Datasheet

MAX4223–MAX4228
1GHz, Low-Power, SOT23,
Current-Feedback Amplifiers with Shutdown
14 ______________________________________________________________________________________
AC Testing/Performance
AC specifications on high-speed amplifiers are usually
guaranteed without 100% production testing. Since
these high-speed devices are sensitive to external par-
asitics introduced when automatic handling equipment
is used, it is impractical to guarantee AC parameters
through volume production testing. These parasitics
are greatly reduced when using the recommended PC
board layout (like the Maxim evaluation kit).
Characterizing the part in this way more accurately rep-
resents the amplifier’s true AC performance. Some
manufacturers guarantee AC specifications without
clearly stating how this guarantee is made. The
MAX4223–MAX4228 AC specifications are derived
from worst-case design simulations combined with a
sample characterization of 100 units. The AC perfor-
mance distributions along with the worst-case simula-
tion limits are shown in Figures 5 and 6. These
distributions are repeatable provided that proper board
layout and power-supply bypassing are used (see
Layout
and Power-Supply Bypassing section).
0
10
30
20
40
50
0–600
650–700 750–800 850–900
950–1000
1050–1100 1150–1200 1250–1300 1350–1400 1450–1500
MAX4223-fig5a
-3dB BANDWIDTH (MHz)
NUMBER OF UNITS
100 UNITS
SIMULATION
LOWER LIMIT
Figure 5a. MAX4223 -3dB Bandwidth Distribution
0
10
30
20
40
50
0–60
80–100
120–140 160–180 200–220 240–260 280–300 320–340 360–380 400–420
MAX4223-fig5b
±0.1dB BANDWIDTH (MHz)
NUMBER OF UNITS
100 UNITS
SIMULATION
LOWER LIMIT
Figure 5b. MAX4223 ±0.1dB Bandwidth Distribution
0
10
30
20
40
50
0–800
825–850 875–900 925–950
975–1000
1025–1050 1075–1100 1125–1150 1175–1200 1225–1250
MAX4223-fig5c
RISING-EDGE SLEW RATE (V/µs)
NUMBER OF UNITS
100 UNITS
SIMULATION
LOWER LIMIT
Figure 5c. MAX4223 Rising-Edge Slew-Rate Distribution
0
10
30
20
40
50
0–500
525–550 575–600 625–650 675–700 725–750 775–800 825–850 875–900 925–950
MAX4223-fig5d
FALLING-EDGE SLEW RATE (V/µs)
NUMBER OF UNITS
100 UNITS
SIMULATION
LOWER LIMIT
Figure 5d. MAX4223 Falling-Edge Slew-Rate Distribution