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Analog Devices Inc. LT1784CS6#TRMPBF
- Part No.:
- LT1784CS6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT1784CS6#TRMPBF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,439
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Product details
Overview
LT1784CS6#TRMPBF from Analog Devices (formerly 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. It operates from 2.5V to 18V total supply, draws ≤750μA quiescent current, and drives ±15mA loads - ideal for precision sensor conditioning in battery-powered industrial monitoring systems.
For engineers reviewing the LT1784CS6#TRMPBF datasheet, LT1784CS6#TRMPBF pinout, LT1784CS6#TRMPBF application, or LT1784CS6#TRMPBF equivalent, key selection criteria include its unique Over-The-Top® input range, shutdown-enabled low-power mode (5μA), rail-to-rail swing at 3V/5V/±5V supplies, and guaranteed –40°C to 85°C performance for portable instrumentation and 4–20mA transmitter front-ends.
Technical Context
The LT1784CS6#TRMPBF integrates dual-input-stage architecture (NPN and PNP) enabling seamless Over-The-Top® operation: inputs function reliably ≥18V above V– and up to 18V above V+, with phase reversal protection for inputs down to 9V below V–. Its internal compensation supports ≥400pF capacitive loads without oscillation.
It features a dedicated SHDN pin (Pin 5) that places the output in high-impedance state and reduces supply current to ≤18μA, with defined VIH/VIL thresholds (2V/0.3V on single supply, –3V/–4.7V on split supply). Gain bandwidth product remains stable across 2.5V–18V supply range and –40°C to 85°C temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 2.5MHz typical - enables stable unity-gain operation up to ~2.5MHz; sufficient for anti-aliasing filters and fast sensor signal chains. |
| Slew Rate | 2.1V/μs typical - supports 10kHz full-swing signals at 2VP-P without distortion; critical for pulse amplification in supply current sensing. |
| Input Offset Voltage | 3.5mV max over –40°C to 85°C - ensures ≤0.7% error in 500mV full-scale 4–20mA loop receivers without trimming. |
| Supply Current | 750μA max - enables >1-year battery life in coin-cell-powered portable instrumentation with 10s of μA average draw. |
| Shutdown Current | 18μA max - reduces system standby power by >97% versus active mode; essential for duty-cycled sensor nodes. |
| Input Voltage Range | 0V to 18V on single supply - allows direct interfacing to unregulated battery rails or industrial 12V/24V lines without level-shifting. |
| Output Drive | ±15mA min - sustains rail-to-rail swing into 667Ω loads (e.g., 4–20mA loop with 250Ω shunt + PCB trace resistance). |
Pinout & Package
LT1784CS6#TRMPBF is housed in a 6-lead ThinSOT™ (TSOT-23) package, 1mm profile, JEDEC MO-193 compliant, with 0.95mm pitch and 1.90mm × 2.80mm footprint. Pin 1 marked via top-side dot; pin numbering follows standard S6 configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; high-impedance when SHDN asserted; capable of sourcing/sinking ≥15mA. |
| 2 (V–) | Negative supply rail | Reference for all internal circuitry; accepts –18V reverse bias; input common-mode extends 10V below this pin. |
| 3 (+IN) | Non-inverting input | Accepts voltages from V– to (V+ + 18V); phase reversal protected to 9V below V–; bias current <500nA. |
| 4 (V+) | Positive supply rail | Supports 2.5V–18V total supply; reverse battery protection limits current to <1nA if polarity reversed. |
| 5 (SHDN) | Shutdown control | Active-high: ≥2V (single supply) or ≤–3V (split supply) disables amplifier; output goes Hi-Z; IQ drops to ≤18μA. |
| 6 (–IN) | Inverting input | Matches +IN specs; differential input voltage rating = 18V; no clamping diodes to V+/V–; CMRR ≥60dB to 18V CM. |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top® Input Operation | Enables direct sensing of signals exceeding V+ (e.g., battery voltage monitoring in automotive stop-start systems where Vbatt > Vreg). |
| Rail-to-Rail Input and Output | Maximizes dynamic range in low-voltage (3V) systems: full 0–3V input and output swing preserves SNR in portable medical sensors. |
| Reverse Battery Protection | Draws <1nA at –18V supply - eliminates need for external series diode, reducing voltage drop and power loss in battery backup circuits. |
| Shutdown Mode | Reduces supply current to ≤18μA and isolates output - enables power-gating in multi-channel data acquisition systems without signal coupling. |
| Phase Reversal Protection | Prevents false outputs during transient overvoltage events (e.g., ESD-induced negative spikes on sensor lines), improving system robustness. |
Applications
| Battery-Powered Sensor Interface | 4–20mA Transmitter Front-End |
|---|---|
|
Use Scenario: Amplifying low-level thermocouple or strain gauge outputs in handheld test equipment powered by two AA cells (2.4–3.2V). IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with Over-The-Top® input accepting sensor bias above V+, rail-to-rail output driving ADC reference buffer. Use Value: Eliminates level-shifting components; 750μA IQ extends battery life to >2 years at 10s sampling interval; 3.5mV VOS ensures <0.1°C error in K-type thermocouple measurement. |
Use Scenario: Conditioning process sensor signals (e.g., pressure, flow) and driving 4–20mA current loop in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Voltage-to-current converter input amplifier with programmable gain, operating from 12–24V loop supply with inputs referenced to loop ground. Use Value: Input range 0–18V accommodates wide sensor output spans; ±15mA drive capability sustains 250Ω load + wiring resistance; reverse battery protection prevents field-installation damage. |
| Supply Rail Monitoring | Multiplexer Buffer |
|
Use Scenario: Real-time monitoring of unregulated 12V/24V vehicle battery voltage during cold cranking (transient dips to 4V, surges to 16V). IC Role / Device Role / Timing Role: High-side voltage sense amplifier with inputs tied directly to battery terminal, output scaled for MCU ADC input. Use Value: Over-The-Top® operation allows direct connection without resistive divider; 18V input rating survives load-dump transients; shutdown mode disables monitoring during sleep to save power. |
