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

Texas Instruments LM359M/NOPB

Name: LM359M/NOPB
Brand: Texas Instruments
SKU: LM359M/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM359M/NOPB

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: LM359M/NOPB.pdf

Description:: IC OPAMP GP 2 CIRCUIT 14SOIC

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Product details

Overview

LM359M/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 user-programmable I_SET pins enable independent optimization of bandwidth, slew rate, bias current, and power dissipation per channel.

For engineers reviewing the LM359M/NOPB datasheet, LM359M/NOPB pinout, LM359M/NOPB application, or LM359M/NOPB equivalent, key selection considerations include its current-differencing architecture, external compensation flexibility, DC biasing via mirror current control, and verified performance in 3.58 MHz NTSC video signal paths with <1° differential phase error.

Technical Context

The LM359M/NOPB implements two decompensated current-differencing amplifiers using cascode gain stages to achieve high-frequency operation beyond conventional op-amps. Each channel features separate I_SET(IN) and I_SET(OUT) pins that directly program input stage current (setting slew rate and GBW) and output stage bias (setting sink drive and quiescent current).

Its Norton architecture enables high common-mode input voltage (>V_CC), rail-to-rail output swing (2 mV to V_CC−2 V), and stable inverting closed-loop gain ≥10 without external compensation. For gains <10 or non-inverting configurations, external lead capacitance (1–5 pF) or COMP-pin capacitance is required to maintain phase margin.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	400 MHz at AV = 10–100 (I_SET = 0.5 mA); sets maximum usable closed-loop bandwidth for fixed-gain video or filter designs
Slew Rate	60 V/μs at AV = 10–100 (I_SET = 0.5 mA); supports clean 10 MHz squarewave reproduction without distortion
Supply Voltage Range	5 V to 22 V single supply; enables direct integration into legacy 12 V or 15 V analog video systems
Input Common-Mode Range	Exceeds V_CC; allows direct connection to signals above supply rail (e.g., photodiode anodes)
Output Voltage Swing	2 mV to V_CC−2 V into 600 Ω; provides >10 Vpp dynamic range at 12 V supply for broadcast-level video drive
Mirror Gain Accuracy	0.9–1.1 μA/μA over temperature; ensures predictable DC biasing and gain stability in AC-coupled amplifier topologies
Input Bias Current	8–15 μA (typ) at 25°C; low enough for high-Z photodiode and precision filter node interfaces
Low-Frequency Noise	6 nV/√Hz above 1 kHz; suitable for low-noise preamplification in optical sensing front-ends

Pinout & Package

LM359M/NOPB is housed in a 14-pin plastic SOIC (Small Outline Integrated Circuit) package (Package Code NFF0014A), measuring 8.65 mm × 3.91 mm × 1.75 mm, with standard 1.27 mm pitch and gull-wing leads. Thermal resistance θ_JA is 100°C/W in still air.

Pin/Terminal	Circuit Role	Design Meaning
1 (I_SET(OUT))	Output stage bias current source	Sets Darlington emitter-follower output class-A bias; determines max sink current (~10× I_SET(OUT)) and quiescent power
2 (IN1−)	Inverting current input	Main signal input node; low impedance (~2.5 kΩ); requires external DC bias via mirror current
3 (COMP1)	Compensation terminal	Connects to external capacitor for stability tuning; internal dominant pole adjustment point
4 (V−)	Negative supply / ground reference	Ground pin for single-supply operation; return path for all bias and signal currents
5 (NC)	No connect	Internally unconnected; must remain floating-no external connection permitted
6 (OUT1)	Amplifier 1 output	Emitter-follower output capable of 2 mV to V_CC−2 V swing into 600 Ω
7 (IN1+)	Non-inverting current input (mirror reference)	Sets DC output level via mirror current; input bias current ≈3×I_SET(IN)
8 (I_SET(IN))	Input stage bias current sink	Programs total input stage current; controls GBW, slew rate, and input resistance
9 (IN2+)	Non-inverting current input (mirror reference)	Independent mirror reference for second amplifier; same function as Pin 7
10 (OUT2)	Amplifier 2 output	Identical output capability to Pin 6; fully independent channel
11 (COMP2)	Compensation terminal	Independent compensation node for second amplifier; same function as Pin 3
12 (IN2−)	Inverting current input	Second independent signal input; identical electrical characteristics to Pin 2
13 (V+)	Positive supply	Single 5–22 V supply input; powers both amplifiers and internal current mirrors
14 (NC)	No connect	Internally unconnected; must remain floating-no external connection permitted

