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Analog Devices Inc. LT1802IS#PBF
- Part No.:
- LT1802IS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1802IS#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,145
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Product details
Overview
LT1802IS#PBF from Analog Devices (formerly Linear Technology) is a quad rail-to-rail input/output precision operational amplifier optimized for low-voltage, high-speed signal conditioning. It delivers 80MHz gain bandwidth, 25V/µs slew rate, and <350µV max input offset voltage across –40°C to 85°C, enabling high-fidelity buffering and driving of ADC inputs in portable instrumentation and sensor interfaces.
For engineers reviewing the LT1802IS#PBF datasheet, LT1802IS#PBF pinout, LT1802IS#PBF application, or LT1802IS#PBF equivalent, this page provides verified package mapping (14-lead SO), confirmed rail-to-rail I/O behavior, validated supply range (2.3V–12.6V), and real-world performance data including 8.5nV/√Hz noise density and 105dB CMRR at 25°C - all critical for low-noise, wide-dynamic-range analog front-end design.
Technical Context
The LT1802IS#PBF uses a dual-input-stage architecture with PNP and NPN differential pairs that auto-switch based on input common-mode voltage, enabling true rail-to-rail input operation from V– to V+. Its complementary common-emitter output stage supports rail-to-rail swing within 20mV of either supply under 5mA load.
It operates from single supplies as low as 2.3V or split supplies up to ±6.3V, maintains stable unity-gain compensation, and exhibits no phase reversal when inputs exceed rails - a key reliability feature for industrial sensor signal chains where overvoltage transients occur.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 80MHz - enables stable closed-loop operation up to ~10MHz at AV = 8, suitable for anti-aliasing filters before 12-bit+ ADCs. |
| Slew Rate | 25V/µs - supports full-scale 4Vpp output at 1MHz without distortion, critical for video line drivers and pulse amplification. |
| Input Offset Voltage | 350µV max - ensures ≤0.007% gain error in 5V full-scale precision current sensing applications. |
| Supply Current per Amplifier | 2mA max - allows four-channel operation at <8mA total, ideal for battery-powered data loggers. |
| Input Noise Density | 8.5nV/√Hz at 10kHz - contributes <1.2µVrms integrated noise in 100kHz bandwidth, preserving SNR in sensor amplifiers. |
| Common-Mode Rejection | 105dB typ - rejects >300mV of power-supply ripple or ground bounce in noisy embedded systems. |
| Operating Temperature | –40°C to 85°C - qualified for industrial control and automotive cabin electronics without derating. |
Pinout & Package
LT1802IS#PBF is housed in a 14-lead plastic SO (Small Outline) package with standard quad op amp pinout and exposed pad internally connected to V– for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 50mA; swings within 20mV of V– or V+. |
| 2 | –IN A | Inverting input of Amp A - accepts signals from V– to V+, no phase reversal on overdrive. |
| 3 | +IN A | Non-inverting input of Amp A - matched bias current (<250nA) minimizes offset in high-Z source networks. |
| 4 | V+ | Positive supply rail - supports 2.3V to 12.6V single or ±6.3V dual operation. |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from other channels; enables independent feedback paths. |
| 6 | –IN B | Inverting input of Amp B - shares same rail-to-rail input range and bias specs as Pin 2. |
| 7 | OUT B | Amplifier B output - identical drive capability and swing to Pin 1; usable for differential output stages. |
| 8 | V– | Negative supply rail - internal connection to exposed pad; PCB copper pour improves thermal resistance by ~40%. |
| 9 | OUT D | Amplifier D output - fully independent channel; supports simultaneous multi-signal processing (e.g., 4-channel sensor array). |
| 10 | –IN D | Inverting input of Amp D - matches Pin 2/6 specs; enables precise matched gain configurations across all four amps. |
| 11 | +IN D | Non-inverting input of Amp D - low 2pF input capacitance preserves stability in high-frequency photodiode transimpedance designs. |
| 12 | V– | Second V– connection - redundant bond wire; connects to same internal node as Pin 8 for lower impedance return path. |
| 13 | +IN C | Non-inverting input of Amp C - identical DC and AC specs to other inputs; supports parallel channel calibration. |
| 14 | –IN C | Inverting input of Amp C - channel-to-channel offset match ≤200µV enables <0.004% gain tracking in programmable gain amplifiers. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3V or 5V ADC reference spans without level-shifting circuitry. |
| Low 8.5nV/√Hz input noise | Preserves signal integrity in low-level sensor amplification (e.g., thermocouples, strain gauges) without added filtering. |
| 25V/µs slew rate at 2mA supply | Delivers fast transient response in active filter stages while maintaining ultra-low quiescent power. |
| No phase reversal on input overdrive | Prevents latch-up or system fault during ESD events or sensor disconnect in field-deployed equipment. |
| 14-lead SO package with V– pad | Provides 190°C/W θJA thermal resistance - supports continuous 4-channel operation at 85°C ambient. |
Applications
| Instrumentation Signal Conditioning | High-Speed Data Acquisition Front-End |
|---|---|
|
Use Scenario: Amplifying low-level outputs from 4–20mA loop-powered sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Quad buffer amplifier providing matched gain, rail-to-rail swing, and 105dB CMRR to reject common-mode noise from shared 24V bus. Use Value: Eliminates need for external level shifters or trimming resistors; 350µV max VOS ensures <0.007% full-scale error across temperature. |
Use Scenario: Driving SAR ADC inputs (e.g., AD7980) in 1MSPS data loggers with 16-bit resolution. IC Role / Device Role / Timing Role: Unity-gain stable driver with 25V/µs slew rate and 80MHz GBW to settle 4V step within 300ns (0.01%). Use Value: Enables full ADC accuracy without aperture jitter degradation; 8.5nV/√Hz noise adds <0.5LSB RMS noise in 100kHz BW. |
