AD9251 Analog Devices, AD9251 Datasheet - Page 5

• Manufacturer Part Number: AD9251
• Description: 14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9251

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AC SPECIFICATIONS
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS,
DCS disabled, unless otherwise noted.
Table 2.
Parameter
SIGNAL-TO-NOISE RATIO (SNR)
SIGNAL-TO-NOISE-AND-DISTORTION (SINAD)
EFFECTIVE NUMBER OF BITS (ENOB)
WORST SECOND OR THIRD HARMONIC
SPURIOUS-FREE DYNAMIC RANGE (SFDR)
WORST OTHER (HARMONIC OR SPUR)
TWO-TONE SFDR
CROSSTALK
ANALOG INPUT BANDWIDTH
1
2
See the
Crosstalk is measured at 100 MHz with −1.0 dBFS on one channel and no input on the alternate channel.
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
= 9.7 MHz
= 30.5 MHz
= 70 MHz
= 200 MHz
= 9.7 MHz
= 30.5 MHz
= 70 MHz
= 200 MHz
= 9.7 MHz
= 30.5 MHz
= 70 MHz
= 200 MHz
= 9.7 MHz
= 30.5 MHz
= 70 MHz
= 200 MHz
= 9.7 MHz
= 30.5 MHz
= 70 MHz
= 200 MHz
= 9.7 MHz
= 30.5 MHz
= 70 MHz
= 200 MHz
= 30.5 MHz (−7 dBFS), 32.5 MHz (−7 dBFS)
AN-835
1
2
Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions.
Temp
25°C
25°C
Full
25°C
Full
25°C
25°C
25°C
Full
25°C
Full
25°C
25°C
25°C
25°C
25°C
25°C
25°C
Full
25°C
Full
25°C
25°C
25°C
Full
25°C
Full
25°C
25°C
25°C
Full
25°C
Full
25°C
25°C
Full
25°C
Min
73.6
73.4
81
AD9251-20/AD9251-40
Rev. A | Page 5 of 36
Typ
74.7
74.4
73.7
71.5
74.6
74.3
73.6
70.0
12.0
12.0
11.9
11.3
−95
−95
−94
−80
95
94
93
80
−98
−98
−98
−95
90
−110
700
Max
−81
−90
Min
73.6
73.4
81
AD9251-65
Typ
74.5
74.3
73.7
71.5
74.4
74.2
73.6
70.0
12.0
12.0
11.9
11.3
−95
−95
−94
−80
95
94
93
80
−98
−98
−98
−95
90
−110
700
Max
−81
−90
Min
72.5
72.4
81
AD9251-80
Typ
74.3
74.1
73.6
71.5
74.1
74.0
73.5
70.0
12.0
12.0
11.9
11.3
−93
−93
−92
−80
93
93
92
80
−97
−97
−96
−95
90
−110
700
Max
−81
−89
AD9251
Unit
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
dBFS
Bits
Bits
Bits
Bits
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
MHz