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Analog Devices Inc. LT1215CN8#PBF
- Part No.:
- LT1215CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1215CN8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:129
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Product details
Overview
LT1215CN8#PBF from Analog Devices (formerly Linear Technology) is a dual precision operational amplifier optimized for single-supply operation with 23MHz gain-bandwidth product, 50V/µs slew rate, and rail-to-rail output swing to ground while sinking current. It features 450µV max input offset voltage, 10µV/°C max drift, and supports 3.3V, 5V, and ±15V supplies - ideal for high-accuracy signal conditioning in battery-powered instrumentation.
For engineers reviewing the LT1215CN8#PBF datasheet, LT1215CN8#PBF pinout, LT1215CN8#PBF application, or LT1215CN8#PBF equivalent, key selection criteria include guaranteed 0.01% settling in 250ns (2V step), 30mA output drive into low-impedance loads, and DC precision enabling trim-free designs in 12-bit and 16-bit systems.
Technical Context
The LT1215CN8#PBF employs a proprietary bipolar input stage with complementary NPN/PNP transistors to achieve wide input common-mode range (including ground) and fast settling without phase reversal. Its architecture maintains stability with capacitive loads up to 1000pF and delivers 12.5nV/√Hz input voltage noise at 1kHz.
It operates across total supply voltages from 2.5V to 36V, with specified performance over –40°C to +85°C. Input bias current remains below 600nA, and open-loop gain exceeds 1000V/mV, supporting high-loop-gain configurations in active filters and DAC I/V converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 23MHz typical - enables stable unity-gain buffers and 2nd-order active filters up to ~2.8MHz bandwidth. |
| Slew Rate | 50V/µs typical - supports clean 10Vpp signals at >100kHz without slewing distortion. |
| Input Offset Voltage | 450µV maximum - ensures ≤0.75 LSB error in 2.5V full-scale 12-bit systems. |
| Supply Current per Amp | 6.6mA maximum - allows dual-channel operation on 5V rails with <13.2mA total quiescent draw. |
| Output Drive Current | ±30mA minimum - drives 500Ω loads directly without external buffering. |
| Input Noise Density | 12.5nV/√Hz at 1kHz - suitable for low-noise photodiode and sensor front-ends. |
| Common-Mode Range | Includes ground (V–) to 3.2V on 5V supply - simplifies single-supply interfacing with microcontroller ADCs. |
Pinout & Package
LT1215CN8#PBF is housed in an 8-lead plastic DIP (PDIP) package with 0.3-inch body width, JEDEC MS-001 compliant, rated for 150°C junction temperature and 100°C/W θJA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Capable of sourcing/sinking ≥30mA; swings to within 630mV of V– when sinking 30mA. |
| 2 (–IN A) | Inverting input A | Differential input pair node; bias current ≤600nA; supports common-mode down to V–. |
| 3 (+IN A) | Non-inverting input A | Differential input pair node; matched to Pin 2 for CMRR ≥86dB. |
| 4 (V–) | Negative supply | Ground reference for single-supply operation; must be bypassed with 0.01µF capacitor. |
| 5 (V+) | Positive supply | Accepts 2.5V to 18V single or ±1.7V to ±18V split; bypassing critical for stability. |
| 6 (OUT B) | Amplifier B output | Independent output with identical drive capability and settling specs as OUT A. |
| 7 (–IN B) | Inverting input B | Electrically isolated from Channel A; channel separation ≥128dB at 10kHz. |
| 8 (+IN B) | Non-inverting input B | Matched to Pin 7; enables dual-channel instrumentation or differential receiver topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-ground output swing | Outputs sink current to within 630mV of V– at 30mA load - eliminates need for negative rail in many sensor interfaces. |
| Single-supply compatibility | Input common-mode includes V– and extends to 3.2V on 5V supply - enables direct connection to 0–3.3V logic and ADC references. |
| Fast 0.01% settling | 250ns for 2V step - meets timing requirements of high-speed data acquisition and multiplexed sensor systems. |
| Low 1/f noise | 400nVP-P (0.1–10Hz) - preserves DC accuracy in precision integrators and low-frequency measurement front-ends. |
| High PSRR & CMRR | 93dB min PSRR and 84dB min CMRR over –40°C to +85°C - rejects power supply ripple and common-mode interference in noisy industrial environments. |
Applications
| 2.5V Full-Scale 12-Bit Systems | Active Filters |
|---|---|
Use Scenario: Precision analog front-end for 12-bit SAR ADCs operating from 2.5V supplies in portable medical sensors. IC Role / Device Role / Timing Role: Buffer and level-shift sensor output to match ADC input range while maintaining sub-LSB offset error. Use Value: 450µV max VOS ensures ≤0.75 LSB error; 250ns 0.01% settling supports >1MSPS sampling with minimal dead time. | Use Scenario: 4th-order Sallen-Key low-pass filter in audio anti-aliasing or vibration monitoring systems. IC Role / Device Role / Timing Role: Dual-channel op amp implementing two 2nd-order stages with independent gain and Q control. Use Value: 23MHz GBW and 50V/µs slew rate preserve filter shape up to 2.8MHz; 30mA drive handles feedback network loading. |
| Photo Diode Amplifiers | Battery-Powered Systems |
