Datasheet

LTC2249
3
2249fa
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)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SNR Signal-to-Noise Ratio 5MHz Input 73 dB
40MHz Input ● 70.8 73 dB
70MHz Input 73 dB
140MHz Input 72.6 dB
SFDR Spurious Free Dynamic Range 5MHz Input 90 dB
2nd or 3rd Harmonic
40MHz Input
● 75 90 dB
70MHz Input 90 dB
140MHz Input 85 dB
SFDR Spurious Free Dynamic Range 5MHz Input 95 dB
4th Harmonic or Higher
40MHz Input
● 81 95 dB
70MHz Input 95 dB
140MHz Input 90 dB
S/(N+D) Signal-to-Noise Plus Distortion Ratio 5MHz Input 72.9 dB
40MHz Input ● 70.2 72.8 dB
70MHz Input 72.8 dB
140MHz Input 72.1 dB
I
MD
Intermodulation Distortion f
IN1
= 28.2MHz, f
IN2
= 26.8MHz 90 dB
Full Power Bandwidth Figure 8 Test Circuit 575 MHz
DY A IC ACCURACY
U
W
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CM
Output Voltage I
OUT
= 0 1.475 1.500 1.525 V
V
CM
Output Tempco ±25 ppm/°C
V
CM
Line Regulation 2.7V < V
DD
< 3.4V 3 mV/V
V
CM
Output Resistance –1mA < I
OUT
< 1mA 4 Ω
I TER AL REFERE CE CHARACTERISTICS
UU U
(Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (A
IN
+
– A
IN
–
) 2.7V < V
DD
< 3.4V (Note 7) ● ±0.5 to ±1V
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
A ALOG I PUT
UU
The ● denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)