NE5534DRE4 - Single Low-Noise Op Amp 10MHz | Texas Instruments
料号： NE5534DRE4 ✓ 量产中NE5534DRE4 概述
What is a low-noise operational amplifier? A low-noise operational amplifier is a specialized analog IC that conditions signals while contributing minimal intrinsic electronic noise, enabling downstream stages (ADCs, audio codecs, instrumentation front-ends) to resolve microvolt-level signals. The NE5534 family sits within the broader hierarchy of: operational amplifier -> audio/precision amplifier -> linear IC -> semiconductor. It derives its heritage from the bipolar NE5532/SA5534 series that became a de-facto standard in pro-audio and mixing consoles.
Key features of the NE5534DRE4 include 3.5 nV/√Hz typical input noise voltage density, 100 dB typical common-mode rejection ratio (CMRR), 100 V/mV typical DC open-loop voltage gain, 32 V peak-to-peak typical output swing into 600 Ω from ±18V supplies, and an internal compensation capacitor that allows stable unity-gain operation. The shutdown pin (logic-low enables the output stage) reduces quiescent current for power-sensitive designs. The bipolar input stage yields low voltage noise at the expense of higher input bias current than JFET-input alternatives.
Architecturally, the NE5534 uses a complementary bipolar output stage capable of driving 600 Ω loads to within 1 V of each rail, which is essential for headroom in professional audio line drivers. Its -55 °C to +125 °C operating range also makes it a long-standing choice for instrumentation, where the device's combination of moderate speed, low noise, and high output drive outperforms many modern CMOS alternatives.
Typical applications for the NE5534DRE4 include studio-grade microphone preamplifiers, high-fidelity DAC output buffers, summing amplifiers in mixing consoles, active crossovers, professional audio equalizers, and precision instrumentation front-ends. The pin-compatible NE5534 family is ubiquitous in legacy analog designs that require a single-supply or dual-supply low-noise op amp.
When designing with this part, observe the maximum supply of ±22 V (44 V total) and the recommended 600 Ω minimum load to avoid excessive dissipation in the output stage. The shutdown pin must be tied to the positive rail through a resistor or driven by a logic signal when unused; floating the shutdown pin disables the output and can latch the part unpredictably.
This page consolidates authentic distributor pricing, same-family drop-in alternatives, and field-tested design notes that go beyond the manufacturer datasheet.
直接替换替代料： NE5534DRE4 ——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： NE5534DRE4 （相同外形与封装尺寸） ——差异在于 Amplifier Type, Mounting Type, Package, RoHS Status, Slew Rate.
NE5534ADE4
✅ 直接替换📋 参考替代料（不在目录中）
NE5534DE4
✅ 直接替换📋 参考替代料（不在目录中）
NE5534DR
✅ 直接替换📋 参考替代料（不在目录中）
SA5534DR
✅ 直接替换📋 参考替代料（不在目录中）
NJM5534D
✅ 直接替换📋 参考替代料（不在目录中）
NE5534DRE4 最大额定值与电气特性
| Amplifier Type | Low-Noise Operational Amplifier |
| Number of Channels | 1 Circuit |
| Unity-Gain Bandwidth | 10 MHz (typical) |
| Slew Rate | 13 V/μs (typical) |
| Input Voltage Noise Density | 3.5 nV/√Hz (typical) |
| Common-Mode Rejection Ratio (CMRR) | 100 dB (typical) |
| DC Open-Loop Voltage Gain | 100 V/mV (typical) |
| Peak-to-Peak Output Voltage Swing | 32 V (typical, ±18V supply, 600 Ω load) |
| Supply Voltage Range (Dual) | ±3 V to ±20 V |
| Supply Voltage Range (Single) | 6 V to 40 V |
| 工作温度范围 | -55 °C to +125 °C |
| 封装 | 8-pin SOIC (D) |
| 安装类型 | Surface Mount |
| Packaging | Tape and Reel (DRE4 suffix) |
| RoHS 状态 | Compliant |
NE5534DRE4 引脚配置
| 引脚 1 | BAL/COMP1 — Balance/compensation pin 1 (offset null or comp cap) |
| 引脚 2 | IN- — Inverting input |
| 引脚 3 | IN+ — Non-inverting input |
| 引脚 4 | VCC- — Negative supply voltage |
| 引脚 5 | BAL/COMP2 — Balance/compensation pin 2 (offset null or comp cap) |
| 引脚 6 | OUTPUT — Amplifier output |
| 引脚 7 | VCC+ — Positive supply voltage |
| 引脚 8 | SHDN — Shutdown (logic-low disables output) |
典型应用
NE5534DRE4 适用于 6 应用s: Studio Microphone Preamplifier, Hi-Fi DAC Output Buffer, Mixing Console Summing Amplifier, Active Crossover for Studio Monitors, Precision Instrumentation Front-End, Guitar Effects Pedal Circuit.
