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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments LM359N/NOPB

Name: LM359N/NOPB
Brand: Texas Instruments
SKU: LM359N/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM359N/NOPB

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-DIP (0.300", 7.62mm)

Datasheet:: LM359N/NOPB.pdf

Description:: IC OPAMP GP 2 CIRCUIT 14DIP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

LM359N/NOPB from Texas Instruments is a dual, high-speed, programmable current-mode (Norton) amplifier IC designed for wideband video, active filter, and photodiode amplification applications. It delivers 400 MHz gain-bandwidth product at AV = 10–100, 60 V/μs slew rate, and operates from a single 5–22 V supply with input common-mode voltage exceeding V_CC. Its current-differencing architecture enables high-frequency signal conditioning in video distribution and waveform generation circuits.

For engineers reviewing the LM359N/NOPB datasheet, LM359N/NOPB pinout, LM359N/NOPB application, or LM359N/NOPB equivalent, key selection criteria include programmable I_SET-controlled bandwidth/slew rate, dual-channel decompensated topology, ±1° differential phase error at 3.58 MHz, and compatibility with 75 Ω video source termination.

Technical Context

The LM359N/NOPB implements two independent cascode-based current differencing amplifiers optimized for >10 MHz operation. Each channel features user-programmable I_SET(IN) and I_SET(OUT) pins to control input stage current (setting slew rate and GBW), output stage bias (setting sink drive and supply current), and total power dissipation - all while maintaining stable inverting closed-loop gain ≥10.

Its Norton architecture accepts high common-mode input voltages (>V_CC) and provides large inverting output swing (2 mV to V_CC−2 V). External compensation via COMP pins (pins 3 & 13) supports flexible stability tuning for gains <10 or non-inverting configurations, with typical 1–5 pF lead capacitors preserving slew rate performance.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	400 MHz at AV = 10–100; enables flat 25 MHz video passband with 20 dB gain and <0.5% differential gain error at 3.58 MHz.
Slew Rate	60 V/μs at AV = 10–100; supports fast-rising video sync pulses and 10 MHz squarewave generation without distortion.
Supply Voltage Range	5 V to 22 V single supply; allows direct integration into 12 V video systems and industrial 24 V rails with level-shifted biasing.
Input Common-Mode Range	Exceeds V_CC; permits DC-coupled inputs from sources operating above supply rail, e.g., CCD sensor outputs.
Output Voltage Swing	2 mV to V_CC−2 V into 600 Ω; delivers full-swing composite video signals compliant with RS-170/NTSC standards.
Input Bias Current	15 μA typical at 25°C; low enough for high-Z photodiode preamplification without significant dark-current offset.
Operating Temperature	0°C to +70°C; qualified for commercial video equipment, test instrumentation, and industrial signal generators.

Pinout & Package

LM359N/NOPB uses a 14-pin plastic DIP (PDIP) package per package code NFF0014A, with 0.300-inch body width and through-hole mounting. Thermal resistance θ_JA is 100°C/W in still air.

Pin/Terminal	Circuit Role	Design Meaning
1 (ISET(OUT))	Output stage bias current programming	Sets Darlington emitter-follower output sink current; resistor to ground defines class-A output bias and max ~10×ISET(OUT) load drive.
2 (IN1−)	Inverting input of amplifier 1	Current-input node; requires external DC bias current (IIN(+)) for single-supply operation and sets output DC level.
3 (COMP1)	Compensation terminal for amplifier 1	Connects external capacitor to ground for stability tuning; 1–5 pF lead cap preserves slew rate for gains <10.
4 (V−)	Negative supply / ground reference	Ground pin for single-supply operation; internal circuitry referenced to this node.
5 (NC)	No connect	Internally unconnected pin; must remain floating per TI design guidelines.
6 (OUT1)	Inverting output of amplifier 1	Voltage-output node with 2 mV to V_CC−2 V swing; drives 600 Ω video loads directly.
7 (IN1+)	Non-inverting input of amplifier 1	Current-mirror reference input; establishes output DC bias via mirror current matching (AI = 0.9–1.1).
8 (ISET(IN))	Input stage bias current programming	Sets total input stage current (~3×ISET(IN)); directly controls slew rate, GBW, and input resistance (2.5 kΩ typical).
9 (IN2+)	Non-inverting input of amplifier 2	Current-mirror reference for second amplifier; shares same ISET programming as pin 8 for coordinated operation.
10 (OUT2)	Inverting output of amplifier 2	Independent voltage output; enables dual-channel video processing or biquad filter topologies with one IC.
11 (COMP2)	Compensation terminal for amplifier 2	Independent compensation node; allows separate frequency response tuning for each amplifier channel.
12 (IN2−)	Inverting input of amplifier 2	Second current-input node; supports differential configurations or independent signal paths.
13 (V+)	Positive supply input	Accepts 5–22 V DC; powers both amplifiers and internal current mirrors.
14 (NC)	No connect	Internally unconnected pin; must remain floating.

