NTE1294 查看數據表（PDF） - NTE Electronics

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NTE1294

Integrated Circuit Audio Power Amplifier, 1.2W

NTE Electronics 

Electrical Characteristics (Cont’d): (VS = 9V, TA = +25°C unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Output Power

Input Sensitivity

Po d = 10%,

Vs = 12V, RL = 8Ω –

2

–W

f = 1kHz,

Rf = 120Ω

Vs = 9V, RL = 4Ω

– 1.6 – W

Vs = 9V, RL = 8Ω 0.9 1.2 – W

Vs = 6V, RL = 4Ω – 0.75 – W

Vs = 3.5V, RL = 4Ω – 0.25 – W

Vs = 3V, RL = 4Ω – 0.20 – W

Vi(rms) Po = 1.2W,

RL = 8Ω,

f = 1kHz

Rf = 33Ω

Rf = 120Ω

– 16 – mV

– 60 – mV

Po = 50mW, Rf = 33Ω

RL = 8Ω,

f = 1kHz

Rf = 120Ω

– 3.5 – mV

– 12 – mV

Input Resistance (Pin3)

Frequency Response (–3dB)

Distortion

Ri f = 1kHz

B RL = 8Ω,

CB = 680pF

C5 = 1000µF,

Rf = 120Ω

CB = 220pF

d Po = 500mW, Rf = 33Ω

RL = 8Ω,

f = 1kHz

Rf = 120Ω

– 5 – MΩ

25 to 7000

Hz

25 to 20000 Hz

– 0.8 – %

– 0.4 – %

Voltage Gain (Open Loop)

Voltage Gain (Closed Loop)

Input Noise Voltage

Input Noise Current

Signal to Noise Ratio

Gv

Gv

eN

iN

S+N

N

f = 1kHz, RL = 8Ω

RL = 8Ω,

f = 1kHz

Rf = 33Ω

Rf = 120Ω

Note 1

Note 1

Po = 1.2W,

RL = 8Ω,

Gv = 34dB,

Note 1

R1 = 10kΩ

R1 = 50kΩ

– 75 – dB

– 45 – dB

– 34 – dB

– 3 – µV

– 0.4 – nA

– 80 – dB

– 70 – dB

Supply Voltage Rejection

SVR RL = 8Ω, fripple = 100Hz,

C6 = 47µF, Rf = 120Ω

– 42 – dB

Note 1. B = 22Hz to 22kHz

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