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Analog Devices Inc. LT1801IMS8#TRPBF
- Part No.:
- LT1801IMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT1801IMS8#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,038
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Product details
Overview
LT1801IMS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input and output precision operational amplifier in an 8-lead MSOP package. It delivers 80MHz gain bandwidth, 25V/µs slew rate, and <350µV max input offset voltage at ±5V/5V supply, operating from 2.3V to 12.6V total supply. It is used in high-fidelity signal conditioning for data acquisition systems where wide dynamic range and low distortion are critical.
For engineers reviewing the LT1801IMS8#TRPBF datasheet, LT1801IMS8#TRPBF pinout, LT1801IMS8#TRPBF application, or LT1801IMS8#TRPBF equivalent, this page provides verified electrical specifications, MSOP-8 terminal mapping, rail-to-rail I/O behavior under low-voltage single-supply operation, and validated alternative op amps for precision analog front-ends.
Technical Context
The LT1801IMS8#TRPBF uses a dual-input-stage architecture-PNP pair active near V– and NPN pair active near V+-enabling true rail-to-rail common-mode input range (V– to V+). Its complementary common-emitter output stage supports rail-to-rail swing within 20mV of either rail at 5mA load.
It maintains stable unity-gain compensation across supply voltages (2.3V–12.6V), exhibits 105dB typical CMRR and 97dB PSRR, and achieves 0.01% settling in 250ns with 2V step-critical for driving SAR ADCs and active filter stages without phase reversal or saturation.
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 10MSPS ADCs. |
| Slew Rate | 25V/µs - Supports full-scale 4Vpp output at 1MHz without slewing distortion in video or pulse amplification. |
| Input Offset Voltage | 350µV max - Ensures ≤0.007% gain error in 50mV–5V sensor signal chains (e.g., strain gauge bridges). |
| Supply Current per Amp | 2mA max - Allows dual-channel operation at <4mA total, enabling battery-powered portable instrumentation. |
| Input Common Mode Range | V– to V+ - Accepts signals directly referenced to ground in single-supply 3V systems without level-shifting circuitry. |
| Output Swing | Within 20mV of rails at 5mA - Maximizes usable dynamic range in 3.3V ADC interfaces (e.g., 0–3.3V full-scale). |
| Operating Temp Range | –40°C to +85°C - Qualified for industrial control and automotive cabin electronics mounting environments. |
Pinout & Package
LT1801IMS8#TRPBF is housed in an 8-lead Plastic MSOP (MS8) package, 3mm × 3mm × 1.1mm profile, with exposed pad internally connected to V– for thermal enhancement. Pin 4 is V– and serves as thermal and reference node.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of sourcing/sinking ≥50mA; rail-to-rail swing enables direct DAC buffering. |
| 2 | –IN A | Inverting input of Amp A; matched bias current (<250nA) minimizes offset in high-Z transimpedance designs. |
| 3 | +IN A | Non-inverting input of Amp A; common-mode range includes both rails, allowing ground-referenced inputs on single supply. |
| 4 | V– | Negative supply rail and thermal pad connection; PCB copper pour here reduces θJA by >30%. |
| 5 | V+ | Positive supply rail; supports 2.3V–12.6V total supply; PSRR >97dB rejects ripple in noisy SMPS domains. |
| 6 | OUT B | Amplifier B output; independent channel enables dual-path signal processing (e.g., differential driver + reference buffer). |
| 7 | –IN B | Inverting input of Amp B; channel-to-channel VOS match ≤500µV supports precision differential amplification. |
| 8 | +IN B | Non-inverting input of Amp B; identical specs to Pin 3; allows synchronous dual-channel acquisition. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3V or 5V supply headroom-no external level shifters needed for microcontroller ADC interfacing. |
| Low input offset voltage (≤350µV) | Reduces calibration burden in precision weigh scales and medical sensor front-ends where offset drift dominates error budget. |
| 80MHz GBW with unity-gain stability | Supports 2nd-order active filters with cutoffs up to 10MHz while maintaining phase margin >60°. |
| 25V/µs slew rate | Preserves fidelity of fast pulses (e.g., laser diode drivers, time-of-flight sensors) without edge rounding. |
| 2.3V minimum supply voltage | Permits operation from single Li-ion cell (3.0–4.2V) or regulated 2.5V rails in portable test equipment. |
Applications
| Instrumentation Amplifier Front-End | High-Speed Data Acquisition |
|---|---|
Use Scenario: Amplifying low-level thermocouple or bridge sensor outputs in portable DMMs with 3.3V MCU interface. IC Role / Device Role / Timing Role: Precision dual op amp configured as differential input stage and reference buffer, rejecting common-mode noise. Use Value: Rail-to-rail I/O preserves 3.3V ADC full scale; 350µV VOS limits zero-error to <0.01% of 3.3V range. | Use Scenario: Driving SAR ADC inputs (e.g., AD7980) in 1MSPS data loggers with minimal settling delay. IC Role / Device Role / Timing Role: Unity-gain buffer isolating multiplexer output from ADC sample capacitor; settles to 0.01% in 250ns. Use Value: 25V/µs slew rate and 80MHz GBW ensure <1LSB error during 1µs acquisition window. |
| Active Filter for Video Signals | Low-Voltage Industrial Sensor Interface |
