Datasheet

LTC2251/LTC2250
3
22510fa
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (A
IN
+
–A
IN
–
) 2.85V < V
DD
< 3.4V (Note 7) ● ±0.5V to ±1V V
V
IN,CM
Analog Input Common Mode Differential Input (Note 7) ● 1 1.5 1.9 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 640 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)
LTC2251 LTC2250
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 61.6 61.6 dB
30MHz Input 61.6 61.6 dB
70MHz Input ● 60 61.5 60 61.5 dB
140MHz Input 61.4 61.4 dB
SFDR 5MHz Input 85 85 dB
30MHz Input 85 85 dB
70MHz Input ● 69 82 69 83 dB
140MHz Input 77 77 dB
SFDR 5MHz Input 85 85 dB
30MHz Input 85 85 dB
70MHz Input ● 75 85 75 85 dB
140MHz Input 85 85 dB
S/(N+D) 5MHz Input 61.5 61.6 dB
30MHz Input 61.5 61.6 dB
70MHz Input ● 60 61.4 60 61.5 dB
140MHz Input 61.2 61.3 dB
IMD f
IN1
= 28.2MHz, 80 80 dB
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
Intermodulation
Distortion
Spurious Free
Dynamic Range
2nd or 3rd
Harmonic
Spurious Free
Dynamic Range
4th Harmonic
or Higher