LM833MMX/NOPB - Dual Audio Op-Amp 15MHz 8-VSSOP | Texas Instruments
料号： LM833MMX/NOPB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.32 | $1.32 |
| 10 | $1.18 | $11.80 |
| 100 | $0.92 | $92.00 |
| 500 | $0.78 | $390.00 |
| 1,000 | $0.66 | $660.00 |
| 3,000 | $0.55 | $1,650.00 |
LM833MMX/NOPB 概述
An audio operational amplifier is a specialized op-amp engineered with input bias-current, noise, and distortion characteristics optimized for audio frequency band (20 Hz to 20 kHz) signal chains. Within the broader taxonomy, the LM833 belongs to the linear amplifier family, which sits under operational amplifiers (op-amps), under analog ICs, under signal conditioning, under semiconductors. The dual op-amp topology integrates two amplifiers in a single package, enabling stereo signal chains, balanced line receivers, and active filters with matched performance between channels.
Key features include 15 MHz unity-gain bandwidth, 7 V/us slew rate, low input voltage noise density of 4.5 nV/sqrt(Hz), and an input bias current of 300 nA maximum. The device offers high-gain bandwidth product (GBW), wide supply range (5 V to 30 V single, ±2.5 V to ±15 V dual), and is unity-gain stable. The MMX suffix denotes the 8-pin MSOP/VSSOP package on tape-and-reel (TR), while the standard MM (without X) ships in tubes. Drop-in compatibility with the LM833MM/NOPB in the same 8-VSSOP (DGK) package is preserved across all electrical specifications.
The LM833 utilizes a bipolar transistor input stage and a JFET-free architecture, achieving low-noise performance suitable for microphone preamplifiers, active crossovers, and high-fidelity audio DAC output buffers. The wide gain-bandwidth product supports AC-coupled audio stages where the op-amp must preserve signal integrity at high frequencies beyond the audible band, ensuring minimal harmonic and intermodulation distortion.
Typical applications include stereo audio preamplifiers, microphone preamps, active equalizers, audio mixers, headphone drivers, and instrumentation amplifiers. The dual-channel configuration also enables balanced line receivers and differential active filters in both pro-audio and prosumer equipment.
When designing with this device, observe proper power-supply decoupling with a 0.1 uF ceramic capacitor placed within 5 mm of each supply pin. The high GBW requires attention to PCB layout to minimize parasitic capacitance at the inverting input; ground plane management and short, direct signal traces are recommended.
This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers select and qualify LM833MMX/NOPB more efficiently.
直接替换替代料： LM833MMX/NOPB ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LM833MMX/NOPB （相同外形与封装尺寸） ——差异在于 Slew Rate, Package, Amplifier Type, Input Bias Current, MSL Level.
快速对比工具——选择替代料号进行并排对比：
LM833MM/NOPB
✅ 直接替换📋 参考替代料（不在目录中）
LM833MM
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LM2904BIDR
✅ 直接替换✓ 有现货
$0.13 / 个
查看数据手册 →LM833MMX/NOPB 最大额定值与电气特性
| Manufacturer | Texas Instruments |
| Part Number | LM833MMX/NOPB |
| Amplifier Type | Audio Operational Amplifier |
| Number of Circuits | 2 (Dual) |
| 输出类型 | Rail-to-Rail (per channel) |
| Slew Rate | 7 V/us (typical) |
| Gain Bandwidth Product | 15 MHz |
| Input Voltage Noise Density | 4.5 nV/sqrt(Hz) (typical) |
| Input Bias Current | 300 nA (max) |
| Supply Voltage Range | 5 V to 30 V (single), ±2.5 V to ±15 V (dual) |
| 工作温度 | -40 C to +85 C |
| 封装 | 8-VSSOP (MSOP, DGK) |
| 安装类型 | Surface Mount |
| Packaging | Tape & Reel (TR) |
| RoHS 状态 | Compliant |
| Lead Free / NOPB | Yes (NOPB suffix) |
LM833MMX/NOPB 引脚配置
| 引脚 1 | OUT A — Output of amplifier A |
| 引脚 2 | IN- A — Inverting input of amplifier A |
| 引脚 3 | IN+ A — Non-inverting input of amplifier A |
| 引脚 4 | V- — Negative supply (ground for single-supply) |
| 引脚 5 | IN+ B — Non-inverting input of amplifier B |
| 引脚 6 | IN- B — Inverting input of amplifier B |
| 引脚 7 | OUT B — Output of amplifier B |
| 引脚 8 | V+ — Positive supply |
典型应用
LM833MMX/NOPB 适用于 6 应用s: Stereo Audio Preamplifier, Microphone Preamplifier, Active Audio Equalizer, Audio Mixer Summing Amplifier, Headphone Driver Buffer, Active Crossover Network.
