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Analog Devices Inc. LT1211IS8#PBF
- Part No.:
- LT1211IS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1211IS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,113
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Product details
Overview
LT1211IS8#PBF from Analog Devices (formerly Linear Technology) is a dual precision operational amplifier optimized for single-supply operation with 14MHz gain-bandwidth product, 7V/µs slew rate, and rail-to-rail output swing to ground. It delivers 20mA output drive, 275µV max input offset voltage at 25°C, and operates from 2.5V to 36V total supply. It is used in high-accuracy signal conditioning for battery-powered instrumentation and DAC current-to-voltage conversion.
For engineers reviewing the LT1211IS8#PBF datasheet, LT1211IS8#PBF pinout, LT1211IS8#PBF application, or LT1211IS8#PBF equivalent, key selection criteria include guaranteed –40°C to 85°C operation, low 1.8mA max supply current per amplifier, input voltage range including ground, and SO-8 surface-mount packaging compatible with automated assembly.
Technical Context
The LT1211IS8#PBF implements a bipolar input stage with bias current cancellation, enabling low input bias current (125nA max) and low input offset current (30nA max) across temperature. Its architecture supports stable operation with capacitive loads up to 1000pF and maintains phase margin >40° over full supply range (2.5V–36V).
It features matched dual amplifiers sharing a common substrate, delivering 128dB channel separation at 1kHz and 100dB CMRR at 10kHz under ±15V supply. Input-referred noise is 12nV/√Hz and 0.2pA/√Hz at 1kHz, supporting precision DC and wideband AC applications without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 14MHz typ - enables stable unity-gain buffer or gain-of-10 amplification up to 1.4MHz. |
| Slew Rate | 7V/µs typ - supports clean 10Vpp output at 1MHz 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 precision amplification in <3.6mA total quiescent power. |
| Output Drive | ±20mA min - directly drives 500Ω loads or 1000pF capacitive cables without external buffers. |
| Input Voltage Range | Includes ground on single supply - accepts 0V input while powered from +5V, simplifying sensor interfacing. |
| Operating Temp Range | –40°C to +85°C - qualified for industrial control and automotive cabin electronics. |
Pinout & Package
LT1211IS8#PBF is housed in an 8-lead plastic SOIC (SO-8) package with standard JEDEC MS-012AC footprint, 1.27mm pitch, and 4.9mm × 6.0mm body size. Thermal resistance θJA = 150°C/W in still air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Delivers rail-to-rail output swing; sinks 20mA to V–, sources 20mA from V+. |
| 2 (–IN A) | Inverting input A | Differential input node; high-impedance (≥10MΩ), low bias current (125nA max). |
| 3 (+IN A) | Non-inverting input A | Differential input node; matches –IN A in offset and drift performance. |
| 4 (V–) | Negative supply rail | Reference for dual supply; connects to ground in single-supply configurations. |
| 5 (V+) | Positive supply rail | Accepts 2.5V to 18V (single) or ±1.25V to ±18V (split); bypass with 0.01µF near pin. |
| 6 (OUT B) | Amplifier B output | Electrically isolated from OUT A; shares same V+ and V– rails. |
| 7 (–IN B) | Inverting input B | Matched to –IN A; enables dual-channel signal processing with minimal inter-channel crosstalk. |
| 8 (+IN B) | Non-inverting input B | Matched to +IN A; supports independent gain-setting networks per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output swing | Outputs sink to within 3mV of V– (ground) while sinking zero current-enables true single-supply 0V–VCC signal handling. |
| Low-noise bipolar input stage | 12nV/√Hz input voltage noise and 0.2pA/√Hz input current noise at 1kHz-preserves SNR in photodiode and sensor front-ends. |
| Bias current cancellation | Reduces input bias current to 125nA max and offset current to 30nA max-minimizes DC error in high-impedance feedback networks. |
| Wide supply range operation | Functional from 2.5V to 36V total supply-supports 3.3V, 5V, and ±15V systems without redesign. |
| High DC precision | 275µV max VOS, 6µV/°C max drift, and 1200V/mV open-loop gain-eliminates manual trimming in 16-bit data acquisition paths. |
Applications
| Active Filters | Photo Diode Amplifiers |
|---|---|
Use Scenario: Second-order Sallen-Key low-pass filter for anti-aliasing before 100kSPS ADC in portable medical sensors. IC Role / Device Role / Timing Role: Dual op-amp provides unity-gain buffer and active filter section with matched gain blocks. Use Value: 14MHz GBW and 7V/µs slew rate ensure <0.01% settling in <900ns for 2V steps-meets ENOB >14-bit requirements. | Use Scenario: Transimpedance amplifier converting picoamp-level photocurrent from silicon photodiode into voltage for optical smoke detector. IC Role / Device Role / Timing Role: Precision op-amp configured as low-noise TIA with 10MΩ feedback resistor. Use Value: 0.2pA/√Hz input current noise and 12nV/√Hz voltage noise minimize total integrated noise-extends detection range by 3× vs generic op-amps. |
| DAC Current-to-Voltage Conversion | Battery-Powered Systems |
