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

Texas Instruments LM359MX/NOPB

Name: LM359MX/NOPB
Brand: Texas Instruments
SKU: LM359MX/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LM359MX/NOPB

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: LM359MX/NOPB.pdf

Description:: IC OPAMP GP 2 CIRCUIT 14SOIC

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Product details

Overview

LM359MX/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 gain bandwidth, slew rate, bias current, and power dissipation per channel.

For engineers reviewing the LM359MX/NOPB datasheet, LM359MX/NOPB pinout, LM359MX/NOPB application, or LM359MX/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 LM359MX/NOPB implements two decompensated, cascode-based current differencing amplifiers-distinct from voltage-mode op-amps-where signal processing occurs via current subtraction at the inverting input and mirrored current injection at the non-inverting input. Each amplifier features separate I_SET(IN) and I_SET(OUT) pins to independently configure input-stage transconductance and output-stage quiescent current.

Stability is internally ensured for inverting closed-loop gains ≥10; lower gains or non-inverting configurations require external lead compensation (1–5 pF) on the COMP pin. The device supports DC-coupled inputs with common-mode voltages up to V_CC + 0.6 V, enabled by V_BE-referenced input stages and Darlington emitter-follower outputs delivering 2 mV to V_CC − 2 V swing into 600 Ω.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	400 MHz at AV = 10–100 (I_SET = 0.5 mA); enables stable 10 MHz video amplification with 20 dB gain
Slew Rate	60 V/μs at AV = 10–100 (I_SET = 0.5 mA); supports fast edge fidelity in pulse and squarewave generation
Input Common-Mode Range	Up to V_CC + 0.6 V; allows direct connection to video sources or photodiode anodes without level-shifting
Output Voltage Swing	2 mV to V_CC − 2 V into 600 Ω; provides rail-to-rail usable dynamic range for single-supply systems
Supply Voltage Range	5 V to 22 V single supply; accommodates industrial 12 V and broadcast 15 V systems without regulation
Low-Frequency Noise	6 nV/√Hz above 1 kHz; critical for low-noise photodiode preamplification and precision active filtering
Mirror Gain Accuracy	0.9–1.1 μA/μA over temperature; ensures predictable DC biasing and gain stability in current-mirror feedback loops

Pinout & Package

LM359MX/NOPB is housed in a 14-pin SOIC (NFF0014A) package with 1.27 mm pitch, 8.65 mm × 3.91 mm body, and thermal resistance θ_JA = 100°C/W (still air). Pin functions are validated per TI SNOSBT4C Rev. MARCH 2013.

Pin/Terminal	Circuit Role	Design Meaning
1 (I_SET(OUT))	Output stage bias current programming input	Sets Darlington emitter-follower quiescent current; determines max sink current (~10× I_SET(OUT)) and output drive capability
2 (−IN A)	Inverting current input for Amplifier A	Current subtraction node; low impedance (~2.5 kΩ) accepts signal current directly from photodiodes or current sources
3 (COMP A)	Compensation terminal for Amplifier A	Connects external capacitor (1–20 pF) to ground for stability tuning; internal pole adjustment without sacrificing slew rate
4 (V−)	Negative supply / ground reference	Ground return for both amplifiers; requires single-point grounding to minimize crosstalk between channels
5 (NC)	No connect	Internally unconnected; must remain floating-no routing or soldering permitted
6 (+IN A)	Non-inverting current input for Amplifier A	Current mirror reference input; establishes DC bias point via mirror current forcing output to required voltage
7 (OUT A)	Amplifier A output	Darlington emitter-follower output; drives capacitive loads ≤100 pF directly; >100 pF requires isolation or over-compensation
8 (I_SET(IN))	Input stage bias current programming input	Sets total input transconductance; directly controls slew rate, GBW, input bias current, and open-loop dominant pole frequency
9 (OUT B)	Amplifier B output	Identical to Pin 7; supports dual-channel operation with independent I_SET programming per channel
10 (+IN B)	Non-inverting current input for Amplifier B	Independent mirror reference for Channel B; enables separate DC biasing and gain control vs. Channel A
11 (COMP B)	Compensation terminal for Amplifier B	Independent compensation node; allows asymmetric frequency response tuning for multi-stage filter designs
12 (−IN B)	Inverting current input for Amplifier B	Independent current subtraction node; supports differential or fully independent dual-amplifier topologies
13 (V+)	Positive supply input	Single 5–22 V supply rail; powers both amplifiers and internal current mirrors; bypass with 0.01 μF ceramic near pin
14 (NC)	No connect	Internally unconnected; must remain floating-no routing or soldering permitted

