TS934IN - Dual Micropower RRO Op Amp | STMicroelectronics
부품 번호: TS934IN ✗ 단종TS934IN 개요
An operational amplifier is an active analog integrated circuit that uses high open-loop gain to amplify small voltage differences. The TS934IN belongs to the operational-amplifier hierarchy of analog ICs, with rail-to-rail output swing and CMOS input characteristics. Its micropower operating current makes it suitable for battery-powered equipment, portable instruments, sensor interfaces, and low-power control systems where every microamp of supply demand affects battery life.
The TS934 family provides rail-to-rail output swing, single-supply operation, CMOS inputs, ultra-low input bias current, and ESD protection. The TS934IN is identified as a general-purpose, two-circuit amplifier in a 14-DIP package. The 100 kHz gain-bandwidth product is appropriate for low-frequency buffering, amplification, filtering, and thresholding rather than high-speed signal processing. Its CMOS input stage is particularly useful when measuring high-impedance sources because input bias current is minimized.
The TS934IN can operate from 2.7 V supplies, helping designers reduce the power requirements of portable systems. The manufacturer describes a 2.9 Vpp output swing with a 100 kΩ load when supplied from 2.7 V. This specification should be considered when the signal must approach the supply rails, especially for low-voltage sensor signals where headroom is limited.
Typical uses include battery-powered sensor conditioning, portable measurement equipment, audio and control interfaces, low-frequency active filters, and general-purpose dual-amplifier signal paths. Because the device is a dual amplifier, both channels can be used in a single circuit when the application does not require independent supply sequencing.
A key design consideration is to verify input common-mode range, output swing, stability, and load behavior against the manufacturer datasheet before using the amplifier near the supply limits. Decoupling capacitors should be placed close to the supply pins, and the unused channel inputs should be configured according to the recommended application circuit. This page combines the TS934IN technical identity with application guidance, comparison criteria, and practical design notes for engineers.
드롭인 대체품: TS934IN — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: TS934IN (동일 폼 팩터 및 풋프린트) — 차이점: Amplifier Type, ESD Protection, Gain-Bandwidth Product, Input Bias Current, Mounting Type.
TS934CN
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
TS934ID
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →TS934BN
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
TS934IN 최대 정격 & 전기적 특성
| Amplifier Type | Dual operational amplifier |
| 토폴로지 | Rail-to-rail output |
| Input Type | CMOS input |
| Supply Voltage Minimum | 2.7 V |
| Supply Voltage Maximum | 10 V |
| 공급 전류 | 20 µA |
| Gain-Bandwidth Product | 100 kHz |
| Output Swing | 2.9 Vpp with RL = 100 kΩ at 2.7 V supply |
| Input Bias Current | 1 pA |
| Number of Circuits | 2 |
| 패키지 | 14-DIP |
| 실장 유형 | Through-hole |
| ESD Protection | Yes |
| Single-Supply Operation | Yes |
| Output Rail-to-Rail | Yes |
TS934IN 14-dip 핀 구성 가이드
TS934IN(14-dip 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: TS934IN.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
TS934IN 적합 용도: 6 애플리케이션s: Battery-Powered Sensor Conditioning, Portable Measurement Instrumentation, Low-Frequency Active Filtering, Audio Interface Amplification, Industrial Threshold Detection, Low-Power Control and Interface Circuits.
Battery-Powered Sensor Conditioning
The TS934IN fits low-energy sensor front ends where the amplifier must draw only about 20 µA and present very little DC load to the sensor. Its CMOS input bias current can be as low as 1 pA, which helps preserve the accuracy of high-impedance probes, thermistors, and chemical or environmental sensors. The 2.7 V to 10 V supply range supports compact battery-powered systems. Place the amplifier close to the sensor, bypass the supply pins, and verify input common-mode limits and output swing at the lowest operating voltage.
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Portable Measurement Instrumentation
TS934IN is appropriate for handheld meters and portable measurement instruments that combine two low-frequency analog channels. The dual configuration can provide signal gain and output buffering in one 14-DIP device, reducing board area compared with two separate amplifiers. A 20 µA supply current supports battery operation, while the 100 kHz gain-bandwidth product covers slow sensor and control signals. Designers should calculate loop gain from the selected feedback network and avoid operating the output too close to the rail when low-voltage accuracy is required.
