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Analog Devices Inc. LT1801IS8#TRPBF
- Part No.:
- LT1801IS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1801IS8#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,687
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Product details
Overview
LT1801IS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual rail-to-rail input/output precision operational amplifier in an 8-lead SO package, rated for –40°C to 85°C operation. It delivers 80MHz gain bandwidth, 25V/µs slew rate, <350µV max input offset voltage, and 2mA/amplifier quiescent current - enabling high-fidelity signal conditioning in low-voltage, space-constrained industrial sensor interfaces and data acquisition front-ends.
For engineers reviewing the LT1801IS8#TRPBF datasheet, LT1801IS8#TRPBF pinout, LT1801IS8#TRPBF application, or LT1801IS8#TRPBF equivalent, this page provides verified electrical specifications, SO-8 terminal mapping, rail-to-rail dynamic range validation, and direct alternatives for precision op amp replacement in ±5V or single-supply 3V–12.6V systems.
Technical Context
The LT1801IS8#TRPBF integrates dual complementary bipolar input stages (PNP active near V–, NPN active near V+) to achieve true rail-to-rail common-mode input range (V– to V+). Its output stage uses complementary common-emitter transistors to deliver rail-to-rail swing within 20mV of either supply under 5mA load.
It operates across 2.3V to 12.6V total supply range (single or split), maintains >105dB CMRR and >97dB PSRR at DC, and exhibits 8.5nV/√Hz input voltage noise at 10kHz - confirming suitability for low-noise, wide-bandwidth analog signal chains where DC accuracy and AC fidelity are co-required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 80MHz - supports stable unity-gain buffer or closed-loop gain ≥2 up to 40MHz without phase margin erosion. |
| Slew Rate | 25V/µs - enables full-scale 4Vpp output at 1MHz with <0.1% distortion in driving ADC inputs. |
| Input Offset Voltage | ≤350µV max - ensures ≤0.007% gain error in 5V full-scale instrumentation amplifiers. |
| Supply Current per Amplifier | 2mA max - allows dual-channel precision amplification in battery-powered IoT nodes with <4mA total quiescent draw. |
| Input Common Mode Range | V– to V+ - eliminates level-shifting circuitry when interfacing with 0–3.3V sensors or DACs on 3.3V supplies. |
| Output Swing | Within 20mV of rails at light load - maximizes dynamic range in 3V systems, delivering >2.96Vpp usable signal swing. |
| Operating Temperature | –40°C to 85°C - qualified for industrial control, motor feedback, and automotive cabin electronics. |
Pinout & Package
LT1801IS8#TRPBF is housed in an 8-lead plastic SO (Small Outline) package, 5.0mm × 4.0mm × 1.5mm body, with standard dual op amp pinout and gull-wing leads. Exposed pad is not present; thermal resistance θJA = 190°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 50mA; rail-to-rail swing enables direct connection to SAR ADC reference buffers. |
| 2 | –IN A | Inverting input of Amp A - high-impedance node; bias current <250nA minimizes error in high-Z sensor interfaces. |
| 3 | +IN A | Non-inverting input of Amp A - matched to Pin 2 for <650µV channel-to-channel offset matching. |
| 4 | V– | Negative supply rail - internally connected to exposed pad in MS8/DD variants; not exposed in SO-8. |
| 5 | V+ | Positive supply rail - accepts 2.3V–12.6V total supply; PSRR >97dB suppresses supply ripple in noisy environments. |
| 6 | OUT B | Amplifier B output - independent channel; enables dual-path signal conditioning without cross-talk. |
| 7 | –IN B | Inverting input of Amp B - identical specs to Pin 2; supports differential pair configurations with matched gain. |
| 8 | +IN B | Non-inverting input of Amp B - completes dual op amp topology; pin-compatible with industry-standard SO-8 dual op amps. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with 0–3.3V/0–5V logic and ADCs without external level shifters or clamping diodes. |
| Low input offset voltage drift | 1.5µV/°C max - maintains <1.2mV offset shift over –40°C to 85°C, critical for uncalibrated temperature sensor front-ends. |
| High open-loop gain | 85V/mV typ - ensures <0.001% gain error in closed-loop gains up to 100, supporting precision transimpedance designs. |
| Low input noise density | 8.5nV/√Hz at 10kHz - preserves SNR in audio preamps and medical ECG signal paths above 1kHz. |
| Robust input overvoltage tolerance | Inputs withstand >±10mA transient current without phase reversal - protects against sensor cable ESD events. |
Applications
| Industrial Sensor Signal Conditioning | High-Speed Data Acquisition Front-End |
|---|---|
Use Scenario: Amplifying low-level mV outputs from RTD, thermocouple, or strain gauge bridges in PLC analog input modules. IC Role / Device Role / Timing Role: Precision dual-channel instrumentation amplifier core with rail-to-rail output driving 16-bit SAR ADC reference inputs. Use Value: 350µV max VOS and 25V/µs slew rate enable sub-0.01% linearity over 0–5V full scale without calibration. | Use Scenario: Buffering and anti-alias filtering before high-speed ADCs sampling at 1–10MSPS in test equipment. IC Role / Device Role / Timing Role: Unity-gain stable driver with 80MHz GBW and 25V/µs slew rate preserving fast edge integrity. Use Value: Full-power bandwidth of 2MHz at 4Vpp output ensures minimal settling error (<250ns to 0.01%) in multi-channel DAQ systems. |
| Rail-to-Rail Active Filter Stage | Video Line Driver (SD/HD) |
