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Analog Devices Inc. LT1211CS8#PBF
- Part No.:
- LT1211CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1211CS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,549
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Product details
Overview
LT1211CS8#PBF from Analog Devices (formerly Linear Technology) is a dual, single-supply precision operational amplifier featuring 14MHz gain-bandwidth product, 7V/µs slew rate, and 275µV max input offset voltage at 25°C. It operates from 2.5V to 36V total supply, supports rail-to-rail input down to ground, and delivers ±20mA output drive - ideal for high-accuracy signal conditioning in battery-powered instrumentation and 12-bit DAC interfaces.
For engineers reviewing the LT1211CS8#PBF datasheet, LT1211CS8#PBF pinout, LT1211CS8#PBF application, or LT1211CS8#PBF equivalent, key selection criteria include guaranteed 0.01% settling in 900ns (2V step), low 12nV/√Hz input noise, ±15V/5V/3.3V supply compatibility, and SO-8 package thermal resistance of 150°C/W.
Technical Context
The LT1211CS8#PBF integrates input bias current cancellation circuitry to achieve ≤125nA max input bias current and ≤30nA max input offset current, enabling high-impedance sensor interfacing without external trimming. Its internal compensation ensures stable unity-gain operation with ≥45° phase margin across –55°C to 125°C.
Designed for single-supply systems, it features true ground-sensing inputs and output swing to within 3mV of V– while sinking current - critical for low-voltage data acquisition where headroom is constrained. The device maintains 105dB CMRR and 115dB PSRR at 5V, supporting precision DC-coupled amplification in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 14MHz typical - enables stable closed-loop gain up to 100 at 140kHz with minimal phase lag. |
| Slew Rate | 7V/µs typical - supports clean 10Vpp output at 200kHz without slewing distortion. |
| Input Offset Voltage | 275µV max at 25°C - ensures ≤0.45LSB error in 2.5V full-scale 12-bit systems. |
| Supply Current per Amp | 1.8mA max - allows dual-channel operation on 5V supply with <3.6mA total quiescent draw. |
| Output Drive Current | ±20mA min - drives 500Ω loads to full swing while maintaining linearity. |
| Input Noise Density | 12nV/√Hz typical at 1kHz - preserves SNR in low-level transducer signal chains. |
| Common-Mode Range | Includes ground on single supply - eliminates level-shifting circuits in 0–5V sensor front-ends. |
Pinout & Package
LT1211CS8#PBF is housed in an 8-lead plastic SOIC (SO-8) package with standard JEDEC MS-012AC footprint, 1.27mm pitch, and 150°C/W junction-to-ambient thermal resistance in still air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Delivers buffered signal; capable of sourcing/sinking ±20mA into resistive loads. |
| 2 (–IN A) | Inverting input A | High-impedance node (≥10MΩ); accepts signals from 0.3V below V– to 3.8V below V+ at 5V supply. |
| 3 (+IN A) | Non-inverting input A | Matches –IN A characteristics; used for unity-gain buffers or differential sensing. |
| 4 (V–) | Negative supply rail | Reference for dual-supply operation or ground return in single-supply configurations. |
| 5 (V+) | Positive supply rail | Accepts 2.5V–36V total supply; requires 0.01µF bypass capacitor within 25mm. |
| 6 (OUT B) | Amplifier B output | Independent output channel; identical performance to OUT A with >128dB channel separation. |
| 7 (–IN B) | Inverting input B | Electrically isolated from –IN A; enables dual-channel signal processing without crosstalk. |
| 8 (+IN B) | Non-inverting input B | Provides second high-precision input path; supports independent gain/offset calibration per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Input bias current cancellation | Reduces effective input bias current to ≤125nA, enabling use with >1MΩ feedback networks without offset drift. |
| Single-supply rail-to-rail input | Accepts common-mode voltages from V– to (V+ – 1.2V), eliminating need for input level shifters in 3.3V/5V systems. |
| Output swing to ground | Sinks current to within 3mV of V–, supporting true 0V output in single-supply DAC I/V converters. |
| Low 1/f noise | 250nVp-p input-referred noise (0.1–10Hz) - critical for precision DC measurements and weigh-scale applications. |
| Wide supply range | Operates from 2.5V to 36V total supply, allowing direct integration into legacy ±15V, modern 3.3V, and battery-powered 5V systems. |
Applications
| Active Filters | DAC Current-to-Voltage Amplifiers |
|---|---|
Use Scenario: Second-order Sallen-Key low-pass filter for anti-aliasing before 12-bit ADC sampling at 100ksps. IC Role / Device Role / Timing Role: Dual op-amp implements filter topology with matched gain-bandwidth and low phase error across channels. Use Value: 14MHz GBW ensures <0.1° phase deviation at 100kHz cutoff; 7V/µs slew rate prevents distortion on fast transient inputs. | Use Scenario: Converting 0–2mA current output from 12-bit DAC into 0–5V voltage for analog actuator control. IC Role / Device Role / Timing Role: Precision I/V converter with ultra-low input offset to maintain monotonicity across full scale. Use Value: 275µV max VOS contributes <0.45LSB error at 2.5V full scale; output drives 500Ω load without droop. |
| Photo Diode Amplifiers | Battery-Powered Systems |
