LTC2281
3
2281fb
ANALOG INPUT The l denotes the specications which apply over the full operating temperature range, otherwise
specications are at TA = 25°C. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Analog Input Range (AIN+ –AIN–)
2.85V < VDD < 3.4V (Note 7)
±0.5V to ±1V
V
VIN,CM
Analog Input Common Mode (AIN+ +AIN–)/2
Differential Input Drive (Note 7)
Single Ended Input Drive (Note 7)
1
0.5
1.5
1.9
2
V
IIN
Analog Input Leakage Current
0V < AIN+, AIN– < VDD
–1
1
μA
ISENSE
SENSEA, SENSEB Input Leakage
0V < SENSEA, SENSEB < 1V
–3
3
μA
IMODE
MODE Input Leakage Current
0V < MODE < VDD
–3
3
μA
tAP
Sample-and-Hold Acquisition Delay Time
0
ns
tJITTER
Sample-and-Hold Acquisition Delay Time Jitter
0.2
psRMS
CMRR
Analog Input Common Mode Rejection Ratio
80
dB
Full Power Bandwidth
Figure 8 Test Circuit
640
MHz
DYNAMIC ACCURACY The l denotes the specications which apply over the full operating temperature range,
otherwise specications are at TA = 25°C. AIN = –1dBFS. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SNR
Signal-to-Noise Ratio
5MHz Input
61.6
dB
30MHz Input
61.6
dB
70MHz Input
60
61.5
dB
140MHz Input
61.4
dB
SFDR
Spurious Free Dynamic Range
2nd or 3rd Harmonic
5MHz Input
85
dB
30MHz Input
85
dB
70MHz Input
69
82
dB
140MHz Input
77
dB
SFDR
Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input
85
dB
30MHz Input
85
dB
70MHz Input
75
85
dB
140MHz Input
85
dB
S/(N+D)
Signal-to-Noise Plus Distortion Ratio
5MHz Input
61.5
dB
30MHz Input
61.5
dB
70MHz Input
60
61.4
dB
140MHz Input
61.2
dB
IMD
Intermodulation Distortion
fIN = 40MHz, 41MHz
80
dB
Crosstalk
fIN = 100MHz
–110
dB
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. (Note 4)
CONVERTER CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Gain Matching
External Reference
±0.3
%FS
Offset Matching
±2
mV
Transition Noise
SENSE = 1V
0.08
LSBRMS
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