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Analog Devices Inc. LT1359CS14#PBF
- Part No.:
- LT1359CS14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1359CS14#PBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 4 CIRC 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,694
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Product details
Overview
LT1359CS14#PBF from Analog Devices (formerly Linear Technology) is a quad high-speed voltage-feedback operational amplifier with 25MHz gain bandwidth, 600V/µs slew rate, and 2.5mA maximum supply current per amplifier. It delivers ±12.5V output swing into 500Ω with ±15V supplies and remains unity-gain stable while driving any capacitive load - making it ideal for precision data acquisition systems, active filters, and photodiode amplification.
For engineers reviewing the LT1359CS14#PBF datasheet, LT1359CS14#PBF pinout, LT1359CS14#PBF application, or LT1359CS14#PBF equivalent, key selection criteria include its C-Load™ stability with unrestricted capacitive loading, low 8nV/√Hz input noise voltage, 600µV max input offset voltage, and guaranteed operation from –40°C to 85°C in the 14-pin SOIC package.
Technical Context
The LT1359CS14#PBF employs a unique hybrid topology combining voltage-feedback architecture with current-feedback slewing behavior, enabling both high DC precision and fast transient response. Its matched high-impedance inputs and single-stage design yield excellent settling characteristics: 115ns to 0.1% and 220ns to 0.01% for a 10V step at AV = –1.
This amplifier is internally compensated for unity-gain stability and features bootstrapped output-stage compensation that dynamically adapts to capacitive loads - ensuring unconditional stability without external components while maintaining phase margin above 30° across supply voltages and temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 25MHz typical at ±15V - supports closed-loop designs up to ~20MHz with moderate gain. |
| Slew Rate | 600V/µs typical at ±15V - enables clean 10V step response with minimal distortion in high-speed buffers. |
| Input Noise Voltage | 8nV/√Hz at 10kHz - preserves signal integrity in low-level analog front-ends like photodiode amps. |
| Input Offset Voltage | 0.6mV max at ±15V - ensures <1 LSB error in 12-bit DAC I-to-V conversion at ±10V full scale. |
| Output Swing | ±12.5V into 500Ω at ±15V - drives standard instrumentation loads without external boost stages. |
| Supply Current | 2.5mA per amplifier max at ±15V - enables quad-channel high-speed amplification within 10mA total budget. |
| Settling Time | 220ns to 0.01% for 10V step - meets timing requirements of 1MSPS SAR ADC drivers. |
Pinout & Package
LT1359CS14#PBF is housed in a 14-lead plastic SOIC (Small Outline Integrated Circuit) package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and θJA = 160°C/W thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Amplifier A output | Capable of sourcing/sinking ≥25mA; directly drives 500Ω loads to ±12.5V. |
| 2 - –IN A | Inverting input A | Differential input pair base node; accepts ±10V transient differential voltage safely. |
| 3 - +IN A | Non-inverting input A | Complementary NPN/PNP input structure enables balanced bias current cancellation. |
| 4 - +IN B | Non-inverting input B | Shared V+ rail reference point; requires matched source impedance for optimal CMRR. |
| 5 - –IN B | Inverting input B | Same topology as Pin 2; supports independent feedback networks per channel. |
| 6 - OUT B | Amplifier B output | Electrically identical to Pin 1; channel separation >98dB prevents crosstalk in multi-channel filters. |
| 7 - OUT C | Amplifier C output | Third independent output; enables 3-stage active filter topologies without inter-stage buffering. |
| 8 - V– | Negative supply rail | Common return for all four amplifiers; must be decoupled with 0.1µF ceramic + 1µF tantalum. |
| 9 - –IN D | Inverting input D | Fourth amplifier inverting input; supports fully differential configurations when paired with Pin 13. |
| 10 - OUT D | Amplifier D output | Final channel output; usable for reference buffering or synchronous signal conditioning. |
| 11 - +IN D | Non-inverting input D | Matches Pin 3 electrical behavior; enables independent gain-setting for fourth channel. |
| 12 - +IN C | Non-inverting input C | Provides dedicated non-inverting path for third amplifier; avoids shared input node errors. |
| 13 - –IN C | Inverting input C | Supports transimpedance configuration for photodiode current-to-voltage conversion. |
| 14 - V+ | Positive supply rail | Accepts 2.5V to 15V per rail (±2.5V to ±15V total); total supply voltage ≤36V absolute max. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ stability | Drives unlimited capacitive loads (including coaxial cable) without external compensation or risk of oscillation. |
| High slew rate / low power ratio | 600V/µs slew at only 2.5mA per amp - outperforms legacy 25MHz op-amps by >2× in efficiency. |
| Low input noise density | 8nV/√Hz enables sub-10µV RMS noise in 100kHz bandwidth - critical for sensor signal chains. |
| Wide supply range | Operates from ±2.5V to ±15V - supports both low-voltage portable systems and industrial ±12V rails. |
| Guaranteed AC/DC specs | All key parameters (GBW, SR, VOS, AVOL) specified over –40°C to +85°C - suitable for automotive under-hood use. |
Applications
| Photodiode Amplification | Data Acquisition Front-End |
|---|---|
Use Scenario: Converting weak current signals from scientific photodiodes into precise voltage outputs for digitization. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with low input bias current (500nA max) and ultra-low input noise (8nV/√Hz). Use Value: Enables detection of picoamp-level photocurrents with <10µV RMS noise floor in 100kHz bandwidth. | Use Scenario: Buffering and conditioning analog signals prior to sampling by high-speed SAR ADCs. IC Role / Device Role / Timing Role: Driver amplifier with 220ns 0.01% settling time and ±12.5V output swing into 500Ω. Use Value: Supports accurate 1MSPS sampling of ±10V full-scale signals without aperture uncertainty or droop. |