Key Features

Feature	Design Value
User-programmable bandwidth & slew rate	ISET(IN)/ISET(OUT) pins allow real-time optimization of GBW (200–400 MHz) and slew rate (30–60 V/μs) without changing external components.
High common-mode input tolerance	Inputs accept voltages >V_CC, enabling direct coupling from sensors or line drivers operating at higher potentials than the amplifier supply.
Dual-channel decompensated design	Each amplifier is internally compensated for stable operation at inverting gains ≥10, reducing need for external compensation in standard video gain stages.
Low input-referred noise	6 nV/√Hz at f > 1 kHz supports high-fidelity photodiode and RF signal amplification with minimal SNR degradation.
Single-supply video compliance	2 mV to V_CC−2 V output swing into 600 Ω meets NTSC/PAL video level requirements and eliminates need for AC-coupling capacitors.

Applications

Video Signal Distribution	High-Q Active Filtering
Use Scenario: Amplifying and distributing composite NTSC video signals across multiple monitors or recording devices in broadcast infrastructure. IC Role / Device Role / Timing Role: Dual-channel inverting video amplifier providing 20 dB gain, 25 MHz −3 dB bandwidth, and <0.5% differential gain error at 3.58 MHz. Use Value: Maintains color fidelity and sync pulse integrity over long coaxial runs without requiring external equalization or level-shifting circuitry.	Use Scenario: Implementing 2-amplifier biquad filters for audio crossover networks or RF channel selection with Q > 20. IC Role / Device Role / Timing Role: Current-mode integrator core enabling true non-inverting integration with fo × Qo ≤ 5 MHz design limit. Use Value: Reduces component count by 33% versus 3-op-amp topologies while preserving temperature-stable filter response across 0–70°C.
Photodiode Pre-amplification	Waveform Generation
Use Scenario: Converting low-current outputs from high-speed silicon photodiodes (e.g., fiber-optic receivers) into robust voltage signals. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable ISET(IN) setting 15 μA input bias and 60 V/μs slew rate for >10 MHz response. Use Value: Achieves sub-50 ns rise/fall times while minimizing dark-current-induced offset drift through precise mirror-gain matching (ΔAI ≤ 5%).	Use Scenario: Generating TTL-compatible squarewaves, triangle waves, or crystal-controlled sine waves in test equipment and clock synthesis. IC Role / Device Role / Timing Role: High-speed comparator/oscillator core with 40 ns propagation delay and 9.1 MHz sine output (THD < 2.5%). Use Value: Eliminates discrete transistor stages in function generators, reducing board space and improving frequency stability vs. RC-based oscillators.

Video Signal Distribution

High-Q Active Filtering

Use Scenario: Amplifying and distributing composite NTSC video signals across multiple monitors or recording devices in broadcast infrastructure.

IC Role / Device Role / Timing Role: Dual-channel inverting video amplifier providing 20 dB gain, 25 MHz −3 dB bandwidth, and <0.5% differential gain error at 3.58 MHz.

Use Value: Maintains color fidelity and sync pulse integrity over long coaxial runs without requiring external equalization or level-shifting circuitry.

Use Scenario: Implementing 2-amplifier biquad filters for audio crossover networks or RF channel selection with Q > 20.

IC Role / Device Role / Timing Role: Current-mode integrator core enabling true non-inverting integration with fo × Qo ≤ 5 MHz design limit.

Use Value: Reduces component count by 33% versus 3-op-amp topologies while preserving temperature-stable filter response across 0–70°C.

Photodiode Pre-amplification

Waveform Generation

Use Scenario: Converting low-current outputs from high-speed silicon photodiodes (e.g., fiber-optic receivers) into robust voltage signals.

IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable ISET(IN) setting 15 μA input bias and 60 V/μs slew rate for >10 MHz response.

Use Value: Achieves sub-50 ns rise/fall times while minimizing dark-current-induced offset drift through precise mirror-gain matching (ΔAI ≤ 5%).

Use Scenario: Generating TTL-compatible squarewaves, triangle waves, or crystal-controlled sine waves in test equipment and clock synthesis.

IC Role / Device Role / Timing Role: High-speed comparator/oscillator core with 40 ns propagation delay and 9.1 MHz sine output (THD < 2.5%).

Use Value: Eliminates discrete transistor stages in function generators, reducing board space and improving frequency stability vs. RC-based oscillators.

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-mode amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM3900N/NOPB	Lower GBW (2.5 MHz), no ISET programming, fixed 30 V/μs slew rate, wider input common-mode range (±13 V).	Best for low-frequency general-purpose AC amplification where programmability and video bandwidth are unnecessary.	Select LM3900N/NOPB only when cost sensitivity outweighs bandwidth needs and external compensation is acceptable.
LMH6629MA/NOPB	Voltage-mode architecture, 1.5 GHz GBW, 1100 V/μs slew rate, 5 V supply only, no current-differencing inputs.	Suitable for ultra-high-speed ADC driver or RF IF amplification but lacks Norton input's high common-mode tolerance.	Choose LMH6629MA/NOPB when >100 MHz small-signal bandwidth is required and input common-mode exceeds 5 V.

