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OPA1641, OPA1642, OPA1644
SBOS484D – DECEMBER 2009 – REVISED APRIL 2016
OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers
1 Features
•
•
1
3 Description
The OPA1641 (single), OPA1642 (dual), and
OPA1644 (quad) series are JFET-input, ultralow
distortion, low-noise operational amplifiers fully
specified for audio applications.
The OPA1641, OPA1642, and OPA1644 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 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 OPA1641,
OPA1642, and OPA1644 series of operational
amplifiers are unity-gain stable and provide excellent
dynamic behavior over a wide range of load
conditions.
The dual and quad versions feature completely
independent circuitry for lowest crosstalk and
freedom from interactions between channels, even
when overdriven or overloaded.
The OPA1641, OPA1642, and OPA1644
specified from –40°C to +85°C.
SoundPlus™
Device Information
(1)
PART NUMBER
OPA1641
OPA1642
OPA1644
PACKAGE
SOIC (8)
VSSOP (8)
SOIC (8)
VSSOP (8)
SOIC (14)
TSSOP (14)
BODY SIZE (NOM)
4.90 mm × 3.90 mm
3.00 mm × 3.00 mm
4.90 mm × 3.90 mm
3.00 mm × 3.00 mm
8.65 mm × 3.90 mm
5.00 mm × 4.40 mm
•
•
•
•
•
•
•
•
•
Superior Sound Quality
True JFET Input Operational Amplifier
With Low Input Bias Current
Low Noise: 5.1 nV/√Hz at 1 kHz
Ultralow 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
•
•
•
•
•
Professional Audio Equipment
Analog and Digital Mixing Consoles
Broadcast Studio Equipment
High-End A/V Receivers
High-End Blu-ray™ Players
are
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
space
Simplified Internal Schematic
V+
Extremely Stable Input Capacitance
7.5
Common-Mode Capacitance (pF)
7
Traditional JFET-Input Amplifier
6.5
6
5.5
5
4.5
4
±10
±8
±6
±4
±2
0
2
4
6
8
10
C004
OPA164x Family
Pre-Output Driver
OUT
IN-
IN+
V-
Common-Mode Voltage (V)
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.
OPA1641, OPA1642, OPA1644
SBOS484D – DECEMBER 2009 – REVISED APRIL 2016
www.ti.com
Table of Contents
1
2
3
4
5
6
Features
..................................................................
Applications
...........................................................
Description
.............................................................
Revision History.....................................................
Pin Configuration and Functions
.........................
Specifications.........................................................
6.1
6.2
6.3
6.4
6.5
6.6
Absolute Maximum Ratings .....................................
ESD Ratings ............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Typical Characteristics ..............................................
Overview .................................................................
Functional Block Diagram .......................................
Feature Description.................................................
Device Functional Modes........................................
1
1
1
2
4
6
6
6
6
6
7
9
8
Application and Implementation
........................
18
8.1 Application Information............................................
18
8.2 Typical Application .................................................
25
9 Power Supply Recommendations......................
27
10 Layout...................................................................
28
10.1 Layout Guidelines .................................................
28
10.2 Layout Example ....................................................
29
11 Device and Documentation Support
.................
30
11.1
11.2
11.3
11.4
11.5
11.6
11.7
Device Support ....................................................
Documentation Support .......................................
Related Links ........................................................
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
30
30
31
31
31
31
31
7
Detailed Description
............................................
14
7.1
7.2
7.3
7.4
14
14
15
17
12 Mechanical, Packaging, and Orderable
Information
...........................................................
31
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (December 2015) to Revision D
•
•
•
•
•
•
•
•
•
•
•
•
Page
Added TI Design ....................................................................................................................................................................
1
Changed MSOP to VSSOP throughout document ................................................................................................................
1
Changed
Supply voltage
parameter in
Recommended Operating Conditions
table to split single and dual supply
specifications into separate rows for clarity............................................................................................................................
6
Changed last column header in
Thermal Information
table from
DGK (VSSOP)
to
PW (TSSOP)
........................................
6
Changed
Noise
subsection of
Electrical Characteristics
table: changed
Input voltage noise
parameter typical
specification and changed first two
e
n
parameter typical specifications.................................................................................
7
Changed
Input Bias Current
subsection of
Electrical Characteristics
table ...........................................................................
7
Changed
V
O
parameter test conditions in
Electrical Characteristics
table ............................................................................
