LTC2246LX(RevB) 查看數據表（PDF） - Linear Technology
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LTC2246LX Datasheet PDF : 18 Pages
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LTC2246H
ANALOG INPUT The l 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–)
CONDITIONS
2.8V < VDD < 3.5V (Note 7)
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
Differential Input (Note 7)
Single Ended Input (Note 7)
0V < AIN+, AIN– < VDD
0V < SENSE < 1V
MIN TYP MAX
l
±0.5V to
±1V
l
1
1.5
1.9
l 0.5
1.5
2
l –10
10
l –10
10
l –10
10
0
0.2
80
UNITS
V
V
V
μA
μA
μA
ns
psRMS
dB
DYNAMIC ACCURACY The l 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
5MHz Input
12.5MHz Input
70MHz Input
74.5
dB
l 72
74.2
dB
73.4
dB
SFDR
Spurious Free Dynamic Range
2nd or 3rd Harmonic
5MHz Input
12.5MHz Input
70MHz Input
90
dB
l 74
90
dB
85
dB
SFDR
Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input
12.5MHz Input
70MHz Input
90
dB
l 78
90
dB
90
dB
S/(N+D) Signal-to-Noise Plus Distortion Ratio
5MHz Input
12.5MHz Input
70MHz Input
74.5
dB
l 71.5 74.2
dB
73.4
dB
IMD
Intermodulation Distortion
fIN1 = 4.3MHz, fIN2 = 4.6MHz
90
dB
INTERNAL REFERENCE CHARACTERISTICS TA = 25°C. (Note 4)
PARAMETER
VCM Output Voltage
VCM Output Tempco
VCM Line Regulation
VCM Output Regulation
CONDITIONS
IOUT = 0
2.8V < VDD < 3.5V
–1mA < IOUT < 1mA
MIN
1.475
TYP
1.500
±25
3
4
MAX
1.525
UNITS
V
ppm/°C
mV/V
Ω
DIGITAL INPUTS AND DIGITAL OUTPUTS The l denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)
SYMBOL PARAMETER
LOGIC INPUTS (CLK, OE, SHDN)
CONDITIONS
MIN TYP MAX UNITS
VIH
High Level Input Voltage
VDD = 3V
l
2
V
VIL
Low Level Input Voltage
IIN
Input Current
CIN
Input Capacitance
VDD = 3V
VIN = 0V to VDD
(Note 7)
l
0.8
V
l –10
10
μA
3
pF
2246hfb
3
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