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Analog Devices Inc. LT1354CN8#PBF
- Part No.:
- LT1354CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1354CN8#PBF.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:674
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Product details
Overview
LT1354CN8#PBF from Analog Devices (formerly Linear Technology) is a single, high-speed, voltage-feedback operational amplifier optimized for wideband signal conditioning in precision data acquisition and active filtering. It delivers 12 MHz gain-bandwidth, 400 V/µs slew rate, 10 nV/√Hz input noise, ±12 V output swing into 500 Ω at ±15 V supplies, and unity-gain stability with any capacitive load - enabling direct coaxial cable driving in photodiode amplifier and video buffer applications.
For engineers reviewing the LT1354CN8#PBF datasheet, LT1354CN8#PBF pinout, LT1354CN8#PBF application, or LT1354CN8#PBF equivalent, key selection criteria include its C-load stability, low 1.25 mA supply current at ±15 V, 800 µV max input offset voltage, 230 ns 0.1% settling time, and compatibility with ±2.5 V to ±15 V dual supplies across –40°C to +85°C.
Technical Context
The LT1354CN8#PBF employs a proprietary voltage-feedback topology with current-feedback slewing behavior, achieved via complementary NPN/PNP input buffers driving an 800 Ω resistor into a high-impedance gain node. Its internal compensation dynamically adapts to capacitive loads by sensing the output pole and adding frequency-dependent phase margin - ensuring stability without external components.
This architecture enables exceptional settling performance (230 ns to 0.1%) and wideband linearity while maintaining low DC errors: 70 nA max input offset current, 300 nA max input bias current, and 97 dB typical CMRR at ±12 V common-mode voltage. It is specified across ±2.5 V, ±5 V, and ±15 V supplies with guaranteed operation from –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 12 MHz (typ) at ±15 V - supports stable closed-loop gain ≥1 up to ~12 MHz; usable in 10-bit+ ADC driver stages with <0.1% gain error at 1 MHz. |
| Slew Rate | 400 V/µs (typ) at ±15 V, AV = –2 - enables full-scale 10 V step response in <25 ns; critical for fast-settling multiplexed DAQ systems. |
| Input Noise Voltage | 10 nV/√Hz at 10 kHz - ensures <1 µV RMS integrated noise in 100 kHz bandwidth; suitable for low-level sensor amplification. |
| Input Offset Voltage | 0.8 mV (max) at ±15 V - allows ≤8 mV total error in unity-gain buffer with 10 V input; supports 12-bit accuracy without trimming. |
| Output Swing | ±12.5 V (min) into 500 Ω at ±15 V - drives standard 50 Ω/75 Ω cables with minimal headroom loss; eliminates need for rail-to-rail output stages. |
| Supply Current | 1.25 mA (max) at ±15 V - enables low-power high-speed operation; draws only 2.5 mW per MHz of GBW, outperforming legacy 12 MHz op-amps by >3× efficiency. |
| Capacitive Load Stability | Stable with any CL (0–10,000 pF) - removes need for isolation resistors or external compensation in buffer, filter, and cable-driver designs. |
Pinout & Package
N8 package: 8-lead plastic DIP (0.300" width), through-hole mount, JEDEC MS-001 compliant. RoHS-compliant lead finish (matte tin over nickel). Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | Null Offset Adjust | Connect 10 kΩ potentiometer wiper to Pin 1, ends to V+ (Pin 8) and V– (Pin 4); adjusts input offset to <50 µV for precision DC-coupled systems. |
| 2 | Inverting Input (–IN) | Differential input node; accepts ±10 V transient differential voltage; requires balanced source impedance for min. offset current error. |
| 3 | Non-Inverting Input (+IN) | Differential input node; same transient rating as Pin 2; base of complementary NPN/PNP pair enabling low IB and IOS. |
| 4 | Negative Supply (V–) | Connect to system ground or negative rail; supports operation down to –15 V; input common-mode range extends to V– + 0.5 V (min). |
| 5 | No Connect (NC) | Internally unused; must be left floating or tied to GND - no electrical function; avoids unintended coupling in high-frequency layouts. |
