Pre-Output Driver

OUT

V-

V+

IN-

IN+

0.01

0.001

0.0001

0.00001

0.000001

-

-

-

-

-

80

100

120

140

160

0.01

0.1

1

10

20

Output Amplitude (V

)

RMS

1kHz Signal

BW = 80kHz

R

= 0

SOURCE

W

G = +1, R = 600W

L

G = +1, R = 2k

G = 1, R = 600

L

L

W

-

W

G = 1, R = 2k

G = +10, R = 600

G = +10, R = 2k

-

W

W

W

L

L

L

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Folder

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OPA1611, OPA1612

SBOS450C – JULY 2009 – REVISED AUGUST 2014

OPA161x SoundPlus™ High-Performance, Bipolar-Input Audio Operational Amplifiers

1 Features

3 Description

The OPA1611 (single) and OPA1612 (dual) bipolar-

1

•

Superior Sound Quality

input

operational

amplifiers

achieve

very

low

•

Ultralow Noise: 1.1 nV/

√Hz at 1 kHz

1.1-nV/

√Hz noise density with an ultralow distortion of

•

Ultralow Distortion:

0.000015% at 1 kHz. The OPA1611 and OPA1612

0.000015% at 1 kHz

offer rail-to-rail output swing to within 600 mV with a

2-k

Ω load, which increases headroom and maximizes

•

High Slew Rate: 27 V/

μs

dynamic range. These devices also have a high

•

Wide Bandwidth: 40 MHz (G = +1)

output drive capability of ±30 mA.

•

High Open-Loop Gain: 130 dB

These devices operate over a very wide supply range

•

Unity Gain Stable

of ±2.25 V to ±18 V, on only 3.6 mA of supply current

•

Low Quiescent Current:

per channel. The OPA1611 and OPA1612 op amps

3.6 mA per Channel

are unity-gain stable and provide excellent dynamic

behavior over a wide range of load conditions.

•

Rail-to-Rail Output

•

Wide Supply Range: ±2.25 V to ±18 V

The dual version features completely independent

circuitry for lowest crosstalk and freedom from

•

Single and Dual Versions Available

interactions between channels, even when overdriven

or overloaded.

2 Applications

Both the OPA1611 and OPA1612 are available in

•

Professional Audio Equipment

SOIC-8 packages and the OPA1612 is available in

•

Microphone Preamplifiers

SON-8. These devices are specified from –40°C to

•

Analog and Digital Mixing Consoles

+85°C.

•

Broadcast Studio Equipment

Device Information(1)

•

Audio Test And Measurement

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

High-End A/V Receivers

OPA1611

SOIC (8)

4.90 mm × 3.91 mm

SOIC (8)

4.90 mm × 3.91 mm

OPA1612

SON (8)

3.00 mm × 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

space

space

THD+N Ratio vs Output Amplitude

Functional Block Diagram

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.