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Texas Instruments Precision Linear Audio Amplifiers Selection Selection guides
Precision Linear
Audio Amplifiers
ti.com/audio
2017
Newest Linear Audio Products
INA1650 / INA1650-Q1* Differential Line Receivers
The highest CMRR for professional audio applications
What’s Inside?
Internal 10k resistors matched
to within 0.0013% to achieve
91dB CMRR
Low-noise FET-input buffers
reduce CMRR sensitivity to
external resistance mismatches
500kΩ input resistors matched
to 0.01% allow for smaller AC
coupling capacitors
Internal supply splitter with
500kΩ resistors matched to
0.01%. VMID(IN) pin allows
external filtering capacitor
Input EMI filters further reduce
external component count
COM pins allow input common
mode biasing with mid-supply
output. External resistor can
be attached to further increase
common-mode input impedance
Low-impedance VMID(OUT)
connects to REF and COM
pins for single-supply
applications. Also provides
convenient bias voltage for
additional circuitry
Application and Measured Performance
18 V
-18 V
C5 1 μF
±40
C7 1 μF
3
1
R2
100 kΩ
XLR Connector
R4
100 kΩ
3
2
1
XLR Connector
R3 1 MΩ
VEE 14
OUT A 13
±80
3 COM A
REF A 12
±90
4 IN- A
VMID(IN) 11
C3 10 μF
5 IN- B
VMID(OUT) 10
R6 1 MΩ
R5
100 kΩ
±70
2 IN+ A
C2 10 μF
6 COM B
REF B 9
7 IN+ B
OUT B 8
0
±60
C8 0.1 μF
1 VCC
20
Output Single-Ended
Audio Signals
INA1650
C4 10 μF
Copyright © 2016, Texas Instruments Incorporated
Amplitude (dBu)
C1 10 μF
R1
100 kΩ
2
C6 0.1 μF
Gain (dB)
Input Differential
Audio Signals
40
No Mismatch
10-ȍMismatch, XLR Pin 2
10-ȍMismatch, XLR Pin 3
±50
±100
±20
±40
±60
±80
HD2: -111.2 dBu (-133.2 dBc)
±100
HD3: -120.1 dBu (-142.1 dBc)
±120
HD4: -130.7 dBu (-152.7 dBc)
±140
10
100
1k
Frequency (Hz)
10k
±160
100k
C001
CMRR vs Frequency
(1VRMS common-mode signal)
0
5k
10k
Frequency (Hz)
15k
20k
C004
Output Spectrum
(22-dBu Output Amplitude)
INA1650 Evaluation Module
Other Applications
• Differential Line Receiver for Single-Supply Applications
• Floating Single-Ended Input Line Receiver for Ground Loop Noise Reduction
Hardware platform for evaluating the performance
of the INA1650 differential line receiver
4 www.ti.com/tool/INA1650EVM
• Floating Single-Ended Input Line Receiver With Differential Outputs
• TRS Audio Interface in Single-Supply Applications
• Differential Line Driver With Single-Ended Input
* In Development
Precision Linear Audio Amplifiers ti.com/audio
2
Texas Instruments 2017
Newest Linear Audio Amplifiers
OPA1622 and OPA1688 High-Fidelity Headphone Amplifiers
