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Analog Devices Inc. LT1358CS8#TRPBF
- Part No.:
- LT1358CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1358CS8#TRPBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,543
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Product details
Overview
LT1358CS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual high-speed voltage-feedback operational amplifier with 25MHz gain bandwidth, 600V/µs slew rate, and 2.5mA maximum supply current per amplifier. It features matched high-impedance inputs, unity-gain stability, and C-Load™ drive capability for any capacitive load-making it ideal for precision data acquisition systems, active filters, and photodiode amplification.
For engineers reviewing the LT1358CS8#TRPBF datasheet, LT1358CS8#TRPBF pinout, LT1358CS8#TRPBF application, or LT1358CS8#TRPBF equivalent, key selection criteria include its ±15V/±5V/±2.5V supply flexibility, 8nV/√Hz input noise, 115ns 0.1% settling time, and SO-8 package compatibility with space-constrained high-fidelity analog signal paths.
Technical Context
The LT1358CS8#TRPBF employs a hybrid topology combining voltage-feedback architecture with current-feedback slewing behavior-enabling both high DC precision and fast transient response. Its single-stage design and matched NPN/PNP input stage deliver low input bias current (≤500nA), low offset drift (5–8µV/°C), and excellent channel separation (≥98dB).
Stability is ensured across all capacitive loads via internal compensation that dynamically adjusts phase margin; output impedance remains ≤0.3Ω at 100kHz, supporting direct coaxial cable driving with optional 75Ω series termination for pulse fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 25MHz typical at ±15V - enables stable closed-loop operation up to 25MHz in unity-gain configuration |
| Slew Rate | 600V/µs typical at ±15V - supports full-scale 10V step settling in ≤115ns to 0.1% |
| Input Noise Voltage | 8nV/√Hz at 10kHz - preserves SNR in low-level sensor and photodiode front-ends |
| Input Offset Voltage | 0.6mV max at ±15V - ensures <0.004% gain error in 12-bit DAC I-to-V conversion |
| Supply Current | 2.5mA max per amplifier at ±15V - allows dual-channel high-speed operation within 5mA total budget |
| Output Swing | ±12.5V into 500Ω at ±15V - drives standard industrial ±10V analog I/O without external buffers |
| Common-Mode Range | ±13.4V at ±15V supply - accommodates rail-to-rail input signals in ±12V systems |
Pinout & Package
LT1358CS8#TRPBF is housed in an 8-pin plastic SO (SO-8) package with standard narrow-body dimensions (3.9mm × 4.9mm), RoHS-compliant lead-free finish, and tape-and-reel packaging (#TRPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN A | Inverting input of Amplifier A - high-impedance node (≥35MΩ) with matched PNP/NPN structure for low IB and IOS |
| 2 | +IN A | Non-inverting input of Amplifier A - symmetrical to Pin 1; balanced source resistance recommended for DC accuracy |
| 3 | V+ | Positive supply rail - accepts ±2.5V to ±15V; total supply voltage ≤36V |
| 4 | –IN B | Inverting input of Amplifier B - electrically isolated from Amplifier A; channel separation ≥98dB |
| 5 | +IN B | Non-inverting input of Amplifier B - identical AC/DC specs as Pins 1–2 |
| 6 | OUT B | Amplifier B output - capable of ±3V into 150Ω (±5V supplies) or ±12.5V into 500Ω (±15V supplies) |
| 7 | V– | Negative supply rail - referenced to system ground; supports split or single-supply configurations with level-shifting |
| 8 | OUT A | Amplifier A output - same drive strength and settling performance as Pin 6; independent thermal path |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ Drive Capability | Stable with unlimited capacitive load - eliminates need for external isolation resistors in buffer or cable-drive applications |
| Unity-Gain Stability | No external compensation required - simplifies layout and reduces BOM count in gain-of-1 instrumentation stages |
| High Slew Rate + Low Noise | 600V/µs + 8nV/√Hz - enables wideband photodiode amplification without sacrificing dynamic range |
| Wide Supply Range | ±2.5V to ±15V - supports legacy ±15V industrial systems and modern low-voltage embedded designs |
| Fast Settling | 115ns to 0.1% on 10V step - meets timing requirements for 10MSPS data acquisition front-ends |
Applications
| Photodiode Amplifier | DAC I-to-V Converter |
|---|---|
Use Scenario: Converting weak current from a silicon photodiode (e.g., 10nA–10µA range) into a precise, low-noise voltage signal for optical sensing. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable gain; operates in closed-loop with feedback resistor and capacitor. Use Value: 8nV/√Hz input noise and 600V/µs slew rate preserve signal integrity for fast-pulsed laser detection while rejecting ambient interference. | Use Scenario: Converting digital audio or control DAC outputs (e.g., 16-bit, ±10V range) into analog voltage for actuator drivers or calibration references. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with low VOS (≤0.6mV) and high open-loop gain (≥20V/mV). Use Value: Ensures <0.006% linearity error over full scale and settles within 115ns-critical for multi-channel synchronized waveform generation. |
| Active Filter Stage | Data Acquisition Buffer |
