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Analog Devices Inc. LT1784IS6#TRMPBF
- Part No.:
- LT1784IS6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT1784IS6#TRMPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,123
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Product details
Overview
LT1784IS6#TRMPBF from Analog Devices (acquired Linear Technology) is a 2.5MHz, rail-to-rail input/output operational amplifier in a 6-lead TSOT-23 package, featuring Over-The-Top® operation with inputs up to 18V above V+, reverse battery protection to 18V, and shutdown capability reducing quiescent current to 7μA. It operates from 2.5V to 18V total supply, draws ≤750μA, and drives ±15mA loads - ideal for precision sensor conditioning in battery-powered industrial monitoring systems.
For engineers reviewing the LT1784IS6#TRMPBF datasheet, LT1784IS6#TRMPBF pinout, LT1784IS6#TRMPBF application, or LT1784IS6#TRMPBF equivalent, key selection criteria include its guaranteed –40°C to 85°C industrial temperature range, 3.5mV max input offset voltage, 2.1V/μs slew rate, and SHDN pin compatibility with 0.3V/2V logic thresholds - all validated for single-supply overvoltage-tolerant signal chains.
Technical Context
The LT1784IS6#TRMPBF integrates dual-input-stage architecture (NPN and PNP) enabling Over-The-Top® operation: inputs function reliably ≥18V above V– and up to 18V differential, with phase reversal protection for inputs as low as –9V below V–. Its internal compensation supports ≥400pF capacitive loads without oscillation.
Shutdown functionality is implemented via a dedicated SHDN pin (Pin 5), requiring ≥2V above V– to disable the amplifier - reducing supply current to ≤18μA and placing output in high-impedance state. Input bias current varies with common-mode voltage (250nA typical at VCM < V+–1V; 500nA near V+), and offset voltage drift is specified at 5–15μV/°C over –40°C to 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 2.5MHz typical - enables stable unity-gain operation up to ~2.5MHz or closed-loop gain of 10 at ~250kHz. |
| Slew Rate | 2.1V/μs typical - supports full-scale 2V output transitions in ≤1μs, critical for fast-settling sensor interfaces. |
| Input Offset Voltage | 3.5mV max over –40°C to 85°C - ensures ≤3.5mV error in DC-coupled 12-bit systems with 2.5V reference. |
| Supply Current | 750μA max - allows >1000 hours runtime on a 750mAh coin cell in always-on 3V sensor nodes. |
| Output Drive | ±15mA min - directly interfaces with 50Ω transmission lines or drives 10kΩ loads with <0.1% gain error. |
| Input Voltage Range | 0V to 18V on single supply - accepts signals beyond V+ (Over-The-Top®), eliminating level-shifting in high-side sensing. |
| Shutdown Current | 7μA max - reduces system standby power by >99% vs active mode, enabling ultra-low-power wake-on-event designs. |
Pinout & Package
LT1784IS6#TRMPBF uses the 6-lead ThinSOT™ (TSOT-23) package (JEDEC MO-193), 1.00mm max height, 2.90mm × 1.60mm footprint, with exposed pad not connected internally. Pin 1 marked by notch or dimple; pin numbering follows standard TSOT-23 counterclockwise from top-left when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Capable of rail-to-rail swing (within 80mV of V+, 4mV of V–) and ±15mA sourcing/sinking; high-Z during shutdown. |
| 2 (V–) | Negative supply rail | Reference for all internal circuitry; reverse-battery protected to –18V; input common-mode extends to –10V relative to this pin. |
| 3 (+IN) | Non-inverting input | Accepts voltages from V– to (V+ + 18V); phase reversal protected down to V– – 9V; 5pF input capacitance. |
| 4 (V+) | Positive supply rail | Supports total supply range 2.5V–18V; bypassing with 0.1μF required within 25mm; reverse voltage tolerant to –18V. |
| 5 (SHDN) | Shutdown control input | Active-high: ≥2V above V– disables amplifier; ≤0.3V above V– enables; draws ≤8nA in active state, ≤2μA in shutdown. |
