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Analog Devices Inc. LT1214CN#PBF
- Part No.:
- LT1214CN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1214CN#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,732
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Product details
Overview
LT1214CN#PBF from Analog Devices (formerly Linear Technology) is a quad precision operational amplifier optimized for single-supply operation with 28MHz gain-bandwidth, 12V/µs slew rate, and ≤275µV input offset voltage at 25°C. It delivers ±30mA output drive, operates from 2.5V to 36V total supply, and supports rail-to-rail input common-mode range including ground - enabling use in 3.3V/5V battery-powered systems, DAC current-to-voltage conversion, and active filter stages.
For engineers reviewing the LT1214CN#PBF datasheet, LT1214CN#PBF pinout, LT1214CN#PBF application, or LT1214CN#PBF equivalent, key selection criteria include guaranteed DC precision across temperature (6µV/°C max drift), low 10nV/√Hz input voltage noise, 30mA minimum output sink/source capability, and compatibility with 14-pin plastic DIP packaging for through-hole prototyping and industrial control signal conditioning.
Technical Context
The LT1214CN#PBF implements a high-speed bipolar input stage with complementary NPN/PNP transistors, enabling wide supply range operation (2.5V–36V) and true single-supply functionality - inputs accept voltages down to V– and outputs swing within 4mV of V– while sinking current. Its 28MHz gain-bandwidth and 12V/µs slew rate support fast settling (500ns to 0.01% for 2V step) without sacrificing DC accuracy.
Internal biasing ensures stable operation across –40°C to +85°C, with open-loop gain ≥200 V/mV (min) at 5V supply and load resistance of 500Ω. Channel separation exceeds 128dB at 100kHz, minimizing crosstalk in multi-channel instrumentation and sensor signal chains where simultaneous high-fidelity amplification is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 28MHz typical - enables stable unity-gain buffer or 10x gain configuration up to ~2.8MHz without phase margin degradation. |
| Slew Rate | 12V/µs typical - supports clean 10Vpp output at 100kHz without slewing distortion in active filters or DAC interfaces. |
| Input Offset Voltage | ≤275µV max at 25°C - eliminates need for external trimming in 12-bit systems (≤0.45LSB error at 2.5V full-scale). |
| Supply Current per Amplifier | ≤3.8mA max - allows four independent channels in low-power portable instrumentation with <15.2mA total quiescent draw. |
| Output Drive Current | ±30mA min - directly drives 500Ω loads or 1000pF capacitive cables without external buffers in data acquisition front-ends. |
| Input Voltage Noise Density | 10nV/√Hz typical at 1kHz - preserves SNR in low-level photodiode or strain gauge amplification below 100kHz. |
| Common-Mode Rejection Ratio | ≥84dB min over –40°C to +85°C - rejects power supply ripple and shared-ground interference in mixed-signal PCB layouts. |
Pinout & Package
LT1214CN#PBF is housed in a 14-lead plastic DIP (N package) with 0.300-inch body width, rated for –40°C to +85°C operation and 70°C/W junction-to-ambient thermal resistance.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - capable of sourcing/sinking ≥30mA; swings to within 4mV of V– and 0.475V of V+ at 20mA sink. |
| 2 | –IN A | Inverting input of Amp A - high-impedance node (≥10MΩ differential); accepts signals down to V– without phase reversal. |
| 3 | +IN A | Non-inverting input of Amp A - identical DC specs to Pin 2; enables precision differential or single-ended configurations. |
| 4 | V+ | Positive supply rail - bypass with 0.01µF ceramic capacitor near pin; supports 2.5V to 36V total supply range. |
| 5 | +IN B | Non-inverting input of Amp B - electrically isolated from other channels; shares same precision specs as Pins 2–3. |
| 6 | –IN B | Inverting input of Amp B - matched offset and drift characteristics with Amp A for dual-channel matched gain blocks. |
| 7 | OUT B | Amplifier B output - fully independent; identical AC/DC performance to Pin 1 for synchronous signal processing. |
| 8 | OUT D | Amplifier D output - fourth channel; enables 4-channel analog front-end without interposer or additional ICs. |
| 9 | –IN D | Inverting input of Amp D - supports independent feedback networks; no internal connection to other inputs. |
