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BA3131

Dual operational amplifier with switch,for audio use (3 inputs ×1 output ×2)

ROHM Semiconductor 

Standard ICs

!Absolute maximum ratings (Ta=25°C)

Parameter

Symbol

Limits

Unit

Power supply voltage

VCC

18.0

V

Power dissipation

Pd

750∗

mW

Operating temperature

Topr

– 40 ~ + 85

˚C

Storage temperature

Tstg

– 55 ~ + 125

˚C

Common-mode input voltage

Vi

3 ~ VCC

V

Differential input voltage

Vid

VCC

V

Load current

IoMax.

± 50.0

mA

∗ Reduced by 7.5mW for each increase in Ta of 1˚C over 25˚C.

(When mounted on a glass epoxy board (90mm × 50mm × 1.6t))

!Recommended operating conditions (Ta=25°C)

Parameter

Operating power supply voltage

Symbol Min. Typ. Max. Unit

Conditions

VCC 6.0 8.0 16.0 V single power source

BA3131FS

!Electrical characteristics (unless otherwise noted, Ta=25°C, Vcc=8V)

Parameter

Quiescent current

Symbol Min. Typ. Max. Unit

Iq

2.0 4.9 7.8 mA

Conditions

Measurement

circuit

VIN = 0, RL = ∞ , SW pin open

Fig.2

Input offset voltage

Vio

- 0.5 5.0 mV RS ≤ 10kΩ

Fig.1

Input offset current

Input bias current

Iio

-

5 200 nA

Ib

-

50 500 nA ∗1

Fig.1

Fig.1

High-amplitude voltage gain

Avol 86 110 -

dB RL ≥ 2kΩ, VO = ± 1.5V

Fig.1

Common-mode input voltage

Vicm 3

6

-

V

Fig.1

In-phase signal rejection ratio

CMRR 60 72

-

dB RS ≤ 10kΩ

Fig.1

Power supply voltage rejection ratio PSRR 76 90

-

dB RS ≤ 10kΩ

Maximum output voltage

Input conversion noise voltage

VOH

3

6

-

V RL ≥ 10kΩ

/

VOL

3

6

-

V RL ≥ 2kΩ

Vn

-

2.0 4.0 µVrms ∗2

Fig.1

Fig.3

/

Fig.4

Fig.7

Reference voltage change

∆VREF

-

- ± 10 mV Ioref = ± 1mA

-

∗1 Because the first stage is contigured with PNP transistors, input bias current is from the IC.

∗2 Tested under the following conditions: GV = 40dB, RS = 2kΩ, Matsushita Tsuko VP-9690A (using DIN audio filter)

!Design guaranteed values (unless otherwise noted, Ta=25°C, Vcc=8V)

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Measurement

circuit

Slew rate

SR 0.5 1.2 - V / µS GV = 0dB, RL = 2kΩ

Fig.5

Gainbandwidth product

GBW 1.5 2.6 - MHz f = 10kHz

Fig.6

Crosstalk between A, B and C

CTABC 60

73

-

dB f = 1kHz

Fig.8

Total harmonic distortion

Channel separation

∗ This item is not guaranteed during processes.

THD

CS

- 0.0025 0.01 % GV = 0dB, f = 1kHz, VO = 1Vrms Fig.9

90 115 -

dB f = 1kHz, input conversion

Fig.10

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