LTC2298 查看數據表（PDF） - Linear Technology
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LTC2298 Datasheet PDF : 28 Pages
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LTC2298/LTC2297/LTC2296
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 (AIN+ +AIN–)/2
Analog Input Leakage Current
SENSEA, SENSEB Input Leakage
MODE Input Leakage Current
Sample-and-Hold Acquisition Delay Time
Sample-and-Hold Acquisition Delay Time Jitter
Analog Input Common Mode Rejection Ratio
Full Power Bandwidth
CONDITIONS
2.7V < VDD < 3.4V (Note 7)
Differential Input (Note 7)
Single Ended Input (Note 7)
0V < AIN+, AIN– < VDD
0V < SENSEA, SENSEB < 1V
0V < MODE < VDD
Figure 8 Test Circuit
MIN
TYP
MAX
●
±0.5V to ±1V
●1
1.5
1.9
● 0.5
1.5
2
● –1
1
● –3
3
● –3
3
0
0.2
80
575
UNITS
V
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
LTC2298
LTC2297
LTC2296
MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNITS
SNR
Signal-to-Noise Ratio 5MHz Input
74.3
74.4
74.5
dB
12.5MHz Input
●
72.7 74.2
dB
20MHz Input
●
72.4 74.4
dB
30MHz Input
● 72.1 74.3
dB
70MHz Input
74.3
73.9
73.4
dB
140MHz Input
73.9
73.3
73
dB
SFDR
Spurious Free
5MHz Input
90
90
90
dB
Dynamic Range
12.5MHz Input
●
2nd or 3rd
Harmonic
20MHz Input
●
76 90
dB
75 90
dB
30MHz Input
● 75 90
dB
70MHz Input
85
85
85
dB
140MHz Input
80
80
80
dB
SFDR Spurious Free
5MHz Input
90
90
90
dB
Dynamic Range
12.5MHz Input
●
4th Harmonic
or Higher
20MHz Input
●
80 90
dB
80 90
dB
30MHz Input
● 78 90
dB
70MHz Input
90
90
90
dB
140MHz Input
90
90
90
dB
S/(N+D) Signal-to-Noise
5MHz Input
74.3
74.4
74.5
dB
Plus Distortion
Ratio
12.5MHz Input
●
20MHz Input
●
72.2 74.2
dB
71.9 74.3
dB
30MHz Input
● 71.6 74.2
dB
70MHz Input
74.1
73.6
73.4
dB
140MHz Input
71.9
71.9
71.8
dB
IMD
Intermodulation
fIN = Nyquist,
90
90
90
dB
Distortion
Nyquist + 1MHz
Crosstalk
fIN = Nyquist
–110
–110
–110
dB
229876fa
3
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