| 10 | +IN D | Non-inverting input of Amp D - allows individual reference biasing per channel in multi-sensor systems. |
| 11 | V– | Negative supply rail - referenced to system ground in single-supply mode; must be bypassed if used with split supplies. |
| 12 | +IN C | Non-inverting input of Amp C - completes quad topology; enables parallel processing of four independent analog signals. |
| 13 | –IN C | Inverting input of Amp C - matched performance to all other inputs; supports cascaded or multi-stage filtering. |
| 14 | OUT C | Amplifier C output - fourth output; provides full quad functionality without requiring external multiplexing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs from V– to V+ – 1.5V - enables direct interfacing with unbuffered ADC references or DAC outputs in 3.3V systems. |
| Output swing to ground | Sinks to within 4mV of V– at zero load - eliminates need for negative supply in single-ended sensor interfaces driving microcontroller ADCs. |
| Low input bias current | ≤200nA max - permits use of MΩ-range feedback resistors in high-impedance pH or ion-selective electrode circuits without significant offset error. |
| High PSRR and CMRR | ≥88dB PSRR / ≥84dB CMRR over full temperature range - maintains accuracy in noisy industrial environments with shared power rails. |
| Fast 0.01% settling | 500ns for 2V step - meets timing requirements for multiplexed 100kSPS data acquisition systems with four simultaneous analog channels. |
Applications
| Photodiode Amplifier | DAC Current-to-Voltage Converter |
|---|---|
|
Use Scenario: Converting weak current from silicon photodiodes in optical smoke detectors or pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier with 10MΩ feedback resistor, leveraging low input bias current and 10nV/√Hz voltage noise. Use Value: Enables detection of sub-nA photocurrents with <1µV RMS noise contribution in 10kHz bandwidth, improving signal-to-noise ratio by 12dB vs. standard op amps. |
Use Scenario: Converting 4–20mA industrial loop current or 12-bit DAC output into precise 0–5V analog control signals. IC Role / Device Role / Timing Role: Precision I-to-V converter with matched resistor network, using low VOS and drift to maintain calibration over temperature. Use Value: Achieves ≤0.5 LSB total error across –40°C to +85°C, eliminating field recalibration in programmable logic controller (PLC) analog output modules. |
| Single-Supply Active Filter | Battery-Powered Instrumentation |
|
Use Scenario: 3-pole 1MHz Butterworth low-pass filter in portable spectrum analyzers or audio test equipment. IC Role / Device Role / Timing Role: Dual-amplifier filter section (one LT1214CN#PBF per 2-pole stage), exploiting 28MHz GBW for flat group delay. Use Value: Maintains ≤0.1dB passband ripple to 800kHz and –40dB stopband attenuation at 1.5MHz on 5V single supply - no external compensation required. |
Use Scenario: Signal conditioning front-end in handheld multimeters or portable environmental sensors powered by two AA cells (3V). IC Role / Device Role / Timing Role: Quad-channel amplifier for simultaneous voltage, current, temperature, and humidity signal processing. Use Value: Delivers full 12-bit accuracy from 2.5V supply with <15.2mA total quiescent current, enabling >200 hours of operation on alkaline batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1214CS#PBF | Same die in 16-pin narrow SOIC package; θJA = 100°C/W vs. 70°C/W for DIP; identical electrical specs. | Preferred for space-constrained PCBs; requires rework for through-hole prototyping or legacy DIP sockets. | Select LT1214CS#PBF when board area is limited and surface-mount assembly is available. |
| OP4177ARZ | Lower slew rate (0.7V/µs), higher precision (60µV max VOS), lower noise (7.9nV/√Hz), but only 1.3MHz GBW. | Better for DC-critical applications like weigh scales; unsuitable for >100kHz active filters or fast-settling DAC interfaces. | Choose OP4177ARZ only when ultra-low offset and drift outweigh bandwidth and speed requirements. |
Compared with LT1214CS#PBF, LT1214CN#PBF offers superior thermal dissipation in high-load conditions due to lower θJA, while OP4177ARZ trades bandwidth and slew rate for enhanced DC accuracy - making LT1214CN#PBF optimal for mixed-signal applications demanding both speed and precision in through-hole designs.
