Datasheet

MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
_______________________________________________________________________________________ 7
FFT PLOT CHANNEL A (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
MAX1191 toc06
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
3.53.02.0 2.51.0 1.50.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
04.0
f
CLK
= 7.500567MHz
f
INA
= 1.000747MHz
f
INB
= 3.020553MHz
A
INA
= A
INB
= -0.5dB FS
f
INB
HD3
HD2
FFT PLOT CHANNEL B (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
MAX1191 toc07
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
3.53.02.0 2.51.0 1.50.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
04.0
f
CLK
= 7.500567MHz
f
INA
= 1.000747MHz
f
INB
= 3.020553MHz
A
INA
= A
INB
= -0.5dB FS
f
INA
HD3
HD2
FFT PLOT CHANNEL B (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
MAX1191 toc09
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
3.53.02.0 2.51.0 1.50.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
04.0
f
CLK
= 7.500567MHz
f
INA
= 3.020553MHz
f
INB
= 1.000747MHz
A
INA
= A
INB
= -0.5dB FS
f
INA
HD3
HD2
FFT PLOT CHANNEL A (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
MAX1191 toc08
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
3.53.02.0 2.51.0 1.50.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
04.0
f
CLK
= 7.500567MHz
f
INA
= 3.020553MHz
f
INB
= 1.000747MHz
A
INA
= A
INB
= -0.5dB FS
f
INB
HD3
HD2
TWO-TONE IMD PLOT (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
MAX1191 toc10
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
3.53.02.0 2.51.0 1.50.5
-80
-70
-60
-50
-40
-30
-20
-10
0
-90
04.0
f
IN2
f
IN1
f
CLK
= 7.500567MHz
f
IN1
= 1.8MHz
f
IN2
= 2.3MHz
A
IN
= -7dB FS
Typical Operating Characteristics (continued)
(V
DD
= 3.0V, OV
DD
= 1.8V, V
REFIN
= V
DD
(internal reference), C
L
≈ 10pF at digital outputs, differential input at -0.5dB FS, f
CLK
=
7.500567MHz at 50% duty cycle, T
A
= +25°C, unless otherwise noted.)