+
+
Voltage-output
Audio DAC
(one-channel)
+
VBias
+
+
+
+
Current-output
Audio DAC
(one-channel)
OPA1622 Evaluation Module
Hardware platform for evaluating the
performance of the OPA1622 audio op amp
4 www.ti.com/tool/OPA1622EVM
VBias
+
OPA1622: Pushing the boundaries of audio quality
Superior audio quality
Ideal for portable audio
Design-ease pinout
ININ+
GND
VEE
-IN
V+
+
+IN
A
–
OUT
GND
+
V–
EN
B
–
OUT
ENABLE
OUT
OUT
-IN
+IN
VEE
GND
• THD+N: -119 dB (32Ω, 142 mW)
• Excellent PSRR of –97 / –123 dB
at 20 kHz
• Voltage Noise: 2.8 nV/√Hz at 1 kHz
• Linear output current: 80 mARMS
• Low power consumption: 2.6 mA/ch
• Click/pop suppression
• Small package: 3mm x 3mm DFN
IN+
IN-
• Unique pinout improves PCB
layout and eliminates thermal
distortion effects
Audio Headphone Amplifier Portfolio
Parameters
OPA1612
OPA1688
OPA1622
3.6 mA
1.6 mA
2.6 mA
1.1 nV/√Hz
1.7 pA/√Hz
30mARMS
+55/–62 mA
40 MHz
27 V/µs
–112.2 dB
No
100 pF
3x3 mm2; DFN-8 pin
8 nV/√Hz
0.0018 pA/√Hz
43 mARMS
±75 mA
10 MHz
8 V/µs
–111 dB
No
200 pF
3x3 mm2; DFN-8 pin
2.8 nV/√Hz
0.8 pA/√Hz
80 mARMS
+145/–130 mA
32 MHz
10 V/µs
–113.9 dB
Yes
>600pF
3x3 mm2; DFN-10 pin
Power Supply Current Per Channel
Input Voltage Noise
Input Current Noise
Linear Output Current
Short Circuit Current
Gain Bandwidth Product
Slew Rate
THD+N (1kHz, 10 mW, 32Ω)
Click-Free Enable
Cap Load Drive
Package
Precision Linear Audio Amplifiers ti.com/audio
3
Texas Instruments 2017
Linear Audio Amplifier Portfolio
For The Most Discerning Audio Enthusiasts
11
OPAx604
OPAx134
8
Bipolar
OPA168x
Noise (nV/√Hz)
7
CMOS
JFET
LME49726
Q-100
Q-100
5
Automotive
OPA627
OPA164x
OPA165x
OPA167x
LME49721
4
OPA827
BUF634
LME49743
Q-100
OPA166x
LME49723
LME49725
3
LM4562
OPA1622
LME49720
OPA160x
2
LME49600
LME49724
LME49710
Q-100
OPA161x
1
10
20
30
40
50
Gain Bandwidth Product (MHz)
Note: OPA164x automotive grade is preview
100
Channels
Supply
Range (V)
Vn @ 1kHz (Typ)
(nV/√Hz)
In @ 1kHz (Typ)
(fA/√Hz)
GBW
(MHz)
Iq (Typ)
(mA)
Slew Rate
(V/μs)
Pin/Pkg
1, 2
5-36
1.1
1700
40
3.6
27
Single: SO-8, MSOP-8; Dual:
SO-8, DFN-8
1
5-36
2.1
-
50
10
18
SO-PowerPAD
2, 4
5-36
2.5
1800
35
2.6
20
Dual: SOIC-8, MSOP-8; Quad:
SOIC-14, TSSOP-14
LME49710
1
5-34
2.5
1600
55
4.8
20
SOIC, TO-99, PDIP
LME49720
2
5-34
2.5
1600
55
5
20
SOIC, TO-99, PDIP
LME49860
2
5-44
2.5
1600
55
5
20
SOIC
LM4562
2
5-34
2.7
1600
55
5
20
SOIC, TO-99, PDIP
OPA1622
2
4-36
2.8
800
32
2.6
10
DFN-10
LME49600
1
4.5-36
3
-
180
14
2000
DDPAK/TO-263
LME49723
2
5-34
3.2
700
19
3.35
8
2, 4
3-36
3.3
1000
