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Texas Instruments LM833M
- Part No.:
- LM833M
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM833M.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:376
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Product details
Overview
LM833M from Texas Instruments is a dual audio operational amplifier optimized for high-fidelity preamplifier and line-level signal conditioning stages, featuring 15 MHz gain bandwidth, 7 V/μs slew rate, 4.5 nV/√Hz input noise voltage, and 0.002% THD at 20 kHz - deployed in stereo audio equipment, RIAA phono preamps, and professional line drivers.
For engineers reviewing the LM833M datasheet, LM833M pinout, LM833M application, or LM833M equivalent, key selection criteria include low-noise audio performance, unity-gain stability without external compensation, SOIC-8 package compatibility with legacy dual op-amp layouts, and −40°C to +85°C industrial temperature operation.
Technical Context
The LM833M employs internally compensated voltage-feedback architecture with 60° phase margin across all closed-loop gains, enabling stable operation from unity gain to high gain without external compensation components. Its dual-channel layout shares a common substrate but maintains >120 dB input-referred crosstalk suppression at audio frequencies.
Designed specifically for analog audio signal paths, it delivers wide dynamic range (>140 dB), low distortion (0.002% THD+N), and rail-to-rail output swing capability (±13.4 V into 2 kΩ) under ±15 V supplies - supporting both single-ended and balanced configurations including adder/subtracter, panning, and tone control circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 15 MHz typical - supports stable unity-gain audio amplification up to 15 MHz, sufficient for ultrasonic filtering and wideband instrumentation. |
| Slew Rate | 7 V/μs typical - enables full-power response to fast transients in high-slew audio signals (e.g., drum hits) without slewing-induced distortion. |
| Input Noise Voltage | 4.5 nV/√Hz at 1 kHz - ensures minimal contribution to system noise floor in sensitive microphone and phono preamp stages. |
| Total Harmonic Distortion | 0.002% at 20 kHz - meets HiFi-grade line-level amplification requirements with negligible audible coloration. |
| Input Offset Voltage | 0.3 mV max - reduces DC error accumulation in multi-stage AC-coupled audio chains, minimizing output offset drift. |
| Common-Mode Rejection | 100 dB typical - rejects power supply ripple and ground noise in differential-input configurations like balanced receivers. |
| Supply Current | 8 mA max per amplifier - enables dual-channel operation within thermal limits of SOIC-8 packages at ambient temperatures up to 85°C. |
Pinout & Package
LM833M is housed in an industry-standard SOIC-8 (Package D0008A) surface-mount package measuring 4.9 mm × 3.9 mm × 1.75 mm, compatible with automated assembly and IPC-7351 land patterns. Pin 1 is marked by a beveled corner or notch on the package top edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp A) | Accepts inverted-phase signal input; used with feedback network to set closed-loop gain in inverting configurations. |
| 2 | Non-Inverting Input (Amp A) | Accepts non-inverted signal input; referenced to ground or bias network in single-ended or differential applications. |
| 3 | Output (Amp A) | Delivers amplified output signal; capable of ±13.4 V swing into 2 kΩ load with <0.002% THD. |
| 4 | Negative Supply (VEE) | Connects to −15 V (or −5 V min); internal ESD protection requires shorting during handling to prevent gate damage. |
| 5 | Non-Inverting Input (Amp B) | Independent input for second amplifier channel; enables stereo, dual-path, or composite signal processing. |
| 6 | Inverting Input (Amp B) | Second channel inverting input; supports matched gain-setting networks for symmetrical dual-channel designs. |
| 7 | Output (Amp B) | Second independent output; maintains >120 dB channel separation for stereo imaging and balanced driver applications. |
| 8 | Positive Supply (VCC) | Connects to +15 V (or +5 V min); total supply range supports ±18 V absolute maximum with 36 V differential limit. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated | Stable at unity gain without external compensation capacitors - simplifies PCB layout and eliminates tuning steps. |
| Low input bias current | 500–1000 nA max - minimizes voltage error across high-impedance source networks (e.g., passive tone controls). |
| Wide power bandwidth | 120 kHz at 27 Vpp output - supports full-swing audio delivery up to 20 kHz with headroom for transient peaks. |
| High PSRR & CMRR | 100 dB typical - rejects supply ripple and common-mode interference in noisy industrial or automotive audio environments. |
| Capacitive load drive | Stable with ≤50 pF loads - allows direct connection to coaxial cables or long traces without isolation resistors. |
Applications
| Phono Preamp (RIAA Equalization) | Professional Line Driver |
|---|---|
Use Scenario: Amplifying and equalizing low-level signals from moving-magnet turntables using RIAA curve compensation. IC Role / Device Role / Timing Role: Dual-channel configuration implements RIAA network in first stage and buffer in second stage. Use Value: 4.5 nV/√Hz input noise and 0.002% THD preserve vinyl dynamics and tonal fidelity without added hiss or distortion. |
Use Scenario: Driving long balanced/unbalanced interconnects between mixing consoles and power amplifiers. IC Role / Device Role / Timing Role: One amplifier serves as inverting gain stage; the other provides active impedance matching and current drive. Use Value: ±13.4 V output swing into 2 kΩ and 120 kHz power bandwidth ensure clean signal delivery over 100 m cable runs. |
| Stereo Tone Control | 2-Channel Panning Circuit |
