TLV8544DR - 500nA Quad RRIO Op Amp | Texas Instruments
MPN: TLV8544DR ✓ فعالTLV8544DR نمای کلی
An operational amplifier is an active analog building block that amplifies the difference between two input voltages. A rail-to-rail-input-and-output amplifier can accept input signals near either supply rail while its output can also swing close to those rails. The TLV8544 family belongs to the operational-amplifier hierarchy, which sits within amplifier ICs and broader analog and mixed-signal signal-chain systems.
The TLV8544DR is particularly relevant to battery-powered and energy-harvesting equipment because its 500 nA quiescent current per channel limits the continuous current drawn when the amplifier is idle. Its rail-to-rail input and output architecture supports low-voltage sensor interfaces, while the 8 kHz gain-bandwidth product is suited to low-frequency conditioning rather than high-speed signal processing. Four independent amplifier channels can also reduce the component count in multichannel instrumentation.
The device combines micropower operation with rail-to-rail signal handling in one package. According to the Texas Instruments product information, every TLV8544 version is specified for operation from -40 °C to 125 °C. Its low-voltage design makes the device appropriate for systems powered from a single lithium cell, a low-voltage regulator, or a harvested-energy storage node. The 14-pin SOIC package provides a conventional surface-mount assembly option and is suitable for conventional temperature and process-control production lines.
Typical uses include battery-powered sensing, low-level current measurement, portable instrumentation, signal conditioning for low-frequency sensors, and buffered references. In each case, the key design trade-off is the relationship between bandwidth and power: the 8 kHz characteristic is appropriate for slowly changing analog signals, but it is not intended for high-frequency waveform, video, or communications amplification.
When designing a board around the TLV8544DR, check input and output common-mode limits at the actual supply voltage, confirm that source and load impedances preserve stability, and account for input-bias-current error when working with high-impedance sensors. Decoupling capacitors should be placed close to the supply pins, and unused amplifier inputs should be connected to a defined common-mode voltage rather than left floating.
This product record combines the manufacturer's device description with package, operating-range, and application-focused engineering guidance. It also organizes sourcing questions, verified drop-in alternatives, comparison points, and practical layout considerations into a concise design reference for engineers evaluating the TLV8544DR.
جایگزین‌های drop-in برای TLV8544DR — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
هیچ جایگزین مستقیمی برای این محصول موجود نیست.
درخواست جایگزینTLV8544DR حداکثر مقادیر مجاز و مشخصات الکتریکی
| Number of Amplifier Channels | 4 channels |
| Maximum Supply Voltage | 3.6 V |
| Quiescent Current per Channel | 500 nA |
| Gain-Bandwidth Product | 8 kHz |
| Input Common-Mode Range | Rail-to-rail input |
| Output Swing | Rail-to-rail output |
| محدوده دمای کاری | -40 °C to 125 °C |
| بسته‌بندی | 14-pin SOIC |
| نوع نصب | Surface mount |
| Amplifier Type | General-purpose operational amplifier |
| Low-Power Classification | Nanopower operational amplifier |
راهنمای پیکربندی پین TLV8544DR 14-pin soic
پیکربندی پین برای TLV8544DR (پکیج 14-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 TLV8544DR.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
TLV8544DR مناسب است برای 6 کاربردs: Battery-Powered Sensor Conditioning, Portable Low-Level Instrumentation, Energy-Harvesting Monitoring, Industrial Process Measurement, Low-Power Voltage Detection, Precision Current Monitoring.
Battery-Powered Sensor Conditioning
The TLV8544DR fits battery-powered sensor interfaces because its four channels combine 500 nA quiescent current per channel with rail-to-rail input and output behavior. It can condition slowly changing outputs from resistive sensors while operating from a low-voltage source. The 8 kHz gain-bandwidth product is appropriate for temperature, pressure, and light measurements, and the -40 °C to 125 °C specification supports industrial and automotive-adjacent equipment. Use stable reference and bypass networks, and avoid demanding fast settling beyond the amplifier's stated bandwidth.
پیشنهادی
Portable Low-Level Instrumentation
The TLV8544DR is useful in portable instrumentation where four measured signals must be amplified without adding substantial standby load. Its 500 nA quiescent current per channel helps preserve battery life, while the 3.6 V maximum supply rating supports compact single-cell systems. The 8 kHz gain-bandwidth product handles temperature, pressure, strain-gauge, and slow analog measurements. For instrumentation amplifiers, place input resistors close to the source and maintain symmetry so input-bias-current error does not degrade common-mode rejection.
