Datasheet

LTC2248/LTC2247/LTC2246
3
224876fa
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (A
IN
+
– A
IN
–
) 2.7V < V
DD
< 3.4V (Note 7) ● ±0.5V to ±1V V
V
IN,CM
Analog Input Common Mode (A
IN
+
+ A
IN
–
)/2 Differential Input (Note 7) ● 1 1.5 1.9 V
Single Ended Input (Note 7)
● 0.5 1.5 2 V
I
IN
Analog Input Leakage Current 0V < A
IN
+
, A
IN
–
< V
DD
● –1 1 µA
I
SENSE
SENSE Input Leakage 0V < SENSE < 1V ● –3 3 µA
I
MODE
MODE Pin Leakage ● –3 3 µA
t
AP
Sample-and-Hold Acquisition Delay Time 0 ns
t
JITTER
Sample-and-Hold Acquisition Delay Time Jitter 0.2 ps
RMS
CMRR Analog Input Common Mode Rejection Ratio 80 dB
Full Power Bandwidth Figure 8 Test Circuit 575 MHz
The ● denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Note 4)
LTC2248 LTC2247 LTC2246
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 74.3 74.4 74.5 dB
12.5MHz Input ● 72.9 74.2 dB
20MHz Input ● 72.9 74.4 dB
30MHz Input ● 72.5 74.3 dB
70MHz Input 74.3 73.9 73.4 dB
140MHz Input 73.9 73.3 73 dB
SFDR 5MHz Input 90 90 90 dB
12.5MHz Input ● 76 90 dB
20MHz Input ● 76 90 dB
30MHz Input ● 76 90 dB
70MHz Input 85 85 85 dB
140MHz Input 80 80 80 dB
SFDR 5MHz Input 95 95 95 dB
12.5MHz Input ● 84 95 dB
20MHz Input ● 84 95 dB
30MHz Input ● 84 95 dB
70MHz Input 95 95 95 dB
140MHz Input 90 90 90 dB
S/(N+D) 5MHz Input 74.3 74.4 74.5 dB
12.5MHz Input ● 72.2 74.2 dB
20MHz Input ● 72.2 74.3 dB
30MHz Input ● 72 74.2 dB
70MHz Input 74.1 73.6 73.4 dB
140MHz Input 71.9 71.9 71.8 dB
I
MD
Intermodulation f
IN1
= 28.2MHz 90 90 90 dB
Distortion f
IN2
= 26.8MHz
A ALOG I PUT
UU
DY A IC ACCURACY
U
W
The ● denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)
Signal-to-Noise
Plus Distortion
Ratio
Spurious Free
Dynamic Range
4th Harmonic
or Higher
Spurious Free
Dynamic Range
2nd or 3rd
Harmonic