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Analog Devices Inc. LT1784IS5#TRPBF
- Part No.:
- LT1784IS5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT1784IS5#TRPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,063
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Product details
Overview
LT1784IS5#TRPBF from Analog Devices (formerly Linear Technology) is a 2.5MHz rail-to-rail input/output operational amplifier in a 5-lead TSOT-23 package, operating from 2.5V to 18V total supply voltage. It features Over-The-Top® operation-accepting inputs up to 18V above V– and ≥1V above V+-with ≤750μA quiescent current, reverse battery protection to 18V, and –40°C to 85°C industrial temperature range. It is used in precision sensor conditioning where input signals exceed the positive rail.
For engineers reviewing the LT1784IS5#TRPBF datasheet, LT1784IS5#TRPBF pinout, LT1784IS5#TRPBF application, or LT1784IS5#TRPBF equivalent, key selection criteria include guaranteed Over-The-Top® input capability, rail-to-rail swing with ≤4mV low-side and ≤80mV high-side saturation, 3.5mV max input offset voltage over temperature, and compatibility with single-supply battery-powered systems requiring wide common-mode input range.
Technical Context
The LT1784IS5#TRPBF employs dual-input-stage architecture (NPN and PNP) enabling seamless Over-The-Top® operation: inputs remain functional even when ≥1V above V+, with phase reversal protection preventing false outputs for inputs down to 9V below V–. Its internal compensation supports stable operation driving ≥400pF capacitive loads without external compensation.
Unlike standard op amps, the LT1784IS5#TRPBF maintains specified performance across 2.5V–18V supply range and handles differential/common-mode input voltages up to 18V independent of supply. Input bias current varies with common-mode voltage (–250nA at low VCM, +500nA near V+, +200μA >0.3V above V+), requiring careful bias network design in precision applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 2.5MHz typical - enables stable unity-gain operation up to ~2.5MHz; supports bandwidth-critical signal conditioning. |
| Slew Rate | 2.1V/μs typical - ensures <3.7μs settling to 0.1% for 2V step; suitable for fast transient response in supply monitoring. |
| Input Offset Voltage | 3.5mV max (–40°C to 85°C) - limits DC error in precision amplification paths; requires minimal calibration in 12-bit systems. |
| Supply Current | 750μA max - enables multi-year battery life in portable instrumentation with continuous operation. |
| Input Voltage Range | 0V to 18V on single supply - allows direct interface to unregulated battery rails or industrial sensors exceeding V+. |
| Output Drive | 15mA min - supports direct driving of 10kΩ loads or 4–20mA transmitter stages without buffering. |
| Operating Temperature | –40°C to 85°C - qualified for industrial environments including automotive under-hood and factory automation. |
Pinout & Package
LT1784IS5#TRPBF is housed in a 5-lead ThinSOT™ (TSOT-23) package, 1.00mm max height, JEDEC MO-193 compliant, with 0.95mm pitch and 1.90mm × 2.80mm footprint. Pin 1 marked by notch or dimple; thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Capable of rail-to-rail swing (≤4mV above V–, ≤80mV below V+) and sourcing/sinking ≥15mA; high-Z during shutdown only on 6-lead version. |
| 2 (V–) | Negative supply / ground reference | Reference for all internal circuitry; accepts –10V to +24V relative to V– per absolute max ratings; reverse battery protected. |
| 3 (+IN) | Non-inverting input | Supports Over-The-Top® operation: functional up to 18V above V– and ≥1V above V+; includes phase reversal protection. |
| 4 (V+) | Positive supply | Accepts 2.5V–18V total supply; bypass capacitor (0.1μF) required within 25mm; reverse-battery tolerant to 18V. |
| 5 (–IN) | Inverting input | Matches +IN in Over-The-Top® capability and protection; differential input voltage rated to ±18V; no clamping diodes. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top® input operation | Inputs functional ≥1V above V+ and up to 18V above V–, enabling direct sensing of battery voltage or fault conditions beyond supply rails. |
| Rail-to-rail input and output | Full 0V–18V input range and output swing within 4mV of V– / 80mV of V+ ensures maximum dynamic range in low-voltage systems. |
| Reverse battery protection | Draws <1nA at –18V supply - eliminates need for external series diode, preserving efficiency in battery-powered equipment. |
| Low quiescent current | 750μA max across full temperature and supply range - extends runtime in always-on portable instrumentation and IoT edge nodes. |
| Phase reversal protection | Prevents output inversion for inputs as low as 9V below V– - critical for reliable operation in fault-detection circuits. |
Applications
| Portable Instrumentation | Battery-Powered Systems |
|---|---|
Use Scenario: Handheld multimeter front-end amplifying mV-level thermocouple or shunt voltage signals while powered from a single 3.7V Li-ion cell. IC Role / Device Role / Timing Role: Precision gain stage with Over-The-Top® input accepting sensor signals referenced to battery ground but swinging above V+ during transients. Use Value: Eliminates level-shifting circuitry; enables direct measurement of signals up to 18V with 3.5mV offset error, reducing BOM count and PCB area. |
Use Scenario: Real-time battery voltage monitor in wireless sensor node, measuring cell voltage during charge/discharge cycles including reverse-polarity events. IC Role / Device Role / Timing Role: Rail-to-rail op amp configured as unity-gain buffer with reverse-battery tolerance, feeding ADC input. Use Value: Survives accidental battery reversal without damage or latch-up; draws <750μA continuously, supporting >5-year coin-cell operation. |
| Sensor Conditioning | Supply Current Sensing |
Use Scenario: Amplifying output of industrial pressure transducer with 4–20mA loop output and common-mode voltage up to 24V. IC Role / Device Role / Timing Role: Differential amplifier with inputs referenced to system ground but exposed to 24V common-mode; rejects noise via 84dB CMRR. Use Value: Accepts 0–24V common-mode without external attenuators; maintains 2.5MHz bandwidth for fast response to pressure transients. |
