MAX1185 Maxim, MAX1185 Datasheet - Page 6

• Manufacturer Part Number: MAX1185
• Description: Dual 10-Bit / 20Msps / +3V / Low-Power ADC with Internal Reference and Multiplexed Parallel Outputs
• Manufacturer: Maxim

Dual 10-Bit, 20Msps, +3V, Low-Power ADC with
Internal Reference and Multiplexed Parallel Outputs
(V
unless otherwise noted.)
6
DD
-100
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
_______________________________________________________________________________________
62
60
58
56
54
= +3V, OV
0
0
SIGNAL-TO-NOISE PLUS DISTORTION vs.
1
0
0
FFT PLOT CHA (DIFFERENTIAL INPUT,
FFT PLOT CHB (DIFFERENTIAL INPUT,
f
f
f
AINA = -0.525dB FS
f
f
f
AINA = -0.471dB FS
HD3
CLK
INA
INB
CLK
INA
INB
1
1
= 5.9742906MHz
= 7.5343935MHz
= 7.5343935MHz
= 11.9852035MHz
= 20.0005678MHz
= 20.0005678MHz
ANALOG INPUT FREQUECNY
8192-POINT DATA RECORD)
ANALOG INPUT FREQUENCY (MHz)
ANALOG INPUT FREQUENCY (MHz)
8192-POINT DATA RECORD)
ANALOG INPUT FREQUENCY (MHz)
2
2
HD2
DD
HD3
3
3
= +2.5V, V
4
4
CHA
10
5
5
CHB
6
6
REFIN
HD2
7
7
8
8
= +2.048V, differential input at -0.5dB FS, f
CHA
9
CHB
9
100
10
10
-100
-100
-65
-68
-71
-74
-77
-80
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
TWO-TONE IMD PLOT (DIFFERENTIAL INPUT,
0
1
0
FFT PLOT CHB (DIFFERENTIAL INPUT,
f
f
f
AIN = -6.5dB FS
TWO-TONE ENVELOPE =
CLK
IN1
IN2
-0.498dB FS
f
f
f
AINA = -0.462dB FS
CLK
INA
INB
TOTAL HARMONIC DISTORTION vs.
1
1
HD3
= 11.9852035MHz
= 12.8934324MHz
= 20.0005678MHz
= 5.9742906MHz
= 7.5243935MHz
= 20.0005678MHz
ANALOG INPUT FREQUENCY (MHz)
ANALOG INPUT FREQUENCY
8192-POINT DATA RECORD)
ANALOG INPUT FREQUENCY (MHz)
8192-POINT DATA RECORD)
ANALOG INPUT FREQUENCY (MHz)
IMD2
2
2
3
3
HD2
4
4
CHB
IMD3
10
5
5
f
Typical Operating Characteristics
IN2
6
6
7
7
CHA
CLK
8
8
IMD3
= 20.00057MHz, C
9
CHB
9
f
IN1
100
10
10
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
61
60
58
57
56
55
80
76
72
68
64
60
59
0
1
0
1
L
FFT PLOT CHA (DIFFERENTIAL INPUT,
SPURIOUS-FREE DYNAMIC RANGE vs.
f
f
f
AINA = -0.489dB FS
CLK
INA
INB
≈ 10pF, T
1
HD3
= 7.5343935MHz
= 11.9852035MHz
= 20.0005678MHz
SIGNAL-TO-NOISE RATIO vs.
ANALOG INPUT FREQUENCY
ANALOG INPUT FREQUENCY (MHz)
ANALOG INPUT FREQUENCY (MHz)
8192-POINT DATA RECORD)
ANALOG INPUT FREQUENCY (MHz)
ANALOG INPUT FREQUENCY
2
3
CHA
A
HD2
CHA
4
= +25°C,
10
10
5
CHB
CHB
6
7
8
CHA
9
100
100
10