| 6 | Output (VOUT) | Class-AB output stage; delivers ±24 mA short-circuit current; drives 150 Ω to ±2.5 V on ±5 V supplies; stable into coaxial cable. |
| 7 | Positive Supply (V+) | Connect to system positive rail; supports up to +15 V; input common-mode range extends to V+ – 1.1 V (min) at ±2.5 V supplies. |
Key Features
| Feature | Design Value |
|---|---|
| C-Load™ Stability | Guaranteed stable with 0–10,000 pF capacitive loads - eliminates external compensation networks in video drivers, anti-alias filters, and photodiode transimpedance amps. |
| Low Input Bias Current | 300 nA max (±2.5 V to ±15 V) - enables high-Z sensor interfaces (e.g., pH electrodes, piezoelectric sensors) without significant DC error or drift. |
| Fast Settling Time | 230 ns to 0.1% for 10 V step - meets timing budgets in 1 MSPS+ SAR ADC front-ends and multiplexed channel systems. |
| Wide Supply Range | ±2.5 V to ±15 V dual supply - supports both low-voltage portable instrumentation and industrial ±12 V systems without redesign. |
| High DC Gain | 12 V/mV min (12,000 V/V) at RL = 1 kΩ - ensures <0.01% gain error in precision gain blocks and active filter integrators. |
Applications
| Photodiode Amplifier | Active Filter Stage |
|---|---|
|
Use Scenario: Amplifying low-current signals from silicon photodiodes in spectrophotometers and laser power meters. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 MΩ–100 MΩ feedback; provides low-noise, high-bandwidth conversion of photocurrent to voltage. Use Value: 10 nV/√Hz input noise and C-load stability allow direct connection to long PCB traces or coaxial cables without peaking, preserving pulse fidelity in pulsed-light detection. |
Use Scenario: Implementing 4th-order Butterworth low-pass filters in medical ECG front-ends and test equipment. IC Role / Device Role / Timing Role: Unity-gain stable Sallen-Key or multiple-feedback topology op-amp; sets cutoff frequency and roll-off slope with minimal phase distortion. Use Value: 12 MHz GBW and 230 ns settling ensure <0.01% group delay variation across 100 kHz passband, critical for waveform integrity in diagnostic signal chains. |
| Data Acquisition Buffer | Video Line Driver |
|
Use Scenario: Driving multiplexed analog inputs of 12-bit SAR ADCs in automated test equipment. IC Role / Device Role / Timing Role: High-speed unity-gain buffer isolating switch capacitance from ADC sample capacitor; settles before acquisition window closes. Use Value: 230 ns 0.1% settling time guarantees full accuracy at 1 MSPS sampling rates; low 1.25 mA supply current minimizes thermal drift in dense channel layouts. |
Use Scenario: Driving 75 Ω coaxial video lines in broadcast monitors and machine vision cameras. IC Role / Device Role / Timing Role: Cable driver with matched output impedance; handles composite video (3.58 MHz) and digital video sync pulses. Use Value: ±12 V swing into 500 Ω and 2.2% differential gain error enable NTSC/PAL compliance; C-load stability permits direct termination without series resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1355CS8#PBF | Dual-channel version; identical GBW (12 MHz), slew rate (400 V/µs), and C-load stability; 1.25 mA per amplifier. | Reduces board space in multi-channel DAQ or stereo audio; requires dual-supply routing for both channels. | Select when two matched high-speed amps are needed in one package - avoids inter-channel skew and saves layout area vs. two LT1354CN8#PBF units. |
| OPA637BP | Higher GBW (80 MHz), higher slew rate (350 V/µs), but 10× higher supply current (12 mA); not C-load stable - requires isolation resistor for >100 pF loads. | Better for RF IF amplification or ultra-fast pulse shaping; unsuitable for direct cable driving or photodiode buffers without compensation. | Choose only when >50 MHz bandwidth is mandatory and power budget allows; avoid where capacitive load stability or low IQ are design priorities. |
Compared with LT1355CS8#PBF, the LT1354CN8#PBF offers single-channel optimization with identical AC/DC specs and lower thermal density; versus OPA637BP, it trades raw speed for 10× lower power, guaranteed C-load operation, and superior DC precision - making it optimal for battery-powered or thermally constrained wideband analog signal paths.
