LTC1750 データシートの表示（PDF） - Linear Technology
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LTC1750 Datasheet PDF : 24 Pages
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LTC2255/LTC2254
A ALOG I PUT The ● denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at TA = 25°C. (Note 4)
SYMBOL
VIN
VIN,CM
IIN
ISENSE
IMODE
tAP
tJITTER
CMRR
PARAMETER
Analog Input Range (AIN+ –AIN–)
Analog Input Common Mode
Analog Input Leakage Current
SENSE Input Leakage
MODE Pin Leakage
Sample-and-Hold Acquisition Delay Time
Sample-and-Hold Acquisition Delay Time Jitter
Analog Input Common Mode Rejection Ratio
Full Power Bandwidth
CONDITIONS
2.85V < VDD < 3.4V (Note 7)
Differential Input (Note 7)
0V < AIN+, AIN– < VDD
0V < SENSE < 1V
Figure 8 Test Circuit
MIN TYP MAX
●
±0.5V to ±1V
● 1 1.5 1.9
● –1
1
● –3
3
● –3
3
0
0.2
80
640
UNITS
V
V
µA
µA
µA
ns
psRMS
dB
MHz
DY A IC ACCURACY The ● denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. AIN = –1dBFS. (Note 4)
SYMBOL
PARAMETER
CONDITIONS
LTC2255
LTC2254
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
71.7
dB
SFDR
Spurious Free Dynamic Range
2nd or 3rd Harmonic
5MHz Input
30MHz Input
88
88
dB
85
88
dB
70MHz Input
● 73
82
71 84
dB
140MHz Input
78
80
dB
SFDR
Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input
30MHz Input
90
90
dB
90
90
dB
70MHz Input
● 77
90
79 90
dB
140MHz Input
90
90
dB
S/(N+D)
Signal-to-Noise Plus
Distortion Ratio
5MHz Input
30MHz Input
72.2
72.4
dB
72
72.2
dB
70MHz Input
● 68
71.9
68.5 72
dB
140MHz Input
70.2
70.6
dB
IMD
Intermodulation
Distortion
fIN1 = 28.2MHz
fIN2 = 26.8MHz
85
85
dB
22554fa
3
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