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Description
1-3
General
1.2
Description
The TI THS4082 dual high-speed operational amplifier evaluation module
(EVM) is a complete dual high-speed amplifier circuit. It consists of the TI
THS4082 dual low-noise high-speed operational amplifier IC, along with a
small number of passive parts, mounted on a small circuit board measuring
approximately 1.9 inch by 2.2 inch (Figure 1–1). The EVM uses standard SMA
miniature RF connectors for inputs and outputs and is completely assembled,
tested, and ready to use—just connect it to power, a signal source, and a load
(if desired).
Figure 1–1. THS4082 Evaluation Module
+
+VCC
C1
C2
–VCC
U1
J2
GND
R1
J3
VOUT1
SLOP239
THS4082 EVM Board
INSTRUMENTS
+
TEXAS
R2
R3
R4
R5
R6
C3
R7
C5
C4
R8
R9
R10
R1
1
R12
R13
R14
C6
R15
J5
VOUT2
J1
VIN1
J4
VIN2
Note: The EVM is shipped with the following component locations empty:
C3, C6, R2, R4, R8, R10, and R12.
Although the THS4082 EVM is shipped with components installed for
dual-channel single-ended noninverting operation, it can also be configured
for single-channel differential and/or inverting operation by moving
components. Noninverting gain is set to 2 with the installed components. The
input of each channel is terminated with a 50-
Ω
impedance to provide correct
line impedance matching. The amplifier IC outputs are routed through 50-
Ω
resistors, both to provide correct line impedance matching and to help isolate
capacitive loading on the outputs of the amplifier. Capacitive loading directly
on the output of the IC decreases the amplifier’s phase margin and can result
in peaking or oscillations.
Summary of Contents for THS4082
Page 1: ...September 2000 Mixed Signal Products User s Guide SLOU075...
Page 4: ...iv...
Page 26: ...1 20 General...
Page 31: ...THS4082 EVM Board Layouts 2 5 Reference Figure 2 3 THS4082 EVM PC Board Layout Component Side...
Page 32: ...THS4082 EVM Board Layouts 2 6 Reference Figure 2 4 THS4082 EVM PC Board Layout Back Side...