CA3020A View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
CA3020A Datasheet PDF : 9 Pages
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CA3020, CA3020A
SIGNAL
SOURCE
10µF
3
50
Ω
eIN
32
1µF
+VCC1
+VCC2
89
4
CA3020
CA3020A
7
5 6 12
50
Ω
eOUT
50
Ω
PROCEDURES:
1. Apply desired value of VCC1 and VCC2 .
2. Apply 1kHz input signal and adjust for eIN = 5mVRMS.
3. Record the resulting value of eOUT in dB (reference
value).
4. Vary input-signal frequency, keeping eIN constant at
5mV, and record frequencies above and below 1kHz at
which eOUT decreases 3dB below reference value.
5. Record bandwidth as frequency range between -3dB
points.
FIGURE 8. MEASUREMENT OF BANDWIDTH AT -3dB POINTS
+VCC1
+VCC2
+
ICC1
-
+
ICC2
-
510
kΩ
3kΩ
1kHz
SIGNAL eIN
SOURCE
5µF
5kΩ
89
4
10
31
5µF
3
0.01
µF
CA3020
CA3020A
eOUT
2 5 6 12 7
T
(NOTE)
RL
5µF
NOTE: Push-pull output transformer; load resistance (RL) should be
selected to provide indicated collector-to-collector load impedance
(RCC).
PROCEDURES:
1. Apply desired value of VCC1 and VCC2 and reduce eIN to
0V.
2. Record resulting values of ICC1 and ICC2 in mA as Zero-
Signal DC Current Drain.
3. Apply desired value of VCC1 and VCC2 and adjust eIN to
the value at which the Total Harmonic Distortion in the
output of the amplifier = 10%.
4. Record resulting value of ICC1 and ICC2 in mA as Maxi-
mum Signal DC Current Drain.
5. Determine resulting amplifier power output in watts and
record as Maximum Power Output (POUT).
6. Calculate Circuit Efficiency (η) in % as follows:
η = 100 -V----C----C-----1----I--C----C---P--1--O---+--U---V--T--C-----C-----2----I--C----C-----2-- .
where POUT is in watts, VCC1 and VCC2 are in volts,
and ICC1 and ICC2 are in amperes.
7. Record value of eIN in mVRMS required in Step 3 as
Sensitivity (eIN).
8. Calculate Transducer Power Gain (Gp) in dB as follows:
Gp = 10log10 P----P-O---I--UN-----T--
where PIN(in mW) = -3---0---0----0----+-----R-----I-e-N--I---N(--1--2-0----)--(--N----o----t-e------4---)
NOTE:
4. See Figure 10 for definition of RIN(10).
FIGURE 9. MEASUREMENTS OF ZERO-SIGNAL DC CURRENT DRAIN, MAXIMUM-SIGNAL DC CURRENT DRAIN, MAXIMUM
POWER OUTPUT, CIRCUIT EFFICIENCY, SENSITIVITY, AND TRANSDUCER POWER GAIN
7
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