TS524IDT - Low-Noise Quad Op Amp | STMicroelectronics
MPN： TS524IDT ✓ 啟用中TS524IDT 概覽
An operational amplifier is a high-gain, differential analog amplifier used to amplify, buffer, filter, or control voltage signals. Quad operational amplifiers combine four amplifiers in one package, reducing board area and simplifying multi-channel designs. The TS524 belongs to the operational-amplifier hierarchy within analog and mixed-signal integrated circuits, where low input noise, low offset voltage, wide bandwidth, and high slew rate determine how faithfully small signals can be amplified.
The TS524's 4.5 nV/√Hz input-noise density is the central feature for audio and precision instrumentation. Its low-noise behavior reduces the amplifier's contribution to the total input-referred noise, helping preserve small signals in microphone, line, and measurement front ends. A 15 MHz gain-bandwidth product supports wider signal bandwidth, while the 7 V/µs slew rate enables faster output transitions than lower-bandwidth general-purpose amplifiers.
The device also offers a low maximum input offset voltage of 950 µV, which helps reduce output error when the amplifier is used with high closed-loop gain. Its output stage supports large output excursions, and its low distortion specification is 0.002%. Together, these characteristics make the TS524 suitable for balanced audio channels, active filters, line-level signal conditioning, and precision analog signal chains operating from low-noise sources.
Typical uses include four-channel audio preamplification, microphone and line-input conditioning, active crossover or equalization networks, and instrumentation requiring consistent low-noise amplification. Because all four amplifiers are integrated in one package, channel matching and board-space savings are additional practical benefits for multichannel analog designs.
Designers should verify the supply-voltage range, input common-mode range, output swing, and stability requirements in the STMicroelectronics manufacturer datasheet before finalizing the analog front end. Decoupling capacitors should be placed close to the supply pins, and sensitive input routes should be kept short to minimize board-level interference and added noise.
This page organizes the verified TS524IDT specifications, source links, application guidance, and replacement analysis into an engineering-focused reference. It also highlights the device's 4.5 nV/√Hz noise, 15 MHz bandwidth, 7 V/µs slew rate, 950 µV maximum offset voltage, and 14-pin SOIC implementation for faster component evaluation.
直接替換替代品，適用於 TS524IDT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TS524IDT （相同外形與佔位） — 差異在於 Package, Slew Rate, Amplifier Type, Mounting Type, Number of Amplifiers.
TS524IDT 最大額定值與電氣特性
| Amplifier Type | Quad operational amplifier |
| Number of Amplifiers | 4 circuits |
| Input Noise Density | 4.5 nV/√Hz |
| Maximum Input Offset Voltage | 950 µV |
| Gain-Bandwidth Product | 15 MHz |
| Slew Rate | 7 V/µs |
| Maximum Distortion | 0.002% |
| ESD Internal Protection | 2 kV |
| 供應電壓 | 18 V |
| 封裝 | 14-pin SOIC |
| Architecture | Monolithic |
| Macromodel | Included |
| Application | Audio signal amplification |
TS524IDT 14-pin soic 腳位配置指南
TS524IDT（14-pin soic 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TS524IDT.
請參閱 資料表 以查看完整腳位配置。
典型應用
TS524IDT 適用於 6 應用s: Low-Noise Audio Preamplifier, Microphone and Line-Input Conditioning, Active Equalization and Crossover Filters, Precision Instrumentation Signal Chain, Analog Sensor Interface, Test and Measurement Buffering.
Low-Noise Audio Preamplifier
The TS524IDT fits four-channel audio preamplification because each amplifier combines 4.5 nV/√Hz input-noise density with a 15 MHz gain-bandwidth product and 7 V/µs slew rate. Place the device downstream of microphone or line-level sources, then use the appropriate gain and feedback network for each channel. The low noise reduces amplifier-added hiss in quiet passages, while the high slew rate preserves large transient edges. Confirm the source impedance, common-mode range, output load, and supply limits in the manufacturer datasheet before setting the closed-loop gain.
推薦
Microphone and Line-Input Conditioning
The TS524IDT is appropriate for conditioning weak microphone or line-level signals where amplifier noise must remain low relative to the source. Its 4.5 nV/√Hz noise density and 950 µV maximum input offset voltage help minimize added signal error, while the four-amplifier configuration supports multiple balanced or unbalanced channels in one package. Use short input traces, guard routing where practical, and stable reference grounding to avoid converting PCB leakage or interference into audible noise.