| 6 (–IN) | Inverting input | Identical Over-The-Top® and phase-reversal specs as +IN; differential input voltage rated to ±18V; no clamping diodes. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top® input operation | Enables direct high-side current/voltage sensing where inputs exceed V+ - eliminates external level shifters in battery monitor ICs. |
| Rail-to-rail input and output | Maximizes dynamic range in low-voltage (3V) systems: full 0–3V input and 0–3V output swing preserves 12-bit ADC resolution. |
| Reverse battery protection | Draws <1nA at –18V supply - prevents damage and battery drain in automotive/industrial field instruments with accidental polarity reversal. |
| Shutdown mode with high-Z output | Reduces system idle power and isolates downstream circuitry - essential for multiplexed sensor arrays sharing a common analog bus. |
| Guaranteed –40°C to 85°C operation | Validated performance across full industrial temperature range - suitable for unheated outdoor equipment and factory-floor controllers. |
Applications
| High-Side Current Sensing | Battery Voltage Monitoring |
|---|---|
|
Use Scenario: Measuring charge/discharge current in 12V lead-acid or Li-ion battery packs using a shunt resistor placed between battery positive and load. IC Role / Device Role / Timing Role: LT1784IS6#TRMPBF amplifies mV-level shunt voltage with inputs referenced to battery positive (≥12V), operating in Over-The-Top® mode while rejecting common-mode noise. Use Value: Eliminates need for isolated amplifiers or expensive high-side current sense ICs - reduces BOM cost by 40% and PCB area by 30%. |
Use Scenario: Accurately tracking battery voltage across full discharge curve (10.5V–14.4V) in portable medical devices with 3.3V microcontroller ADC. IC Role / Device Role / Timing Role: LT1784IS6#TRMPBF buffers and scales battery voltage via resistive divider, maintaining rail-to-rail linearity and low offset error over temperature. Use Value: Achieves ±5mV absolute voltage accuracy (vs. ±20mV with generic op amps), extending usable battery life estimation fidelity by 15%. |
| 4–20mA Transmitter Interface | Industrial Sensor Signal Conditioning |
|
Use Scenario: Converting process sensor outputs (e.g., pressure, temperature) into standardized 4–20mA loop signals for PLCs in hazardous environments. IC Role / Device Role / Timing Role: LT1784IS6#TRMPBF serves as precision I/V converter and loop driver, operating from 24V loop supply with inputs referenced to loop ground. Use Value: Supports full 20mA output with <0.1% gain error and <10μA zero-point drift - meets IEC 61000-4-5 surge immunity requirements for Class A transmitters. |
Use Scenario: Amplifying low-amplitude signals from strain gauges, thermocouples, or pH electrodes in factory automation sensors. IC Role / Device Role / Timing Role: LT1784IS6#TRMPBF provides low-noise (25nV/√Hz), low-offset amplification with shutdown during sensor sleep cycles. Use Value: Enables 16-bit effective resolution with <1LSB offset drift over temperature - improves measurement repeatability in ISO 9001-certified production test fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1782CS5#TRMPBF | Lower power (55μA vs 750μA), lower GBW (1.2MHz), no shutdown, 5-pin SOT-23 | Optimized for micropower sensor front-ends where bandwidth <1MHz suffices and shutdown is unnecessary | Select when battery life >5 years is required and 2.5MHz bandwidth is excessive |
| LT1797CS6#TRMPBF | Higher speed (10MHz GBW, 2.25V/μs SR), no Over-The-Top®, same 6-pin TSOT-23 | Targeted at high-frequency signal acquisition (e.g., ultrasound, audio) without input overvoltage tolerance | Select when >5MHz small-signal bandwidth is needed and inputs remain within rails |
Compared with LT1782CS5#TRMPBF, LT1784IS6#TRMPBF trades 14× higher quiescent current for 2× bandwidth and adds Over-The-Top® operation and shutdown; versus LT1797CS6#TRMPBF, it sacrifices 4× bandwidth to achieve 18V input overvoltage tolerance and reverse-battery protection - making LT1784IS6#TRMPBF uniquely suited for ruggedized industrial sensing.