Use Scenario: Implementing a 4th-order Butterworth anti-aliasing filter (e.g., 200kHz cutoff) in medical ECG or test equipment signal chains. IC Role / Device Role / Timing Role: Dual op-amp configured as two cascaded 2nd-order sections; each amplifier handles one stage. Use Value: 25MHz GBW and low distortion (<0.001% THD at 10kHz) maintain filter shape accuracy and prevent passband ripple. | Use Scenario: Isolating and driving ADC inputs in multichannel data loggers handling ±10V industrial sensor signals. IC Role / Device Role / Timing Role: High-impedance input buffer with rail-compatible common-mode range and fast settling. Use Value: ±13.4V input range and ±12.5V output swing into 500Ω eliminate level-shifting circuitry; 0.01% settling in 220ns supports 1MSPS sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1362CS8#TRPBF | Higher 50MHz GBW and 800V/µs slew rate; higher 4mA supply current per amplifier | Better suited for >30MHz signal conditioning but consumes >60% more power | Select when bandwidth headroom >25MHz is required and thermal budget allows |
| LT1355CS8#TRPBF | Lower 12MHz GBW and 400V/µs slew rate; lower 1mA supply current per amplifier | Optimized for battery-powered portable instruments where speed is secondary to power efficiency | Select when 12MHz bandwidth suffices and sub-2.5mA per channel is mandatory |
Compared with LT1358CS8#TRPBF, LT1362CS8#TRPBF trades higher power for greater bandwidth and slew rate-ideal for RF IF stages-while LT1355CS8#TRPBF prioritizes ultra-low quiescent current at the expense of speed, making it suitable for always-on sensor nodes.
Availability
LT1358CS8#TRPBF is available at Aetrix Electronics and suitable for precision data acquisition systems, active filter modules, photodiode amplifier circuits, and DAC I-to-V converter designs requiring stable component supply across industrial temperature ranges.
Supply support for LT1358CS8#TRPBF 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 full product support, manufacturing, and qualification for legacy Linear op amps including the LT1358 family.
The LT1358 series was designed as a dual high-speed, low-power precision op amp targeting demanding analog signal conditioning in data acquisition, instrumentation, and communications infrastructure-balancing speed, noise, and supply efficiency in a compact SO-8 package.
FAQ
What supply voltage ranges does the LT1358CS8#TRPBF support?
The LT1358CS8#TRPBF operates from ±2.5V to ±15V dual supplies (total supply voltage ≤36V), with full specifications guaranteed across this range. At ±2.5V, it delivers 20MHz gain bandwidth and 100V/µs slew rate; at ±15V, it achieves 25MHz and 600V/µs. This flexibility allows use in both legacy industrial ±15V systems and modern low-voltage embedded designs without performance compromise.
Is the LT1358CS8#TRPBF stable with large capacitive loads?
Yes-the LT1358CS8#TRPBF incorporates C-Load™ technology and is unconditionally stable with any capacitive load, including direct coaxial cable driving. Unlike conventional op amps, it uses adaptive internal compensation that maintains phase margin even with 1000pF+ loads. For optimal pulse fidelity with 75Ω coax, place a 75Ω series resistor at the LT1358CS8#TRPBF output and terminate the far end with 75Ω to ground.
What is the input offset voltage specification for LT1358CS8#TRPBF at room temperature?
The LT1358CS8#TRPBF has a maximum input offset voltage of 0.6mV at ±15V supply and TA = 25°C, with typical value of 0.2mV. Over the full –40°C to +85°C operating range, max VOS rises to 1.3mV. This low offset enables high-accuracy applications like 12-bit DAC I-to-V conversion, where it contributes <0.004% full-scale error at ±10V output.
Can LT1358CS8#TRPBF drive a 500Ω load to ±12.5V?
Yes-the LT1358CS8#TRPBF is specified to deliver ±12.5V minimum output swing into a 500Ω load with ±15V supplies, with typical performance reaching ±13.0V. It sources/sinks ≥25mA per amplifier under these conditions, enabling direct interface with industrial ±10V analog I/O standards without external boost circuitry.
How does the LT1358CS8#TRPBF achieve its high slew rate while maintaining low input bias current?
The LT1358CS8#TRPBF uses a proprietary complementary NPN/PNP input stage that provides first-order bias current cancellation, achieving ≤500nA max IB while enabling 600V/µs slew rate through high-current mirroring into the gain node. The input stage's matched transistors minimize offset current (≤120nA), and the topology decouples slewing behavior from traditional voltage-feedback limitations-delivering current-feedback speed with voltage-feedback precision.
LT1358CS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- 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 (x2 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1358CS8#TRPBF FAQ
1.How can I place an order for LT1358CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1358CS8#TRPBF 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 LT1358CS8#TRPBF reliable?
The price and inventory of LT1358CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1358CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1358CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1358CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1358CS8#TRPBF?
LT1358CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1358CS8#TRPBF 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 LT1358CS8#TRPBF?
For technical support, including LT1358CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1358CS8#TRPBF requirements.
6.How does Aetrix verify that LT1358CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1358CS8#TRPBF 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 LT1358CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1358CS8#TRPBF?
All LT1358CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1358CS8#TRPBF, 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 LT1358CS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1358CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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