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Analog Devices Inc. LT1801CMS8#TRPBF
- Part No.:
- LT1801CMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT1801CMS8#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,126
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Product details
Overview
LT1801CMS8#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 supply, enabling high-fidelity signal conditioning in low-voltage data acquisition systems.
For engineers reviewing the LT1801CMS8#TRPBF datasheet, LT1801CMS8#TRPBF pinout, LT1801CMS8#TRPBF application, or LT1801CMS8#TRPBF equivalent, key selection criteria include rail-to-rail swing within 20mV of rails at 3V–12.6V supplies, 2mA/amplifier quiescent current, and verified performance across –40°C to 85°C industrial temperature range.
Technical Context
The LT1801CMS8#TRPBF uses a dual-input-stage architecture-PNP pair active from V– to ~1.2V below V+, NPN pair active near V+-enabling full rail-to-rail common-mode input range (0V to VS). Its complementary common-emitter output stage achieves rail-to-rail output swing with 50mA typical short-circuit current capability.
It operates on single supplies from 2.3V to 12.6V or split supplies up to ±5V, with guaranteed DC performance (input offset drift ≤5µV/°C, CMRR ≥105dB typ, PSRR ≥97dB typ) and AC behavior (GBW = 80MHz, FPBW = 2MHz at 4VP-P) specified at 3V, 5V, and ±5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 80MHz - supports stable unity-gain buffers up to 80MHz or closed-loop gains of 10 at 8MHz. |
| Slew Rate | 25V/µs - enables clean 1VPP signals at >10MHz without slewing distortion. |
| Input Offset Voltage | 350µV max - ensures <0.1% error in 12-bit ADC front-ends with 2.5V reference. |
| Supply Current per Amplifier | 2mA max - allows dual-channel operation under 4.5mA total for battery-powered instrumentation. |
| Output Swing | Within 20mV of rails - maximizes dynamic range in 3.3V systems, delivering >3.26VPP output. |
| Common Mode Rejection | 105dB typ - suppresses >300µV of common-mode noise at 1V level in noisy industrial environments. |
| Operating Temperature | –40°C to +85°C - qualified for industrial control and automotive cabin electronics. |
Pinout & Package
LT1801CMS8#TRPBF is housed in an 8-lead plastic MSOP (MS8) package, 3mm × 3mm footprint, 0.85mm height, with exposed pad internally connected to V– (PCB connection optional for thermal enhancement).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Delivers rail-to-rail output; capable of sourcing/sinking 20mA while maintaining <250mV saturation. |
| 2 (–IN A) | Inverting input A | Differential node with 2pF input capacitance; bias current <250nA enables high-Z sensor interfacing. |
| 3 (+IN A) | Non-inverting input A | Matches –IN A in offset and bias; supports true rail-to-rail common-mode range (V– to V+). |
| 4 (V–) | Negative supply | Reference for both amplifiers; exposed pad tied internally-connect to ground plane for improved θJA. |
| 5 (V+) | Positive supply | Accepts 2.3V–12.6V single or ±5V split; PSRR ≥97dB minimizes supply ripple coupling. |
| 6 (OUT B) | Amplifier B output | Independent output with identical AC/DC specs; enables dual-path signal processing without crosstalk. |
| 7 (–IN B) | Inverting input B | Matched to –IN A (≤650µV offset match); supports differential pair configurations with tight tracking. |
| 8 (+IN B) | Non-inverting input B | Full rail-to-rail input stage; enables high-side sensing in 3V systems where VCM extends to V+. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3.3V or 5V supply rails-no headroom loss in ADC driver or sensor buffer stages. |
| Low input offset voltage (350µV max) | Reduces gain error in precision transimpedance amplifiers used with photodiodes or strain gauges. |
| 80MHz GBW with 25V/µs slew rate | Supports fast-settling active filters (e.g., 4th-order Butterworth at 1MHz) without phase lag or overshoot. |
| 2.3V to 12.6V supply range | Allows direct integration into mixed-voltage systems-e.g., 3.3V microcontroller I/O with 5V analog signal chain. |
| 105dB CMRR and 97dB PSRR | Ensures stable DC accuracy in motor drive feedback loops where PWM noise couples onto supply or ground. |
Applications
| Instrumentation Amplifier Front-End | High-Speed ADC Driver |
|---|---|
Use Scenario: Amplifying low-level thermocouple or bridge sensor outputs before digitization in portable test equipment. IC Role / Device Role / Timing Role: Dual op amp configured as precision difference amplifier and reference buffer. Use Value: Rail-to-rail input accepts sensor common-mode voltages near ground or VDD; 350µV offset ensures <0.014% error at 2.5V full scale. | Use Scenario: Driving SAR or sigma-delta ADC inputs with minimal settling time and distortion. IC Role / Device Role / Timing Role: Unity-gain buffer isolating ADC sample-and-hold from source impedance. Use Value: 250ns 0.01% settling time and –75dBc harmonic distortion at 500kHz enable 14-bit effective resolution. |
| Rail-to-Rail Video Line Driver | Active Filter for Signal Conditioning |
