Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
Typical Operating Characteristics (continued)
(V
= 3.0V, OV
= 1.8V, V
= V
(internal reference), C ≈ 10pF at digital outputs, differential input at -0.5dB FS, f
=
DD
DD
REFIN
DD
L
CLK
7.500567MHz at 50% duty cycle, T = +25°C, unless otherwise noted.)
A
FFT PLOT CHANNEL A (SINGLE-ENDED INPUTS,
FFT PLOT CHANNEL B (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
8192-POINT DATA RECORD)
0
0
f
f
f
= 7.500567MHz
= 1.000747MHz
= 3.020553MHz
= A = -0.5dB FS
f
f
f
= 7.500567MHz
= 1.000747MHz
= 3.020553MHz
= A = -0.5dB FS
CLK
INA
INB
CLK
INA
INB
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
A
INA
A
INA
INB
INB
HD2
HD3
HD2
HD3
f
INA
f
INB
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
ANALOG INPUT FREQUENCY (MHz)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
ANALOG INPUT FREQUENCY (MHz)
FFT PLOT CHANNEL A (SINGLE-ENDED INPUTS,
FFT PLOT CHANNEL B (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
8192-POINT DATA RECORD)
0
0
f
f
f
= 7.500567MHz
= 3.020553MHz
= 1.000747MHz
= A = -0.5dB FS
f
f
f
= 7.500567MHz
= 3.020553MHz
= 1.000747MHz
= A = -0.5dB FS
CLK
INA
INB
CLK
INA
INB
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
A
INA
A
INA
INB
INB
INB
HD3
HD2
f
f
HD2
INA
HD3
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
ANALOG INPUT FREQUENCY (MHz)
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
ANALOG INPUT FREQUENCY (MHz)
TWO-TONE IMD PLOT (SINGLE-ENDED INPUTS,
8192-POINT DATA RECORD)
0
f
f
f
= 7.500567MHz
= 1.8MHz
= 2.3MHz
= -7dB FS
CLK
IN1
IN2
-10
-20
-30
-40
-50
-60
-70
-80
-90
A
IN
f
f
IN2
IN1
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
ANALOG INPUT FREQUENCY (MHz)
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