TS522ID - Dual 15MHz Low-Noise Op Amp | STMicroelectronics
MPN: TS522ID ✓ ActiveTS522ID Overview
An operational amplifier is a voltage-controlled differential amplifier that uses feedback to amplify the difference between two input voltages. The dual configuration places two amplifiers in one package, allowing stereo audio, balanced signal paths, active filtering, or independent measurement channels to share a common footprint. Within the broader semiconductor hierarchy, the TS522 belongs to the operational-amplifier family, the analog amplifier category, and the signal-conditioning IC hierarchy.
The TS522 combines low input offset, low voltage noise, and high dynamic performance for audio-oriented designs. Its 850 µV maximum input offset voltage supports accurate signal amplification, while the 4.5 nV/√Hz voltage-noise density is particularly relevant when processing low-level microphone, musical-instrument, or line-level signals. A 15 MHz gain-bandwidth product provides useful bandwidth for audio and general-purpose precision applications, and the 7 V/µs slew rate improves large-signal response.
Internally, each amplifier is configured around high-gain stages with internal ESD protection. The manufacturer datasheet reports low distortion of 0.002%, macromodel inclusion, and excellent frequency stability. These characteristics make the TS522 suitable for precision audio signal chains where low noise, low distortion, and predictable frequency response matter more than very low power consumption.
Typical uses include stereo audio preamplification, active crossover filters, mixer input stages, microphone preamplifiers, audio buffer circuits, and low-level sensor-conditioning channels. Two amplifiers in the same 8-pin SOIC package can reduce board area in stereo designs, while the industrial temperature range supports industrial control, communications, and instrumentation equipment.
Designers should verify the required supply headroom, input common-mode range, output swing, noise gain, and stability for the selected feedback network. Decoupling capacitors should be placed close to the supply pins, and sensitive audio inputs should use short traces with suitable grounding to minimize parasitic pickup. A SPICE macromodel is available for circuit simulation, but board-level stability and distortion should still be verified with real components.
This page consolidates the verified TS522ID operating characteristics, sourcing links, application guidance, design cautions, and replacement information. It also distinguishes confirmed technical facts from parameters that were not present in the supplied source data, helping engineers make a defensible design decision without treating unverified values as guaranteed specifications.
Drop-in alternatives for TS522ID — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
TS522IDT
✅ Drop-In📋 Reference alternative (not in catalog)
TS522ID Maximum Ratings & Electrical Characteristics
| Number of Amplifiers | 2 amplifiers |
| Amplifier Type | Precision low-noise operational amplifier |
| Gain-Bandwidth Product | 15 MHz |
| Slew Rate | 7 V/µs |
| Voltage Noise Density | 4.5 nV/√Hz |
| Maximum Input Offset Voltage | 850 µV |
| Low Distortion | 0.002% |
| Internal ESD Protection | 2 kV |
| Supply Voltage Range | 5 V to 30 V |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-pin SOIC |
| Mounting Type | Surface mount |
| Application Category | Audio signal processing |
| Simulation Support | Macromodel included |
TS522ID 8-pin soic Pin Configuration Guide
Pin configuration for TS522ID (8-pin soic package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for TS522ID.
Refer to the datasheet for full pin configuration.
Typical Applications
TS522ID is suitable for 6 applications: Stereo Audio Preamplifier, Active Audio Crossover Filter, Microphone Preamplifier, Audio Mixer Input Stage, Low-Level Sensor Conditioning, Industrial Audio Interface.
Stereo Audio Preamplifier
The TS522ID fits stereo audio preamplification because it integrates two amplifiers with 4.5 nV/√Hz voltage-noise density and 0.002% distortion. Each channel can use the amplifier for low-level source conditioning before a volume-control or line-output stage. Its 15 MHz gain-bandwidth product supports audio-band closed-loop gains, while the 7 V/µs slew rate improves response to larger transients. According to the STMicroelectronics manufacturer datasheet, the device is dedicated mainly to audio applications. The design should still verify common-mode range, output swing, bias current, and supply headroom before fixing the gain and signal level.
Recommended
Active Audio Crossover Filter
The TS522ID can implement the two sections of a stereo active crossover when one amplifier is assigned to each channel and filter stage. The 15 MHz gain-bandwidth product provides bandwidth beyond the audible range, while 4.5 nV/√Hz noise and 0.002% distortion help preserve low-level detail through the filter. The 7 V/µs slew rate also provides useful transient margin for crossover transitions. According to the STMicroelectronics manufacturer datasheet, the device combines low offset voltage with high dynamic performance. Component tolerances, amplifier stability, and the exact output swing must be validated for the selected crossover topology.
