OPA1611_15 Datasheet, PDF (1/31 Pages) Texas Instruments – SoundPlus High-Performance, Bipolar-Input Audio Operational Amplifiers

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OPA1611, OPA1612
SBOS450C – JULY 2009 – REVISED AUGUST 2014
OPA161x SoundPlus™ High-Performance, Bipolar-Input Audio Operational Amplifiers
1 Features
•1 Superior Sound Quality
• Ultralow Noise: 1.1 nV/√Hz at 1 kHz
• Ultralow Distortion:
0.000015% at 1 kHz
• High Slew Rate: 27 V/μs
• Wide Bandwidth: 40 MHz (G = +1)
• High Open-Loop Gain: 130 dB
• Unity Gain Stable
• Low Quiescent Current:
3.6 mA per Channel
• Rail-to-Rail Output
• Wide Supply Range: ±2.25 V to ±18 V
• Single and Dual Versions Available
2 Applications
• Professional Audio Equipment
• Microphone Preamplifiers
• Analog and Digital Mixing Consoles
• Broadcast Studio Equipment
• Audio Test And Measurement
• High-End A/V Receivers
0.01
0.001
THD+N Ratio vs Output Amplitude
1kHz Signal
BW = 80kHz
R_SOURCE = 0W
-80
-100
3 Description
The OPA1611 (single) and OPA1612 (dual) bipolar-
input operational amplifiers achieve very low
1.1-nV/√Hz noise density with an ultralow distortion of
0.000015% at 1 kHz. The OPA1611 and OPA1612
offer rail-to-rail output swing to within 600 mV with a
2-kΩ load, which increases headroom and maximizes
dynamic range. These devices also have a high
output drive capability of ±30 mA.
These devices operate over a very wide supply range
of ±2.25 V to ±18 V, on only 3.6 mA of supply current
per channel. The OPA1611 and OPA1612 op amps
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.
Both the OPA1611 and OPA1612 are available in
SOIC-8 packages and the OPA1612 is available in
SON-8. These devices are specified from –40°C to
+85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
OPA1611
SOIC (8)
4.90 mm × 3.91 mm
OPA1612
SOIC (8)
SON (8)
4.90 mm × 3.91 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
space
space
Functional Block Diagram
V+
0.0001
G = +1, R_L = 600W
-120
G = +1, R_L = 2kW
Pre-Output Driver
OUT
0.00001
G = -1, R_L = 600W
G = -1, R_L = 2kW
-140
G = +10, R_L = 600W
IN-
0.000001
G = +10, R_L = 2kW
IN+
-160
0.01
0.1
1
10 20
Output Amplitude (V_RMS)
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.