8
Added I
SC
parameter specifications to
Electrical Characteristics
table .................................................................................
8
Changed
Temperature Range
subsection of
Electrical Characteristics
table .......................................................................
8
Changed third paragraph of
Power Dissipation and Thermal Protection
section for clarity ................................................
23
Changed second paragraph of
Electrical Overstress
section for clarity...............................................................................
23
Added text reference for Equation 5 ....................................................................................................................................
27
Changes from Revision B (August 2010) to Revision C
•
Page
Added
Pin Configuration and Functions
section,
ESD Ratings
table,
Feature Description
section,
Device Functional
Modes, Application and Implementation
section,
Power Supply Recommendations
section,
Layout
section,
Device
and Documentation Support
section, and
Mechanical, Packaging, and Orderable Information
section ..............................
1
Added text to last bullet of
Layout Guidelines
section..........................................................................................................
28
•
Changes from Revision A (April 2010) to Revision B
•
Page
Removed product-preview information for MSOP-8 package version of OPA1641...............................................................
1
2
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
Product Folder Links:
OPA1641 OPA1642 OPA1644
OPA1641, OPA1642, OPA1644
www.ti.com
SBOS484D – DECEMBER 2009 – REVISED APRIL 2016
Changes from Original (December 2009) to Revision A
•
Page
Removed product-preview information for OPA1644 device packages throughout document..............................................
1
Copyright © 2009–2016, Texas Instruments Incorporated
Submit Documentation Feedback
3
Product Folder Links:
OPA1641 OPA1642 OPA1644
OPA1641, OPA1642, OPA1644
SBOS484D – DECEMBER 2009 – REVISED APRIL 2016
www.ti.com
5 Pin Configuration and Functions
OPA1641: D and DGK Packages
8-Pin SOIC and VSSOP
Top View
NC
(1)
1
2
3
4
8
7
6
5
NC
V+
(1)
-In
+In
V-
Out
NC
(1)
(1) NC denotes no internal connection.
Pin Functions: OPA1641
PIN
NO.
1
2
3
4
5
6
7
8
NAME
NC
–IN
+IN
V–
NC
OUT
V+
NC
I/O
—
I
I
—
—
O
—
—
No connection
Inverting input
Noninverting input
Negative (lowest) power supply
No connection
Output
Positive (highest) power supply
No connection
DESCRIPTION
OPA1642: D and DGK Packages
8-Pin SOIC and VSSOP
Top View
OUT A
-In
A
+In A
V-
1
2
3
4
A
B
8
7
6
5
V+
Out B
-In
B
+In B
Pin Functions: OPA1642
PIN
NO.
1
2
3
4
5
6
7
8
NAME
OUT A
–IN A
+IN A
V–
+IN B
–IN B
OUT B
V+
I/O
O
I
I
—
I
I
O
—
Output, channel A
Inverting input, channel A
Noninverting input, channel A
Negative (lowest) power supply
Noninverting input, channel B
Inverting input, channel B
Output, channel B
Positive (highest) power supply
DESCRIPTION
4
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
Product Folder Links:
OPA1641 OPA1642 OPA1644
OPA1641, OPA1642, OPA1644
www.ti.com
SBOS484D – DECEMBER 2009 – REVISED APRIL 2016
OPA1644: D and PW Packages
14-Pin SOIC and TSSOP
Top View
Out A
-In
A
+In A
V+
+ In B
-In
B
Out B
1
2
A
3
4
5
B
6
7
C
9
8
-In
C
Out C
D
12
11
10
+In D
V-
+ In C
14
13
Out D
-In
D
Pin Functions: OPA1644
PIN
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NAME
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
OUT C
–IN C
+IN C
V–
+IN D
–IN D
OUT D
I/O
O
I
I
—
I
I
O
O
I
I
—
I
I
O
Output, channel A
Inverting input, channel A
Noninverting input, channel A
Positive (highest) power supply
Noninverting input, channel B
Inverting input, channel B
Output, channel B
Output, channel C
Inverting input, channel C
Noninverting input, channel C
Negative (lowest) power supply
Noninverting input, channel D
Inverting input, channel D
Output, channel D
DESCRIPTION
Copyright © 2009–2016, Texas Instruments Incorporated
Submit Documentation Feedback
5
Product Folder Links:
OPA1641 OPA1642 OPA1644
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