TS971ID - 12MHz Low-Noise Rail-to-Rail Op Amp | STMicroelectronics
N.º da peça: TS971ID ✓ AtivoTS971ID Visão geral
An operational amplifier is an analog integrated circuit that amplifies the difference between two input voltages. The TS971ID belongs to the operational-amplifier hierarchy within analog and mixed-signal ICs. Rail-to-rail output means the output can swing close to either supply rail, improving usable output range in low-voltage systems. The single-amplifier configuration also keeps the package compact for cost-sensitive designs requiring one precision analog channel.
The principal performance features include 12 MHz gain bandwidth and a 4 V/µs slew rate, allowing the amplifier to process relatively fast signals without excessive settling limitations. Input-noise density is specified at 4 nV/√Hz, and the listed distortion is 0.003%. According to the STMicroelectronics product family information, TS97x devices can operate with supply voltages as low as ±1.35 V and are intended for portable and battery-powered equipment.
The TS971ID combines rail-to-rail output operation with low-noise and low-distortion behavior. ESD protection is listed at 2 kV, while latch-up immunity is identified as Class A. These characteristics are particularly useful when a circuit must preserve small-signal information while operating from a constrained supply. The amplifier's 2.7 V to 10 V operating range supports conventional 3.3 V, 5 V, and up-to-10 V system rails.
Typical uses include microphone and line-level audio preamplification, portable measurement equipment, low-level sensor interfaces, active filters, and buffered sensor outputs. In an audio preamplifier, the 4 nV/√Hz noise density helps limit the amplifier's contribution to the system noise floor. In instrumentation, the 12 MHz bandwidth provides useful signal range, while the 0.003% distortion specification supports high-fidelity signal paths.
When designing a TS971ID circuit, verify the input and output common-mode limits, operating-voltage range, output-current capability, and stability requirements against the manufacturer datasheet. Place input, output, and compensation-network components close to the device, and use a suitable output-load arrangement. Because the verified search results do not provide a public price or a complete manufacturer pin table, those details are not inferred here.
Alternativas drop-in para TS971ID — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
TS971IYDT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TS971LT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TS971ID Classificações máximas e características elétricas
| Amplifier Type | Single operational amplifier |
| Number of Amplifiers | 1 circuit |
| Gain-Bandwidth Product | 12 MHz |
| Slew Rate | 4 V/µs |
| Input Noise Density | 4 nV/√Hz |
| Distortion | 0.003% |
| Supply Voltage Range | 2.7 V to 10 V |
| Minimum Total Supply Voltage | ±1.35 V |
| Output Swing | Rail-to-rail |
| Tipo de saída | Rail-to-rail |
| ESD Protection | 2 kV |
| Latch-Up Immunity | Class A |
| Encapsulamento | 8-pin SOIC |
| Tipo de montagem | Surface mount |
| Typical Application | Portable and battery-supplied equipment |
Guia de Configuração de Pinos do TS971ID 8-pin soic
Configuração de pinos para TS971ID (pacote 8-pin soic). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para TS971ID.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
TS971ID é adequado para 6 aplicaçãos: Portable Audio Preamplifier, Portable Sensor Signal Conditioning, Low-Noise Active Filter, Battery-Powered Measurement Front End, Industrial Instrumentation Signal Buffer, General-Purpose Rail-to-Rail Interface.
Portable Audio Preamplifier
The TS971ID fits portable audio preamplification because its 4 nV/√Hz input-noise density helps preserve small signals and its 0.003% distortion supports low-distortion amplification. Operating from 2.7 V to 10 V permits use with compact battery-derived rails, while the rail-to-rail output maximizes the available swing in a low-voltage design. Place the amplifier in a feedback topology around the intended gain and verify the output range across the complete signal excursion. Decoupling close to the supply pins and a short, quiet input path help prevent board noise from masking the amplifier's low-noise performance.
Portable Sensor Signal Conditioning
The TS971ID is suitable for conditioning outputs from low-level sensors in portable instrumentation because it combines a 12 MHz gain-bandwidth product with a 4 V/µs slew rate. These characteristics allow the amplifier to respond to moderately fast sensor signals without requiring a wide-bandband device in every signal path. Its 4 nV/√Hz input-noise density is valuable when the sensor output is small, while rail-to-rail output improves use of the available 2.7 V to 10 V supply range. Confirm the source impedance and sensor output common-mode range before selecting the gain and feedback resistors.