Use Scenario: Transimpedance amplifier for photodiode-based optical smoke detector with 100pA–10µA dynamic range. IC Role / Device Role / Timing Role: Low-noise, low-input-bias amplifier minimizing dark-current-induced offset and Johnson noise. Use Value: 12nV/√Hz voltage noise and 0.2pA/√Hz current noise preserve SNR; 1.8mA supply current extends battery life. | Use Scenario: Signal conditioning front-end for portable medical ECG monitor powered by two AA cells (3V nominal). IC Role / Device Role / Timing Role: Dual-channel amplifier for lead-I and lead-II differential amplification with common-mode rejection. Use Value: Operates down to 2.5V total supply; 105dB CMRR rejects power-line interference; SO-8 package enables compact PCB layout. |
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 |
|---|---|---|---|
| LT1211IS8#PBF | Same architecture but specified for –40°C to 85°C extended temperature range; identical electrical specs at 25°C. | Required for automotive or industrial environments where ambient exceeds 70°C. | Select LT1211IS8#PBF when operating temperature must be guaranteed over –40°C to 85°C. |
| OP2177ARZ-REEL7 | Lower 600kHz GBW and 0.6V/µs slew rate; superior 60µV max VOS and 0.3µV/°C drift, but higher 1.2mA supply current. | Better for ultra-stable DC applications (e.g., strain gauge bridges) where speed is secondary to long-term drift. | Choose OP2177ARZ-REEL7 when sub-100µV offset stability outweighs bandwidth requirements. |
Compared with LT1211IS8#PBF, the LT1211CS8#PBF trades guaranteed extended temperature operation for lower cost and same room-temperature precision; versus OP2177ARZ-REEL7, it provides 23× higher bandwidth and 11× faster settling at the expense of slightly higher offset and drift - making it optimal for mixed-signal systems needing both accuracy and speed.
Availability
LT1211CS8#PBF is available at Aetrix Electronics and suitable for active filters, DAC current-to-voltage conversion, photo diode amplification, and battery-powered instrumentation requiring stable component supply across industrial and medical design cycles.
Supply support for LT1211CS8#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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, renowned for high-performance op amps, references, and signal conditioning ICs.
The LT1211 product line delivers dual-channel precision amplification optimized for single-supply systems demanding both wide bandwidth and DC accuracy - targeting instrumentation, data acquisition, and sensor interface applications.
FAQ
What is the maximum supply voltage for LT1211CS8#PBF?
The LT1211CS8#PBF supports a total supply voltage range of 2.5V to 36V. When operated on ±15V supplies, its absolute maximum rating is met. For SO-8 packages at 70°C ambient, the practical maximum is 20.3V (±17.1V) to maintain junction temperature ≤150°C under 500Ω load conditions per the manufacturer's thermal guidelines.
Does LT1211CS8#PBF support true rail-to-rail output?
The LT1211CS8#PBF does not provide rail-to-rail output swing. Its output swings to within 3mV of V– while sinking current but only to within ~1.1V of V+ while sourcing 20mA. At no load, output high is typically 4.4V on 5V supply - sufficient for many 12-bit systems but requiring headroom consideration in 3.3V designs.
Can LT1211CS8#PBF operate from a single 3.3V supply?
Yes, the LT1211CS8#PBF is fully specified for 3.3V single-supply operation. It guarantees 275µV max input offset voltage, 1.8mA max supply current per amplifier, and output swing from 0.003V to 2.7V (no load) - enabling direct interfacing with 3.3V microcontrollers and low-voltage ADCs without level translation.
What is the settling time specification for LT1211CS8#PBF?
The LT1211CS8#PBF achieves 0.01% settling in 900ns for a 2V output step under unity-gain configuration. This is measured with AV = 1, ∆VO = 2V, and RL = 500Ω at TA = 25°C and VS = 5V. Settling time degrades to 2.2µs for a 10V step, consistent with its 7V/µs slew rate limit.
Is LT1211CS8#PBF pin-compatible with other dual op amps in SO-8?
The LT1211CS8#PBF uses industry-standard SO-8 pinout (pin 1 = OUT A, pin 2 = –IN A, etc.) and is pin-compatible with other dual op amps sharing the same configuration - including LT1013, OP2177, and AD8628. However, differences in supply current, bandwidth, and input structure require verification of loop stability and noise performance in replacement scenarios.
LT1211CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 7V/µs
- Gain Bandwidth Product:
- 14 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 1.8mA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1211CS8#PBF FAQ
1.How can I place an order for LT1211CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1211CS8#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 LT1211CS8#PBF reliable?
The price and inventory of LT1211CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1211CS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1211CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1211CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1211CS8#PBF?
LT1211CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1211CS8#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 LT1211CS8#PBF?
For technical support, including LT1211CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1211CS8#PBF requirements.
6.How does Aetrix verify that LT1211CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1211CS8#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 LT1211CS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1211CS8#PBF?
All LT1211CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1211CS8#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 LT1211CS8#PBF part is unused and in its original packaging.
Return procedure for LT1211CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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