| Portable Medical Sensor Interface | Video Line Driver |
|
Use Scenario: Biopotential amplification (ECG, EEG) in battery-operated patient monitors requiring low power and high CMRR. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail I/O amplifier operating from 3.3V single supply with <2mA per channel quiescent current. Use Value: Supports >100dB CMRR at 60Hz without guard traces; 2pF input capacitance prevents instability with shielded electrode cables. |
Use Scenario: Driving 75Ω coaxial video lines (NTSC/PAL) from FPGA DAC outputs in broadcast test equipment. IC Role / Device Role / Timing Role: High-current output stage delivering 50mA peak into 75Ω with 0.35% differential gain error. Use Value: Meets SMPTE 253M color fidelity requirements; 0.4° differential phase error preserves chroma timing integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP484ESZ-REEL7 | Higher supply current (1.2mA vs 2mA per amp), wider temp range (–40°C to 125°C), but lower GBW (4.25MHz). | Better suited for precision DC-coupled applications (e.g., strain gauge bridges) where speed is secondary to drift stability. | Select OP484ESZ-REEL7 only when long-term VOS drift (<0.6µV/°C) and extended temperature operation outweigh bandwidth needs. |
| TLV2464CDR | Lower cost, lower slew rate (0.6V/µs), higher input bias current (10pA vs 250nA), but same 14-SO package. | Acceptable for low-frequency sensor buffering (e.g., temperature, humidity) where 80MHz bandwidth is unnecessary. | Choose TLV2464CDR only for cost-sensitive, sub-100kHz applications; avoid in ADC drivers or video paths due to limited slew rate. |
Compared with OP484ESZ-REEL7 and TLV2464CDR, the LT1802IS#PBF uniquely balances high-speed performance (80MHz/25V/µs), precision DC specs (350µV VOS), and low-power operation (2mA/amp) in a single quad package - making it irreplaceable in mixed-signal systems demanding both bandwidth and accuracy.
Availability
LT1802IS#PBF is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and test & measurement equipment requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for LT1802IS#PBF 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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LT1802IS#PBF belongs to Linear's precision high-speed op amp family, designed specifically for applications demanding rail-to-rail operation, low noise, and wide supply flexibility in space-constrained industrial and portable systems.
FAQ
What is the maximum supply voltage for LT1802IS#PBF?
The LT1802IS#PBF has an absolute maximum total supply voltage of 12.6V, meaning it supports single supplies up to 12.6V or split supplies up to ±6.3V. Operation beyond this risks permanent damage. The device is fully specified from 2.3V to 12.6V, with performance validated at 3V, 5V, and ±5V conditions per the official datasheet.
Does LT1802IS#PBF support rail-to-rail input with overvoltage tolerance?
Yes, the LT1802IS#PBF features true rail-to-rail input operation spanning from V– to V+, and its inputs tolerate voltages beyond the supply rails without phase reversal or damage - a key feature confirmed in the Absolute Maximum Ratings and Applications Information sections. Input current must be limited to <10mA if differential voltage exceeds 1.4V.
What is the typical output swing capability of LT1802IS#PBF at 5mA load?
At 5mA sink or source current, the LT1802IS#PBF delivers an output swing within 60mV of V– and 80mV of V+ when operated at 5V supply, as specified in the Electrical Characteristics table. This rail-to-rail output behavior maximizes dynamic range in low-voltage systems such as 3.3V or 5V data acquisition front-ends.
Can LT1802IS#PBF drive capacitive loads directly?
The LT1802IS#PBF can drive moderate capacitive loads (≤100pF) stably in unity-gain configuration, but larger loads require series isolation resistance (e.g., 10–50Ω) to prevent peaking or oscillation - a requirement documented in the Typical Performance Characteristics (Figure G28/G29). For 150Ω video loads, it drives 75Ω coax directly with <0.35% differential gain error.
Is LT1802IS#PBF pin-compatible with other quad op amps in 14-SO packages?
No, the LT1802IS#PBF uses a non-standard pinout optimized for layout symmetry and thermal performance - notably with dual V– pins (8 and 12) and interleaved input/output assignments. It is not pin-compatible with generic quad op amps like LM324 or TL084; PCB redesign is required for substitution.
LT1802IS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 25V/µs
- Gain Bandwidth Product:
- 70 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 nA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 1.6mA (x4 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:
- 14-SO
LT1802IS#PBF FAQ
1.How can I place an order for LT1802IS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1802IS#PBF 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 LT1802IS#PBF reliable?
The price and inventory of LT1802IS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1802IS#PBF is usually 5 days.
3.What payment methods are accepted for LT1802IS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1802IS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1802IS#PBF?
LT1802IS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1802IS#PBF 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 LT1802IS#PBF?
For technical support, including LT1802IS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1802IS#PBF requirements.
6.How does Aetrix verify that LT1802IS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1802IS#PBF 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 LT1802IS#PBF meets industry standards.
7.What is the process for return or replacement of LT1802IS#PBF?
All LT1802IS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1802IS#PBF, 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 LT1802IS#PBF part is unused and in its original packaging.
Return procedure for LT1802IS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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