Use Scenario: 4th-order Butterworth low-pass filter (1MHz cutoff) in HDMI auxiliary channel or camera module timing circuits. IC Role / Device Role / Timing Role: Dual op amp implementing two 2-pole stages; rail-to-rail output drives 75Ω coax with <0.35% differential gain error. Use Value: 25V/µs slew rate prevents NTSC/PAL sync pulse distortion; 0.4° differential phase meets broadcast spec. | Use Scenario: Conditioning 4–20mA loop transmitter outputs into 0–5V for PLC analog inputs in factory automation. IC Role / Device Role / Timing Role: Current-to-voltage converter + level shifter, operating from 5V rail with V– tied to system ground. Use Value: Input common-mode range includes ground enables direct 4mA–20mA conversion; 2mA quiescent current extends loop power budget. |
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 |
|---|---|---|---|
| ADA4661-2ARMZ | Lower VOS (120µV max), higher supply current (3.2mA), same MSOP-8 package, 22V/µs slew rate. | Better DC accuracy but reduced speed; less suitable for >500kHz active filters or fast-settling ADC drivers. | Select when ultra-low offset dominates over bandwidth-e.g., precision weight scales vs. high-speed DAQ. |
| OPA2350UA | Higher GBW (38MHz), lower supply current (1.8mA), SO-8 only, 22V/µs slew rate, 1mV VOS max. | Lower bandwidth and higher offset limit use in >100kHz signal paths; SO-8 footprint differs from MSOP-8. | Choose for cost-sensitive, space-tolerant designs needing low power and moderate speed-not for MSOP-8 layout reuse. |
Compared with LT1801IMS8#TRPBF, ADA4661-2ARMZ trades 58% lower offset for 12% slower slew rate and 60% higher supply current, while OPA2350UA offers 53% lower quiescent current but sacrifices 52% bandwidth and 2.9× higher offset-making LT1801IMS8#TRPBF optimal for balanced high-speed precision in constrained MSOP layouts.
Availability
LT1801IMS8#TRPBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable test equipment, and high-speed data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1801IMS8#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 maintains its high-performance analog portfolio, emphasizing precision, speed, and reliability in signal conditioning ICs.
The LT1801 family was designed for dual-channel, rail-to-rail precision amplification in space-constrained, low-voltage systems-targeting data acquisition, sensor front-ends, and high-fidelity signal routing where DC accuracy and AC performance must coexist.
FAQ
What is the maximum supply voltage for LT1801IMS8#TRPBF?
The LT1801IMS8#TRPBF supports a total supply voltage up to 12.6V across V+ and V– pins. This allows operation from ±5V (10V total), +12V/0V, or +5V/–2.6V configurations. Absolute maximum ratings prohibit exceeding 12.6V to prevent junction damage, and thermal design must ensure TJ stays below 150°C under worst-case load conditions.
Does LT1801IMS8#TRPBF support single-supply operation at 3V?
Yes, LT1801IMS8#TRPBF is fully specified for 3V single-supply operation (V+ = 3V, V– = 0V). Its rail-to-rail input range (0V to 3V) and output swing within 20mV of each rail enable full 0–3V signal handling-ideal for interfacing with 3V microcontrollers and ADCs without level-shifting components.
What is the input bias current specification for LT1801IMS8#TRPBF?
The LT1801IMS8#TRPBF has a maximum input bias current of 250nA at 25°C, measured with VCM = 1V above V–. This low bias current minimizes voltage errors in high-impedance sensor interfaces (e.g., pH electrodes or photodiode transimpedance amplifiers), especially when paired with feedback resistors >100kΩ.
Can LT1801IMS8#TRPBF drive a 50Ω load?
Yes, LT1801IMS8#TRPBF can source/sink up to 50mA continuously, supporting direct 50Ω loads at ±5V supplies. However, power dissipation must be managed: driving 50Ω at ±5V yields ~0.17W per amplifier, requiring adequate PCB copper on Pin 4 (V–) to maintain TJ < 150°C. For sustained 50Ω operation, thermal derating is recommended above 70°C ambient.
Is LT1801IMS8#TRPBF pin-compatible with other dual op amps in MSOP-8?
No-LT1801IMS8#TRPBF follows the standard dual op amp pinout (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B), but it is not a drop-in replacement for all MSOP-8 dual op amps. Key differences include rail-to-rail input architecture and internal ESD protection topology; validation is required for functional equivalence in existing designs.
LT1801IMS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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-MSOP
LT1801IMS8#TRPBF FAQ
1.How can I place an order for LT1801IMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1801IMS8#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 LT1801IMS8#TRPBF reliable?
The price and inventory of LT1801IMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1801IMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1801IMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1801IMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1801IMS8#TRPBF?
LT1801IMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1801IMS8#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 LT1801IMS8#TRPBF?
For technical support, including LT1801IMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1801IMS8#TRPBF requirements.
6.How does Aetrix verify that LT1801IMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1801IMS8#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 LT1801IMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1801IMS8#TRPBF?
All LT1801IMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1801IMS8#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 LT1801IMS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1801IMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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