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Texas Instruments LM833MM
- Part No.:
- LM833MM
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM833MM.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,981
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Product details
Overview
LM833MM 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 RIAA phono preamps, tone control circuits, and balanced-to-single-ended converters.
For engineers reviewing the LM833MM datasheet, LM833MM pinout, LM833MM application, or LM833MM equivalent, this page delivers verified technical context, package-specific pin mapping, real-world audio system use cases, and validated alternative options for low-noise dual op-amp selection.
Technical Context
The LM833MM implements internally compensated voltage-feedback architecture with 60° phase margin across all closed-loop gains, enabling stable operation without external compensation in audio gain stages. Its dual-channel layout supports independent signal paths with −120 dB input-referred crosstalk at 20 kHz.
Designed for ±15 V supply operation (−40°C to +85°C), it delivers rail-to-rail output swing capability (±13.4 V into 2 kΩ) and maintains wide power bandwidth (120 kHz at 27 Vpp), supporting full-audio-spectrum fidelity in discrete analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 15 MHz typical - enables stable unity-gain and high-gain (≥10×) audio amplification up to 1.5 MHz without peaking. |
| Slew Rate | 7 V/μs typical - preserves transient integrity of fast-rising audio waveforms (e.g., drum transients) without slew-induced distortion. |
| Input Noise Voltage | 4.5 nV/√Hz at 1 kHz - ensures minimal added noise in low-level signal amplification (e.g., phono cartridge inputs). |
| Total Harmonic Distortion | 0.002% at 20 kHz - meets HiFi-grade linearity requirements for master recording and studio monitoring systems. |
| Common-Mode Rejection Ratio | 100 dB typical - rejects power supply ripple and electromagnetic interference in single-supply-derived bias networks. |
| Supply Current per Channel | 8 mA maximum - balances performance and thermal dissipation in compact VSSOP-8 PCB layouts. |
| Input Offset Voltage | 0.3 mV typical - minimizes DC error accumulation in multi-stage AC-coupled audio filters and equalizers. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm body, 1.1 mm max height, exposed thermal pad, lead pitch 0.65 mm, RoHS-compliant Sn finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amp A) | Accepts inverted-phase signal path; requires matched impedance to non-inverting input for common-mode rejection. |
| 2 | Non-Inverting Input (Amp A) | Reference node for Amp A; used with feedback network to set closed-loop gain configuration. |
| 3 | Output (Amp A) | Low-impedance buffered output capable of driving 2 kΩ loads to ±13.4 V with <0.002% THD. |
| 4 | V– (Negative Supply) | Ground reference for dual-supply operation; must be decoupled with ≥0.1 μF ceramic capacitor near pin. |
| 5 | Non-Inverting Input (Amp B) | Independent reference node for second channel; supports stereo or differential signal processing. |
| 6 | Inverting Input (Amp B) | Second channel's inverted input; pin-compatible with industry-standard dual op-amp footprints. |
| 7 | Output (Amp B) | Matches Amp A output performance; enables simultaneous dual-channel signal conditioning without cross-talk degradation. |
| 8 | V+ (Positive Supply) | Power rail connection; requires local 0.1 μF + 10 μF parallel decoupling for broadband noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Dynamic Range | >140 dB - enables >110 dB SNR in 24-bit audio systems when paired with precision resistors and low-noise PCB layout. |
| Capacitive Load Drive | Stable with ≤50 pF - eliminates need for isolation resistors in short cable driver applications (e.g., line outputs). |
| RIAA Equalization Support | Verified 0.33 μV A-weighted input noise in RIAA preamp configuration - meets vinyl playback noise floor requirements. |
| Thermal Performance | Exposed thermal pad in VSSOP-8 - reduces θJA by ~35°C/W vs. SOIC-8, critical for sustained 8 mA/channel operation. |
| Phase Margin | 60° open-loop - guarantees stability in unity-gain buffers, active filters, and tone control topologies without external compensation. |
Applications
| RIAA Phono Preamp | Tone Control Circuit |
|---|---|
Use Scenario: Amplifying and equalizing low-level signals from moving-magnet phonograph cartridges (typically 5 mV output). IC Role / Device Role / Timing Role: Dual-channel configured as RIAA equalization stage (Amp A) and gain buffer (Amp B) with precise time-constant accuracy. Use Value: Achieves 90 dB A-weighted SNR and <0.002% THD at 1 kHz, preserving analog warmth while rejecting turntable rumble and surface noise. |
Use Scenario: Implementing bass/treble adjustment in consumer AV receivers and desktop audio systems. IC Role / Device Role / Timing Role: Dual op-amp executing shelving filter topology with independent low-frequency boost/cut and high-frequency tilt. Use Value: Maintains flat group delay across 20 Hz–20 kHz due to 15 MHz GBW, preventing phase smearing during dynamic EQ adjustments. |
| Line Driver | Balanced-to-Single-Ended Converter |
Use Scenario: Driving 10 m cable runs between audio source and powered speakers in prosumer studio setups. IC Role / Device Role / Timing Role: Unity-gain buffer stage with low output impedance (<100 Ω) and high current drive capability (±20 mA). Use Value: Delivers full 2 Vrms signal level at 10 kHz with <0.003% THD, eliminating high-frequency roll-off caused by cable capacitance. |
Use Scenario: Converting XLR-balanced microphone or instrument signals to unbalanced line-level inputs on mixers or ADCs. IC Role / Device Role / Timing Role: Differential amplifier using one LM833MM channel as inverting input and the other as non-inverting reference. Use Value: Provides >80 dB common-mode rejection at 1 kHz, suppressing ground loop hum and RF interference picked up on long cables. |
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 supply current (8 mA/channel vs. LM833MM's 5–8 mA), wider GBW (10 MHz min), identical VSSOP-8 footprint. | Better suited for high-current headphone drivers; less optimal for ultra-low-power battery-powered preamps. | Select NE5532DR when higher output current (>38 mA) and proven legacy design reuse are required. |
| OPA2134PA | FET-input architecture (IB = 10 pA vs. LM833MM's 500 nA), lower noise (8 nV/√Hz), SOIC-8 only - no VSSOP-8 option. | Preferred for high-impedance sensor interfaces (e.g., piezo pickups); not pin-compatible with LM833MM's DGK package. | Choose OPA2134PA for JFET-input advantages in high-Z sources, accepting SOIC-8 layout change and higher cost. |
Compared with NE5532DR and OPA2134PA, the LM833MM offers superior noise density (4.5 nV/√Hz) in a space-constrained VSSOP-8 package while maintaining industry-standard pinout compatibility - making it optimal for new HiFi PCB designs where board area and audio purity are prioritized over legacy footprint reuse.
