NTE1802 Integrated Circuit Power Amplifier for Car Stereo Radio, 12W/Ch or 24W BTL Description: The NTE1802 is an integrated class–B output amplifier in a 13–Lead SIP type package. This device contains two identical amplifiers with different input stages which can be used for stereo or bridge applications. The gain of each amplifier is fixed at 20dB. A special feature of the NTE1802 is the mute/ stand–by switch. Features: D Requires Few External Components D High Output Power (With Bootstrap) D Low Offset Voltage at Output D Fixed Gain D Good Ripple Rejection D Mute/Stand–By Switch D Load Dump Protection D AC and DC Short–Circuit Safe D D D D D D D Thermally Protected Reverse Polarity Safe Capability to handle High Energy on Outputs No Switch–On/Switch–Off Pop Flexible Leads Low Thermal Resistance Identical Inputs (Inverting and Non–Inverting) Absolute Maximum Ratings: Supply Voltage, VP Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Non–Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Load Dump Protected (During 50ms, tr > 2.5ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45V AC and DC Short–Circuit Safe Voltage, VPSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Reverse Polarity, VPR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Energy Handling Capability at Output (VP = 0V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200mJ Non–Repetitive Peak Output Current, IOSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6A Repetitive Peak Output Current, IORM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A Total Power Dissipation, Ptot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25W Crystal Temperature, TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C DC Characteristics: (VP = 14.4V, TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit 6.0 14.4 18.0 V – 40 80 mA – 6.8 – V |∆V5–9| – – 100 mV Switch–On Voltage Level VON 8.5 – – V Mute Condition Vmute 3.0 – 6.4 V – * 2 mV |∆V5–9| – – 100 mV Stand–By Condition Vsb 0 – 2 V DC Current in Stand–By Condition Isb – – 100 µA Swithc–On Current Isw – 12 40 µA Supply Supply Voltage VP Quiescent Current IP DC Output Voltage VO DC Output Offset Voltage Note 1 at approximately VP/2, Note 2 Mute/Stand–by Switch Output Signal in Mute Position DC Output Offset Voltage VO VI = 1V Max, f = 20Hz to 18kHz * Value to be fixed. Note 1. The circuit is DC adjusted at VP = 6V to 18V and AC operating at VP n= 8.5V to 18V. Note 2. At 18V < VP < 30V the DC output voltage ≤ VP/2. AC Characteristics: (VP = 14.4V, RL = 4Ω, f = 1kHz, TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit THD = 0.5% 4.0 5.0 – W THD = 10% 5.5 6.0 – W THD = 10%, Note 4 6.0 7.0 – W RL = 2Ω, THD = 0.5% 7.5 8.5 – W RL = 2Ω, THD = 10% 10.0 11.0 – W RL = 2Ω, THD = 10%, Note 4 10.5 12.0 – W Stereo Applications Output Power (Note 3) PO Low Frequency Roll–Off fL –3dB, Note 5 – 45 – Hz High Frequency Roll–Off fH –1dB 20 – – kHz Closed Loop Voltage Gain GV 19 20 21 dB Supply Voltage Ripple Rejection ON RR 48 – – dB Mute 48 – – dB Stand–By 80 – – dB Note 6 Note 3. Output power is measured directly at the output pins of the IC. Note 4. With bootstrap and a 100kΩ resistor from Pin12 to the positive supply voltage (VP), value of the bootstrap capacitor is 47µF. Note 5. Frequency response externally fixed. Note 6. Ripple rejection measured at the output with a source impedance of 0Ω (maximum ripple amplitude of 2V) and a frequency between 1kHz and 10kHz. AC Characteristics (Cont’d): (VP = 14.4V, RL = 4Ω, f = 1kHz, TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit 50 60 75 kΩ RS = 0Ω, Note 7 – 50 – µV RS = 10kΩ, Note 7 – 70 100 µV Note 8 – 60 – µV RS = 10kΩ 40 – – dB – – 1 dB THD = 0.5% 15.5 17.0 – W THD = 10% 20.0 22.0 – W THD = 10%, Note 4 21.0 24.0 – W VP = 13.2V, THD = 0.5% – 13.5 – W RL = 2Ω, THD = 10% – 17.0 – W RL = 2Ω, THD = 10%, Note 4 – 19.0 – W Stereo Applications (Cont’d) Input Impedance Noise Output Voltage ON |ZI| Vno(rms) Mute Channel Separation Channel Balance α GV BTL Application Output Power Power Bandwidth PO BW THD = 0.5%, PO = 15W 20 to 15000 Hz Low Frequency Roll–Off fL –3dB, Note 5 – 25 – Hz High Frequency Roll–Off fH –1dB 20 – – kHz Closed Loop Voltage Gain GV 25 26 27 dB Supply Voltage Ripple Rejection ON RR 48 – – dB Mute 48 – – dB Stand–By 80 – – dB 25 30 38 kΩ RS = 0Ω, Note 7 – 70 – µV RS = 10kΩ, Note 7 – 100 200 µV Note 8 – 60 – µV Input Impedance Noise Output Voltage ON Mute Note 6 |ZI| Vno(rms) Note 4. With bootstrap and a 100kΩ resistor from Pin12 to the positive supply voltage (VP), value of the bootstrap capacitor is 47µF. Note 7. Noise voltage measured in a bandwidth of 20Hz to 20kHz. Note 8. Noise output voltage independent of RS (VI = 0V). Pin Connection Diagram (Front View) 13 Non–Invert Input 2 12 Supply Vltg Ripple Rejection 11 Mute/Stand–by Switch 10 VP 9 Output 2 8 Bootstrap 2 7 GND (Substrate) 6 Bootstrap 2 5 Output 1 4 Vref 3 GND (Signal) 2 Invert Input 1 Non–Invert Input 1 .961 (24.4) .185 (4.7) .128 (3.28) 1 .488 (12.4) .669 (17.0) 13 .630 (16.0) .067 (1.7) .200 (5.08) .170 (4.32)