4

4.5

5

5.5

6

6.5

7

7.5

–10

–8

–6

–4

–2

0

2

4

6

8

10

Common-Mode Voltage (V)

OPA164x Family

Traditional JFET-Input Amplifier

IN–

Pre-Output Driver

OUT

IN+

V+

V–

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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.

OPA1641-Q1, OPA1642-Q1

SBOS791 – JUNE 2017

OPA164x-Q1 SoundPlus™ JFET-Input, Automotive-Grade, Audio Operational Amplifiers

1

1 Features

1

•

Qualified for Automotive Applications

•

AEC-Q100 Qualified With the Following Results:

–

Device Temperature Grade 1: –40°C to

+125°C Ambient Operating Temperature

–

Device HBM ESD Classification Level 2

–

Device CDM ESD Classification Level C6

•

Low Noise: 5.1 nV/

√Hz at 1 kHz

•

Ultra-low Distortion: 0.00005% at 1 kHz

•

High Slew Rate: 20 V/μs

•

Unity Gain Stable

•

No Phase Reversal

•

Low Quiescent Current:

1.8 mA per Channel

•

Rail-to-Rail Output

•

Wide Supply Range: ±2.25 V to ±18 V

•

Single, Dual, and Quad Versions Available

2 Applications

•

Automotive

•

HEV and EV Power Train

•

Advanced Driver Assist (ADAS)

•

Infotainment Systems

•

In-Cabin Microphones

3 Description

The OPA1641-Q1 (single) and OPA1642-Q1 (dual)

series are JFET-input, ultra-low distortion, low-noise

operational amplifiers (op amps) fully specified for

audio applications.

The

rail-to-rail

output

swing

allows

increased

headroom, making these devices ideal for use in any

audio circuit. Features include 5.1-nV/

√Hz noise, low

total

harmonic

distortion

+

noise

(THD+N)

(0.00005%), a low input bias current of 2 pA, and low

quiescent current of 1.8 mA per channel.

These devices operate over a very wide supply

voltage range of ±2.25 V to ±18 V. The OPA164x-Q1

series of operational amplifiers are unity-gain stable

and provide excellent dynamic behavior over a wide

range of load conditions.

The dual version features completely independent

circuitry for lowest crosstalk and freedom from

interactions between channels, even when overdriven

or overloaded.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

OPA1641-Q1

SOIC (8)

4.90 mm × 3.90 mm

VSSOP (8)

3.00 mm × 3.00 mm

OPA1642-Q1

SOIC (8)

4.90 mm × 3.90 mm

VSSOP (8)

3.00 mm × 3.00 mm

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

the end of the data sheet.

space

Simplified Internal Schematic

Extremely Stable Input Capacitance