LTC2238C Ver la hoja de datos (PDF) - Linear Technology
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LTC2238C Datasheet PDF : 28 Pages
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LTC2238/LTC2237/LTC2236
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 Leakage
Sample-and-Hold Acquisition Delay Time
Sample-and-Hold Acquisition Delay Time Jitter
Analog Input Common Mode Rejection Ratio
Full Power Bandwidth
CONDITIONS
2.7V < VDD < 3.4V (Note 7)
Differential Input (Note 7)
Single Ended 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
● 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
LTC2238
LTC2237
LTC2236
MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNITS
SNR
Signal-to-Noise Ratio 5MHz Input
61.8
61.8
61.8
dB
12.5MHz Input
●
60 61.8
dB
20MHz Input
●
60 61.8
dB
30MHz Input
● 60 61.8
dB
70MHz Input
61.7
61.7
61.6
dB
140MHz Input
61.6
61.6
61.6
dB
SFDR
Spurious Free
5MHz Input
85
85
85
dB
Dynamic Range
12.5MHz Input
●
2nd or 3rd
Harmonic
20MHz Input
●
69 85
dB
69 85
dB
30MHz Input
● 69 85
dB
70MHz Input
85
85
85
dB
140MHz Input
80
80
80
dB
Spurious Free
5MHz Input
85
85
85
dB
Dynamic Range
12.5MHz Input
●
4th Harmonic
or Higher
20MHz Input
●
75 85
dB
75 85
dB
30MHz Input
● 74 85
dB
70MHz Input
85
85
85
dB
140MHz Input
85
85
85
dB
S/(N+D) Signal-to-Noise
5MHz Input
61.8
61.8
61.8
dB
Plus Distortion
12.5MHz Input
●
Ratio
20MHz Input
●
60 61.8
dB
60 61.6
dB
30MHz Input
● 60 61.8
dB
70MHz Input
61.7
61.6
61.6
dB
140MHz Input
61.6
61.6
61.5
dB
IMD
Intermodulation
fIN1 = 28.2MHz,
80
80
80
dB
Distortion
fIN2 = 26.8MHz
223876fa
3
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