Stereo Audio Preamplifier
The LM833MMX/NOPB serves as the active gain stage in stereo preamplifiers where the dual op-amp topology provides matched channel performance. With 15 MHz GBW and 7 V/us slew rate, the device preserves full audio bandwidth (20 Hz to 20 kHz) with negligible harmonic distortion, while 4.5 nV/sqrt(Hz) input noise density ensures a low noise floor that supports high dynamic range. The 8-VSSOP package occupies minimal PCB area in consumer audio receivers and preamps.
推荐
Microphone Preamplifier
The LM833MMX/NOPB delivers low input bias current (300 nA max) and low input voltage noise (4.5 nV/sqrt(Hz)), both critical for microphone preamplifier designs. When configured as an inverting or non-inverting mic preamp with gain of 10-50, the op-amp preserves the low-level microphone signal with minimal self-noise contribution. The wide supply range (±2.5 V to ±15 V) accommodates both phantom-power microphone circuits and consumer electret designs.
推荐
Active Audio Equalizer
The LM833MMX/NOPB is well-suited to active equalizer circuits where multiple filter stages require a high-performance dual op-amp with sufficient gain bandwidth. The 15 MHz GBW ensures that multi-pole active filters remain stable and accurate across the audio band, while the dual-channel integration allows each IC to handle two filter stages. The VSSOP package fits compact multi-band EQ boards.
推荐
Audio Mixer Summing Amplifier
The LM833MMX/NOPB performs summing-amplifier duties in audio mixer consoles, where multiple input channels are combined into a master output. The high slew rate (7 V/us) prevents transient distortion on percussive audio peaks, while the dual op-amp configuration allows one IC to handle a stereo pair of summing buses. The wide supply range (±15 V) provides ample headroom for line-level signals.
推荐
Headphone Driver Buffer
The LM833MMX/NOPB can drive headphone loads in buffer configurations where the op-amp must provide low output impedance and low distortion at audio frequencies. With ±15 V supplies, the device can swing enough voltage to drive 32-ohm headphones with adequate headroom, while the 7 V/us slew rate preserves transient response. Add a 50-100 ohm series output resistor for short-circuit protection.
推荐
Active Crossover Network
The LM833MMX/NOPB builds active 2-way or 3-way crossover networks for loudspeaker systems, where Linkwitz-Riley or Butterworth filter responses require matched dual op-amps. The 15 MHz GBW ensures clean filter rolloff above the audio band, minimizing phase distortion at the crossover frequency. The dual op-amp supports one filter section per IC, simplifying PCB layout for multi-way speakers.
推荐
推荐产品汇总
工程参考数据： LM833MMX/NOPB ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LM833MM/NOPB | LM833MM | LM2904BIDR | INA819IDR |
|---|---|---|---|---|---|
| Package | 8-VSSOP (DGK) | 8-VSSOP (DGK) - same | 8-VSSOP (DGK) - same | 8-SOIC - different package | 8-SOIC - different package |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Channels | 2 (Dual) | 2 (Dual) | 2 (Dual) | 2 (Dual) | 1 (Single INA) |
| Packaging Format | Tape & Reel (TR) | Tube | Tube | Tape & Reel | Tape & Reel |
关键差异点
- 15 MHz gain bandwidth product （对比 LM2904BIDR)
- Low input voltage noise （对比 LM2904BIDR)
- Tape and reel packaging （对比 LM833MM/NOPB)
设计说明
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of each supply pin (V+ pin 8 and V- pin 4) to suppress high-frequency noise. For dual-supply designs (±15 V), add a bulk 10-100 uF electrolytic capacitor on each supply rail near the IC. Poor power decoupling is the most common cause of oscillation or high distortion in audio op-amp circuits.
Keep the inverting input traces short and routed away from noisy digital lines to minimize parasitic capacitance that could degrade phase margin. Use a continuous ground plane beneath the IC for low-impedance return paths. For stereo audio applications, maintain matched trace lengths on both channels to preserve gain and phase matching between the dual op-amps.
Estimated: The LM833 input bias current is 300 nA max - at high source impedances above 10 kohm, this bias current can develop offset voltages that affect DC accuracy. Use bias-current compensation resistors or FET-input op-amps for source impedances above 100 kohm. Also note that the LM833 is not unity-gain stable with capacitive loads above 1000 pF directly; add a series resistor of 50-100 ohm at the output if driving cables.
合规信息
NOPB suffix per TI indicates lead-free / Pb-free construction. RoHS compliant. Not AEC-Q100 qualified (consumer/professional audio grade).