پیشنهادی
Energy-Harvesting Monitoring
The TLV8544DR can serve as the first analog stage in an energy-harvesting monitor, where available power is limited and continuous amplifier current matters. Its 500 nA quiescent current per channel minimizes the load when the harvested source is weak, while rail-to-rail inputs accommodate sensor signals near the supply rails. The 8 kHz gain-bandwidth product suits low-frequency environmental and energy-flow measurements rather than fast communications signals. Designers should also account for input offset and bias-current errors when operating with high source impedances.
پیشنهادی
Industrial Process Measurement
The TLV8544DR is suitable for multichannel process measurement when the system operates from a low-voltage rail and must cover a wide ambient range. Its four channels reduce the number of packages needed for pressure, temperature, and position sensing, while the specified -40 °C to 125 °C range supports demanding equipment. The 500 nA per-channel quiescent current and 8 kHz bandwidth favor slow process variables with limited signal bandwidth. Use protective limiting networks and verify grounding when sensor sources are electrically noisy.
پیشنهادی
Low-Power Voltage Detection
The TLV8544DR can buffer divider outputs or support threshold-level monitoring in low-power voltage-detection systems. Rail-to-rail input and output operation helps preserve signal range in compact systems, and 500 nA quiescent current per channel reduces standby demand. Its 8 kHz gain-bandwidth product is ample for battery thresholds and supply-state signals that change slowly. For switching-node monitoring, add filtering to prevent fast transients from driving the amplifier beyond its operating limits, and use its output to drive the input of a suitable comparator or logic stage.
پیشنهادی
Precision Current Monitoring
The TLV8544DR can buffer and amplify low-level voltage signals associated with current sensing when the required bandwidth is below 8 kHz. Its 500 nA per-channel quiescent current is useful in portable power monitors, while rail-to-rail operation helps preserve signal swing in a constrained voltage range. The amplifier should follow a suitable shunt or current-sense front end rather than replace a dedicated high-side measurement device. Layout should minimize trace resistance and keep sensitive input nodes compact to reduce offset, noise pickup, and thermal effects.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای TLV8544DR — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول |
|---|---|
| Package | 14-pin SOIC |
| Brand | Texas Instruments |
| Number of Channels | 4 |
| Maximum Supply Voltage | 3.6 V |
| Quiescent Current per Channel | 500 nA |
| Gain-Bandwidth Product | 8 kHz |
| Input Common-Mode Range | Rail-to-rail input |
| Output Swing | Rail-to-rail output |
| Operating Temperature Range | -40 °C to 125 °C |
| Mounting Type | Surface mount |
تفاوت‌های کلیدی
- Four amplifier channels in one low-power package (در مقابلTLV8541)
- Lower channel count than a quad alternative while preserving basic amplification function (در مقابلTLV8542)
- Nanopower operation combined with rail-to-rail signal handling (در مقابلTLV8544)
یادداشت‌های طراحی
Use the 500 nA per-channel quiescent current as the baseline for standby-current estimation, but include sensor, divider, reference, and leakage currents in the complete power budget. Decouple each supply pin as close as practical with the capacitance recommended by the manufacturer electrical-characteristics table. Because the device is intended for low-voltage operation, verify that the actual supply remains inside the electrical limits across battery variation and switching transients.
Keep amplifier input traces short, route them away from switching nodes and high-current returns, and maintain symmetry between differential inputs. Place compensation, gain-setting, and bypass components close to their associated pins. Connect every unused input to a defined common-mode voltage; leaving an input floating can allow leakage and induced noise to move the output unpredictably, especially in a low-noise, battery-powered design.
Do not interpret the 8 kHz gain-bandwidth product as a high-speed signal specification. The TLV8544DR is intended for slow analog signals, so large operating gains can reduce usable bandwidth and settling performance. Check output swing against the selected load, confirm common-mode input limits at the minimum supply voltage, and include sufficient bypass capacitance to control supply ripple. These checks are especially important when the source impedance is high or the output drives a capacitive load.
اطلاعات انطباق
The manufacturer product information confirms the TLV8544DR ordering option and operating-temperature range but does not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals classifications.