Diodes APX4558 User Manual

DUAL CHANNEL LOW NOISE GENERAL PURPOSE

Description

The APX4558 device is a dual low noise operational
amplifier. The wide bandwidth and low noise make it very
suited to audio applications.

The device is short-circuit protected, and the internal
frequency compensation ensures stability without external
components.

OPERATIONAL AMPLIFIER

Pin Assignments

1OUT

1OUT

1IN+

1IN+

1

1

1IN-

1IN-

2

2
3

3

V

V

45

45

CC-

CC-

(Top View)

(Top View)

SO-8

SO-8

APX4558

V

V

8

8

CC+

CC+

2OUT

2OUT

7

7

2IN-

2IN-

6

6

2IN+

2IN+

Features

• Unity-Gain Bandwidth . . . 3 MHz typical

• Gain and Phase match between amplifiers

NEW PRODUCT

• Low Noise . . . 8 nV/

• Wide Common-Mode and Differential voltage ranges

• No frequency compensation required

• Low power consumption

• No latch-up

• Green mold compound (No Br, Sb) (Note 1)

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html.

typical at 1 kHz

Hz

Applications

• Audio pre amps

• RCA line out buffers

Schematic Diagram

Vcc+

Vcc+

IN-

IN-

IN+

IN+

Vcc-

Vcc-

OUT

OUT

APX4558

Document number: DS35022 Rev. 4 - 2

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January 2011

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APX4558

DUAL CHANNEL LOW NOISE GENERAL PURPOSE

OPERATIONAL AMPLIFIER

Pin Descriptions

Pin # Name Description

1 1OUT Amplifier 1 output
2 1IN- Amplifier 1 inverting input
3 1IN+ Amplifier 1 non-inverting input
4 V
5 2IN+ Amplifier 2 non-inverting input
6 2IN- Amplifier 2 inverting input
7 2OUT Amplifier 2 output
8 V

Absolute Maximum Ratings (Note 2)

Symbol Parameter Rating Unit

V

NEW PRODUCT

Notes: 2. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied.
Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

3. All voltage values, unless otherwise noted, are with respect to the midpoint between V

4. Differential voltages are at IN+ with respect to IN –.

5. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 V, whichever is less.

6. Temperature and/or supply voltages must be limited to ensure that the dissipation rating is not exceeded.

7. Maximum power dissipation is a function of T
is P

CC+

V

-18

CC-

VID Differential input voltage (Note 4) ±30 V

VI Input voltage (any input) (Note 3, 5) ±15 V

TJ Junction Temperature (Note 7) 150 °C

T

Storage Temperature -65 to 150 °C

STG

D

Negative supply pin for amplifier 1 and amplifier 2

CC-

Positive supply pin for amplifier 1 and amplifier 2.

CC+

Supply voltage (Note 3)

Duration of output short circuit to ground, one
amplifier at a time (Note 6)

(max), θ

= (TJ (max) – TA)/θJA. Operating at the absolute maximum T

J

, and T

JA

. The maximum allowable power dissipation at any allowable ambient temperature

A

of 150°C can affect reliability.

J

CC+

18

Unlimited

and V

CC–.

V

Recommended Operating Conditions

Symbol Parameter Min Max Unit

V

V

CC+
CC-

TA

Supply voltage (Note 3)

-5 -15
Operating Ambient

Temperature Range

APX4558 0 70
APX4558I -40 105

5 15

APX4558

Document number: DS35022 Rev. 4 - 2

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V

°C

January 2011

© Diodes Incorporated

APX4558

DUAL CHANNEL LOW NOISE GENERAL PURPOSE

OPERATIONAL AMPLIFIER

Electrical Characteristics (V

= ±15V, TA = 25C, unless otherwise stated)

CC±

Symbol Parameter Conditions TA Min Typ. Max Unit

AC Characteristics

VIO Input offset voltage VO = 0V

IIO Input offset current VO = 0V

IIB Input bias current VO = 0V

V

Common-mode input voltage

ICR

range

25°C ±12 ±14 V

25°C 0.5 6

Full temp 7.5

25°C 5 200

Full temp 300

25°C 150 500

Full temp 800

RL = 10kΩ 25°C ±12 ±14

NEW PRODUCT

VOM Maximum output voltage swing

AVD

Large-signal differential voltage
amplification

RL = 2kΩ

R

≥ 2kΩ

L

V

= ±10V

O

25°C ±10 ±13

Full temp ±10

25°C 20 300

Full temp 15

RIN Input resistance 25°C 0.3 5 MΩ

CMRR Common-mode rejection ratio VIN = V

PSRR Power supply rejection ratio V

= ±15V to ±9V 25°C 76 90 dB

CC±

25°C 70 90 dB

ICR(Min)

25°C 2.5 5.6

ICC Supply current both amplifiers VO = 0V, No load

TA max 2.3 5

AC Characteristics

B1 Unity-gain bandwidth 25°C 3 MHz

V

= ±10V, RL = 2kΩ,

SR Slew rate at unity gain

vn

Equivalent input noise voltage
(closed loop)

VO1/VO2 Crosstalk attenuation

Rise time

tr

overshoot

I

= 100pF

C

L

G=100, R

= 100Ω

S

F = 1kHz, BW = 1Hz
Open loop
G = 100 105
V

= 20mV, RL = 2kΩ,

I

= 100pF

C

L

R

= 1kΩ

S

f = 10kHz

25°C 1.1 1.7 V/µs

25°C 8

25°C
25°C 0.13 µs

25°C 5 %

Power and Thermal Characteristics

25°C 75 170

PD

Total power dissipation both
amplifiers

V

= 0V, No load

O

TA max 70 150

θ

θ

Notes: 8. Test condition for SO-8: Device mounted on FR-4 substrate PC board, with minimum recommended pad layout

9. Full temp is specified as 0 to 70°C for the APX4558 and -40 to 105°C for the APX48558I

Thermal Resistance Junction-to-

JA

Ambient
Thermal Resistance Junction-to-

JC

Case

SO-8 (Note 8) 130 °C/W

SO-8 Note 8) 15 °C/W

nV/

85

mV

nA

nA

V

V/mV

mA TA min 3 6.6

Hz

dB

mW TA min 90 200

APX4558

Document number: DS35022 Rev. 4 - 2

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January 2011

© Diodes Incorporated