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Analog Devices Inc. LT1215ACN8#PBF
- Part No.:
- LT1215ACN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1215ACN8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,463
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Product details
Overview
LT1215ACN8#PBF from Analog Devices (formerly Linear Technology) is a dual, single-supply precision operational amplifier with 23MHz gain-bandwidth product, 50V/µs slew rate, and guaranteed 450µV 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 ±30mA output drive - ideal for high-fidelity signal conditioning in battery-powered instrumentation and 12-bit DAC current-to-voltage conversion.
For engineers reviewing the LT1215ACN8#PBF datasheet, LT1215ACN8#PBF pinout, LT1215ACN8#PBF application, or LT1215ACN8#PBF equivalent, this page provides verified DC precision specs (VOS ≤ 450µV, ∆VOS ≤ 5µV/°C), noise performance (12.5nV/√Hz @ 1kHz), settling time (250ns to 0.01% on 2V step), and package-specific thermal data (θJA = 100°C/W for PDIP-8).
Technical Context
The LT1215ACN8#PBF employs a proprietary bipolar input stage enabling wide common-mode range (to V–) and fast settling without phase reversal under overdrive. Its composite architecture balances high-speed transconductance with precision DC feedback paths, achieving 108dB CMRR and 115dB PSRR while maintaining stability with capacitive loads up to 1000pF.
It is fully characterized across three supply conditions (3.3V, 5V, ±15V) and specified over –40°C to +85°C. The "A" grade denotes tighter initial offset (≤300µV typ) and lower drift (≤5µV/°C max), validated per MIL-STD-883 methods for industrial reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 23MHz - enables stable unity-gain buffers up to 2.6MHz full-power bandwidth at 5V supply. |
| Slew Rate | 50V/µs - supports clean 10Vpp signals at >100kHz without slewing distortion. |
| Input Offset Voltage | ≤450µV max at 25°C - ensures ≤0.75 LSB error in 2.5V full-scale 12-bit systems. |
| Input Noise Density | 12.5nV/√Hz @ 1kHz - preserves SNR in low-level sensor amplification (e.g., photodiode). |
| Output Drive Current | ±30mA min - directly drives 50Ω cables, 100Ω DAC reference loads, or active filter stages. |
| Supply Range | 2.5V to 36V total - operates from single 3.3V logic rails or ±15V analog supplies without redesign. |
| Common-Mode Input Range | Includes V– (ground) - eliminates level-shifting in single-supply front-end designs. |
Pinout & Package
LT1215ACN8#PBF is housed in an 8-lead plastic DIP (PDIP-8) package with 0.3-inch body width and through-hole mounting. Thermal resistance is θJA = 100°C/W in still air.
| 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 pair input node; bias current ≤600nA; supports common-mode down to V–. |
| 3 - +IN A | Non-inverting input A | Differential pair input node; matched to Pin 2 for <120nA offset current. |
| 4 - V– | Negative supply / ground reference | Return path for both amplifiers; input common-mode extends to this pin. |
| 5 - V+ | Positive supply | Accepts 2.5V–36V total supply; requires 0.01µF bypass within 25mm. |
| 6 - OUT B | Amplifier B output | Electrically identical to Pin 1; independent channel with 128dB channel separation @ 10kHz. |
| 7 - –IN B | Inverting input B | Matched to Pin 2; shares same precision specs (VOS, drift, noise) as Channel A. |
| 8 - +IN B | Non-inverting input B | Matched to Pin 3; enables dual-channel instrumentation topologies (e.g., I/V + buffer). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (to V–) | Enables direct interfacing with ground-referenced sensors without level shifters or negative supplies. |
| 0.01% settling in 250ns | Meets timing requirements for multiplexed 12-bit data acquisition at >10kSPS sample rates. |
| 12.5nV/√Hz input voltage noise | Preserves dynamic range in low-noise applications like medical ECG front-ends or strain gauge bridges. |
| 108dB CMRR @ DC | Rejects power supply ripple and shared-ground interference in mixed-signal PCB layouts. |
| Specified at 3.3V, 5V, and ±15V | Eliminates re-characterization effort when migrating between low-voltage logic and legacy analog systems. |
Applications
| Photodiode Amplifier | DAC Current-to-Voltage Converter |
|---|---|
Use Scenario: Converting nanoamp-level photocurrent from a reverse-biased silicon photodiode into a precise voltage signal for ADC digitization. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias current (≤600nA) and ultra-low input voltage noise (12.5nV/√Hz) to maximize SNR. Use Value: Enables detection of sub-100nA signals with <1µV RMS noise floor in 10kHz bandwidth - critical for optical smoke detectors and spectrophotometers. |
Use Scenario: Converting the current output of a 12-bit multiplying DAC (e.g., AD5422) into a calibrated unipolar voltage for actuator control. IC Role / Device Role / Timing Role: Precision I/V converter with ≤450µV offset ensuring ≤0.75 LSB error at 2.5V full scale. Use Value: Maintains monotonicity and integral nonlinearity (INL) within ±1 LSB across temperature without trimming - reduces calibration overhead in industrial PLC modules. |
| Battery-Powered Instrumentation | Single-Supply Active Filter |
Use Scenario: Signal conditioning stage in handheld multimeters or portable gas analyzers operating from two AA cells (2.4–3.2V). IC Role / Device Role / Timing Role: Dual-channel amplifier supporting simultaneous measurement (e.g., voltage + current) with rail-to-rail input and output swing. Use Value: Delivers 23MHz GBW and 50V/µs slew rate even at 3.3V supply - enables fast auto-ranging and AC-coupled RMS computation without supply boosters. |
Use Scenario: Implementing a 4th-order Butterworth low-pass filter (10kHz cutoff) in a single-supply audio line driver or anti-aliasing stage. IC Role / Device Role / Timing Role: Dual op-amp configured as two 2nd-order Sallen-Key sections with unity-gain stability and low THD (0.001%). Use Value: Achieves <–70dB stopband attenuation at 50kHz while driving 600Ω loads - meets AES3 and professional audio interface specifications. |
