LTC2234I 查看數據表（PDF） - Linear Technology
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LTC2234I Datasheet PDF : 24 Pages
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LTC2234
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
SENSE Input Leakage
MODE Pin Pull-Down Current to GND
Sample and Hold Acquisition Delay Time
Sample and Hold Acquisition Delay Time Jitter
Analog Input Common Mode Rejection Ratio
CONDITIONS
3.1V < VDD < 3.5V
Differential Input
Single Ended Input (Note 7)
0 < AIN+, AIN– < VDD
0V < SENSE < 1V
MIN TYP MAX
●
±0.5 to ±1
●1
1.6
1.9
● 0.5
1.6
2.1
● –1
1
● –1
1
10
0
0.15
80
UNITS
V
V
V
µA
µA
µA
ns
psRMS
dB
Full Power Bandwidth
Figure 8 Test Circuit
775
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
MIN TYP MAX UNITS
SNR
Signal-to-Noise Ratio
30MHz Input (1V Range)
30MHz Input (2V Range)
70MHz Input (1V Range)
70MHz Input (2V Range)
59.5
dB
● 60.4 61.2
dB
59.5
dB
61.1
dB
140MHz Input (1V Range)
140MHz Input (2V Range)
59.4
dB
61.0
dB
250MHz Input (1V Range)
250MHz Input (2V Range)
59.0
dB
60.6
dB
SFDR
Spurious Free Dynamic Range
30MHz Input (1V Range)
30MHz Input (2V Range)
70MHz Input (1V Range)
70MHz Input (2V Range)
80
dB
● 69
78
dB
80
dB
78
dB
140MHz Input (1V Range)
140MHz Input (2V Range)
78
dB
78
dB
250MHz Input (1V Range)
250MHz Input (2V Range)
78
dB
78
dB
SFDR
Spurious Free Dynamic Range
4th Harmonic or Higher
30MHz Input (1V Range)
30MHz Input (2V Range)
86
dB
86
dB
70MHz Input (1V Range)
70MHz Input (2V Range)
86
dB
86
dB
140MHz Input (1V Range)
140MHz Input (2V Range)
86
dB
86
dB
250MHz Input (1V Range)
250MHz Input (2V Range)
85
dB
85
dB
S/(N+D) Signal-to-Noise Plus
Distortion Ratio
30MHz Input (1V Range)
30MHz Input (2V Range)
70MHz Input (1V Range)
70MHz Input (2V Range)
59.5
dB
● 60.2 61.2
dB
59.5
dB
61.1
dB
IMD
Intermodulation Distortion
fIN1 = 138MHz, fIN2 = 140MHz
81
dBc
2234fa
3
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