NTE1115 & NTE1115A Integrated Circuit Audio Power Amplifier, 7W Description: The NTE1115 and NTE1115A are monolithic integrated circuits designed for use as low frequency class B amplifiers. These devices provide 7W power output at 16V/4Ω, 6W at 14.4V/4Ω, 2.5W at 9V/Ω, 1W at 6V/4Ω and works with a wide range of supply voltages (4V to 20V); and gives high output current (up to 2.5A), high efficiency (75% at 6W output), very low harmonic and cross–over distortion. In addition, thermal protection is provided. Absolute Maximum Ratings: Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V Output Peak Current (Non–Repetitive), IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5A Output Current (Repetitive), IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5A Power Dissipation, Ptot TA = +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W Ttab = +100°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5W Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C Thermal Resistance, Junction–to–Tab, RthJ–TAB NTE1115 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10°C/W NTE1115A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12°C/W Thermal Resistance, Junction–to–Ambient, RthJA NTE1115 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W NTE1115A (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W Note 1. Obtained with tabs soldered to printed circuit with minimized copper area. Elecrtrical Characteristics: (TA = +25°C unless otherwise specified) Parameter

Symbol

Test Conditions

Min

Typ

Max Unit

4

–

20

V

6.4

7.2

8.0

V

Supply Voltage (Pin1)

VS

Quiescent Output Voltage (Pin12)

VO

Quiescent Drain Current

Id

–

12

20

mA

Bias Current (Pin8)

Ib

–

0.4

–

µA

VS = 14.4V

Elecrtrical Characteristics (Cont’d): (TA = +25°C unless otherwise specified) Parameter

Symbol

Power Output

PO

Input Voltage

THD = 10%, RL = 4Ω, f = 1kHz

Min

Typ

–

7.0

–

W

5.5

6.0

–

W

VS = 9V

–

2.5

–

W

VS = 6V

–

1.0

–

W

–

–

22

mW

Rf = 56Ω

–

80

–

mV

Rf = 22Ω

–

35

–

mV

–

5

–

MΩ

VS = 16V VS = 14.4V

Vi(rms)

Input Sensitivity

Vi

Input Resistance (Pin8)

Ri

Frequency Response (–3dB)

B

Total Harmonic Distortion

THD

Voltage Gain (Open Loop)

GV

Voltage Gain (Closed Loop)

GV

Input Noise Voltage

eN

Input Noise Current Efficiency

PO = 6W, VS = 14.4V, RL = 4Ω, Ω f = 1kHz

VS = 14.4V, RL = 4Ω

Max Unit

C3 = 820pF

40 to 20,000

Hz

C3 = 1500pF

40 to 10,000

Hz

PO = 50mW to 3W, VS = 14.4V, RL = 4Ω, f = 1kHz

–

0.3

–

%

VS = 14.4V, RL = 4Ω, f = 1kHz

–

80

–

dB

34

37

40

dB

VS = 14.4V, Rg = 0, B (–3dB) = 20Hz to 20kHz

–

2

–

µV

iN

VS = 14.4V, B (–3dB) = 20Hz to 20kHz

–

0.1

–

nA

h

PO = 5W, VS = 14.4V, RL = 4Ω, f = 1kHz

–

70

–

%

VS = 14.4V, RL = 4Ω, fripple = 100Hz

–

38

–

dB

SVR

Pin Connection Diagram

VCC 1

12 Output

N.C. 2

11 N.C.

N.C. 3

10 GND

Bootstrap 4 Compensation 5 Feedback 6

Tab

Tab

Supply Voltage Rejection

Test Conditions

9 Substrate GND 8 Input 7 Ripple Rejection

NTE1115 .250 (6.35)

.142 (3.6) Dia 12

7

1.004 (25.5) Max .650 (16.5)

1

6

.770 (19.5) Max

.265 (6.7)

.060 (4.0) .100 (2.54) .700 (17.78)

NTE1115 Alt. .250 (6.35)

.142 (3.6) Dia 12

1.004 (25.5) Max

7

.650 (16.5) 1

6

.770 (19.5) Max

.265 (6.7)

.060 (4.0) .100 (2.54) .700 (17.78)

NTE1115A

.247 (6.27)

12

7

1

6

.677 (17.2)

.770 (19.5) Max

.260 (6.6)

.233 (5.9) Max

.100 (2.54) .700 (17.78)

.099 (2.5) Min