OPA1622 Datasheet, PDF (1/36 Pages) Texas Instruments – OPA1622 SoundPlus™ High-Fidelity, Bipolar-Input, Audio Operational Amplifier

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Burr-Brown Audio
OPA1622
SBOS727A – NOVEMBER 2015 – REVISED NOVEMBER 2015
OPA1622 SoundPlus™ High-Fidelity, Bipolar-Input, Audio Operational Amplifier
1 Features
•1 High-Fidelity Sound Quality
• Ultralow Noise: 2.8 nV/√Hz at 1 kHz
• Ultralow Total Harmonic Distortion + Noise:
–119 dB THD+N (142 mW/Ch into 32 Ω/Ch)
• Wide Gain Bandwidth Product:
32 MHz (G = +1000)
• High Slew Rate: 10 V/μs
• High Capacitive-Load Drive Capability: > 600 pF
• High Open-Loop Gain: 136 dB (600-Ω Load)
• Low Quiescent Current: 2.6 mA per Channel
• Low-Power Shutdown Mode With Reduced Pop
and Click Noise: 5 μA per Channel
• Short-Circuit Protection
• Wide Supply Range: ±2 V to ±18 V
• Available in small VSON-10 µPackage
2 Applications
• High-Fidelity (HiFi) Headphone Drivers
• Professional Audio Equipment
• Analog and Digital Mixing Consoles
• Audio Test and Measurement
• High-End Blu-ray™ Players
• High-End Audio and Video (A/V) Receivers
3 Description
The OPA1622, dual, bipolar-input, SoundPlus™
audio operational amplifier achieves a very low, 2.8-
nV/√Hz noise density with an ultralow THD+N of
–119.2 dB at 1 kHz, while driving a 32-Ω load at 100-
mW output power. The OPA1622 offers extremely-
high ac PSRR and CMRR specifications that
eliminate noise from power supplies, making the
OPA1622 ideal for use in portable-audio applications.
This device also has a high output-drive capability of
+145 mA / –130 mA.
The OPA1622 operates over a very wide supply
range of ±2 V to ±18 V, on only 2.6 mA of supply
current per channel. The OPA1622 op amp is unity-
gain stable and provides excellent dynamic behavior
over a wide range of load conditions. The OPA1622
includes a shutdown mode, allowing the amplifiers to
be switched from normal operation to a standby
current that is typically less than 5 µA. This shutdown
feature is specifically designed to eliminate click and
pop noise when transitioning into or out of shutdown
mode.
The OPA1622 features a unique internal layout for
lowest crosstalk, and freedom from interactions
between channels, even when overdriven or
overloaded. This device is specified from –40°C to
+125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
OPA1622
VSON (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the package option addendum
at the end of the datasheet.
OPA1622 in a High-Fidelity Headphone Driver
Application
C1 470 pF
VDC
ROUT
VAC
VAC
ROUT
Audio DAC
R1
499
R3
499
R4
768
R2
768
-
+ _OPA1622
Headphone
Output
C2
470 pF
FFT: 1 kHz, 32-Ω Load, 50 mW
0
±20
±40
±60
±80
±100
±120
-133.6 dBc (Second Harmonic)
±140
±160
±180
0
5k
10k
15k
20k
Frequency (Hz)
C005
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.