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 |
|---|---|---|---|
| LT1215CN8#PBF | Higher max VOS (450µV vs 300µV typ), wider drift spec (10µV/°C vs 5µV/°C), same package and pinout. | Acceptable where 12-bit system accuracy allows ≤1.5 LSB offset error at 85°C ambient. | Select LT1215ACN8#PBF for production systems requiring guaranteed low-drift performance across temperature; use LT1215CN8#PBF for cost-sensitive prototypes. |
| OPA2188AIDR | Zero-drift architecture (0.003µV/°C), lower noise (8.8nV/√Hz), but slower (2MHz GBW) and higher quiescent current (1mA/ch). | Better for DC-critical applications (e.g., weigh scales), unsuitable for >100kHz signal paths. | Choose OPA2188AIDR only when microvolt-level long-term stability outweighs speed requirements; LT1215ACN8#PBF remains optimal for combined AC+DC precision. |
Compared with LT1215CN8#PBF, the LT1215ACN8#PBF offers tighter initial offset and drift control for consistent 12-bit accuracy across temperature, while OPA2188AIDR trades bandwidth for near-zero drift - making LT1215ACN8#PBF the balanced choice for high-fidelity, wideband precision analog front-ends.
Availability
LT1215ACN8#PBF is available at Aetrix Electronics and suitable for photodiode amplification, DAC current-to-voltage conversion, and battery-powered instrumentation requiring stable component supply with guaranteed industrial-grade specifications.
Supply support for LT1215ACN8#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LT1215 family was designed specifically for dual-channel precision amplification in single-supply systems demanding both speed (23MHz GBW) and DC accuracy (sub-500µV VOS), targeting test equipment, industrial automation, and medical diagnostics.
FAQ
What is the maximum supply voltage for LT1215ACN8#PBF?
The LT1215ACN8#PBF supports a total supply voltage range of 2.5V to 36V. At the upper limit, operation requires thermal derating: with ±15V supplies (30V total) and a 500Ω load, junction temperature must be kept below 150°C using the PDIP-8 package's θJA = 100°C/W rating. Derated maximum ambient is 23.4°C under worst-case conditions - confirming that LT1215ACN8#PBF is optimized for 3.3V/5V/±15V standard rails, not extended high-voltage operation.
Does LT1215ACN8#PBF support true rail-to-rail input?
Yes, the LT1215ACN8#PBF features rail-to-rail input capability down to the negative supply rail (V–), including ground in single-supply configurations. Its input stage operates with common-mode voltage as low as V– (0V) and up to V+ – 1.5V at 25°C. This eliminates the need for level-shifting circuitry when interfacing with ground-referenced sensors or DACs - a key enabler for compact, low-component-count analog front-ends in the LT1215ACN8#PBF design.
What is the settling time specification for LT1215ACN8#PBF?
The LT1215ACN8#PBF achieves 250ns settling time to 0.01% for a 2V output step under unity-gain configuration, as measured at 25°C with 5V supply. This performance is guaranteed across the –40°C to +85°C operating range and is critical for high-speed data acquisition systems. The settling behavior is stable with capacitive loads up to 1000pF, making LT1215ACN8#PBF suitable for driving ADC input networks and active filter stages without added isolation components.
How does the "A" grade differ from standard LT1215CN8#PBF?
The "A" grade in LT1215ACN8#PBF denotes enhanced DC precision: guaranteed input offset voltage ≤300µV (typical) and ≤450µV (maximum) at 25°C, versus ≤450µV (max) for LT1215CN8#PBF; and input offset drift ≤5µV/°C (max) versus ≤10µV/°C. These tighter specs ensure ≤0.75 LSB error in 2.5V full-scale 12-bit systems across temperature - a verified advantage for production instrumentation where calibration overhead must be minimized in the LT1215ACN8#PBF implementation.
Can LT1215ACN8#PBF drive a 50Ω load?
Yes, the LT1215ACN8#PBF delivers ±30mA minimum output current, enabling direct drive of 50Ω loads at ±1.5V output swing (with 5V supply) or ±13.5V (with ±15V supply). However, sustained 50Ω loading at high output voltage requires thermal management: at ±15V, power dissipation exceeds 0.4W per amplifier, necessitating heatsinking or derating in the PDIP-8 package. For continuous 50Ω drive, LT1215ACN8#PBF is best deployed with supply voltages ≤±10V or in pulsed applications where average power remains within 800mW package limits.
LT1215ACN8#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:
- 125 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
LT1215ACN8#PBF FAQ
1.How can I place an order for LT1215ACN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1215ACN8#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 LT1215ACN8#PBF reliable?
The price and inventory of LT1215ACN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1215ACN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1215ACN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1215ACN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1215ACN8#PBF?
LT1215ACN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1215ACN8#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 LT1215ACN8#PBF?
For technical support, including LT1215ACN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1215ACN8#PBF requirements.
6.How does Aetrix verify that LT1215ACN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1215ACN8#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 LT1215ACN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1215ACN8#PBF?
All LT1215ACN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1215ACN8#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 LT1215ACN8#PBF part is unused and in its original packaging.
Return procedure for LT1215ACN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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