Datasheet

LTC2172-14/
LTC2171-14/LTC2170-14
4
21721014fb
DynaMic accuracy
The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 5)
SYMBOL PARAMETER CONDITIONS
LTC2172-14 LTC2171-14 LTC2170-14
UNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX
SNR Signal-to-Noise Ratio 5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
72.0
73.7
73.7
73.5
73
71.7
73.5
73.4
73.4
72.8
71.1
72.9
72.9
72.8
72.3
dBFS
dBFS
dBFS
dBFS
SFDR Spurious Free Dynamic Range
2nd or 3rd Harmonic
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
77
90
90
89
84
80
90
90
89
84
80
90
90
89
84
dBFS
dBFS
dBFS
dBFS
Spurious Free Dynamic Range
4th Harmonic or Higher
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
85
90
90
90
90
85
90
90
90
90
85
90
90
90
90
dBFS
dBFS
dBFS
dBFS
S/(N+D) Signal-to-Noise Plus
Distortion Ratio
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
71.2
73.6
73.5
73.2
72.5
71.3
73.3
73.2
73.1
72.3
70.8
72.8
72.7
72.5
71.9
dBFS
dBFS
dBFS
dBFS
Crosstalk, Near Channel 10MHz Input (Note 12) –90 –90 –90 dBc
Crosstalk, Far Channel 10MHz Input (Note 12) –105 –105 –105 dBc
inTernal reFerence characTerisTics
The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 5)
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CM
Output Voltage I
OUT
= 0 0.5 • V
DD
– 25mV 0.5 • V
DD
0.5 • V
DD
+ 25mV V
V
CM
Output Temperature Drift ±25 ppm/°C
V
CM
Output Resistance –600µA < I
OUT
< 1mA 4 Ω
V
REF
Output Voltage I
OUT
= 0 1.225 1.250 1.275 V
V
REF
Output Temperature Drift ±25 ppm/°C
V
REF
Output Resistance –400µA < I
OUT
< 1mA 7 Ω
V
REF
Line Regulation 1.7V < V
DD
< 1.9V 0.6 mV/V