LTC2140-12 Просмотр технического описания (PDF) - Linear Technology
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LTC2140-12 Datasheet PDF : 36 Pages
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LTC2142-12/
LTC2141-12/LTC2140-12
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 5)
LTC2142-12
LTC2141-12
LTC2140-12
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
SNR
Signal-to-Noise Ratio
5MHz Input
70.8
70.5
71
dBFS
30MHz Input
l TBD 70.8
TBD 70.5
TBD 71
dBFS
70MHz Input
70.7
70.4
70.9
dBFS
140MHz Input
70.5
70.2
70.7
dBFS
SFDR Spurious Free Dynamic Range 5MHz Input
89
89
89
dBFS
2nd or 3rd Harmonic
30MHz Input
l TBD 89
TBD 89
TBD 89
dBFS
70MHz Input
88
88
88
dBFS
140MHz Input
84
84
84
dBFS
Spurious Free Dynamic Range 5MHz Input
95
95
95
dBFS
4th Harmonic or Higher
30MHz Input
l TBD 95
TBD 95
TBD 95
dBFS
70MHz Input
95
95
95
dBFS
140MHz Input
95
95
95
dBFS
S/(N+D) Signal-to-Noise Plus
5MHz Input
70.7
70.4
70.9
dBFS
Distortion Ratio
30MHz Input
l TBD 70.7
TBD 70.4
TBD 70.9
dBFS
70MHz Input
70.6
70.3
70.8
dBFS
140MHz Input
70.2
69.9
70.4
dBFS
Crosstalk
10MHz Input
–110
–110
–110
dBc
INTERNAL REFERENCE CHARACTERISTICS The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCM Output Voltage
VCM Output Temperature Drift
IOUT = 0
0.5 • VDD – 25mV
0.5 • VDD
±25
0.5 • VDD + 25mV
V
ppm/°C
VCM Output Resistance
VREF Output Voltage
VREF Output Temperature Drift
VREF Output Resistance
VREF Line Regulation
–600μA < IOUT < 1mA
IOUT = 0
–400μA < IOUT < 1mA
1.7V < VDD < 1.9V
1.225
4
1.250
±25
7
0.6
1.275
Ω
V
ppm/°C
Ω
mV/V
21421012p
5
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