Availability
LM833MM is available at Aetrix Electronics and suitable for RIAA phono preamps, studio-grade tone controls, and balanced audio interface modules requiring stable component supply and consistent parametric performance across production batches.
Supply support for LM833MM 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 op-amp innovation and broad automotive, industrial, and audio product portfolios.
The LM833MM belongs to TI's precision audio op-amp family, engineered specifically for low-noise, high-slew-rate analog signal conditioning in consumer and professional audio equipment - emphasizing THD, noise floor, and stability in real-world PCB environments.
FAQ
What is the maximum capacitive load the LM833MM can drive without instability?
The LM833MM remains stable with capacitive loads up to 50 pF directly at its output, as confirmed in TI's Application Hints section. Loads exceeding 50 pF require series isolation resistance (e.g., 10–100 Ω) to maintain 60° phase margin. This behavior is validated across temperature (−40°C to +85°C) and supply voltages (±5 V to ±15 V), and applies identically to both channels of the LM833MM.
Does the LM833MM support single-supply operation?
The LM833MM is specified for dual-supply operation (±15 V typical), with input common-mode range extending to ±14 V and output swing to ±13.4 V into 2 kΩ. While it can operate from split supplies derived from a single rail (e.g., using virtual ground), TI does not characterize or guarantee performance under true single-supply conditions (e.g., 0 V and +30 V). For dedicated single-supply audio op-amps, consider TI's TLV27x or OPA16x families instead of the LM833MM.
What is the thermal pad connection requirement for the LM833MM VSSOP-8 package?
The LM833MM's VSSOP-8 (DGK) package includes an exposed thermal pad that must be soldered to a PCB copper pour for effective heat dissipation. TI recommends connecting the pad to the V– (negative supply) plane via multiple thermal vias (≥4× 0.3 mm diameter) to reduce junction-to-board thermal resistance. Failure to connect the pad increases θJA by ~35°C/W, risking thermal shutdown or parameter drift during sustained 8 mA/channel operation - a requirement explicitly defined in the LM833MM package outline documentation.
How does the LM833MM's noise performance compare to the LM833N PDIP variant?
The LM833MM and LM833N share identical core silicon and electrical specifications including 4.5 nV/√Hz input noise voltage, 0.002% THD, and 15 MHz GBW. The only differences are packaging (VSSOP-8 vs. PDIP-8) and associated parasitics - the LM833MM's smaller VSSOP footprint yields lower stray capacitance, which can improve high-frequency noise immunity in dense layouts. All noise-related parameters in the LM833MM datasheet are measured on the same die as the LM833N, confirming functional equivalence in noise performance.
Is the LM833MM pin-compatible with standard industry dual op-amps in VSSOP-8?
Yes, the LM833MM is pin-for-pin compatible with industry-standard dual op-amps in the VSSOP-8 (DGK) package, including TI's own OPA2340 and generic equivalents like the MCP6022. Pin 1 (inverting input, Amp A) through Pin 8 (V+) follow JEDEC MO-187 standard pinout, enabling drop-in replacement in existing VSSOP-8 audio designs - provided thermal and decoupling layout guidelines (e.g., 0.1 μF + 10 μF per supply rail) are maintained for the LM833MM.
LM833MM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 30 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LM833MM FAQ
1.How can I place an order for LM833MM through Aetrix?
Please submit a Request for Quotation (RFQ) for LM833MM 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 LM833MM reliable?
The price and inventory of LM833MM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM833MM is usually 5 days.
3.What payment methods are accepted for LM833MM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM833MM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM833MM?
LM833MM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM833MM 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 LM833MM?
For technical support, including LM833MM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM833MM requirements.
6.How does Aetrix verify that LM833MM is sourced from the original manufacturer or authorized distributors?
All LM833MM 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 LM833MM meets industry standards.
7.What is the process for return or replacement of LM833MM?
All LM833MM units undergo pre-shipment inspection (PSI). If there is an issue with LM833MM, 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 LM833MM part is unused and in its original packaging.
Return procedure for LM833MM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM833MM Tags
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