
LTC2255/LTC2254
3
22554fa
LTC2255
LTC2254
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
SNR
Signal-to-Noise Ratio
5MHz Input
72.4
72.5
dB
30MHz Input
72.3
72.4
dB
70MHz Input
●
68.9
72.1
69.4
72.3
dB
140MHz Input
71.7
dB
SFDR
5MHz Input
88
dB
30MHz Input
85
88
dB
70MHz Input
●
73
82
71
84
dB
140MHz Input
78
80
dB
SFDR
5MHz Input
90
dB
30MHz Input
90
dB
70MHz Input
●
77
90
79
90
dB
140MHz Input
90
dB
S/(N+D)
5MHz Input
72.2
72.4
dB
30MHz Input
72
72.2
dB
70MHz Input
●
68
71.9
68.5
72
dB
140MHz Input
70.2
70.6
dB
IMD
Intermodulation
fIN1 = 28.2MHz
85
dB
Distortion
fIN2 = 26.8MHz
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
Differential Input (Note 7)
●
1
1.5
1.9
V
IIN
Analog Input Leakage Current
0V < AIN+, AIN– < VDD
●
–1
1
A
ISENSE
SENSE Input Leakage
0V < SENSE < 1V
●
–3
3
A
IMODE
MODE Pin Leakage
●
–3
3
A
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
The
● denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 4)
A ALOG I PUT
U
DY A IC ACCURACY
U
W
The
● denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. (Note 4)
Signal-to-Noise Plus
Distortion Ratio
Spurious Free Dynamic Range
4th Harmonic or Higher
Spurious Free Dynamic Range
2nd or 3rd Harmonic