Use Scenario: Implementing 4th-order Butterworth low-pass filters in portable medical monitors with 3.3V supplies. IC Role / Device Role / Timing Role: Dual op amp configured as 2-pole Sallen-Key sections; rail-to-rail I/O maximizes filter dynamic range. Use Value: Input common-mode range spanning V– to V+ eliminates DC blocking capacitors, reducing component count and board area. | Use Scenario: Driving 75Ω coaxial video lines in security DVRs or broadcast monitoring gear with NTSC/PAL signals. IC Role / Device Role / Timing Role: High-current output buffer with 0.35% differential gain and 0.4° differential phase error. Use Value: 50mA short-circuit current and 20mV rail headroom ensure 2Vpp video swing into 75Ω with <0.5% distortion at 5MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Zero-drift architecture; 0.02µV/°C offset drift vs. 1.5µV/°C for LT1801IS8#TRPBF; lower 1/f noise but 350kHz GBW. | Better for ultra-low-drift DC applications (e.g., weigh scales); unsuitable for >500kHz signal paths requiring 80MHz GBW. | Select OPA2333AIDR only when long-term DC stability outweighs bandwidth needs. |
| AD8642ARZ | FEMTOamp input bias (1pA typ); 24MHz GBW; 12V/µs slew rate; higher 12nV/√Hz noise than LT1801IS8#TRPBF's 8.5nV/√Hz. | Preferred for picoamp-level photodiode transimpedance; insufficient slew rate for 1MHz+ video or fast-settling DAQ. | Choose AD8642ARZ for ultra-high-impedance sensor interfaces, not high-speed precision buffering. |
Compared with OPA2333AIDR and AD8642ARZ, the LT1801IS8#TRPBF uniquely balances 80MHz bandwidth, 25V/µs slew rate, rail-to-rail I/O, and <350µV offset in a cost-optimized SO-8 package - making it optimal for industrial DAQ, active filtering, and video line driving where speed and DC precision coexist.
Availability
LT1801IS8#TRPBF is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, high-speed data acquisition front-ends, and rail-to-rail active filter stages requiring stable component supply across extended temperature ranges.
Supply support for LT1801IS8#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 and continues its legacy of high-performance analog ICs, emphasizing precision, speed, and reliability in signal chain components.
The LT1801 product line was designed for dual-channel, low-power, high-speed precision amplification in industrial, medical, and communications systems demanding rail-to-rail operation and robust DC specs.
FAQ
What is the maximum supply voltage for LT1801IS8#TRPBF?
The LT1801IS8#TRPBF supports a total supply voltage of up to 12.6V across V+ and V– pins. Absolute maximum ratings specify ±12.6V for split supplies or 12.6V for single-ended operation. Operation beyond this risks permanent damage, and the device is fully specified from 2.3V to 12.6V total supply range.
Does LT1801IS8#TRPBF support rail-to-rail input with single-supply operation?
Yes, the LT1801IS8#TRPBF features true rail-to-rail input common-mode range from V– to V+, confirmed across all supply conditions including single 3V, 5V, and 12V operation. This allows direct interfacing with sensors or DACs referenced to ground without level-shifting circuitry.
What is the typical output drive capability of LT1801IS8#TRPBF?
The LT1801IS8#TRPBF delivers ±50mA typical short-circuit output current and sustains rail-to-rail swing within 20mV of V+ or V– at 5mA load. At 20mA sink/source, output swing degrades to ~225mV from rails - sufficient for driving 75Ω video lines or 1kΩ ADC input networks.
Is LT1801IS8#TRPBF pin-compatible with other dual op amps in SO-8 packages?
Yes, the LT1801IS8#TRPBF uses the industry-standard dual op amp pinout for SO-8: Pins 1/6 = OUT A/B, 2/7 = –IN A/B, 3/8 = +IN A/B, 4 = V–, 5 = V+. It is a direct drop-in replacement for LM358, TL072, and AD8602 in most PCB layouts, though performance exceeds those parts significantly.
What is the operating temperature grade of LT1801IS8#TRPBF?
The "I" suffix in LT1801IS8#TRPBF denotes the industrial temperature grade, guaranteed to operate from –40°C to +85°C. All electrical specifications in the datasheet apply across this full range, unlike commercial-grade "C" variants tested only from 0°C to 70°C.
LT1801IS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 25V/µs
- Gain Bandwidth Product:
- 80 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 nA
- Voltage - Input Offset:
- 75 µV
- Current - Supply:
- 1.6mA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.3 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1801IS8#TRPBF FAQ
1.How can I place an order for LT1801IS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1801IS8#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 LT1801IS8#TRPBF reliable?
The price and inventory of LT1801IS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1801IS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1801IS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1801IS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1801IS8#TRPBF?
LT1801IS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1801IS8#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 LT1801IS8#TRPBF?
For technical support, including LT1801IS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1801IS8#TRPBF requirements.
6.How does Aetrix verify that LT1801IS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1801IS8#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 LT1801IS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1801IS8#TRPBF?
All LT1801IS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1801IS8#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 LT1801IS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1801IS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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