Use Scenario: Buffering composite video (NTSC/PAL) signals in embedded vision modules with 3.3V power rails. IC Role / Device Role / Timing Role: Single-supply video driver with DC-coupled output and 150Ω load termination. Use Value: 0.35% differential gain and 0.4° differential phase errors preserve color fidelity; 50mA output drives coaxial cable directly. | Use Scenario: Implementing 4th-order Butterworth low-pass filtering before audio CODEC or RF demodulator. IC Role / Device Role / Timing Role: Dual-amplifier Sallen-Key topology with matched internal components. Use Value: 80MHz GBW ensures flat passband response up to 1MHz; rail-to-rail swing maintains SNR across full filter output range. |
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 |
|---|---|---|---|
| AD8628ARMZ-REEL | Zero-drift architecture; 1µV max offset, but only 2.5MHz GBW and 1V/µs slew rate. | Better DC precision for µV-level sensor signals; unsuitable for >100kHz AC-coupled applications. | Select when ultra-low offset drift dominates over speed-e.g., precision weigh scales-not video or fast ADC drivers. |
| OPA2350UA/2K5 | 22V/µs slew rate, 38MHz GBW, 65µV max offset; SO-8 package, same pinout as LT1801CMS8#TRPBF. | Lower bandwidth and slew rate limit use in >500kHz signal paths; superior noise density (7nV/√Hz vs 8.5nV/√Hz). | Choose for lower-noise, moderate-speed applications where layout reuse is critical-same footprint, no PCB change required. |
Compared with AD8628ARMZ-REEL and OPA2350UA/2K5, the LT1801CMS8#TRPBF uniquely balances high-speed (80MHz/25V/µs), rail-to-rail operation, and industrial temperature rating in a compact MSOP-making it optimal for space-constrained, wide-bandwidth industrial signal chains where both AC fidelity and DC accuracy matter.
Availability
LT1801CMS8#TRPBF is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics equipment, and test & measurement instruments requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1801CMS8#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 for precision signal conditioning and power management.
The LT1801 product line was designed specifically for dual-channel, low-power, high-speed precision amplification in space- and power-constrained industrial and instrumentation systems.
FAQ
What is the maximum supply voltage for LT1801CMS8#TRPBF?
The LT1801CMS8#TRPBF supports a total supply voltage (V+ to V–) of up to 12.6V. This includes single-supply operation from 2.3V to 12.6V or split-supply configurations such as ±5V (10V total). Exceeding 12.6V risks permanent damage per Absolute Maximum Ratings.
Does LT1801CMS8#TRPBF support rail-to-rail input with a 3.3V supply?
Yes. The LT1801CMS8#TRPBF guarantees rail-to-rail input common-mode range (0V to VS) across its full supply range, including 3.3V operation. At 3.3V, inputs accept signals from ground to 3.3V, enabling direct interfacing with 3.3V logic or sensors without level-shifting.
What is the thermal resistance (θJA) of the MS8 package for LT1801CMS8#TRPBF?
The LT1801CMS8#TRPBF in the 8-lead MSOP (MS8) package has a typical junction-to-ambient thermal resistance (θJA) of 250°C/W with standard PCB layout. Connecting the exposed pad (internally tied to V–) to a larger copper area reduces θJA significantly-verified down to ~160°C/W with 1-in² ground plane.
Can LT1801CMS8#TRPBF drive a 50Ω load continuously?
The LT1801CMS8#TRPBF can source/sink up to 20mA while maintaining rail-to-rail swing (≤250mV saturation), supporting 50Ω loads at ≤2.5VPP output. For sustained 50Ω driving at higher amplitudes, heat dissipation must be managed-worst-case PDMAX exceeds 170mW per amplifier at ±5V, requiring thermal design consideration.
Is LT1801CMS8#TRPBF pin-compatible with other dual op amps in MSOP-8?
No. While the LT1801CMS8#TRPBF follows the industry-standard dual op amp pinout (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B), compatibility depends on electrical behavior-not just pin count. For example, OPA2350UA uses identical MSOP-8 pinout and is a functional drop-in alternative; however, generic MSOP-8 op amps may differ in biasing, shutdown, or enable functions.
LT1801CMS8#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
LT1801CMS8#TRPBF FAQ
1.How can I place an order for LT1801CMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1801CMS8#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 LT1801CMS8#TRPBF reliable?
The price and inventory of LT1801CMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1801CMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1801CMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1801CMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1801CMS8#TRPBF?
LT1801CMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1801CMS8#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 LT1801CMS8#TRPBF?
For technical support, including LT1801CMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1801CMS8#TRPBF requirements.
6.How does Aetrix verify that LT1801CMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1801CMS8#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 LT1801CMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1801CMS8#TRPBF?
All LT1801CMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1801CMS8#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 LT1801CMS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1801CMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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