Recommended
Microphone Preamplifier
The TS522ID is suitable for low-level microphone amplification because its 4.5 nV/√Hz voltage-noise density and 850 µV maximum input offset voltage support precision signal reproduction. One channel may amplify a microphone while the second provides buffering or another gain stage. The 15 MHz gain-bandwidth product and 7 V/µs slew rate give ample dynamic range for audio-rate signals. According to the STMicroelectronics manufacturer datasheet, the amplifier is intended primarily for audio. Input bias current, common-mode limits, noise-gain stability, and phantom-power interaction must be checked before deployment with active microphones.
Recommended
Audio Mixer Input Stage
The TS522ID can support dual audio mixer input channels where low noise and low distortion are important at the front of the signal path. Its 850 µV maximum offset voltage, 4.5 nV/√Hz voltage noise, and 0.002% distortion are directly relevant to preserving small signals from instruments, line sources, or monitoring equipment. The 15 MHz gain-bandwidth product and 7 V/µs slew rate also support audio bandwidth and transient performance. According to the STMicroelectronics manufacturer datasheet, the part is a dual precision amplifier. Headroom, input bias behavior, and stability should be verified at every gain setting.
Recommended
Low-Level Sensor Conditioning
The TS522ID can condition low-amplitude sensor signals when a design requires more precision and bandwidth than a general-purpose amplifier provides. Its 850 µV maximum input offset voltage and 4.5 nV/√Hz voltage-noise density reduce error contributions at the front end, while the 15 MHz gain-bandwidth product supports moderate-bandwidth instrumentation channels. According to the STMicroelectronics manufacturer datasheet, the amplifier offers low distortion and excellent frequency stability. The sensor output must remain inside the verified common-mode range, and the complete signal chain must account for input bias current, output swing, and the bias current of the following stage.
Recommended
Industrial Audio Interface
The TS522ID can serve in industrial audio interfaces that process small signals while operating across extended temperatures. Its -40°C to +125°C operating range and 5 V to 30 V supply capability suit equipment where operating conditions exceed typical consumer temperatures. The dual topology can handle two channels within one 8-pin SOIC package, while 4.5 nV/√Hz noise and 0.002% distortion support signal quality. According to the STMicroelectronics manufacturer datasheet, internal ESD protection is 2 kV. That protection rating does not replace enclosure, grounding, surge, or signal-interface design for industrial environments.
Recommended
Recommended Products Summary
Engineering reference data for TS522ID — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TS522IDT |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 8-pin SOIC | 8-pin SOIC |
| Number of Amplifiers | 2 amplifiers | 2 amplifiers |
Key Differentiators
- Audio-focused dual precision amplifier (vs TS522IDT)
- High dynamic performance for a low-noise amplifier (vs TS522IDT)
- Wide industrial temperature operation (vs TS522IDT)
Design Notes
Place the supply-decoupling capacitor as close as practical to the SOIC power and ground pins, and keep the input and feedback traces short. For audio inputs with millivolt-level signals, use a continuous ground reference, avoid routing near switching nodes, and keep both channels physically separate where they carry uncorrelated signals. The supplied data identifies an 8-pin SOIC package but does not provide a verified drawing that can be used to prescribe exact capacitor placement.
Do not assume that the 15 MHz gain-bandwidth product permits a 15 MHz closed-loop gain stage. The usable bandwidth depends on the selected noise gain and feedback network, and every feedback topology should be checked for stability using the manufacturer macromodel. Also verify input bias current, common-mode range, and output swing before finalizing a low-level audio or sensor-conditioning design, because those values were not available in the supplied source text.
The TS522ID's internal ESD protection is reported as 2 kV, but that figure does not guarantee immunity to external switching noise, ESD events at the connector, or industrial surge conditions. Keep high-energy switching loops away from input and feedback nodes, use proper grounding and return paths, and add protection at exposed connectors where required. Verify the complete interface with realistic cables and grounding because internal ESD structures are not a substitute for board-level protection.
Compliance Information
The supplied source snippets do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals compliance. The stated -40°C to +125°C operating range does not by itself establish AEC-Q100 qualification.