AD8370ARE Datasheet, PDF (11/28 Pages) Analog Devices – LF to 750 MHz Digitally Controlled VGA

V_OPHI
V_OPLO
GND
DIFFERENTIAL V_OUT
DIFFERENTIAL V_IN
TIME (2ns/DIV)
Figure 28. DC-Coupled Large Signal Pulse Response
DIFFERENTIAL OUTPUT (50mV/DIV)
ZERO
PWUP (2V/DIV)
GAIN CODE HG127
GND
INPUT = –30dBm, 70MHz 100 AVERAGES
TIME (40ns/DIV)
Figure 29. PWUP Time Domain Response
DIFFERENTIAL OUTPUT (10mV/DIV)
ZERO
LTCH (2V/DIV)
6dB GAIN STEP (HG36 TO LG127)
GND
INPUT = –30dBm, 70MHz
NO AVERAGING
TIME (20ns/DIV)
Figure 30. Gain Step Time Domain Response
V_OUT DIFFERENTIAL
AD8370
GND
TIME (2ns/DIV)
Figure 31. Overdrive Recovery
85
80
75
70
LOW GAIN
65
HIGH GAIN
60
55
50
0
16
32
48
64
80
96 112 128
GAIN CODE
Figure 32. Supply Current vs. Gain Code
35
MEAN: 51.9
σ: 0.518
30
25
DATA FROM 136 PARTS
FROM ONE BATCH LOT
20
15
10
5
0
50
51
52
53
54
55
GAIN (V/V)
Figure 33. Distribution of Voltage Gain, HG127, 70 MHz, RL = 100 Ω
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