NTE NTE7051 Datasheet

NTE7051

Integrated Circuit

1W BTL Mono Audio Amplifier

Description:

The NTE7051 is a mono output amplifier in a 8–Lead DIP style plastic package designed for use in
battery–fed portable audio applications, such as tape recorders and radios.

This device uses the Bridge–Tied–Load principle (BTL) which can deliver an output power of 1.2W
(THD = 10%) into an 8Ω load with a power supply of 6V. The load can be short–circuited at each signal
excursion.

Features:

D No External Components
D No Switch–On or Switch–Off Clicks
D Good Overall Stability
D Low Power Consumption
D No External Heatsink Required
D Short–Circuit Proof

Absolute Maximum Ratings:

Supply Voltage, V

P

Non–Repetitive Peak Output Current, I
Total Power Dissipation (TA = +25°C), P
Operating Junction Temperature, T
Storage Temperature Range, T

C

stg

OSM

tot

–65° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

18V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.15W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (VP = 6V, RL = 8Ω, f = 1kHz, TA = +25°C unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Supply Voltage Range V
Total Quiescent Current I
Voltage Gain G
Output Power P

tot

P

RL = ∞ – 4 8 mA

V

O

THD = 10% – 1.2 – W

3 6 15 V

39 40 41 dB

Electrical Characteristics (Cont’d): (VP = 6V, RL = 8Ω, f = 1kHz, TA = +25°C unless otherwise

specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Noise Output Voltage (RMS) V

no(rms)

Note 1 – 150 300 µV
Note 2 – 60 – µV

Frequency Response f

r

20 to 20k Hz
Supply Voltage Ripple Rejection SVRR Note 3 40 50 – dB
DC Output Offset Voltage (Pin5 to Pin8) ∆V

5–8

RS = 5kΩ – – 100 mV
Total Harmonic Distortion THD PO = 0.1W – 0.2 – %
Input Impedance |ZI| – 100 – kΩ
Input Bias Current I

bias

– 100 300 nA

Note 1. The unweighted RMS noise output voltage is measured at a bandwidth of 60Hz to 15kHz

with a source impedance (RS) of 5kΩ.

Note 2. The RMS noise output voltage is measured at a bandwidth of 5kHz with a source impedance

of 0Ω and a frequency of 500kHz. With a practical load (R = 8Ω, L = 200µH) the noise output
current is only 100nA.

Note 3. Ripple Rejection is measured at the output with a source impedance of 0Ω and a frequency

between 100Hz and 10kHz. The ripple voltage = 200mV (RMS value) is applied to the posi­tive supply rail.

Pin Connection Diagram

V

CC

8

Output 2

Input12

GND (Signal)

N.C.

85

14

3

4

.393 (10.0)

Max

7

N.C.

6

GND (Substrate)

5

Output 1

.256 (6.52) Max

.150

(3.81)

.300

(7.62)

.300 (7.62)

.070 (1.77) Min.100 (2.54)