Use Scenario: Implementing bass/treble adjustment in consumer AV receivers using passive RC networks and op-amp buffers. IC Role / Device Role / Timing Role: Each amplifier handles one channel's low-pass and high-pass tone sections independently. Use Value: 15 MHz GBW and 7 V/μs slew rate maintain phase coherence across 20 Hz–20 kHz, preventing tonal smearing. |
Use Scenario: Controlling left/right signal distribution in studio monitor controllers using dual-gang potentiometers. IC Role / Device Role / Timing Role: Dual amplifiers perform summing and attenuation functions for real-time stereo image positioning. Use Value: >120 dB channel crosstalk and matched DC specs ensure precise, noise-free panning without image collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual audio operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NE5532DR | Higher input bias current (300 nA typ vs. 500 nA min), wider supply range (±20 V), identical 10 MHz GBW and 9 V/μs slew rate. | Better suited for higher-voltage audio systems; slightly higher noise (5 nV/√Hz) limits use in ultra-low-noise phono stages. | Select NE5532DR when operating above ±15 V or requiring higher output current capability (38 mA vs. 30 mA). |
| OPA2134PA | FET-input architecture (2 pA IB), lower noise (8 nV/√Hz), 8 MHz GBW, and JFET-based input stage improves CMRR at high frequencies. | Superior for high-impedance sensor interfaces but less optimal for low-distortion line-level amplification due to lower slew rate (20 V/μs). | Choose OPA2134PA for piezoelectric or electret mic preamps where ultra-low input current matters more than slew-limited transient response. |
Compared with NE5532DR and OPA2134PA, the LM833M offers the best balance of low noise, high slew rate, and guaranteed stability in standard SOIC-8 layouts - making it ideal for cost-sensitive, space-constrained HiFi and broadcast audio designs requiring proven reliability and TI's long-term production support.
Availability
LM833M is available at Aetrix Electronics and suitable for professional audio equipment, broadcast signal conditioning, and industrial audio monitoring systems requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for LM833M 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 precision amplifiers and signal chain solutions.
The LM833M belongs to TI's legacy audio op-amp product line, engineered specifically for high-fidelity analog signal conditioning in consumer, pro-audio, and broadcast applications where low noise, low distortion, and robust stability are critical.
FAQ
What is the maximum supply voltage for LM833M?
The LM833M supports a total supply voltage range of ±18 V maximum, with absolute maximum ratings specifying 36 V differential between VCC and VEE. Operation at ±15 V is recommended for optimal noise and distortion performance, and the device remains functional down to ±5 V supplies while maintaining specified gain bandwidth and slew rate.
Is LM833M pin-compatible with other dual op-amps?
Yes, LM833M is pin-for-pin compatible with industry-standard dual op-amps in SOIC-8 packages, including the NE5532, TL072, and RC4558. Its pinout matches the generic dual op-amp configuration (inverting/non-inverting inputs and outputs per channel, shared supplies), enabling drop-in replacement in existing designs without PCB modification.
Does LM833M require external compensation capacitors?
No, LM833M is internally compensated for unity-gain stability and does not require external compensation capacitors. It maintains ≥60° phase margin across all closed-loop gains, allowing direct implementation in inverting, non-inverting, and differential configurations without risk of oscillation - a key advantage over decompensated op-amps like the OPA2604.
What is the typical input-referred noise voltage of LM833M?
The LM833M has a typical input-referred noise voltage of 4.5 nV/√Hz at 1 kHz with RS = 100 Ω, measured per TI's SNOSBD8E datasheet. This value is confirmed across production lots and remains stable over temperature, making LM833M suitable for low-noise audio front-ends where residual noise must stay below 0.5 μV RMS in 20 Hz–20 kHz bandwidth.
Can LM833M drive capacitive loads directly?
Yes, LM833M can drive capacitive loads up to 50 pF without instability or phase degradation, as verified in TI's application hints. Loads exceeding 50 pF - such as long coaxial cables or filter networks - require series isolation (e.g., 10–100 Ω resistor) at the output to maintain stability and prevent ringing or overshoot in transient response.
LM833M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Audio
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 7V/µs
- Gain Bandwidth Product:
- 15 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 nA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 5mA (x2 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM833M FAQ
1.How can I place an order for LM833M through Aetrix?
Please submit a Request for Quotation (RFQ) for LM833M 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 LM833M reliable?
The price and inventory of LM833M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM833M is usually 5 days.
3.What payment methods are accepted for LM833M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM833M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM833M?
LM833M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM833M 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 LM833M?
For technical support, including LM833M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM833M requirements.
6.How does Aetrix verify that LM833M is sourced from the original manufacturer or authorized distributors?
All LM833M 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 LM833M meets industry standards.
7.What is the process for return or replacement of LM833M?
All LM833M units undergo pre-shipment inspection (PSI). If there is an issue with LM833M, 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 LM833M part is unused and in its original packaging.
Return procedure for LM833M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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