Datasheet

LT1818/LT1819
12
18189fb
TYPICAL APPLICATION
Single Supply Differential ADC Driver
–
+
1/2 LT1819
V
IN
18189 TA05
18pF
51.1Ω
5V
5V
A
IN
+
LTC1744
14 BITS
50Msps
(SET FOR 2V
P-P
FULL SCALE)
A
IN
–
+
–
18pF
51.1Ω
4.99k
0.1μF
18pF
10μF
4.99k
5V
1/2 LT1819
536Ω
536Ω
Results Obtained with the Circuit of Figure 2 at 5MHz.
FFT Shows 81dB Overall Spurious Free Dynamic Range
AMPLITUDE (dBc)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
f
IN
= 5.023193MHz
f
S
= 50Msps
V
IN
= 750mV
P-P
8192 SAMPLES
NO WINDOWING
NO AVERAGING
FREQUENCY (Hz)
0
18189 TA06
5M 10M 15M 20M 25M