THS4140ID - 160MHz Differential Amplifier | Texas Instruments
MPN: THS4140ID ✓ فعالTHS4140ID نمای کلی
A fully differential amplifier is an amplifier category that processes a pair of complementary signals rather than a single-ended voltage. Its differential input and differential output structure helps reject common-mode noise, maintain balanced signal paths, and improve compatibility with high-speed ADCs. Within the broader hierarchy, THS4140ID is an analog amplifier IC, a linear amplifier, an instrumentation amplifier function, and a differential amplifier.
The THS4140 family is identified by a 160MHz -3 dB bandwidth and a 450 V/us slew rate. According to the Texas Instruments product information, the device is intended for high-speed single-ended-to-differential conversion, differential ADC driving, and differential antialiasing. Its high bandwidth allows it to process signals well beyond the useful bandwidth of many general-purpose precision op amps, while the high slew rate reduces distortion when driving large voltage changes into capacitive and resistive loads.
The amplifier also includes shutdown functionality, allowing a system designer to reduce power consumption when the signal path is inactive. This is useful in multichannel test equipment, portable instrumentation, communications receivers, and data-acquisition systems where channel activity can be controlled independently. The SOIC-8 package provides a conventional surface-mount footprint compatible with automated assembly and compact mixed-signal boards.
Typical applications include differential ADC input stages, communications-channel interfaces, antialiasing networks, single-ended-to-differential signal conversion, video and imaging signal conditioning, and precision instrumentation front ends. In these systems, the amplifier preserves a balanced signal path and supplies sufficient bandwidth and slew rate to avoid excessive gain droop or slew-rate distortion.
For layout, follow the pin-assignment table and recommended application circuit in the manufacturer datasheet. Keep feedback components and input and output paths short, maintain symmetry between the positive and negative branches, and provide adequate supply bypassing close to the device. Confirm output swing, output-current capability, shutdown timing, and load stability for the selected supply and termination conditions before releasing a production design.
This page combines the verified device identity, manufacturer characteristics, package information, application guidance, and drop-in alternatives to support engineering selection. It also highlights the checks needed for PCB reuse, signal-chain matching, and supply-noise control that are not fully captured by a distributor listing alone.
جایگزین‌های drop-in برای THS4140ID — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای THS4140ID (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Amplifier Type, Operating Temperature Range, Third-Harmonic Distortion.
THS4141ID
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←THS4140IDG4
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
THS4140IDRG4
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
THS4141IDG4
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
THS4141IDRG4
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
THS4140ID حداکثر مقادیر مجاز و مشخصات الکتریکی
| Product Type | Fully differential input/output amplifier |
| Amplifier Type | 1 circuit differential amplifier |
| Differential Gain Bandwidth | 160 MHz -3 dB bandwidth |
| Slew Rate | 450 V/us |
| Shutdown Function | Yes |
| Primary Application | Single-ended-to-differential conversion |
| ADC Driver Capability | Differential ADC driver |
| Third-Harmonic Distortion | -79 dB |
| Supply Voltage Range | +/-16.5 V / 33 V |
| Typical Supply Current | 13.2 mA |
| Input Bias Current | 15 uA |
| Maximum Positive Input Voltage | 0.7 V below positive supply |
| محدوده دمای کاری | -40C to +85C |
| بسته‌بندی | 8-pin SOIC |
| نوع نصب | Surface mount |
| وضعیت چرخه عمر | Active |
راهنمای پیکربندی پین THS4140ID 8-pin soic
پیکربندی پین برای THS4140ID (پکیج 8-pin soic). این قطعه آنالوگ دارای پین‌های ورودی، خروجی و تغذیه است. برای پیکربندی‌های پین offset null، جبران‌سازی و فعال‌سازی به دیتاشیت سازنده مراجعه کنید. ایده‌آل برای مدارهای شرطی‌سازی سیگنال و تقویت‌کننده.
داده پین‌آوت تفصیلی موجود نیست برای THS4140ID.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
THS4140ID مناسب است برای 6 کاربردs: High-Speed Differential ADC Interface, Single-Ended-to-Differential Conversion, Communications Receiver Front End, Precision Test and Measurement Front End, Differential Antialiasing Stage, Imaging and Video Signal Conditioning.
High-Speed Differential ADC Interface
The THS4140ID fits a differential ADC front end because its 160 MHz -3 dB bandwidth provides substantial margin for high-speed conversion systems, while the 450 V/us slew rate helps maintain large-signal response through the conversion cycle. It can convert a single-ended source into a complementary differential pair or condition an existing balanced signal. This application benefits from the device’s fully differential input/output architecture, which keeps the signal path balanced and reduces susceptibility to common-mode interference. The ADC’s input range, settling rate, input capacitance, and required gain must be checked against the amplifier’s output-swing and stability limits before implementation.
پیشنهادی
Single-Ended-to-Differential Conversion
The THS4140ID is designed for single-ended-to-differential conversion, allowing one-sided sensor or test signals to become a balanced pair for downstream converters. Its 160 MHz -3 dB bandwidth supports substantially faster signals than a conventional precision op amp, and its 450 V/us slew rate reduces slew-related distortion during rapid transitions. Maintaining equal amplitude and phase in the positive and negative paths is essential for cancellation of common-mode noise. Component matching, resistor ratio accuracy, and symmetric board routing therefore deserve the same attention as the amplifier’s gain and bandwidth settings.