| Active Filter Stage | DAC Output Conditioning |
Use Scenario: Implementing high-order Butterworth or Chebyshev filters in medical imaging or spectrum analyzers. IC Role / Device Role / Timing Role: Quad-channel building block for 4th-order active filters with matched AC performance across channels. Use Value: Achieves <0.1% group delay variation across 200kHz passband using identical LT1359CS14#PBF sections. | Use Scenario: Converting digital audio or control DAC outputs into low-impedance, low-noise analog voltages. IC Role / Device Role / Timing Role: I-to-V converter and output buffer with 600µV max VOS and 0.5% gain error at AV = 1. Use Value: Delivers 16-bit monotonicity in audio DAC interfaces with THD <0.01% at 10kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1362CS14#PBF | 50MHz GBW, 800V/µs SR, 4mA supply current per amp - higher speed but 60% more power. | Better for >30MHz closed-loop bandwidth needs; less suitable for battery-powered DAQ due to current draw. | Select when bandwidth >30MHz is required and power budget allows ≥4mA/amp. |
| LT1355CS14#PBF | 12MHz GBW, 400V/µs SR, 1mA supply current per amp - lower speed, half the power, same noise. | Ideal for 100kHz–1MHz instrumentation where 25MHz headroom is unnecessary. | Select for cost-optimized, low-power precision applications where 12MHz GBW suffices. |
Compared with LT1362CS14#PBF, the LT1359CS14#PBF trades 50MHz bandwidth for 40% lower supply current and better noise efficiency; compared with LT1355CS14#PBF, it doubles bandwidth and slew rate while adding only 1.5mA per amplifier - making it the optimal balance for 1–20MHz precision high-speed signal paths.
Availability
LT1359CS14#PBF is available at Aetrix Electronics and suitable for data acquisition systems, active filter modules, photodiode amplifier circuits, and DAC output conditioning requiring stable component supply across industrial temperature ranges.
Supply support for LT1359CS14#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, formed through the acquisition of Linear Technology in 2017.
The LT1359CS14#PBF belongs to ADI's legacy Linear Technology high-speed op-amp product line, engineered specifically for demanding precision analog applications including instrumentation, medical imaging, and test equipment where speed, noise, and stability must coexist.
FAQ
What is the maximum capacitive load the LT1359CS14#PBF can drive without external compensation?
The LT1359CS14#PBF features C-Load™ technology and is unconditionally stable with any capacitive load - including direct connection to coaxial cables or >10,000pF capacitors. No external compensation is required, though for optimal pulse fidelity with 75Ω coax, a series 75Ω resistor at the output is recommended.
Does the LT1359CS14#PBF support dual-supply operation at ±2.5V?
Yes, the LT1359CS14#PBF is fully specified for ±2.5V operation. At this supply, it delivers 11MHz gain bandwidth, 100V/µs slew rate, ±1.2V output swing into 500Ω, and maintains 2.4mA maximum supply current per amplifier - enabling low-voltage portable instrumentation designs.
What is the input common-mode voltage range for the LT1359CS14#PBF at ±15V supplies?
At ±15V supplies, the LT1359CS14#PBF supports an input common-mode voltage range from –13.2V to +13.4V - exceeding the rails by >1.2V on both sides. This rail-to-rail input capability simplifies level-shifting in multi-stage amplifier designs.
How does the LT1359CS14#PBF achieve its high slew rate while maintaining low input bias current?
The LT1359CS14#PBF uses complementary NPN/PNP input pairs with first-order bias current cancellation, achieving ≤500nA max IB while delivering 600V/µs slew via a high-current gain-node charging path. This topology separates input stage linearity from output drive strength - unlike conventional current-feedback op-amps.
Is the LT1359CS14#PBF pin-compatible with other quad op-amps in 14-pin SOIC packages?
No - the LT1359CS14#PBF has a proprietary pinout optimized for quad-channel layout (e.g., V+ on Pin 14, V– on Pin 8, interleaved inputs/outputs). It is not pin-compatible with industry-standard quad op-amps like LM324 or TL084; PCB layout must follow the official Linear Technology pin map.
LT1359CS14#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 600V/µs
- Gain Bandwidth Product:
- 25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 120 nA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 2mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
LT1359CS14#PBF FAQ
1.How can I place an order for LT1359CS14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1359CS14#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 LT1359CS14#PBF reliable?
The price and inventory of LT1359CS14#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1359CS14#PBF is usually 5 days.
3.What payment methods are accepted for LT1359CS14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1359CS14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1359CS14#PBF?
LT1359CS14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1359CS14#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 LT1359CS14#PBF?
For technical support, including LT1359CS14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1359CS14#PBF requirements.
6.How does Aetrix verify that LT1359CS14#PBF is sourced from the original manufacturer or authorized distributors?
All LT1359CS14#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 LT1359CS14#PBF meets industry standards.
7.What is the process for return or replacement of LT1359CS14#PBF?
All LT1359CS14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1359CS14#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 LT1359CS14#PBF part is unused and in its original packaging.
Return procedure for LT1359CS14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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