Datasheet

Data Sheet AD8370
Rev. B | Page 11 of 28
0
10
20
30
40
50
CMRR (dB)
60
70
80
FREQUENCY (MHz)
10 100 1000
03692-026
HG32, HG127
LG32, LG127
Figure 28. Common-Mode Rejection Ratio vs. Frequency
0
2
4
8
10
12
NOISE SPECTRAL DENSITY (nV/ Hz)
6
210 31010 110 410 510 610
FREQUENCY (MHz)
03692-027
HG18
HG127
LG127
Figure 29. Input Referred Noise Spectral Density vs.
Frequency at Various Gains
TIME (2ns/DIV)
VOLTAGE (600mV/DIV)
GND
03692-028
DIFFERENTIAL V
IN
DIFFERENTIAL V
OUT
V
OPLO
V
OPHI
Figure 30. DC-Coupled Large Signal Pulse Response
03692-029
PWUP (2V/DIV)
TIME (40ns/DIV)
GND
ZERO
INPUT = –30dBm, 70MHz 100 AVERAGES
GAIN CODE HG127
DIFFERENTIAL OUTPUT (50mV/DIV)
Figure 31. PWUP Time Domain Response
03692-030
LTCH (2V/DIV)
TIME (20ns/DIV)
GND
ZERO
INPUT = –30dBm, 70MHz
NO AVERAGING
6dB GAIN STEP (HG36 TO LG127)
DIFFERENTIAL OUTPUT (10mV/DIV)
Figure 32. Gain Step Time Domain Response
TIME (2ns/DIV)
VOLTAGE (1V/DIV)
03692-031
GND
V
OUT
DIFFERENTIAL
Figure 33. Overdrive Recovery