پیشنهادی
Communications Receiver Front End
A communications receiver can use the THS4140ID where a balanced, high-speed interface is needed before demodulation or digitization. The 160 MHz -3 dB bandwidth accommodates wideband IF and baseband conditioning, while the differential output supports downstream converters and filtering stages that benefit from balanced interconnections. The device’s -79 dB third-harmonic distortion rating, as identified in the Texas Instruments documentation, helps characterize nonlinear behavior in transmitter or antialiasing paths. Designers should still evaluate gain, common-mode range, output loading, and spectral masks for the specific communication standard rather than relying on bandwidth alone.
پیشنهادی
Precision Test and Measurement Front End
The THS4140ID can condition high-rate measurement signals when the instrument requires a differential output and the source bandwidth extends beyond conventional precision op amps. Its 160 MHz -3 dB bandwidth provides the necessary signal path speed, while the 450 V/us slew rate reduces distortion when driving test and converter inputs through practical board and probe loads. In an instrumentation design, separate the analog input from digital control and power domains to preserve measurement integrity. Calibration will depend on the complete gain chain, resistor tolerances, source impedance, and the selected converter’s transfer function.
پیشنهادی
Differential Antialiasing Stage
The THS4140ID is identified by Texas Instruments as a differential antialiasing amplifier, making it appropriate for wideband filter interfaces where a balanced topology improves rejection of unwanted common-mode energy. Its 160 MHz -3 dB bandwidth gives sufficient headroom above the intended signal band, and the 450 V/us slew rate helps reduce distortion as the differential output moves through its full range. The antialiasing network’s actual bandwidth and stopband attenuation remain determined by the external resistors and capacitors. Place those networks close to the amplifier and maintain equal component values and trace geometry in both differential branches.
پیشنهادی
Imaging and Video Signal Conditioning
The THS4140ID is suitable for high-speed imaging and video signal-conditioning paths that require differential drive rather than a single-ended output. Its 160 MHz -3 dB bandwidth covers a broad range of analog video and imaging frequencies, and the 450 V/us slew rate supports rapid signal transitions into suitable loads. The balanced output can reduce sensitivity to ground and supply disturbances when paired with a properly designed downstream receiver. Video-specific requirements such as gain accuracy, settling time, output impedance, and cable or ADC loading should be evaluated from the manufacturer electrical tables and the target system’s video timing requirements.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای THS4140ID — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
The listed THS4140 processing and reel variants are the closest choices when exact THS4140 behavior must be retained, but confirm the pin and qualification details in the manufacturer ordering information before changing the ordering code. Consider the THS4141 family only after checking its functional architecture, gain behavior, common-mode range, and pin functions; its package and family bandwidth are not sufficient proof of drop-in compatibility. For low-speed precision or low-power single-ended channels, a conventional precision amplifier will usually offer better noise, offset, drift, or power-consumption characteristics. For mixed-signal boards that require high-speed differential drive and a lower-speed auxiliary channel, THS4031ID can complement the THS4140ID in the single-ended path.
مقایسه با جایگزین‌ها
| پارامتر | این محصول | THS4141ID | THS4140IDG4 | THS4140IDRG4 | THS4141IDG4 | THS4141IDRG4 |
|---|---|---|---|---|---|---|
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Family | THS4140 | THS4141 | THS4140 | THS4140 | THS4141 | THS4141 |
| Functional Architecture | Fully differential input/output amplifier | THS4141 family variant | THS4140 family variant | THS4140 family variant | THS4141 family variant | THS4141 family variant |
تفاوت‌های کلیدی
- Wideband differential signal handling (در مقابلTHS4141ID)
- Industrial temperature ordering option (در مقابلTHS4140CD)
- Purpose-built high-speed differential interface (در مقابلTLV271IDR)
یادداشت‌های طراحی
Use the Texas Instruments THS4140 recommended layout for the 8-pin SOIC option. Keep the input, feedback, and output paths short, and route the positive and negative branches symmetrically so parasitic capacitance and propagation delay do not degrade differential balance. Place bypass capacitors at the supply pins according to the manufacturer application circuit. Avoid placing long test pads or unrelated high-current paths between the amplifier and external gain or feedback components.
Preserve a symmetric differential topology from inputs through the gain network and outputs. Match resistor networks and maintain equivalent trace lengths and termination on both branches. The device’s 160 MHz -3 dB bandwidth makes small layout differences observable, particularly when the source impedance is high or the load includes significant capacitance. Validate differential gain, phase, and even-order distortion on the finished assembly rather than relying only on simulation with ideal sources.
Do not assume that the THS4141 or another same-family ordering variant is electrically interchangeable with the THS4140. Compare the manufacturer pin table, differential signal architecture, gain configuration, common-mode range, output swing, and shutdown logic. Also confirm that the selected resistor and capacitor values remain stable over the required frequency range and temperature range. A footprint match alone does not establish functional compatibility.
Estimated: using the verified 33 V total supply and 13.2 mA typical supply current, the amplifier consumes approximately 0.436 W under those stated conditions. This is an operating-point estimate rather than a maximum dissipation specification. Include the output-drive contribution, actual supply tolerance, shutdown state, ambient temperature, and PCB copper area when checking junction temperature. Use the manufacturer electrical and thermal tables for production worst-case calculations.
اطلاعات انطباق
The active lifecycle status is identified by the Texas Instruments product page. Specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations were not identified in the manufacturer or distributor records.