推薦
Active Equalization and Crossover Filters
The TS524IDT can implement active equalization, crossover, or shelving-filter stages where several channels require similar low-noise amplification. Its 15 MHz gain-bandwidth product supports a broad operating range for audio-frequency networks, and the 7 V/µs slew rate reduces distortion risk on fast signal transitions. Each amplifier must remain stable at the selected closed-loop gain, so derive compensation and feedback values from the manufacturer guidance rather than assuming the bandwidth rating alone guarantees stability.
推薦
Precision Instrumentation Signal Chain
For instrumentation buffers and low-level analog measurement chains, the TS524IDT combines a 950 µV maximum input offset voltage with 4.5 nV/√Hz input-noise density. The offset limit helps control DC error at higher closed-loop gains, while the low noise preserves weak sensor signals. The 15 MHz gain-bandwidth product provides more headroom than a narrow-band audio stage. Check input bias current, offset drift, common-mode range, and output capability for the exact operating conditions before finalizing the circuit.
推薦
Analog Sensor Interface
The TS524IDT is suitable as a quad interface amplifier for low-noise sensor outputs when four channels can share the same supply and operating range. Its 4.5 nV/√Hz input-noise density limits amplifier-added noise, and the 7 V/µs slew rate supports higher-bandwidth sensor signals. The key design tradeoff is that low noise does not eliminate errors caused by source impedance, bias current, or offset. Review the signal amplitude, sensor impedance, grounding strategy, and filter requirements before choosing the gain and feedback network.
推薦
Test and Measurement Buffering
The TS524IDT can serve as a low-noise buffer or gain stage in test and measurement equipment where four buffered outputs share a common package. The 4.5 nV/√Hz input-noise density supports measurement of small voltages, and the 15 MHz gain-bandwidth product provides bandwidth for higher-frequency signal paths. Care is required when driving capacitive loads or operating near output limits. Confirm the output-swing and stability characteristics in the manufacturer datasheet and keep sensitive analog routing away from switching nodes and fast digital lines.
推薦
推薦產品摘要
工程參考資料，適用於 TS524IDT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TS524IN |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 14-pin SOIC | 14-pin SOIC - identical |
| Number of Amplifiers | 4 circuits | 4 circuits |
| Input Noise Density | 4.5 nV/√Hz | 4.5 nV/√Hz |
| Maximum Input Offset Voltage | 950 µV | 950 µV |
| Gain-Bandwidth Product | 15 MHz | 15 MHz |
| Slew Rate | 7 V/µs | 7 V/µs |
| Maximum Distortion | 0.002% | 0.002% |
| ESD Internal Protection | 2 kV | 2 kV |
| Supply Voltage | 18 V | 18 V |
主要差異化特點
- Four low-noise amplifiers in one 14-pin SOIC (對比TS524IN)
- Audio-focused noise and dynamic performance (對比TS524IN)
- Established same-package sourcing path (對比TS524IN)
設計說明
Route each non-inverting input directly to its source with a short, guarded trace and keep the inverting-input feedback loop compact. High-gain amplifier layouts are sensitive to parasitic capacitance and leakage, so avoid placing sensitive input nodes beneath switching nodes, noisy clocks, or inductor connections. Connect the bypass capacitors close to the supply pins and use a quiet ground-return path to reduce channel-to-channel coupling.
Do not treat the 15 MHz gain-bandwidth product as a guarantee of stability at every gain. Select the feedback topology and compensation network using the manufacturer guidance for the intended closed-loop gain, and verify capacitive-load behavior with the actual source and load. Also check input common-mode voltage, output swing, and supply limits before operating near the audio signal excursions expected in the finished circuit.
Keep the four channels close to their source and destination components so that each input trace forms a small loop. Use a continuous ground plane under the device, place supply-decoupling capacitors at the pins, and maintain separation from switching-regulator outputs and high-current power paths. If the amplifier handles microphone-level signals, pay particular attention to shield grounding, connector return paths, and chassis-versus-board grounding strategy.
Calculate amplifier dissipation from the actual output swing rather than the full supply span, especially when operating near the output range limit. The TS524 is an analog amplifier rather than a switching regulator, so its efficiency is determined mainly by quiescent current and the voltage dropped across the output stage. Use the exact supply, load, and output-voltage conditions from the manufacturer data to assess thermal margin in the enclosure.
合規資訊
The available component records do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to this general-purpose analog operational amplifier.