Key Features

Feature	Design Value
User-programmable bandwidth & slew rate	I_SET(IN) and I_SET(OUT) pins allow real-time trade-off between speed (400 MHz GBW), power (22 mA total), and noise (6 nV/√Hz)
Current-differencing input topology	Enables >V_CC common-mode input range and eliminates need for input coupling capacitors in DC-coupled video paths
DC biasing via mirror current	Pin 7/9 reference current forces precise output DC level (e.g., V_CC/2) without external resistive dividers or op-amp followers
Stable inverting gain ≥10	Internally compensated for unity-gain-stable operation only when configured as inverting amplifier with gain ≥10
High-output-drive capability	Delivers 4.7 mA linear sink current into 100 Ω; sufficient to drive coaxial cables and terminated video lines directly
Low-distortion video performance	Verified <0.5% differential gain error and <1° differential phase error at 3.58 MHz-meets NTSC/PAL broadcast requirements

Applications

Video Signal Amplification	Active Filter Design
Use Scenario: Amplifying composite NTSC video signals in broadcast equipment, CCTV cameras, or video switchers before transmission or digitization. IC Role / Device Role / Timing Role: Dual-channel inverting video amplifier with 20 dB fixed gain, DC-coupled input, and 3.58 MHz chroma bandpass shaping. Use Value: Maintains <1° differential phase and <0.5% differential gain error at 3.58 MHz-preserving color fidelity without post-processing correction.	Use Scenario: Implementing high-Q, wide-dynamic-range biquad filters for audio equalization, anti-aliasing, or sensor signal conditioning. IC Role / Device Role / Timing Role: Two-amplifier biquad topology where one LM359M/NOPB section acts as non-inverting integrator and the other as inverting summer. Use Value: Enables 2-amplifier filter realization (vs. 3–4 op-amps), reducing component count and board space while supporting fo×Qo ≤5 MHz.
Photodiode Transimpedance Amplifier	Waveform Generation
Use Scenario: Converting fast optical pulses from PIN photodiodes into clean voltage waveforms for time-of-flight or laser rangefinder systems. IC Role / Device Role / Timing Role: Single-channel transimpedance amplifier with nV_BE biasing, optimized for >10 MHz bandwidth and low input capacitance. Use Value: Achieves >10 MHz frequency response with 45 ns pulse rise time-enabling sub-nanosecond timing resolution in optical detection.	Use Scenario: Generating TTL-compatible squarewaves, triangle waves, or pulse trains in test equipment, clock distribution, or digital logic stimulus generators. IC Role / Device Role / Timing Role: High-speed comparator + integrator core in oscillator topologies (e.g., squarewave generator with 1 MHz output). Use Value: Delivers 1 MHz TTL output with <2.5% THD and adjustable duty cycle-replacing discrete logic + RC networks with single-IC solution.

Video Signal Amplification

Active Filter Design

Use Scenario: Amplifying composite NTSC video signals in broadcast equipment, CCTV cameras, or video switchers before transmission or digitization.

IC Role / Device Role / Timing Role: Dual-channel inverting video amplifier with 20 dB fixed gain, DC-coupled input, and 3.58 MHz chroma bandpass shaping.

Use Value: Maintains <1° differential phase and <0.5% differential gain error at 3.58 MHz-preserving color fidelity without post-processing correction.

Use Scenario: Implementing high-Q, wide-dynamic-range biquad filters for audio equalization, anti-aliasing, or sensor signal conditioning.

IC Role / Device Role / Timing Role: Two-amplifier biquad topology where one LM359M/NOPB section acts as non-inverting integrator and the other as inverting summer.

Use Value: Enables 2-amplifier filter realization (vs. 3–4 op-amps), reducing component count and board space while supporting fo×Qo ≤5 MHz.

Photodiode Transimpedance Amplifier

Waveform Generation

Use Scenario: Converting fast optical pulses from PIN photodiodes into clean voltage waveforms for time-of-flight or laser rangefinder systems.

IC Role / Device Role / Timing Role: Single-channel transimpedance amplifier with nV_BE biasing, optimized for >10 MHz bandwidth and low input capacitance.

Use Value: Achieves >10 MHz frequency response with 45 ns pulse rise time-enabling sub-nanosecond timing resolution in optical detection.

Use Scenario: Generating TTL-compatible squarewaves, triangle waves, or pulse trains in test equipment, clock distribution, or digital logic stimulus generators.

IC Role / Device Role / Timing Role: High-speed comparator + integrator core in oscillator topologies (e.g., squarewave generator with 1 MHz output).