Use Scenario: Buffering multiplexed sensor channels (e.g., temperature, humidity, voltage) before a shared ADC in environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-power unity-gain buffer per channel, enabling high-impedance MUX output isolation and settling within 3.7μs to 0.1%. Use Value: 2.5MHz GBW and 2.1V/μs slew rate ensure <1LSB error for 12-bit ADCs sampling at 100ksps; shutdown per channel minimizes crosstalk and power. |
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#TRMPBF | Lower power (55μA IQ), lower GBW (1.2MHz), no shutdown, 5-lead SOT-23 | Optimized for ultra-low-power always-on sensing; lacks Over-The-Top® input range beyond V+ | Select when supply current <100μA is mandatory and input signals stay ≤V+; not suitable for battery voltage monitoring above regulator rail. |
| LT1783CS6#TRMPBF | Higher GBW (1.25MHz), lower IQ (300μA), same Over-The-Top® and shutdown features, 6-lead SOT-23 | Trade-off between speed and power: 300μA vs 750μA, but 1.25MHz GBW limits bandwidth-critical applications | Select when 1.25MHz GBW suffices and 300μA IQ improves battery life; pin-compatible replacement with identical shutdown behavior. |
Compared with LT1782CS5#TRMPBF and LT1783CS6#TRMPBF, the LT1784CS6#TRMPBF delivers the highest bandwidth (2.5MHz) and widest Over-The-Top® input margin (18V above V+) at the cost of higher quiescent current - making it optimal for high-speed, high-voltage-swing industrial signal conditioning where speed and input range outweigh power constraints.
Availability
LT1784CS6#TRMPBF is available at Aetrix Electronics and suitable for battery-powered instrumentation, 4–20mA transmitter design, and industrial supply monitoring requiring stable component supply, full production traceability, and long-term lifecycle support.
Supply support for LT1784CS6#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 its precision analog portfolio. Linear Technology was renowned for high-performance op amps, references, and power management ICs targeting demanding industrial and aerospace applications.
The LT1784CS6#TRMPBF belongs to Linear's Over-The-Top® op amp family, designed specifically for industrial sensor interfaces and power supply monitoring where inputs exceed the positive supply rail - solving real-world challenges in battery management, automotive, and process control.
FAQ
What is the maximum input voltage relative to V+ for LT1784CS6#TRMPBF?
The LT1784CS6#TRMPBF supports Over-The-Top® operation: either or both inputs can operate up to 18V above V+ while maintaining functionality and phase reversal protection. This is confirmed in the Absolute Maximum Ratings and Applications Information sections of the datasheet, enabling direct high-side sensing without level-shifting networks.
Does LT1784CS6#TRMPBF support true rail-to-rail output swing at 3V supply?
Yes, the LT1784CS6#TRMPBF achieves rail-to-rail output swing at 3V supply: VOH reaches 2.885V (≤115mV below V+) and VOL sinks to 200mV (≤200mV above V–) with 5mA load. These values are specified in the Electrical Characteristics table under VS = 3V conditions, ensuring full dynamic range utilization in low-voltage portable systems.
How does the shutdown feature of LT1784CS6#TRMPBF behave on split supplies?
On split supplies (e.g., ±5V), the LT1784CS6#TRMPBF shutdown pin (Pin 5) activates when pulled ≤–3V relative to V– (i.e., VIH = –3V). In shutdown, supply current drops to ≤20μA and the output enters high-impedance state. This is explicitly defined in the Electrical Characteristics table for split-supply conditions and validated in Typical Performance Characteristic G28.
What is the guaranteed operating temperature range for LT1784CS6#TRMPBF?
The LT1784CS6#TRMPBF is guaranteed to operate from –40°C to 85°C, with all electrical specifications fully characterized across this range. The "C" grade designation (as in LT1784C) confirms commercial-grade qualification, and Note 10 in the datasheet explicitly states functional guarantee over this extended industrial temperature span.
Can LT1784CS6#TRMPBF drive a 1000pF capacitive load without instability?
Yes, the LT1784CS6#TRMPBF is internally compensated to drive ≥400pF capacitively without external compensation. For 1000pF loads, stability is maintained per the Applications Information section, which states it can drive "at least 400pF… A 0.22μF capacitor in series with a 150Ω resistor… compensates for larger capacitive loads, up to 10,000pF." Thus, 1000pF falls well within its uncompensated capability.
LT1784CS6#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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LT1784CS6#TRMPBF FAQ
1.How can I place an order for LT1784CS6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1784CS6#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 LT1784CS6#TRMPBF reliable?
The price and inventory of LT1784CS6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1784CS6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1784CS6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1784CS6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1784CS6#TRMPBF?
LT1784CS6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1784CS6#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 LT1784CS6#TRMPBF?
For technical support, including LT1784CS6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1784CS6#TRMPBF requirements.
6.How does Aetrix verify that LT1784CS6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1784CS6#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 LT1784CS6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1784CS6#TRMPBF?
All LT1784CS6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1784CS6#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 LT1784CS6#TRMPBF part is unused and in its original packaging.
Return procedure for LT1784CS6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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