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CA3020A bảng dữ liệu(PDF) 7 Page - Intersil Corporation |
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CA3020A bảng dữ liệu(HTML) 7 Page - Intersil Corporation |
7 / 9 page 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 Ω 50 Ω 50 Ω 3 8 4 2 6 7 10 3 +VCC2 5 +VCC1 9 SIGNAL SOURCE 5 µF 0.01 eIN 510 k Ω 31 12 µF 5 µF 3k Ω 1kHz CA3020 CA3020A T RL eOUT 5 µF 5k Ω ICC1 ICC2 + - + - (NOTE) η 100 POUT VCC1ICC1 VCC2ICC2 + ---------------------------------------------------------------------- = Gp 10log10 = POUT PIN ----------------- where PIN in mW () eIN2 3000 RIN 10 () Note 4 () + ---------------------------------------------------------------- = CA3020, CA3020A |
Số phần tương tự - CA3020A |
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Mô tả tương tự - CA3020A |
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