Use Scenario: Converting 0–20mA industrial DAC output into 0–5V analog signal for PLC input modules. IC Role / Device Role / Timing Role: Single-supply op-amp operating from +5V, referenced to ground, with output swing to 0V. Use Value: Rail-to-ground output and 20mA drive capability eliminate need for negative rail or external output buffer-reduces BOM count by 2 components. | Use Scenario: Signal conditioning front-end for lithium-ion battery voltage and temperature monitoring in handheld test equipment. IC Role / Device Role / Timing Role: Dual op-amp performing battery voltage scaling and thermistor signal amplification. Use Value: 1.8mA max supply current per amp and –40°C to +85°C rating enable 10-year field life with <10µA standby leakage-meets IEC 62368-1 energy efficiency targets. |
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 |
|---|---|---|---|
| OP2177ARZ-REEL7 | Lower 600kHz GBW, 0.6V/µs slew rate, but superior 25µV max VOS and 0.6µV/°C drift. | Better for ultra-stable DC-coupled integrators; unsuitable for >100kHz closed-loop bandwidth. | Select when long-term DC accuracy outweighs speed; avoid if >100kHz signal fidelity required. |
| TLV2462IDR | CMOS input (1pA bias), 6.4MHz GBW, 1.6V/µs slew, but only 1.8V to 6V supply range and no –40°C to +85°C guarantee. | Preferred for ultra-low-power (<500µA/amp) 3.3V systems; not rated for industrial temperature or ±15V operation. | Choose for battery-powered IoT nodes with sub-1VPP signals; reject for industrial or dual-supply designs. |
Compared with OP2177ARZ-REEL7 and TLV2462IDR, LT1211IS8#PBF uniquely balances 14MHz bandwidth, rail-to-ground output, and industrial temperature rating-making it the only option among the three qualified for 5V/±15V mixed-signal systems requiring both speed and precision.
Availability
LT1211IS8#PBF is available at Aetrix Electronics and suitable for active filters, photo diode amplifiers, DAC current-to-voltage conversion, and battery-powered systems requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LT1211IS8#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, acquired Linear Technology in 2017 to expand precision amplifier and power management portfolios.
The LT1211 series belongs to ADI's legacy Linear Technology precision op-amp family, designed specifically for industrial and instrumentation applications demanding high DC accuracy, wide bandwidth, and robust single-supply operation without performance compromise.
FAQ
What is the maximum supply voltage for LT1211IS8#PBF?
The LT1211IS8#PBF supports a total supply voltage range of 2.5V to 36V. In dual-supply mode, this translates to ±1.25V to ±18V; in single-supply mode, it operates from +2.5V to +36V with V– tied to ground. Absolute maximum rating is 36V between V+ and V– pins, beyond which permanent damage may occur.
Does LT1211IS8#PBF support rail-to-rail input?
No, LT1211IS8#PBF does not feature rail-to-rail input. Its input common-mode voltage range extends to ground (0V) on single supply but stops ~1.5V below V+ at room temperature-e.g., 0V to 3.5V on +5V supply. This is sufficient for ground-referenced sensors but requires level-shifting for signals near V+.
What is the thermal resistance θJA for LT1211IS8#PBF in SO-8 package?
The LT1211IS8#PBF in SO-8 (S8) package has a junction-to-ambient thermal resistance (θJA) of 150°C/W under standard JEDEC PCB conditions (2s2p copper). This value assumes no heatsink and natural convection; actual thermal performance improves with added copper pour or airflow.
Can LT1211IS8#PBF drive capacitive loads?
Yes, LT1211IS8#PBF is stable driving capacitive loads up to 1000pF with appropriate feedback compensation. The datasheet confirms stable operation with 20pF to 1000pF loads in unity-gain configuration. For >100pF, adding a small series resistor (10–50Ω) between output and load is recommended to maintain phase margin >45°.
Is LT1211IS8#PBF pin-compatible with LT1211CS8?
Yes, LT1211IS8#PBF and LT1211CS8 share identical SO-8 pinout, footprint, and electrical interface. The only differences are temperature grade (I-grade: –40°C to +85°C vs C-grade: 0°C to +70°C) and input offset voltage specification (275µV max for both at 25°C, but I-grade guarantees performance across full temp range).
LT1211IS8#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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1211IS8#PBF FAQ
1.How can I place an order for LT1211IS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1211IS8#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 LT1211IS8#PBF reliable?
The price and inventory of LT1211IS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1211IS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1211IS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1211IS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1211IS8#PBF?
LT1211IS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1211IS8#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 LT1211IS8#PBF?
For technical support, including LT1211IS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1211IS8#PBF requirements.
6.How does Aetrix verify that LT1211IS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1211IS8#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 LT1211IS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1211IS8#PBF?
All LT1211IS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1211IS8#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 LT1211IS8#PBF part is unused and in its original packaging.
Return procedure for LT1211IS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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