Use Scenario: High-side current sense amplifier measuring load current in 12V automotive subsystem, where shunt voltage exceeds V+ during load dump. IC Role / Device Role / Timing Role: Difference amplifier with Over-The-Top® inputs monitoring shunt placed between battery and load, surviving 18V differential transients. Use Value: Operates without external Zener clamps; handles 18V input differential and 18V common-mode, ensuring robustness during ISO 7637-2 pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1782CS5#TRPBF | Lower power (55μA vs 750μA), lower GBW (1.2MHz), higher offset (800μV max), same Over-The-Top® capability and SOT-23-5 package. | Better suited for ultra-low-power wake-up circuits; insufficient bandwidth for >100kHz sensor signals. | Select LT1782 for battery life-critical applications where bandwidth ≤100kHz suffices; retain LT1784IS5#TRPBF for speed-sensitive designs. |
| AD8605ARTZ-REEL7 | No Over-The-Top® operation; input limited to V– to V+; 10MHz GBW; 65μV offset; same SOT-23-5 package and 2.7–5.5V supply range. | Requires external level-shifting for inputs above V+; superior DC precision but incompatible with rail-exceeding signals. | Choose AD8605 only when inputs stay strictly within supply rails and sub-100μV offset is mandatory; LT1784IS5#TRPBF remains essential for Over-The-Top® use cases. |
Compared with LT1782CS5#TRPBF and AD8605ARTZ-REEL7, LT1784IS5#TRPBF uniquely delivers 2.5MHz bandwidth *with* guaranteed Over-The-Top® input operation in the same 5-lead SOT-23 footprint-enabling simplified, robust front-ends for industrial sensors and battery monitoring where input voltage excursions beyond V+ are routine.
Availability
LT1784IS5#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered systems, and industrial sensor conditioning requiring stable component supply, extended temperature support, and long-term obsolescence management.
Supply support for LT1784IS5#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017; Linear pioneered high-performance analog ICs with emphasis on precision, power efficiency, and ruggedness in harsh environments.
The LT1784 product line was designed specifically for industrial and automotive signal conditioning where inputs routinely exceed supply rails-delivering Over-The-Top® operation, reverse-battery survival, and rail-to-rail performance in miniature packages.
FAQ
What is the maximum input voltage the LT1784IS5#TRPBF can tolerate relative to its supply rails?
The LT1784IS5#TRPBF accepts input voltages up to 18V above V– and ≥1V above V+ (Over-The-Top® operation), with differential input voltage rated to ±18V. This allows direct interfacing with sensors or fault signals exceeding the positive supply-critical in battery monitoring and industrial I/O. The LT1784IS5#TRPBF maintains functionality without clamping or damage under these conditions.
Does the LT1784IS5#TRPBF support true rail-to-rail output swing?
Yes, the LT1784IS5#TRPBF achieves rail-to-rail output swing: within 4mV of V– and 80mV of V+ at no load, degrading predictably under load (e.g., 350mV drop at 10mA sink). This enables full utilization of ADC input ranges in low-voltage systems. The LT1784IS5#TRPBF maintains this capability across its entire 2.5V–18V supply range and –40°C to 85°C temperature span.
Is the LT1784IS5#TRPBF compatible with single-supply operation?
Yes, the LT1784IS5#TRPBF is fully specified for single-supply operation from 2.5V to 18V, with input range extending from 0V to 18V and rail-to-rail output. Its Over-The-Top® architecture allows inputs to exceed V+, making it ideal for single-supply battery systems where sensor signals may transiently surpass the regulated rail. The LT1784IS5#TRPBF requires no dual supplies to achieve full functionality.
How does the LT1784IS5#TRPBF handle reverse battery connection?
The LT1784IS5#TRPBF incorporates reverse battery protection: when V+ is grounded and V– is driven negative to –18V, supply current drops to <1nA, preventing damage or system disruption. This eliminates the need for external series diodes in portable equipment. The LT1784IS5#TRPBF resumes normal operation immediately upon correct polarity restoration-no reset or recovery time required.
What is the guaranteed temperature range for the LT1784IS5#TRPBF?
The LT1784IS5#TRPBF is guaranteed over the industrial temperature range of –40°C to +85°C, with all key parameters-including input offset voltage (3.5mV max), supply current (750μA max), and gain bandwidth (1.2MHz min)-fully specified across this range. This distinguishes it from the 'C' grade (0°C to 70°C only) and ensures reliability in demanding environments like factory automation and automotive under-hood applications. The LT1784IS5#TRPBF meets these specs without derating.
LT1784IS5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Over-The-Top®
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.2V/µs
- Gain Bandwidth Product:
- 2.6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 250 nA
- Voltage - Input Offset:
- 1.6 mV
- Current - Supply:
- 750µA
- Current - Output / Channel:
- 27 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 18 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LT1784IS5#TRPBF FAQ
1.How can I place an order for LT1784IS5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1784IS5#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1784IS5#TRPBF reliable?
The price and inventory of LT1784IS5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1784IS5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1784IS5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1784IS5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1784IS5#TRPBF?
LT1784IS5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1784IS5#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1784IS5#TRPBF?
For technical support, including LT1784IS5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1784IS5#TRPBF requirements.
6.How does Aetrix verify that LT1784IS5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1784IS5#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1784IS5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1784IS5#TRPBF?
All LT1784IS5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1784IS5#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1784IS5#TRPBF part is unused and in its original packaging.
Return procedure for LT1784IS5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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