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Low-Frequency Active Filtering
The TS934IN can implement active filters and low-frequency signal shapers in portable or low-voltage equipment. Its 100 kHz gain-bandwidth product provides useful bandwidth for filters processing sensor, audio, or control-band signals, while the rail-to-rail output helps use a restricted 2.7 V supply range. Component tolerances and the amplifier's finite gain-bandwidth product can alter filter poles and damping, so simulate the complete circuit and test stability with the intended load. Decoupling and clean grounding are essential at low supply voltages.
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Audio Interface Amplification
TS934IN is suitable for low-level audio input amplification and buffering where low bias current and low supply consumption are important. The CMOS input stage minimizes disturbance to high-impedance audio sources, and the dual-amplifier configuration can handle left and right channels in a compact circuit. The 100 kHz bandwidth is adequate for many control-band and general audio-support tasks but may not meet higher-fidelity or line-level requirements. Confirm the required gain, distortion, slew rate, and output swing using the manufacturer electrical characteristics.
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Industrial Threshold Detection
The TS934IN can compare a slowly varying sensor or process signal against a reference and drive a control threshold. Its low 20 µA supply current is advantageous in distributed or unattended monitoring equipment, while dual channels allow two comparison functions without adding a second package. Rail-to-rail output can improve use of the available signal range, but the 2.9 Vpp output swing specified at 2.7 V with a 100 kΩ load must be considered. Add hysteresis where noise near the threshold could cause repeated switching.
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Low-Power Control and Interface Circuits
TS934IN is useful for buffering references and supporting low-speed control interfaces in embedded systems. Its 2.7 V minimum supply allows operation near common low-voltage rails, and the 14-DIP package simplifies through-hole prototypes, educational platforms, and service assemblies. The CMOS input characteristic is helpful when the source has high output impedance. Keep input and output returns within the amplifier's permitted common-mode and output-swing ranges, and configure the unused channel to prevent unexpected oscillation or excessive current draw.
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추천 제품 요약
엔지니어링 참조 데이터: TS934IN — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TS934CN | TS934ID | TS934BN |
|---|---|---|---|---|
| Package | 14-DIP | 14-DIP | 14-DIP | 14-DIP |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Number of Amplifiers | 2 | 2 | 2 | 2 |
| Supply Voltage Range | 2.7 V to 10 V | 2.7 V to 10 V | 2.7 V to 10 V | 2.7 V to 10 V |
| Supply Current | 20 µA | 20 µA | 20 µA | 20 µA |
| Gain-Bandwidth Product | 100 kHz | 100 kHz | 100 kHz | 100 kHz |
| Input Bias Current | 1 pA | 1 pA | 1 pA | 1 pA |
| Output Swing at 2.7 V | 2.9 Vpp at RL = 100 kΩ | 2.9 Vpp at RL = 100 kΩ | 2.9 Vpp at RL = 100 kΩ | 2.9 Vpp at RL = 100 kΩ |
| Input Type | CMOS | CMOS | CMOS | CMOS |
| Special Offset Grade | TS934IN grade | TS934CN grade | TS934ID grade | TS93xB grade; 2 mV maximum low offset |
주요 차별점
- Very low supply current for a dual rail-to-rail-output amplifier (vs MCP604T-E/SL)
- Operation begins at 2.7 V for low-voltage systems (vs MCP604T-E/SL)
- Dual amplifier in a through-hole 14-DIP package (vs TS934BN)
설계 노트
Use the 20 µA supply-current specification as the starting point for the power budget, but include the load current and both amplifier channels in the final calculation. Estimated: with a 3.3 V supply and 20 µA total supply current, the device supply power is approximately 66 µW. This estimate excludes resistor-divider current, load current, leakage, and external circuitry.
Place the supply-bypass capacitor close to the positive and negative supply pins, and keep the feedback loop on the amplifier side of the board with a short return path. The TS934IN is a 14-DIP through-hole device, so pay particular attention to socket cleanliness and bent pins. Confirm every connection against the pin-description table in the manufacturer TS934 datasheet before energizing the board.
Do not assume full rail-to-rail input operation merely because the output is described as rail-to-rail. At a 2.7 V supply, the manufacturer specifies a 2.9 Vpp output swing with a 100 kΩ load; heavier loads can reduce usable swing. Also avoid high-Q feedback networks without stability analysis, and configure the unused dual channel according to the recommended circuit.
규정 준수 정보
The TS934IN is a general-purpose operational amplifier. No specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status is stated in the manufacturer-family material used for this record.