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ADS4122 Datasheet(PDF) 6 Page - Texas Instruments

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No. de pieza ADS4122
Descripción Electrónicos  14-/12-Bit, 65/125MSPS, Ultralow-Power ADC
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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ADS4122 Datasheet(HTML) 6 Page - Texas Instruments

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ADS4122, ADS4125
ADS4142, ADS4145
SBAS520A
– FEBRUARY 2011 – REVISED MARCH 2011
www.ti.com
ELECTRICAL CHARACTERISTICS: ADS4142/ADS4145
Typical values are at +25
°C, AVDD = 1.8V, DRVDD = 1.8V, 50% clock duty cycle, –1dBFS differential analog input, 0dB gain,
and DDR LVDS interface, unless otherwise noted. Minimum and maximum values are across the full temperature range:
TMIN = –40°C to TMAX = +85°C, AVDD = 1.8V, and DRVDD = 1.8V.
ADS4142 (65MSPS)
ADS4145 (125MSPS)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
Resolution
14
14
Bits
fIN = 10MHz
73.9
73.7
dBFS
fIN = 70MHz
73.5
73.4
dBFS
SNR (signal-to-noise ratio), LVDS
fIN = 100MHz
73.2
73.1
dBFS
fIN = 170MHz
69
72.4
70
72.2
dBFS
fIN = 300MHz
70.5
71.3
dBFS
fIN = 10MHz
73.5
73.2
dBFS
fIN = 70MHz
73.3
73
dBFS
SINAD (signal-to-noise and distortion ratio),
fIN = 100MHz
73
72.6
dBFS
LVDS
fIN = 170MHz
68
72.3
69
71.8
dBFS
fIN = 300MHz
69.2
70.6
dBFS
fIN = 10MHz
87
86
dBc
fIN = 70MHz
86.5
85.5
dBc
Spurious-free dynamic range
SFDR
fIN = 100MHz
87
82
dBc
fIN = 170MHz
71
85
72.5
81.5
dBc
fIN = 300MHz
72.5
77
dBc
fIN = 10MHz
84
83
dBc
fIN = 70MHz
84
83.5
dBc
Total harmonic distortion
THD
fIN = 100MHz
84
81
dBc
fIN = 170MHz
69.5
82.5
70.5
80
dBc
fIN = 300MHz
72.5
75.5
dBc
fIN = 10MHz
88
87
dBc
fIN = 70MHz
87
85.5
dBc
Second-harmonic distortion
HD2
fIN = 100MHz
88
82
dBc
fIN = 170MHz
71
87
72.5
84
dBc
fIN = 300MHz
72.5
77
dBc
fIN = 10MHz
87
86
dBc
fIN = 70MHz
86.5
87
dBc
Third-harmonic distortion
HD3
fIN = 100MHz
87
85
dBc
fIN = 170MHz
71
85
72.5
81.5
dBc
fIN = 300MHz
85
84
dBc
fIN = 10MHz
96
95
dBc
fIN = 70MHz
95
95
dBc
Worst spur
fIN = 100MHz
94
95
dBc
(other than second and third harmonics)
fIN = 170MHz
77.5
92
78.5
91
dBc
fIN = 300MHz
87
88
dBc
Two-tone intermodulation
f1 = 100MHz, f2 = 105MHz,
IMD
88.5
87.5
dBFS
distortion
each tone at
–7dBFS
Recovery to within 1% (of final
Clock
Input overload recovery
value) for 6dB overload with
1
1
cycles
sine-wave input
For 100mVPP signal on AVDD
AC power-supply rejection ratio
PSRR
> 30
> 30
dB
supply, up to 10MHz
Effective number of bits
ENOB
fIN = 170MHz
11.5
11.3
LSBs
Differential nonlinearity
DNL
fIN = 170MHz
–0.95
±0.5
1.7
–0.95
±0.5
1.7
LSBs
Integrated nonlinearity
INL
fIN = 170MHz
±1.5
±4.5
±1.5
±4.5
LSBs
6
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© 2011, Texas Instruments Incorporated
Product Folder Link(s): ADS4122 ADS4125 ADS4142 ADS4145


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