22
1.5
17
LME49725
2
2.5-5.5
3.3
1400
40
3
15
SOIC
Dual: SO-8, MSOP-8; Quad: SO14, TSSOP-14
SOIC
LME49743
4
8-34
3.5
1600
30
2.5
12
TSSOP
OPA827
1
8-36
4
2.2
22
4.8
28
SO-8, VSSOP-8
LME49721
2
2.2-5.5
4
-
20
2.15
8.5
OPA1652/OPA1654
2, 4
4.5-36
4.5
3
18
2
10
OPA1678/9
2, 4
4.5-36
4.5
3
16
2
9
1, 2, 4
5-36
5.1
0.8
11
1.8
20
Device
OPA1611/OPA1612
LME49724
OPA1602/OPA1604
OPA1662/OPA1664
1
9-36
5.2
2.5
16
7
55
SOIC
Dual: SO-8, MSOP-8, DFN-8;
Quad: SO-14, TSSOP-14
Dual: SOIC-8, VSSOP-8; Quad:
SOIC-14, TSSOP-14
Single: SO-8; Dual: SO-8, MSOP8; Quad: SO-14, TSSOP-14
PDIP-8, SO-8
LME49726
2
2.5-5.5
6.9
750
6.25
0.7
3.7
MSOP-PowerPAD
OPA1688
OPA134/OPA2134/
OPA4134
2
4.5-36
8
1.8
10
1.6
8
1, 2, 4
5-36
8
3
8
4
20
1, 2
9-48
11
4
20
5.3
25
SO-8, DFN-8
Single: PDIP-8, SO-8; Dual:
PDIP-8, SO-8; Quad: SO-14
Single: PDIP-8, SO-8; Dual:
PDIP-8, SO-8
OPA1641/OPA1642/
OPA1644
OPA627
OPA604/OPA2604
Precision Linear Audio Amplifiers ti.com/audio
4
Texas Instruments 2017
Linear Audio Products Portfolio - Special Function
Line Receivers and Line Drivers
Audio line receiver and driver products are used in professional audio environments such as live concerts, recording and broadcasting
studios. These products are also used in other areas to keep signals clean and interference-free such as industrial and automotive data
transmission applications. By using well-matched thin film resistors and low-noise amplifiers, these products offer outstanding
common-mode rejection and excellent dynamic response.
Audio Line Receivers
Part
Input Impedance (kΩ)
Differential Commonmode
Channels
(#)
Gain
(V/V)
CMRR
(Min)
(dB)
THD+N @
1kHz(%)
Noise Floor
(RTO)(dBu)
1, 2
1
74
0.0005
-100
50
1, 2
0.5, 2
74
0.0005
-106
2
1
85
0.00039
-104.7
INA134/
INA2134
INA137/
INA2137
INA1650
Slew Rate
(Typ)
(V/μs)
Supply
Range
(V)
Iq/ch
(Typ)
(mA)
Small-Signal
Bandwidth
(Typ) (MHz)
Operating
Temperature
(°C)
25
14
8-36
2.4
3.1
-40 to 85
24
18
14
8-36
2.4
4
-40 to 85
1000
250
10
4.5-36
5.25
2.7
-40 to 125
Package
PDIP,
SOIC
PDIP,
SOIC
TSSOP
Audio Line Drivers
Part
Channels
(#)
Gain
(V/V)
THD+N @
1kHz(%)
Noise Floor
(RTO)(dBu)
Load
Capacitance
(μF)
Slew Rate
(Typ)(V/μs)
Small-Signal
Bandwidth
(Typ) (MHz)
Supply
Range (V)
Iq (Typ)
(mA)
Operating
Temperature
(°C)
Package
1
2
0.0005
-98
1
15
1.5
9-36
5.2
-55 to +125
PDIP (DRV134
only), SOIC
DRV134 / DRV135
Microphone Preamplifiers
Microphone preamplifier products offer low noise and both analog and digitally-configurable gains to accommodate a wide range of
microphone types and audio systems.
