OPM306 DUAL AUDIOFEEL use for Headphone Amp POWER DISCRETE OP AMP Board

DISCRETE LOW-NOISE OPERATIONAL AMPLIFIERS 

POWER OPERATIONAL AMPLIFIERS

OPM306 (DUAL)

FEATURES

Use for Headphone Amplifier, Headphone Impedance; 16Ω ~ 600Ω or more *****

Power Operational Amplifiers *****

Enhanced the response speed of sound *****

High-Quality Audio-Grade Operational Amplifiers

Composed of High-performance Discrete Components

JFET use High Input Impedance

Excellent effect at Low Impedance Circuit as a Driving Force in afford 

   (Headphone & Earphone drivability)

Dip 8 Pin Compatible with the general Op Amps

Clean and Crisp, Rich and Non-Irritating and Relaxing Signal Output

 

APPLICATIONS

Hi-End Audios

Professional Audios

LINE OUT of the pre-amplifiers

Drive amplifiers

Power amplifiers

Headphone amplifier stage

TECHNOLOGY APPLIED

Small Signal Buffer Amplification Circuit

Absolute Current Limit, Over current Limiting Circuit

Electronic Circuits for Preventing Floating

 

ABSOLUTE MAXIMUM RATINGS

Supply Voltage(Vs):                         ±18V or +36V

Input Voltage:                                                  ±Vs

Differential Input Voltage:                             ±0.7V

Output Current

   Internal Current Limit (1):                       ±600mA

Storage Temperature Range:      -40°C to +120°C

Operating Temperature Range:     -20°C to +70°C

SPECIFICATIONS

Gain-Bandwidth Product : 7Mhz (@ G = 2)

Slew Rate : 51 V/uS (7V, G=x2, RL=100 Ω)

Open Loop Gain:                                           60dB 

   @ 1KHz, Rload = 32 Ω

   Be sure to use the gain of the amplifier is less than x10 (+20dB)

Frequency Range: 5Hz (+0.3dB) ~ 150KHz (-0.4dB) 

   @ Vs = ±10V, Output = 1Vrms, 1KHz, Rload = 32 Ω, Gain = +20dB, Input coupling capacitor = 1uF(Film)

Damping factor:                                                 37 

   @ Vs = ±10V, Output = 2Vrms, 1KHz, Rload = 16Ω, Gain = +20dB, 10W transformer, a bridge rectifier, 1A regulator, 2200uF

Output Voltage Swing (Rload = 32 Ω, THD = 0.5%)

   Vs = ±5V                                    2.2Vrms (±3.1V)

   Vs = ±10V                                  5.4Vrms (±7.6V) 

   Vs = ±15V                                8.1Vrms (±11.4V)  

Quiescent Current (2)

   Vs = ±5V                                                    80mA

   Vs = ±10V                                                  82mA

   Vs = ±15V                                                  84mA

Dimensions                 27(W) x 44(H) x 17(D) mm

Notes:

(1) Between +Vs and GND or between -Vs and GND.

(2) In the power circuit, Quiescent Current(Power Current) must be designed to be a fully supplied. 

     Should be used on circuits that can supply enough Quiescent Current(Power Current).

Use this product under the following conditions:

In Op Amp circuit, "the final gain" is equal to or less than the x10 (+20dB). (Active filter, Headphone amplifier stage, etc.)

If you are configured as a non-inverting amplifier, set the gain in +5dB (x1.78) or more. Because of the unique characteristics and power amplifiers.

Be sure to stabilize the power supply voltage by the regulator, be sure to lower the power supply impedance by the decoupling capacitor.

The length of the Extension DIP8 should be as short as possible.

Rload >= 50 ohm  @ Supply Voltage(Vs)  = ±18V or +36V

Rload >= 16 ohm  @ Supply Voltage(Vs)  = ±10V or +20V