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Analog Devices Inc. LT1358CN8#PBF
- Part No.:
- LT1358CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1358CN8#PBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:202
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Product details
Overview
LT1358CN8#PBF 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 LT1358CN8#PBF datasheet, LT1358CN8#PBF pinout, LT1358CN8#PBF application, or LT1358CN8#PBF equivalent, key selection criteria include its 115ns 0.1% settling time on ±15V supplies, ±12.5V output swing into 500Ω, 8nV/√Hz input noise, and PDIP-8 package compatibility with legacy through-hole layouts.
Technical Context
The LT1358CN8#PBF employs a hybrid topology combining voltage-feedback architecture with current-feedback slewing behavior, enabling both high DC precision and fast transient response. Its input stage uses complementary NPN/PNP emitter followers for first-order bias current cancellation, while internal bootstrapped RC compensation ensures unconditional stability with capacitive loads up to 10,000pF.
This design delivers 20V/mV minimum DC gain at RL = 1kΩ and maintains 98dB channel separation at ±15V, supporting simultaneous high-fidelity signal conditioning in dual-channel instrumentation without crosstalk-induced error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 25MHz - supports closed-loop operation up to 25MHz at unity gain without phase margin collapse. |
| Slew Rate | 600V/µs - enables full-scale 10V step response within 115ns to 0.1% (±15V supplies), critical for fast DAC I-to-V conversion. |
| Input Noise Voltage | 8nV/√Hz - low-noise performance preserves SNR in photodiode and sensor front-end amplification. |
| Input Offset Voltage | ≤0.6mV (±15V) - ensures ≤60µV error in 100× gain configurations, suitable for precision instrumentation. |
| Output Swing | ±12.5V into 500Ω - drives standard ±12V analog interfaces directly without level-shifting circuitry. |
| Supply Current | 2.5mA per amplifier - balances speed and power efficiency for dual-channel high-speed systems. |
| Capacitive Load Drive | C-Load™ stable - eliminates need for external isolation resistors when driving coaxial cables or ADC input capacitance. |
Pinout & Package
LT1358CN8#PBF is housed in an 8-pin plastic DIP (N8) package with 0.300-inch width, compatible with standard through-hole PCB assembly and socketing. Thermal resistance θJA = 130°C/W enables operation up to 85°C ambient without forced cooling under typical load conditions.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | Differential input node for Channel A; accepts ±12V common-mode range on ±15V supplies. |
| 2 | Non-inverting Input A | High-impedance (≥35MΩ) input for Channel A; enables precision differential sensing. |
| 3 | Positive Supply (V+) | Accepts +2.5V to +15V; total supply voltage must not exceed 36V across V+ and V–. |
| 4 | Negative Supply (V–) | Accepts –2.5V to –15V; supports rail-to-rail input common-mode range relative to supplies. |
| 5 | Non-inverting Input B | Independent high-Z input for Channel B; identical specs to Pin 2 for dual-channel symmetry. |
| 6 | Inverting Input B | Differential input node for Channel B; matches Pin 1 performance and layout sensitivity. |
| 7 | Output B | Capable of sourcing/sinking 25mA; drives 150Ω loads to ±3V on ±5V supplies. |
| 8 | Output A | Full-swing output with 0.3Ω output impedance at 100kHz; optimized for low-distortion signal delivery. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-Gain Stable | No external compensation required - simplifies design of buffers, followers, and gain-of-one signal paths. |
| C-Load™ Drive Capability | Stable with unlimited capacitive load - eliminates series R needed for ADC input or cable driving. |
| 115ns 0.1% Settling Time | Enables 8.7MSps sampling in data acquisition systems without aperture uncertainty penalty. |
| 8nV/√Hz Input Noise | Maintains >80dB SNR for 10kHz signals, critical for low-level sensor and photodiode amplification. |
| ±12.5V Output Swing into 500Ω | Direct interface to ±12V industrial control and test equipment without level-shifting components. |
Applications
| Active Filter Design | Data Acquisition Front-End |
|---|---|
Use Scenario: 4th-order Butterworth filter at 200kHz for anti-aliasing prior to 1MSPS SAR ADC. IC Role / Device Role / Timing Role: Dual op-amp implements two 2-pole stages with matched gain and phase response. Use Value: 25MHz GBW and 600V/µs slew rate preserve filter group delay flatness and step response fidelity. | Use Scenario: Simultaneous sampling of two 16-bit sensor channels with <1LSB error budget. IC Role / Device Role / Timing Role: Dual amplifier conditions differential sensor outputs before multiplexed ADC conversion. Use Value: 115ns 0.1% settling ensures full-scale transitions settle before 1µs sample window closes. |
| Photodiode Transimpedance Amplifier | DAC Current-to-Voltage Converter |
Use Scenario: Low-noise amplification of 100pA–10nA photocurrent from scientific-grade photodiodes. IC Role / Device Role / Timing Role: Inverting transimpedance configuration with feedback resistor ≥10MΩ. Use Value: 8nV/√Hz input noise and 600µV max VOS minimize dark-current-induced offset drift. | Use Scenario: Converting 16-bit current-output DAC (e.g., AD5422) to precision ±10V analog output. IC Role / Device Role / Timing Role: Single-supply or dual-supply I-to-V converter with programmable gain. Use Value: C-Load™ stability allows direct connection to DAC's output capacitance without ringing. |
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 |
|---|---|---|---|
| LT1360CN8#PBF | 50MHz GBW, 800V/µs slew rate, 4mA supply current per amp - higher speed but double power draw. | Better for >30MHz closed-loop bandwidth needs; less suitable for battery-powered DAQ due to current. | Select when bandwidth >30MHz is mandatory and thermal headroom permits higher dissipation. |
| LT1355CN8#PBF | 12MHz GBW, 400V/µs slew rate, 1mA supply current per amp - lower speed, lower power, same package. | Ideal for 100kHz–1MHz instrumentation where 25MHz is over-spec; superior battery life. | Choose for cost- and power-sensitive designs where 12MHz GBW meets system requirements. |
Compared with LT1358CN8#PBF, LT1360CN8#PBF trades 2× supply current for 2× bandwidth and slew rate, while LT1355CN8#PBF reduces power by 60% at the expense of bandwidth - enabling precise trade-off selection based on system-level speed vs. efficiency priorities.
