TS934IN - Dual Micropower RRO Op Amp | STMicroelectronics
MPN: TS934IN ✗ Cuối đờiTS934IN Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho TS934IN — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với TS934IN (cùng hình factor và footprint) — khác nhau ở Amplifier Type, ESD Protection, Gain-Bandwidth Product, Input Bias Current, Mounting Type.
TS934CN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TS934ID
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →TS934BN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
TS934IN Tỷ lệ tối đa & tính chất điện
| Amplifier Type | Dual operational amplifier |
| Cấu trúc | Rail-to-rail output |
| Input Type | CMOS input |
| Supply Voltage Minimum | 2.7 V |
| Supply Voltage Maximum | 10 V |
| Điện áp cung cấp | 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 |
| Hộp | 14-DIP |
| Kiểu lắp đặt | Through-hole |
| ESD Protection | Yes |
| Single-Supply Operation | Yes |
| Output Rail-to-Rail | Yes |
Hướng dẫn cấu hình chân TS934IN 14-dip
Cấu hình chân cho TS934IN (14-dip gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho TS934IN.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
TS934IN phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TS934IN — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Very low supply current for a dual rail-to-rail-output amplifier (vsMCP604T-E/SL)
- Operation begins at 2.7 V for low-voltage systems (vsMCP604T-E/SL)
- Dual amplifier in a through-hole 14-DIP package (vsTS934BN)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.