Compared with LM359N/NOPB, LM3900N/NOPB trades programmability and video-grade specs for simplicity and legacy compatibility, while LMH6629MA/NOPB offers extreme speed at the cost of Norton architecture benefits like rail-to-rail common-mode input and current-input flexibility.

Availability

LM359N/NOPB is available at Aetrix Electronics and suitable for video distribution systems, active filter modules, photodiode receiver designs, and waveform generator circuits requiring stable component supply with consistent electrical performance across production batches.

Supply support for LM359N/NOPB 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 50 years of innovation in high-performance amplifiers and interface solutions.

The LM359N/NOPB belongs to TI's legacy high-speed current-mode amplifier product line, engineered specifically for demanding video, instrumentation, and wideband signal conditioning applications where programmable bandwidth and high common-mode input capability are critical.

FAQ

What is the maximum recommended supply voltage for LM359N/NOPB?

The absolute maximum supply voltage for LM359N/NOPB is 22 VDC. Operating continuously at this limit risks exceeding the device's 750 mW power dissipation rating in the PDIP package, especially with high ISET currents. For reliable long-term operation, TI recommends staying below 18 V with adequate heatsinking or airflow when ISET(IN) and ISET(OUT) are set above 0.3 mA. The LM359N/NOPB datasheet specifies thermal resistance θ_JA = 100°C/W in still air, so derating is essential at elevated ambient temperatures.

Can LM359N/NOPB be used with split supplies?

Yes, LM359N/NOPB can operate with split supplies (e.g., ±11 V), but TI explicitly notes that it has no negative supply rejection - meaning noise or ripple on the negative rail directly modulates performance. The device is optimized for single-supply use with inputs biased above ground. When using split supplies, ensure the negative rail is exceptionally well-regulated and decoupled, and avoid grounding the V− pin unless both rails are symmetric and stable. The LM359N/NOPB's input common-mode range extends below ground only to −0.7 V, so negative input excursions require current limiting.

How does ISET programming affect LM359N/NOPB's noise performance?

ISET(IN) directly scales the input stage current, which governs both slew rate and input-referred voltage noise. At ISET(IN) = 0.5 mA, LM359N/NOPB achieves its specified 6 nV/√Hz noise floor above 1 kHz. Reducing ISET(IN) lowers power consumption but increases noise - e.g., at 0.1 mA, noise rises to ~12 nV/√Hz due to reduced transconductance. The LM359N/NOPB's noise is dominated by the input transistor's thermal noise, not the current mirror, so mirror gain accuracy (0.9–1.1) has negligible impact on noise density.

Is LM359N/NOPB pin-compatible with other dual Norton amplifiers?

No, LM359N/NOPB is not pin-compatible with earlier Norton amplifiers like LM3900N/NOPB. While both use 14-pin PDIP packages, LM359N/NOPB reassigns pins 1 (ISET(OUT)), 3 (COMP1), 8 (ISET(IN)), 11 (COMP2), and 14 (NC) for programmability and compensation - functions absent in LM3900N/NOPB. Direct replacement would require PCB layout changes. The LM359N/NOPB's pinout is unique to its programmable architecture and documented in TI's SNOSBT4C datasheet Figure 1.

What is the minimum load resistance LM359N/NOPB can drive at full output swing?

LM359N/NOPB guarantees full output swing (2 mV to V_CC−2 V) into 600 Ω loads per the datasheet's Electrical Characteristics table. Driving lower impedances - such as 75 Ω video lines - is possible but requires external series termination to prevent instability and slew-rate limiting. TI's Typical Application circuits show 75 Ω source termination with 750 Ω feedback resistors, confirming LM359N/NOPB's suitability for 75 Ω systems when properly configured. Sustained 75 Ω loading without termination risks thermal overload in the PDIP package.

LM359N/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-DIP (0.300", 7.62mm)

Packaging:: Tube

Product Status:: Obsolete

Amplifier Type:: General Purpose

Number of Circuits:: 2

Output Type:: -

Slew Rate:: 60V/µs

Gain Bandwidth Product:: 400 MHz

-3db Bandwidth:: -

Current - Input Bias:: 8 µA

Voltage - Input Offset:: -

Current - Supply:: 18.5mA (x2 Channels)

Current - Output / Channel:: 40 mA

Voltage - Supply Span (Min):: 5 V

Voltage - Supply Span (Max):: 22 V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 14-PDIP

LM359N/NOPB FAQ

1.How can I place an order for LM359N/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LM359N/NOPB 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 LM359N/NOPB reliable?

The price and inventory of LM359N/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM359N/NOPB is usually 5 days.

3.What payment methods are accepted for LM359N/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM359N/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM359N/NOPB?

LM359N/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM359N/NOPB 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 LM359N/NOPB?

For technical support, including LM359N/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM359N/NOPB requirements.

6.How does Aetrix verify that LM359N/NOPB is sourced from the original manufacturer or authorized distributors?

All LM359N/NOPB 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 LM359N/NOPB meets industry standards.

7.What is the process for return or replacement of LM359N/NOPB?

All LM359N/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM359N/NOPB, 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 LM359N/NOPB part is unused and in its original packaging.

Return procedure for LM359N/NOPB:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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