Datasheet

4
22654314fb
LTC2265-14/
LTC2264-14/LTC2263-14
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)
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
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ENCODE INPUTS (ENC
+
, ENC
–
)
Differential Encode Mode (ENC
–
Not Tied to GND)
V
ID
Differential Input Voltage (Note 8)
l
0.2 V
V
ICM
Common Mode Input Voltage Internally Set
Externally Set (Note 8)
l
1.1
1.2
1.6
V
V
V
IN
Input Voltage Range ENC
+
, ENC
–
to GND
l
0.2 3.6 V
R
IN
Input Resistance (See Figure 10) 10 kΩ
C
IN
Input Capacitance 3.5 pF
SYMBOL PARAMETER CONDITIONS
LTC2265-14 LTC2264-14 LTC2263-14
UNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX
SNR Signal-to-Noise Ratio 5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
72.3
73.7
73.7
73.5
73
72
73.5
73.4
73.4
72.8
71.4
72.9
72.9
72.8
72.3
dBFS
dBFS
dBFS
dBFS
SFDR Spurious Free Dynamic Range
2
nd
or 3
rd
Harmonic
5MHz Input
30MHz Input
70MHz Input
140MHz Input
l
78
90
90
89
84
79
90
90
89
84
79
90
90
89
84
dBFS
dBFS
dBFS
dBFS
Spurious Free Dynamic Range
4
th
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
71.5
73.6
73.5
73.2
72.5
71.6
73.3
73.2
73.1
72.3
70.9
72.8
72.7
72.5
71.9
dBFS
dBFS
dBFS
dBFS
Crosstalk 10MHz Input –105 –105 –105 dBc
DIGITAL INPUTS AND OUTPUTS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)