Key Features

Feature	Design Value
User-programmable gain-bandwidth-slew-power tradeoff	I_SET(IN) and I_SET(OUT) pins allow real-time optimization of AC performance vs. power consumption without changing PCB layout
Current-differencing input architecture	Enables high common-mode input voltage (>V_CC) and eliminates need for input coupling capacitors in DC-coupled video or sensor interfaces
DC biasing via mirror current control	Output DC level is set by injecting precise reference current into (+IN), enabling stable single-supply operation without external bias networks
Internal compensation for G ≥ 10	Guarantees stability in standard inverting video gain blocks without external components; reduces BOM count and layout complexity
Low 6 nV/√Hz input-referred noise	Supports high-gain photodiode amplification with minimal signal degradation-verified in TI Application Note AN-72
NTSC-compliant video performance	Meets broadcast-grade specs: <1° differential phase error and <0.5% differential gain error at 3.58 MHz with 20 dB gain

Applications

Video Signal Amplification	High-Q Active Filtering
Use Scenario: Amplifying composite NTSC video signals (3.58 MHz color subcarrier) in broadcast equipment, CCTV systems, or video distribution hubs. IC Role / Device Role / Timing Role: Dual-channel inverting video amplifier with 20 dB fixed gain, DC-coupled input, and 600 Ω line-driver output stage. Use Value: Maintains <1° differential phase and <0.5% differential gain error at 3.58 MHz-critical for color fidelity in analog video transmission.	Use Scenario: Implementing 2-amplifier biquad filters for audio equalization, anti-aliasing, or sensor signal conditioning requiring Q > 20. IC Role / Device Role / Timing Role: Dual Norton amplifier configured as non-inverting integrator and inverting summer in biquad topology. Use Value: Enables high-fo×Qo product (≤5 MHz) with only two amplifiers-reducing component count and phase error vs. 3-opamp implementations.
Photodiode Transimpedance Amplification	Wideband Waveform Generation
Use Scenario: Converting fast optical pulses from PIN photodiodes into clean voltage waveforms in fiber-optic receivers or laser rangefinders. IC Role / Device Role / Timing Role: Single-channel current-input transimpedance amplifier with programmable bandwidth (up to 10 MHz) and low 6 nV/√Hz noise. Use Value: Achieves >10 MHz frequency response with 45 ns pulse rise time-validated in TI Figure 44-without stability compromises.	Use Scenario: Generating TTL-compatible squarewaves, pulses, or triangle waves at 1–10 MHz in test equipment, clock recovery, or PLL reference circuits. IC Role / Device Role / Timing Role: Dual-channel comparator + integrator core in oscillator topologies (e.g., squarewave generator in TI Figure 49). Use Value: Delivers 1 MHz TTL output with <2.5% THD and adjustable duty cycle-enabling precise timing signal synthesis without external logic.

Video Signal Amplification

High-Q Active Filtering

Use Scenario: Amplifying composite NTSC video signals (3.58 MHz color subcarrier) in broadcast equipment, CCTV systems, or video distribution hubs.

IC Role / Device Role / Timing Role: Dual-channel inverting video amplifier with 20 dB fixed gain, DC-coupled input, and 600 Ω line-driver output stage.

Use Value: Maintains <1° differential phase and <0.5% differential gain error at 3.58 MHz-critical for color fidelity in analog video transmission.

Use Scenario: Implementing 2-amplifier biquad filters for audio equalization, anti-aliasing, or sensor signal conditioning requiring Q > 20.

IC Role / Device Role / Timing Role: Dual Norton amplifier configured as non-inverting integrator and inverting summer in biquad topology.

Use Value: Enables high-fo×Qo product (≤5 MHz) with only two amplifiers-reducing component count and phase error vs. 3-opamp implementations.

Photodiode Transimpedance Amplification

Wideband Waveform Generation

Use Scenario: Converting fast optical pulses from PIN photodiodes into clean voltage waveforms in fiber-optic receivers or laser rangefinders.

IC Role / Device Role / Timing Role: Single-channel current-input transimpedance amplifier with programmable bandwidth (up to 10 MHz) and low 6 nV/√Hz noise.

Use Value: Achieves >10 MHz frequency response with 45 ns pulse rise time-validated in TI Figure 44-without stability compromises.

Use Scenario: Generating TTL-compatible squarewaves, pulses, or triangle waves at 1–10 MHz in test equipment, clock recovery, or PLL reference circuits.

IC Role / Device Role / Timing Role: Dual-channel comparator + integrator core in oscillator topologies (e.g., squarewave generator in TI Figure 49).

Use Value: Delivers 1 MHz TTL output with <2.5% THD and adjustable duty cycle-enabling precise timing signal synthesis without external logic.