Low-Noise Active Filter
The TS971ID can implement a low-noise active filter in audio, measurement, or control circuitry where 4 nV/√Hz input noise and 12 MHz gain bandwidth provide a useful balance. The amplifier can supply gain around an RC or SC network, but stability must be checked against the selected noise-gain curve and output loading. Its 4 V/µs slew rate also reduces large-signal distortion compared with slower general-purpose amplifiers. Keep high-impedance nodes short, place filter capacitors close to their relevant pins, and avoid routing the sensitive input node beneath noisy switching or digital return paths.
Battery-Powered Measurement Front End
The TS971ID is well matched to a battery-powered measurement front end that needs low noise without a wide supply requirement. Operation from 2.7 V to 10 V supports 3.3 V and 5 V architectures, and the family is specifically described by STMicroelectronics as suitable for portable and battery-supplied equipment. The 4 nV/√Hz noise density helps minimize the amplifier's contribution when amplifying weak transducer outputs. Rail-to-rail output can improve dynamic range, but designers should still examine quiescent current, output load, common-mode limits, and battery-impedance effects from the manufacturer datasheet.
Industrial Instrumentation Signal Buffer
The TS971ID can buffer higher-impedance sensor or divider outputs in industrial instrumentation, provided the selected grade satisfies the environmental requirements. Its 12 MHz gain-bandwidth product provides more bandwidth than a strictly audio-oriented amplifier, while the 4 V/µs slew rate supports faster signal transitions. Low input noise helps preserve small transducer signals, and the 2.7 V to 10 V operating range accommodates common control rails. For an industrial design, verify operating temperature, ESD performance, input common-mode range, and output-current capability; the verified excerpts provide 2 kV ESD protection but not the full temperature rating.
General-Purpose Rail-to-Rail Interface
The TS971ID is a compact choice for a general-purpose rail-to-rail interface when the design requires low noise and moderate bandwidth in an 8-pin SOIC package. The single-amplifier configuration supports voltage followers, gain stages, comparators, and signal-conditioning blocks where only one analog channel is needed. Its 4 V/µs slew rate supports faster signal transitions than a strictly audio-oriented amplifier. The 2.7 V to 10 V range fits common low-voltage rails, but the output must remain within its operating limits and the application must avoid violating input common-mode constraints.
Dados de referência de engenharia para TS971ID — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TS971IYDT | TS971LT |
|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
Principais diferenciais
- Combines low noise with moderate high-frequency capability (vs General-purpose low-noise amplifiers without the same documented bandwidth)
- Rail-to-rail output expands low-voltage signal range (vs Non-rail-to-rail single-supply operational amplifiers)
- Single amplifier in an 8-pin SOIC (vs Dual or quad rail-to-rail amplifier packages)
Notas de projeto
Place the input, output, feedback, and supply-decoupling components close to the TS971ID pins to minimize parasitic capacitance and resistance. Keep the high-impedance input node physically short and route it away from switching nodes and digital return currents. For portable or audio designs, use a continuous ground reference and decouple the amplifier supply locally. The verified material does not provide recommended capacitor values, so component sizing must follow the manufacturer stability and application guidance rather than an assumed universal value.
Validate loop gain and phase margin for the intended feedback network because a 12 MHz gain-bandwidth product does not guarantee stability with every load or noise-gain configuration. Check capacitive loading at the output, maintain the allowed input and output common-mode ranges, and include a feedback resistor close to the device where practical. When amplifying small signals, pay particular attention to resistor thermal noise and leakage because the amplifier's 4 nV/√Hz input-noise density cannot prevent those external sources from setting the total noise floor.
Design the supply path for the application's actual output swing and load. The TS971ID supports a 2.7 V to 10 V supply range, but rail-to-rail output does not imply unlimited output voltage, current, or capacitive-drive capability. Confirm the output-current and load limits in the manufacturer datasheet, provide local supply decoupling, and avoid allowing supply noise or ground movement to corrupt low-level signals. No current value was present in the verified excerpts, so output-current and thermal calculations cannot be completed from the supplied evidence.
Informações de conformidade
The verified excerpts do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status for the TS971ID. TS971IYDT is identified as automotive-oriented, but qualification evidence was not included, so no AEC-Q100 claim is made.