONV
Externally clocked, f
16 cycles (Note 8)
= 16MHz,
SCLK
1000
0.16
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 -V
Bipolar (Note 9)
/2
+V
/2
REF+
REF+
RANGE bit set to 1 -V
+V
REF+
REF+
Absolute Input Voltage Range
Static Input Leakage Current
AIN+, AIN- relative to GND
= V , GND
-0.1
V
+ 0.1
V
REF+
I
V
-0.1
15
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
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6
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