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 30 V/μs slew rate, wider temp range (−40°C to +85°C)	General-purpose AC-coupled amplification only; unsuitable for NTSC video or >1 MHz active filters	Select LM3900DR only when cost sensitivity outweighs bandwidth requirements and programmability is unnecessary.
THS3091D	Voltage-mode architecture, 210 MHz GBW, 7300 V/μs slew rate, ±15 V supply, no current-differencing inputs	Requires input/output level-shifting for single-supply use; lacks mirror-based DC biasing capability	Choose THS3091D for ultra-high-speed voltage-domain applications where current-mode benefits (e.g., >V_CC CMVR) are not needed.

Compared with LM359MX/NOPB, LM3900DR offers broader temperature support but sacrifices 160× bandwidth and programmability; THS3091D delivers extreme slew rate but abandons the current-differencing architecture essential for DC-coupled photodiode and video signal chains.

Availability

LM359MX/NOPB is available at Aetrix Electronics and suitable for video signal amplification, high-frequency active filtering, and photodiode transimpedance conversion requiring stable component supply across industrial, broadcast, and test equipment production cycles.

Supply support for LM359MX/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 linear ICs.

The LM359MX/NOPB belongs to TI's legacy high-speed current-mode amplifier product line, engineered specifically for broadband analog signal conditioning where programmable bandwidth, DC-coupled operation, and NTSC-compliant video fidelity are mandatory.

FAQ

What is the maximum operating supply voltage for LM359MX/NOPB?

The LM359MX/NOPB supports a maximum supply voltage of 22 VDC (or ±11 VDC in split-supply configurations). Exceeding this rating risks permanent damage, as confirmed in the Absolute Maximum Ratings table of TI SNOSBT4C. Operation at 12 V or 15 V is typical for video and active filter applications, balancing headroom and power dissipation within the 750 mW SOIC package limit.

Can LM359MX/NOPB be used in non-inverting configurations?

Yes, LM359MX/NOPB supports non-inverting configurations, but external lead compensation (1–5 pF capacitor across feedback resistor) is mandatory for stability due to 100% current feedback topology. TI Application Hints (Section "A NON-INVERTING VIDEO AMPLIFIER") confirm successful 20 dB gain designs at 10 MHz with <0.5° differential phase error-validating robust non-inverting operation when compensated per Figure 32.

How does I_SET(IN) affect LM359MX/NOPB's slew rate?

I_SET(IN) directly sets the input-stage transconductance: a 0.5 mA setting yields 60 V/μs slew rate at AV = 10–100, while reducing I_SET(IN) to 0.1 mA lowers slew rate to ~12 V/μs. This relationship is derived from Equation (1) in TI SNOSBT4C Section "OPERATING CURRENT PROGRAMMABILITY", enabling precise slew-rate/power tradeoffs without hardware changes.

Is LM359MX/NOPB pin-compatible with LM359N?

No, LM359MX/NOPB (SOIC-14, NFF0014A) is not pin-compatible with LM359N (PDIP-14, D0014A), though both share identical pin functions and electrical specifications. Physical differences-body size (8.65 × 3.91 mm vs. 19.17 × 6.67 mm), lead pitch (1.27 mm vs. 2.54 mm), and thermal resistance (100°C/W vs. 147°C/W)-require distinct PCB footprints and layout adjustments.

What is the minimum load resistance LM359MX/NOPB can drive at full output swing?

LM359MX/NOPB guarantees 2 mV to V_CC − 2 V output swing into 600 Ω loads, as specified in Electrical Characteristics (VOUT High/Low, RL = 600 Ω). Driving lower impedances (e.g., 75 Ω) is possible with reduced swing and increased distortion; TI Figure 45 demonstrates balanced line driving into 600 Ω with 0.3% THD at full bandwidth, confirming 600 Ω as the validated minimum for spec-compliant operation.

LM359MX/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

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

Packaging:: Tape & Reel (TR)

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

LM359MX/NOPB FAQ

1.How can I place an order for LM359MX/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LM359MX/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 LM359MX/NOPB reliable?

The price and inventory of LM359MX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM359MX/NOPB is usually 5 days.

3.What payment methods are accepted for LM359MX/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM359MX/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LM359MX/NOPB?

LM359MX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LM359MX/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 LM359MX/NOPB?

For technical support, including LM359MX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM359MX/NOPB requirements.

6.How does Aetrix verify that LM359MX/NOPB is sourced from the original manufacturer or authorized distributors?

All LM359MX/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 LM359MX/NOPB meets industry standards.

7.What is the process for return or replacement of LM359MX/NOPB?

All LM359MX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM359MX/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 LM359MX/NOPB part is unused and in its original packaging.

Return procedure for LM359MX/NOPB:

1.Submit a request within 90 days.

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

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