Use Value: Delivers 1 MHz TTL output with <2.5% THD and adjustable duty cycle-replacing discrete logic + RC networks with single-IC solution.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM3900DR	Lower GBW (2.5 MHz), no I_SET programming, fixed bias; wider temp range (−40°C to +85°C)	Limited to low-frequency general-purpose amplification; unsuitable for video or >1 MHz filter design	Select LM3900DR only for cost-sensitive, low-speed applications where programmability and bandwidth are unnecessary
THS3201D	Higher GBW (1.8 GHz), voltage-feedback architecture, no current differencing inputs; requires dual ±5 V supply	Superior speed but lacks >V_CC input range and single-supply simplicity; needs level-shifting for photodiode anode interface	Choose THS3201D when >500 MHz bandwidth is mandatory and system can support dual supplies and added complexity

Compared with LM359M/NOPB, LM3900DR offers broader temperature rating but sacrifices 160× bandwidth and programmability; THS3201D delivers extreme speed but abandons the key advantages of current-mode operation-single-supply compatibility, rail-exceeding inputs, and inherent DC biasing via mirror current.

Availability

LM359M/NOPB is available at Aetrix Electronics and suitable for video signal processing, active filter implementation, and photodiode amplification requiring stable component supply across industrial, broadcast, and instrumentation programs.

Supply support for LM359M/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, embedded processing, and high-reliability components for industrial, automotive, and communications markets.

The LM359M/NOPB belongs to TI's legacy high-speed analog amplifier portfolio, engineered specifically for broadband current-mode signal conditioning in video, optical sensing, and precision waveform generation systems.

FAQ

What is the maximum operating supply voltage for LM359M/NOPB?

The LM359M/NOPB supports a maximum supply voltage of 22 VDC (or ±11 VDC in split-supply configurations). Exceeding this limit risks permanent damage, as confirmed by Absolute Maximum Ratings in the official TI datasheet SNOSBT4C. Operation at 12 V or 15 V is typical for video and filter applications, balancing headroom and power dissipation. The LM359M/NOPB must never be subjected to reverse polarity or transient overvoltage events without external clamping.

Can LM359M/NOPB operate with input voltages above the positive supply rail?

Yes, the LM359M/NOPB supports input common-mode voltages exceeding V_CC, a defining feature of its current-differencing (Norton) architecture. This enables direct connection to photodiode anodes or other high-impedance sources biased above the supply, provided input current remains within the absolute maximum rating of 10 mA. The LM359M/NOPB achieves this through transistor-based input structures not referenced to V_CC, unlike conventional voltage-mode op-amps.

How do I configure LM359M/NOPB for stable unity-gain inverting operation?

The LM359M/NOPB is not internally compensated for unity-gain inverting operation. Stability at AV = 1 requires external compensation: add a 1–5 pF "lead" capacitor in parallel with the feedback resistor (R_f) to introduce zero-phase correction. Alternatively, connect 20 pF from COMP pin to ground for over-compensation-though this reduces GBW and slew rate. The LM359M/NOPB datasheet Figure 32 confirms this method as the recommended approach for gains below 10.

What is the purpose of Pins 5 and 14 on LM359M/NOPB?

Pins 5 and 14 on the LM359M/NOPB are designated as No Connect (NC) terminals-internally unconnected and electrically isolated from all circuitry. They must remain unconnected in PCB layout; soldering wires or traces to these pins may cause unpredictable behavior or damage. This NC designation is explicitly stated in TI's package diagram (Figure 1) and confirmed in the "Pin Functions" section of SNOSBT4C. The LM359M/NOPB relies solely on its 12 active pins for full dual-amplifier functionality.

Does LM359M/NOPB support true differential input operation?

No, the LM359M/NOPB does not implement true differential voltage-input operation. Each amplifier has separate inverting (IN−) and non-inverting (IN+) current-input terminals, but they function as a current differencing pair-not a balanced differential pair. The IN+ pin serves as a mirror reference for DC biasing, not a symmetrical signal input. For differential voltage amplification, external resistor networks (e.g., difference amplifier configuration per Figure 46) are required. The LM359M/NOPB's architecture is fundamentally current-mode, not differential-voltage-mode.

LM359M/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

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:: Surface Mount

Supplier Device Package:: 14-SOIC

LM359M/NOPB FAQ

1.How can I place an order for LM359M/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LM359M/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 LM359M/NOPB reliable?

The price and inventory of LM359M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM359M/NOPB is usually 5 days.

3.What payment methods are accepted for LM359M/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM359M/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM359M/NOPB?

LM359M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM359M/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 LM359M/NOPB?

For technical support, including LM359M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM359M/NOPB requirements.

6.How does Aetrix verify that LM359M/NOPB is sourced from the original manufacturer or authorized distributors?

All LM359M/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 LM359M/NOPB meets industry standards.

7.What is the process for return or replacement of LM359M/NOPB?

All LM359M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM359M/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 LM359M/NOPB part is unused and in its original packaging.

Return procedure for LM359M/NOPB:

1.Submit a request within 90 days.

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

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