Part
Gain Range (dB)
Input Voltage Noise (Typ)
(nV/√Hz)
Power Supply
lq (Typ)
(mA)
Interface
Operating
Temperature (°C)
Package
PGA2505
9dB through 60dB, in 3dB steps
3
±5
30
Digital SPI
-40 to 85
SSOP
PGA2500
INA163
INA217
INA103
INA166
0dB, and 10dB to 65dB in 1dB steps
0 to 80dB
0 to 80dB
0 to 80dB
66dB
1.2
1
1.3
1
1.3
±5
±4.5 to ±18
±4.5 to ±18
±9 to ±25
±4.5 to ±18
30
10
10
9
10
Digital SPI
Analog
Analog
Analog
Analog
-40 to 85
-40 to 125
-40 to 125
-40 to 85
-40 to 125
SSOP
SOIC
SOIC, PDIP
SOIC, PDIP
SOIC
Volume Control
Stereo audio volume control products are used in a wide array of professional and consumer audio equipment. Internal switches are used to
select taps in a resistor network that determine the gain of the amplifier stage. Switch selections are programmed using a serial control port,
which allows connection to a wide variety of host controllers.
Channels
(#)
Power
Supply
(V)
PGA2320
2
±15
PGA2310
2
±15
2, 4
±5
Part
PGA2311/PGA4311
Gain and
Attenuation
(dB)
+31.5dB to
-95.5dB with
0.5dB steps
THD+N @
1kHz(%)
Interchannel
Crosstalk @
1 kHz (dBFS)
0.0003
-126
±0.1
1000
SOIC
0.0004
-126
±0.05
1000
0.0002
-130
±0.05
PDIP, SOIC
PDIP (PGA2311
only), SOIC
Gain Error (dB)
(Gain=31.5dB)
PGA2500
Q-100*
(10 dB-65 dB,
1 dB per step)
INA1650
1
PGA2505
(9 dB-60 dB,
3 dB per step)
2
(±6 dB Gain, 90 dB
CMRR with Rs = 0 Ω)
INAx134
1
(0 dB Gain, 90 dB
CMRR with Rs = 0 Ω)
2
DRV135
(fixed 6 dB Gain,
8 SOIC)
-40 to 85
#
DRV134
(fixed 6 dB Gain,
16 SOIC, 8 PDIP)
1
INA103
1
INA217
1
INA166
1
(1.3 nV/√Hz,
fixed 66 dB)
Line Drivers
Mic Preamplifiers
Channel
Analog Control
1
1
(1 nV/√Hz,
0 to 60 dB)
Package
Digital Control
INA163
(1 nV/√Hz,
0 to 80 dB)
Operating
Temperature
(°C)
100
1
1
(1.3 nV/√Hz,
0 to 80 dB)
Line Receivers
120
Load
Capacitance
(pF)
2
(85 dB CMRR over
temp with Rs = 20 Ω)
INAx137
Dynamic
Range
(dB)
PGA2320
2
PGA2310
2
(28.28 Vpp Swing,
–110 dB THD+N)
(27 Vpp Swing,
–108 dB THD+N)
PGAx311
(7.5 Vpp Swing,
–114 dB THD+N)
2
Q-100 Automotive
4
Volume Control
* In Development
Precision Linear Audio Amplifiers ti.com/audio
5
Texas Instruments 2017
Linear Audio Products
Linear Audio Reference Designs
Hi-Fi headphone amplifier for
voltage output audio DACs
Analog active crossover circuit
for two-way loudspeakers
Active volume control for
professional audio
High-fidelity headphone amplifier circuit
suitable for portable applications, such as
smartphones and tablets
4 ti.com/TIPD189
Analog active crossover design for two-way
loudspeakers that can be used in recording
studios or residental high-fidelity systems
4 ti.com/TIPD134
Split-supply, high-performance volume
control that attenuates a professional
line-level audio signal with minimal
distortion and noise
4 ti.com/TIPD136
Single-supply electret
microphone preamplifier
Tone stack for electric guitars
Hi-Fi headphone amplifier for
current output audio DACs
Amplifies the output of the microphone to
common analog line level voltages
4 ti.com/TIPD181
Split-supply, high-performance guitar tone
circuit that provides control of the bass,
mid, and treble frequencies for an electric
guitar signal
4 ti.com/TIPD186
Converts the differential current output of
audio DACs to a single-ended voltage
capable of driving low impedance headphones
4 ti.com/TIPD177
Continue Learning with TI Precision Labs - Op Amps
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Audio Related Videos
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9 Videos on Noise
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