Partlist of all semicon + OPM3401 DUAL Offset Adj AUDIOFEEL DISCRETE OP AMP

DISCRETE LOW-NOISE OPERATIONAL AMPLIFIERS

OPM3401 (DUAL) + Partlist of all semiconductor ; Low impedance

(OPA3301 + Offset adjustment)

 

Change model: OPM401 -> OPM3401

Perhaps, if you feel that the sound is insufficient, try to replace all semiconductors. You will feel the impressive sound.

(The parts list is sent to the registered e-mail to PayPal.)

FEATURES

Exciting and dynamic sound with enhanced *****

Additional offset adjustment and offset stabilization *****

Better in low impedance circuit *****

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

Dip 8 Pin Compatible with the general Op Amp

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

Do not use as a buffer amplifier (gain = 1)

 

APPLICATIONS

Hi-End Audio Pre-Amplifiers

Active-Filter

Differential Current Mode Op-Amp Circuit for Active-Filter

   (Example: Active Filter for ES9018)

Professional Audio

TECHNOLOGY APPLIED

Small Signal Buffer Amplification Circuit

Absolute Current Limit, Overcurrent 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 impedance  : 0.38 ohm

Output Current

   Internal Current Limit (1)  : ±120mA

      Allow the average current Vs = ±5V : ±90mA

      Allow the average current Vs = ±10V :  ±50mA

      Allow the average current Vs = ±15V : ±30mA

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

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

 

ABSOLUTE MAXIMUM RATINGS

Supply Voltage(VS)  . . . . . . . . . . . . . . ±18V or +36V

Input Voltage  . . . . . . . . . . . . . . . . . . . . . . . . . . . ±Vs

Differential Input Voltage  . . . . . . . . . . . . . . . . ±0.7V

Output impedance  . . . . . . . . . . . . . . . . . . 0.38 ohm

Output Current

   Internal Current Limit (1)  . . . . . . . . . . . . . ±120mA

      Allow the average current Vs = ±5V . . . . ±90mA

      Allow the average current Vs = ±10V . . . ±50mA

      Allow the average current Vs = ±15V . . . ±30mA

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

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

 

SPECIFICATIONS

Slew Rate : 34 V/uS (7V, G=x1, RL=600 Ω)

OPEN-LOOP GAIN : 68dB (VO = ±10V, RL = 600 ohm)

Gain-Bandwidth Product : 11Mhz (@ G = 1)

Output Voltage Swing (RLOAD = 600 Ω), Vrms (Vdc)

   Vs = ±5V . . . . . . . . . . . . . . . . . . . . . . . . 2.6 (±3.6V)

   Vs = ±10V . . . . . . . . . . .   . . . . . . . . . . . 6.1 (±8.6V)

   Vs = ±15V . . . . . . . . . . . . . . . . . . . . . . 9.6 (±13.7V)

Quiescent Current (2)

   Vs = ±5V . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34mA

   Vs = ±10V . . . . . . . . . . . . . . . . . . . . . . . . . . . 35mA

   Vs = ±15V . . . . . . . . . . . . . . . . . . . . . . . . . . . 36mA

Dimensions . . . . . . .  . . . 25(W) x 44(H) x 17(D) mm

Notes:

(1) +Vs and GND between or between -Vs and GND, The power supply voltage(Vs) is below ±5V, 5 seconds or less condition.

(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 OPAMP circuit, "the final gain" is equal to or less than the x10 (+ 20dB). (Active filter, buffer, etc.)

* Do not use as a buffer amplifier (gain = 1), Final Gain will use more than x1.5 (+3.5dB).

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

HOW TO CHOOSE THE OPA3401(or OPM3402) AND OPM2401(or OPM2402)

OPM3401(or OPM3402) and OPM2401(or OPM2402) are selected according to an opamp circuit impedance values.

1. OPM3401(or OPM3402): Use for the low impedance circuit

   Feedback-Resistor is less than 1000 ohm

   Headphone-Amp output circuit (only if the supply voltage is ± 5V or less)

   However, due to high Supply Current (Quiescent Current), depending on the product, you need to check it even if the Supply Voltage is reduced.

2. OPM2401(or OPM2402): Use for a high impedance circuit

   Feedback-Resistor is more than 1000 ohm

   However, the Supply Current (Quiescent Current) is low.

3. If you do not know the value of the Feedback-Resistor or uncertain, the two, it is recommended that you choose to try the actual use.

Feedback Resistor is:

Resistor connected between the Negative Input and Out in opamp circuit.