Availability
LT1214CN#PBF is available at Aetrix Electronics and suitable for photodiode amplification, DAC current-to-voltage conversion, and single-supply active filter design requiring stable component supply across industrial, test & measurement, and portable instrumentation programs.
Supply support for LT1214CN#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, serving industrial, automotive, communications, and healthcare markets.
The LT1214CN#PBF belongs to ADI's legacy Linear Technology precision op amp product line, engineered specifically for applications demanding wide supply range, fast settling, and uncompromised DC accuracy in compact quad configurations.
FAQ
What is the maximum supply voltage rating for LT1214CN#PBF?
The LT1214CN#PBF has an absolute maximum total supply voltage (V+ to V–) of 36V. It is fully specified and guaranteed over a recommended operating range of 2.5V to 36V total supply, including single 3.3V, single 5V, and ±15V configurations. Operation below 2.5V is possible but degrades input common-mode range and phase margin.
Does LT1214CN#PBF support true rail-to-rail output swing?
No - the LT1214CN#PBF does not provide rail-to-rail output swing. Its output swings to within 4mV of V– while sinking current, but only to within 0.475V of V+ when sinking 20mA. At no load, it reaches 4.20V on a 5V supply. This asymmetry is intentional to preserve speed and drive strength, distinguishing it from rail-to-rail output op amps.
Can LT1214CN#PBF operate from a single 3.3V supply?
Yes - the LT1214CN#PBF is fully characterized and guaranteed for single 3.3V operation. At 3.3V, it delivers 2.45V max output high (no load), 0.006V output low (no load), 275µV max input offset voltage, and maintains 28MHz gain-bandwidth and 12V/µs slew rate. Input common-mode range extends from V– to 1.5V, supporting ground-referenced sensor interfaces.
What is the thermal resistance (θJA) of the LT1214CN#PBF package?
The LT1214CN#PBF in its 14-lead plastic DIP (N) package has a junction-to-ambient thermal resistance (θJA) of 70°C/W under standard JEDEC test conditions. This value is confirmed in the datasheet's "Package/Order Information" table and is critical for calculating worst-case junction temperature when driving heavy loads or operating at elevated ambient temperatures.
Is LT1214CN#PBF pin-compatible with other quad op amps like LM324?
No - the LT1214CN#PBF uses a non-standard pinout optimized for layout isolation and thermal performance, differing significantly from LM324 and most industry-standard quad op amps. Its Pin 1 is OUT A (not V–), Pin 4 is V+, Pin 11 is V–, and Pin 14 is OUT C. Direct replacement would require PCB redesign and is not recommended without circuit validation.
LT1214CN#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 12V/µs
- Gain Bandwidth Product:
- 28 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 90 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 3.4mA (x4 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LT1214CN#PBF FAQ
1.How can I place an order for LT1214CN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1214CN#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 LT1214CN#PBF reliable?
The price and inventory of LT1214CN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1214CN#PBF is usually 5 days.
3.What payment methods are accepted for LT1214CN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1214CN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1214CN#PBF?
LT1214CN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1214CN#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 LT1214CN#PBF?
For technical support, including LT1214CN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1214CN#PBF requirements.
6.How does Aetrix verify that LT1214CN#PBF is sourced from the original manufacturer or authorized distributors?
All LT1214CN#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 LT1214CN#PBF meets industry standards.
7.What is the process for return or replacement of LT1214CN#PBF?
All LT1214CN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1214CN#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 LT1214CN#PBF part is unused and in its original packaging.
Return procedure for LT1214CN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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