Two comparators using opamps, configured such that it can detect voltage levels within a certain range of values rather than simply comparing wheter a voltage is above or below a certain reference
Aanalog comparator
Bregenerative comparator
Cparallel comparator
Dwindow comparator
#82
What gain is significant when an opamp is used as a voltage comparator?
Aopen loop gain
Bcommon gain
Cdifferential closed loop gain
Dclosed loop gain
#83
An opamp zero-crossing detector without hysteresis,
Auses a resistor as its feedback element
Buses a capacitor as its feedback element
Cuses an inductor as its feedback element
Dhas no feedback
#84
The feedback element of a differentiator constructed from an opamp is
Aa resistor
Ban inductor
Ca capacitor
Dan RC network
#85
An active integrator uses an opamp, what is its feedback element?
AResistor
BCapacitor
CInductor
DRC network
#86
The voltage gain of an opamp voltage follower
Aunity
BRf / Ri
C1 + Rf / Ri
Ddepends on the type of opamp
#87
What is the noise gain of opamps
Aequal to the open loop gain
BRf / Ri
C1 + Rf/Ri
Dequal to common gain
#88
The random voltage at the output of an opamp which could occupy the entire bandwidth
Anoise
Bhash
Cinterference
Dall of these
#89
Which of the ff resistor combinations that provides lesser noise in opamp circuits?
AMake both the feedback and input resistances as large as possible
BMake the feedback large, while input low
CMake the feedback small, while input large
DMake both the feedback and input resistances as small as possible
#90
Approximate the noise-gain of an inverting adder using opamps if it has five inputs
Aunity
Btwo
Cfour
Dsix
#91
Opamps with internal frequency compensation are very stable with respect to signal frequencies. However, the trade-off for frequency stability are
Alimited small-signal bandwidth
Bslow slew rate
Climited open-loop frequency response
Dall of these
#92
Opamps designed to operate at high slew rate, about 2000 V/µsec and at high frequencies, more than 50 MHz
Ageneral purpose opamps
Bhigh power opamps
Chigh stability opamps
Dhigh frequency, high slew rate opamps
#93
Generally, where does hybrid opamps found its application?
Afor high-output voltage
Bfor high-output current
Cfor high-frequency
DA and B above
#94
The magnitude of the opamps input offset voltage before it can be classified as a low-input offset voltage opamp
A0.2 mV
B2.0 mV
C2.5 mV
D5.0 mV
#95
Opamps whose internal transistor biasing can be controlled externally are categorized as
Ageneral purpose opamps
Bprogrammable opamps
Cvariable opamps
Dexternally compensated opamps
#96
What opamp parameter that can be governed by the bias control in a programmable opamp?
Aopen-loop gain and slew rate
Bunity-gain bandwidth
Cinput bias current
Dall of them
#97
The most popular opamp packages are the metal can, 8-pin dip, and the SMT. Which of these corresponds to TO-99?
Ametal can
B8-pin DIP
CSMT
Dall of them
#98
Dual in line or DIL package is designated as
ATO-99
BTO-91
CTO-116
DTO-220
#99
For high-density ICs involving many opamps, what packaging is suitable?
Ametal can
B14-pin DIL
CSMT
Dflat-pack
#100
Examples of surface-mounted technology (SMT) devices
