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CA3020A bảng dữ liệu(PDF) 7 Page - Intersil Corporation

tên linh kiện CA3020A
Giải thích chi tiết về linh kiện  8MHz Power Amps For Military, Industrial and Commercial Equipment
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nhà sản xuất  INTERSIL [Intersil Corporation]
Trang chủ  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

CA3020A bảng dữ liệu(HTML) 7 Page - Intersil Corporation

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7
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
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:
.
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:
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
3
8
4
5
12
7
3
2
+VCC2
6
+VCC1
9
CA3020
CA3020A
SIGNAL
SOURCE
10
µF
1
µF
eIN
eOUT
50
50
50
3
8
4
2
6
7
10
3
+VCC2
5
+VCC1
9
SIGNAL
SOURCE
5
µF
0.01
eIN
510
k
31
12
µF
5
µF
3k
1kHz
CA3020
CA3020A
T
RL
eOUT
5
µF
5k
ICC1
ICC2
+
-
+
-
(NOTE)
η
100
POUT
VCC1ICC1 VCC2ICC2
+
----------------------------------------------------------------------
=
Gp 10log10
=
POUT
PIN
-----------------
where PIN in mW
()
eIN2
3000 RIN 10
() Note 4
()
+
----------------------------------------------------------------
=
CA3020, CA3020A


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