OPA1692 Datasheet, PDF (1/23 Pages) Texas Instruments – Low-Power, Low-Noise and Low-Distortion Audio Operational Amplifiers

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OPA1692, OPA1694
SBOS566 – JUNE 2017
™ OPA169x Low-Power, Low-Noise and Low-Distortion
Audio Operational Amplifiers
1 Features
•1 Low Noise: 4.2 nV/√Hz at 1 kHz
• Low Distortion: 0.000045% at 1 kHz
• Very Low Quiescent Current:
650 µA per Channel
• Slew Rate: 21 V/μs
• Wide Gain Bandwidth: 5.7 MHz
• Unity-Gain Stable
• Rail-to-Rail Output
• Wide Supply Range:
±1.75 V to ±18 V, or 3.5 V to 36 V
• Dual and Quad Versions Available
• Small Package Sizes:
Dual: SOIC-8, VSSOP-8, SON-8
Quad: SOIC-14 and TSSOP-14
2 Applications
• Wireless Microphones
• Wireless Audio Monitoring Systems
• Portable Radios and Headsets
• Portable Audio Effects Processors
• Portable Recording Systems
• USB Audio Peripherals
3 Description
The OPA169x operational amplifiers achieve a new
level of performance for low-power amplifiers with a
low 4.2-nV/√Hz noise density and distortion of
0.000045% at 1 kHz. These op amps offer rail-to-rail
output swing to within 150 mV of the power supplies
with a 2-kΩ load, which increases headroom and
maximizes dynamic range. These devices also have
a high output drive capability of ±50 mA.
The OPA169x operational amplifiers operate over a
very wide supply range of ±1.75 V to ±18 V, or 3.5 V
to 36 V (on only 650 µA of supply current per
channel), are unity-gain stable, and provide excellent
dynamic behavior over a wide range of load
conditions.
The OPA169x op amps are specified for a
temperature range of –40°C to +85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.91 mm
OPA1692
VSSOP (8)
3.00 mm × 3.00 mm
SON (8)
3.00 mm × 3.00 mm
OPA1694
SOIC (14)
TSSOP (14)
8.65 mm × 3.91 mm
5.00 mm × 4.40 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Preamplifier for 3-Wire Electret Microphones
Primo EM-173
Microphone
5V
C1
0.1 F
Microphone
Cable
R1
5.9 k
R3
100
R2
100 k
5V
0.1 F
OPA1692
+
C2
100 pF
±
0.1 F
-5 V
Output
C3
1F
R6 100
R4 100 k
R5 1.1 k
C4 6.8 nF
THD+N vs Frequency (3 V_RMS, 2-kΩ Load)
0.1
-60
Competitor A
Competitor B
0.01
Competitor C
-80
OPA1692
0.001
-100
0.0001
-120
Copyright © 2017, Texas Instruments Incorporated
0.00001
10
100
1k
Frequency (Hz)
-140
10k
C001
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. ADVANCE INFORMATION for pre-production products; subject to
change without notice.