Use Scenario: Transimpedance amplifier for low-light photodiode detection in environmental light meters. IC Role / Device Role / Timing Role: Low-noise, low-input-bias-current amplifier converting photocurrent to voltage with minimal dark current error. Use Value: 0.5pA/√Hz input current noise and 12.5nV/√Hz voltage noise maximize SNR; 600nA max IB limits diode bias error. | Use Scenario: Signal conditioning in handheld test equipment powered by two AA cells (2.4–3.2V). IC Role / Device Role / Timing Role: Dual-channel amplifier for sensor excitation and measurement, operating across full battery discharge curve. Use Value: Guaranteed operation down to 2.5V total supply; 6.6mA max IQ extends runtime; rail-to-ground output maximizes dynamic 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 |
|---|---|---|---|
| LT1215CS8#PBF | Same core specs but in SO-8 surface-mount package; θJA = 150°C/W vs 100°C/W for CN8. | Preferred for space-constrained PCBs; requires thermal management at high output currents. | Select when board area is limited and reflow assembly is used; verify thermal rise under worst-case load. |
| OP27GPZ | Lower noise (3.5nV/√Hz), slower slew (2.8V/µs), higher VOS (250µV typ), no rail-to-ground output. | Better for ultra-low-noise DC-coupled amplification; unsuitable for single-supply output swing to ground. | Choose only for low-frequency, low-noise applications where output swing above ground suffices and speed is secondary. |
Compared with LT1215CS8#PBF, LT1215CN8#PBF offers superior thermal performance in through-hole layouts and easier prototyping; versus OP27GPZ, it provides faster settling, single-supply output capability, and lower offset drift - making it more suitable for battery-powered precision signal chains requiring both speed and rail-to-ground operation.
Availability
LT1215CN8#PBF is available at Aetrix Electronics and suitable for precision instrumentation, active filtering, photodiode amplification, and battery-powered embedded systems requiring stable component supply across extended temperature ranges.
Supply support for LT1215CN8#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 legacy high-performance analog portfolio, including precision op amps, voltage references, and power management ICs.
The LT1215 product line was designed for high-speed, high-DC-precision applications in single-supply systems - targeting instrumentation, data acquisition, and sensor interface circuits where traditional op amps compromise between speed and accuracy.
FAQ
What is the maximum supply voltage for LT1215CN8#PBF?
The LT1215CN8#PBF supports a total supply voltage range of 2.5V to 36V. When operated on ±15V supplies, its absolute maximum rating is satisfied, and it delivers full specified performance including 50V/µs slew rate and 23MHz gain-bandwidth. Derating is required above 85°C ambient per thermal calculations in the datasheet.
Does LT1215CN8#PBF support true rail-to-rail input?
No, LT1215CN8#PBF does not have rail-to-rail input. Its input common-mode range extends to ground (V–) and up to 3.2V on a 5V supply (i.e., within 1.8V of V+), but it cannot accept signals at the positive rail. However, it does provide rail-to-ground output swing while sinking current - a key feature for single-supply systems.
Can LT1215CN8#PBF drive a 500Ω load at 5V supply?
Yes, LT1215CN8#PBF can drive a 500Ω load at 5V supply: its output swings to 3.60V (min) when sourcing 30mA and to 0.630V (max) when sinking 30mA. This yields >2.9V of usable swing across the load. Thermal analysis shows the PDIP package remains within 150°C junction limit at 70°C ambient under these conditions.
What is the settling time specification for LT1215CN8#PBF?
The LT1215CN8#PBF achieves 0.01% settling in 250ns for a 2V output step and 480ns for a 10V step under unity-gain configuration. These values are measured at TA = 25°C on ±15V supplies and are guaranteed across the –40°C to +85°C operating range per characterization data in the official datasheet.
Is LT1215CN8#PBF RoHS-compliant and lead-free?
Yes, LT1215CN8#PBF is RoHS-compliant and lead-free. The "#PBF" suffix explicitly denotes lead-free (Pb-free) packaging per Analog Devices' standard nomenclature. The device meets EU RoHS Directive 2011/65/EU and is compatible with standard SnAgCu reflow profiles.
LT1215CN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 50V/µs
- Gain Bandwidth Product:
- 23 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 420 nA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 4.75mA (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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1215CN8#PBF FAQ
1.How can I place an order for LT1215CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1215CN8#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 LT1215CN8#PBF reliable?
The price and inventory of LT1215CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1215CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1215CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1215CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1215CN8#PBF?
LT1215CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1215CN8#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 LT1215CN8#PBF?
For technical support, including LT1215CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1215CN8#PBF requirements.
6.How does Aetrix verify that LT1215CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1215CN8#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 LT1215CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1215CN8#PBF?
All LT1215CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1215CN8#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 LT1215CN8#PBF part is unused and in its original packaging.
Return procedure for LT1215CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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