Evaluation Schematic
1-2
1.1
Evaluation Schematic
As delivered, the EVM has a fully functional example circuit—just add power
supplies, a signal source, and monitoring instrument. See Figure 1-1 for a
complete schematic diagram. EVM features include:
-
Wide operating supply voltage range:
±
5 V to
±
15 V operation (see the
device data sheet)
-
Inverting and noninverting gain configurations supported
-
Single supply capability—R5 through R7 to provide internal or external
reference to the noninverting input
-
Z1 through Z3 for ac coupling
-
Nominal 50-
Ω
input impedance (R2 or R1). Termination can be configured
according to the application requirement.
-
1-k
Ω
load resistor R8. 1-k
Ω
is the standard data sheet load impedance.
-
Footprints for a series resistor (Z3) or an A/D compensation network (Z3
and Z9)
-
T-network in the feedback path can also be used to implement
transimpedance networks
-
Power supply ripple rejection capacitors (C3 and C6)
-
Decoupling capacitors (C4, C5, C7, C8, C9, C10)
-
Test point for connection of a high impedance scope probe to op amp
output (TP3)
-
Convenient GND test points (TP1 and TP2)
-
PowerPAD heatsinking capability
-
A good example of high-speed amplifier PCB design and layout