Availability
LT1784IS6#TRMPBF is available at Aetrix Electronics and suitable for high-reliability industrial sensor conditioning, battery management systems, and 4–20mA transmitter designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT1784IS6#TRMPBF 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 and maintains full product support, manufacturing, and qualification for legacy Linear parts including the LT1784 series.
The LT1784 family was designed specifically for precision, overvoltage-tolerant signal conditioning in space-constrained industrial and automotive applications - emphasizing robustness, rail-to-rail operation, and low-power shutdown without sacrificing AC performance.
FAQ
What is the maximum input voltage tolerance of the LT1784IS6#TRMPBF relative to the supply rails?
The LT1784IS6#TRMPBF supports input voltages up to 18V above V– and differential inputs up to ±18V, independent of supply voltage. Its Over-The-Top® architecture allows either or both inputs to operate up to 18V above V+, enabling direct high-side sensing without level shifters. This is confirmed in Absolute Maximum Ratings and verified across –40°C to 85°C in Electrical Characteristics tables.
Does the LT1784IS6#TRMPBF require external compensation for capacitive loads?
No - the LT1784IS6#TRMPBF is internally compensated to drive ≥400pF capacitively without oscillation. For loads >400pF (up to 10,000pF), Linear Technology recommends adding a 0.22μF capacitor in series with a 150Ω resistor from output to ground. This RC network stabilizes the amplifier under heavy capacitive loading, as documented in Applications Information section and Typical Performance Characteristic G22.
How does the shutdown feature of the LT1784IS6#TRMPBF affect output state and leakage?
When the SHDN pin is driven ≥2V above V–, the LT1784IS6#TRMPBF disables its internal circuitry, reducing supply current to ≤18μA and placing the output in high-impedance state (<1μA leakage). Output voltage floats but remains within V– to V+; no pull-up/down is required. This behavior is characterized in Electrical Characteristics (ISHDN, Output Leakage Current specs) and validated in Typical Performance Curve G28.
What is the guaranteed input offset voltage specification for LT1784IS6#TRMPBF over its full operating temperature range?
The LT1784IS6#TRMPBF guarantees a maximum input offset voltage of 4.5mV over the full –40°C to 85°C industrial temperature range, with typical value of 3.5mV at 25°C. This is explicitly stated in the Electrical Characteristics table under "VOS Input Offset Voltage" with "l" notation denoting full-range specification, and applies to both 5V and ±5V supply conditions.
Can the LT1784IS6#TRMPBF be used with single-supply 3V operation while maintaining rail-to-rail output swing?
Yes - the LT1784IS6#TRMPBF is fully specified for 3V single-supply operation (V+ = 3V, V– = 0V), delivering rail-to-rail output swing: VOH ≥ 2.885V (≤115mV below V+) and VOL ≤ 400mV (≤400mV above V–) at ISOURCE = 3mA and ISINK = 5mA. These values are guaranteed in the Electrical Characteristics table under "VOH" and "VOL" sections for VS = 3V conditions.
LT1784IS6#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Over-The-Top®
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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-23-6
LT1784IS6#TRMPBF FAQ
1.How can I place an order for LT1784IS6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1784IS6#TRMPBF 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 LT1784IS6#TRMPBF reliable?
The price and inventory of LT1784IS6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1784IS6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1784IS6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1784IS6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1784IS6#TRMPBF?
LT1784IS6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1784IS6#TRMPBF 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 LT1784IS6#TRMPBF?
For technical support, including LT1784IS6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1784IS6#TRMPBF requirements.
6.How does Aetrix verify that LT1784IS6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1784IS6#TRMPBF 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 LT1784IS6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1784IS6#TRMPBF?
All LT1784IS6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1784IS6#TRMPBF, 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 LT1784IS6#TRMPBF part is unused and in its original packaging.
Return procedure for LT1784IS6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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