Availability
LT1358CN8#PBF is available at Aetrix Electronics and suitable for data acquisition systems, active filter modules, photodiode amplifier circuits, and DAC I-to-V converter designs requiring stable component supply and long-term industrial availability.
Supply support for LT1358CN8#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 full product support, datasheet documentation, and manufacturing continuity for all Linear-branded precision analog ICs.
The LT1358 family was designed specifically for high-fidelity, high-speed signal conditioning in dual-channel instrumentation - emphasizing low noise, fast settling, and unconditional capacitive-load stability without external compensation.
FAQ
What is the maximum capacitive load the LT1358CN8#PBF can drive without oscillation?
The LT1358CN8#PBF is C-Load™ stable and remains unconditionally stable with any capacitive load, including 10,000pF coaxial cables. Unlike conventional op-amps, it requires no series isolation resistor at the output - verified across all supply voltages (±2.5V to ±15V) and temperatures (–40°C to 85°C). This capability is intrinsic to its bootstrapped internal compensation network.
Does the LT1358CN8#PBF support single-supply operation?
Yes, the LT1358CN8#PBF supports single-supply operation with input common-mode range extending to within 1.1V of V– (e.g., 0.5V above ground on +2.5V supply) and output swing to within 1.2V of either rail. For true rail-to-rail input/output, external level-shifting or a dedicated RRIO op-amp is required - the LT1358CN8#PBF is optimized for dual-supply precision, not single-supply convenience.
What is the guaranteed input offset voltage specification for LT1358CN8#PBF over temperature?
The LT1358CN8#PBF guarantees ≤0.8mV input offset voltage at ±15V supplies over the commercial temperature range (0°C to 70°C), and ≤1.3mV over the extended industrial range (–40°C to 85°C). Input offset drift is specified at 5–8µV/°C, enabling predictable calibration over operating temperature.
Can the LT1358CN8#PBF be used in inverting amplifier configurations with gain <1?
Yes, the LT1358CN8#PBF is unity-gain stable and fully functional in inverting configurations down to gains of 0.1 (e.g., 10kΩ feedback / 100kΩ input resistor). Its slew rate increases at lower gains due to larger input differential voltage for a given output step - confirmed by the "Slew Rate vs Input Level" curve in the datasheet (Figure G24).
How does the LT1358CN8#PBF compare to the LT1357 in terms of pin compatibility and performance?
The LT1358CN8#PBF is not pin-compatible with the LT1357 (single-channel version), which uses an 8-pin SO or PDIP but assigns pins differently - e.g., LT1357 Pin 1 is V+, while LT1358CN8#PBF Pin 1 is –IN A. Performance-wise, both share identical GBW (25MHz) and slew rate (600V/µs), but the LT1358CN8#PBF provides two independent amplifiers in one package versus the LT1357's single channel.
LT1358CN8#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:
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1358CN8#PBF FAQ
1.How can I place an order for LT1358CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1358CN8#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 LT1358CN8#PBF reliable?
The price and inventory of LT1358CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1358CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1358CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1358CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1358CN8#PBF?
LT1358CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1358CN8#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 LT1358CN8#PBF?
For technical support, including LT1358CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1358CN8#PBF requirements.
6.How does Aetrix verify that LT1358CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1358CN8#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 LT1358CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1358CN8#PBF?
All LT1358CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1358CN8#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 LT1358CN8#PBF part is unused and in its original packaging.
Return procedure for LT1358CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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