Availability
LT1354CN8#PBF is available at Aetrix Electronics and suitable for photodiode amplifiers, active filter stages, and data acquisition buffers requiring stable component supply with guaranteed long-term availability and traceable lot control.
Supply support for LT1354CN8#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, inheriting its legacy of high-performance analog ICs. Linear pioneered advanced bipolar complementary processes for precision, high-speed op-amps.
The LT1354CN8#PBF belongs to Linear's "C-Load" op-amp family, designed specifically for applications demanding unconditional stability with capacitive loads - targeting video, instrumentation, and data acquisition systems where layout flexibility and signal fidelity are critical.
FAQ
What is the maximum capacitive load the LT1354CN8#PBF can drive without oscillation?
The LT1354CN8#PBF is explicitly characterized and guaranteed stable with any capacitive load from 0 pF to 10,000 pF, including coaxial cables and PCB trace capacitance. This C-Load™ capability eliminates the need for series isolation resistors or external compensation networks in buffer and driver applications - a key differentiator versus conventional voltage-feedback op-amps.
Does the LT1354CN8#PBF require external nulling components for precision DC performance?
Yes - the LT1354CN8#PBF features dedicated offset null pins (1 and 8) that accept a 10 kΩ potentiometer to trim input offset voltage below 50 µV. While the device specifies 0.8 mV max VOS without trimming, this nulling circuit is recommended for applications demanding <12-bit DC accuracy in unity-gain configurations or low-frequency integrators.
Can the LT1354CN8#PBF operate from a single +5 V supply?
No - the LT1354CN8#PBF is a dual-supply operational amplifier requiring both positive and negative rails. It is specified for ±2.5 V, ±5 V, and ±15 V operation. For single-supply applications, consider the LT1358 or newer ADI rail-to-rail input/output op-amps; the LT1354CN8#PBF cannot bias correctly or achieve full output swing with only a +5 V and ground connection.
What is the thermal resistance (θJA) of the LT1354CN8#PBF in its N8 package?
The LT1354CN8#PBF in the 8-lead PDIP (N8) package has a junction-to-ambient thermal resistance (θJA) of 130°C/W under standard JEDEC test conditions (single-layer board, 1 in² copper pad). This value assumes no added heatsinking; designers must verify junction temperature does not exceed 150°C under worst-case power dissipation (e.g., ±15 V supplies, heavy output loading).
How does the slew rate of the LT1354CN8#PBF vary with supply voltage and gain configuration?
The LT1354CN8#PBF's slew rate is supply- and gain-dependent: 400 V/µs (typ) at ±15 V, AV = –2; 120 V/µs (typ) at ±5 V, AV = –2. It increases in lower-gain configurations (e.g., unity gain) due to larger differential input steps for the same output swing - a direct result of its current-driven gain node architecture, as confirmed in the "Slew Rate vs Input Level" curve (Fig G24).
LT1354CN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- C-Load™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 400V/µs
- Gain Bandwidth Product:
- 12 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 1mA
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1354CN8#PBF FAQ
1.How can I place an order for LT1354CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1354CN8#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 LT1354CN8#PBF reliable?
The price and inventory of LT1354CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1354CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1354CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1354CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1354CN8#PBF?
LT1354CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1354CN8#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 LT1354CN8#PBF?
For technical support, including LT1354CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1354CN8#PBF requirements.
6.How does Aetrix verify that LT1354CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1354CN8#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 LT1354CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1354CN8#PBF?
All LT1354CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1354CN8#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 LT1354CN8#PBF part is unused and in its original packaging.
Return procedure for LT1354CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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