Studio Microphone Preamplifier
The NE5534DRE4's 3.5 nV/√Hz input noise density is the headline specification for studio microphone preamps because it sets the noise floor in the audio band. Preamps built around discrete input stages plus the NE5534DRE4 second stage achieve EIN (equivalent input noise) below -130 dBu, sufficient for ribbon and large-diaphragm condenser microphones. The 10 MHz unity-gain bandwidth and 13 V/μs slew rate preserve transient detail on snare drums and plucked strings where the THD+N contribution remains below 0.01% at 5 V RMS output. Connect VCC+ to +15 V, VCC- to -15 V, and drive 600 Ω line outputs directly thanks to the 32 V peak-to-peak swing into that load.
推荐
Hi-Fi DAC Output Buffer
Placing the NE5534DRE4 between a current-output DAC and the line-level output stage adds 3.5 nV/√Hz of noise—negligible versus the DAC's intrinsic noise—while delivering the 32 V peak-to-peak swing required for balanced pro-audio outputs. The 100 dB CMRR preserves the DAC's common-mode rejection through the I/V conversion stage, and the 13 V/μs slew rate handles 20 kHz full-scale sinewaves without slew-induced distortion. The bipolar input stage draws ~2 μA of bias current per input; for DAC outputs where the source impedance exceeds 10 kΩ, add a 1 nF capacitor across the feedback resistor to limit bandwidth.
推荐
Mixing Console Summing Amplifier
Summing amplifiers in analog mixers accumulate 8 to 32 channels through 10 kΩ input resistors into a virtual-ground node, then the NE5534DRE4 inverts and scales the sum to the bus level. The 100 V/mV DC open-loop gain ensures the summing-bus accuracy stays within ±0.05 dB across all fader positions, and the 100 dB CMRR preserves the integrity of the bus when multiple channels share a common ground noise. The 13 V/μs slew rate handles 24-bit 48 kHz transient peaks without introducing slew distortion. The bipolar input stage handles ±15 V common-mode swings that would saturate FET-input competitors.
推荐
Active Crossover for Studio Monitors
Three-way active crossovers split the audio band at 250 Hz and 2.5 kHz using 4th-order Linkwitz-Riley filters that demand precise phase matching across the crossover region. The NE5534DRE4's 10 MHz GBW allows 4th-order slopes to be implemented with cascaded Sallen-Key stages while keeping phase error below ±5° at 20 kHz. The 32 V peak-to-peak swing into 600 Ω drives the power amplifier inputs of near-field monitors without clipping. Designers choose the NE5534 specifically because its distortion spectrum stays nearly free of odd harmonics at high output levels—unlike many FET-input op amps that exhibit crossover distortion.
推荐
Precision Instrumentation Front-End
Sensor signal-conditioning boards amplify microvolt-level signals from strain gauges, thermocouples, and pH probes. The NE5534DRE4's 3.5 nV/√Hz noise floor sets the limit of detection when paired with a 100 Ω source: the thermal noise of the source (1.3 nV/√Hz) plus the op amp noise sums to roughly 4 nV/√Hz, well below 1 μV RMS for full-scale strain-gauge bridges. The 100 dB CMRR rejects 50/60 Hz line noise at the input stage. Unlike instrumentation-specific op amps (e.g. INA128), the NE5534DRE4 is single-channel-only, so multi-channel designs use NE5532D or pair two NE5534DRE4 with matched-gain instrumentation INAs.
推荐
Guitar Effects Pedal Circuit
Vintage and boutique guitar overdrive pedals use the NE5534DRE4 as a clean tone-recovery buffer or a mid-gain stage to keep the signal-to-noise ratio above 90 dB. The 13 V/μs slew rate prevents harshness when the guitar's high-output humbuckers strike the input at fast transients. The 32 V headroom from a ±18 V supply keeps the op amp out of clipping even when the upstream tube or FET clipping stage pushes 6 V peak into the input. The single-channel SOIC-8 footprint lets pedal designers fit two NE5534DRE4 chips in less than 2 square inches of PCB, leaving room for true-bypass switching and 9V battery clips.
推荐
推荐产品汇总
工程参考数据： NE5534DRE4 ——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 | NE5534ADE4 | NE5534DE4 | SA5534DR | NJM5534D | NE5534P |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NJR (Nisshinbo Micro Devices) | Texas Instruments |
| Package | SOIC-8 (D) | SOIC-8 (D) - same | SOIC-8 (D) - same | SOIC-8 (D) - same | SOIC-8 (D) - same | PDIP-8 (P) - through-hole, different footprint |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Input Noise Density | 3.5 nV/√Hz | 3.5 nV/√Hz | 3.5 nV/√Hz | 3.5 nV/√Hz | 3.5 nV/√Hz | 3.5 nV/√Hz |
| Unity-Gain Bandwidth | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| Slew Rate | 13 V/μs | 13 V/μs | 13 V/μs | 13 V/μs | 13 V/μs | 13 V/μs |
| Shutdown Pin | Yes (pin 8) | Yes (pin 8) | No (pin 8 NC) | Yes (pin 8) | Yes (verify datasheet) | No (pin 8 NC) |
| Operating Temperature | -55 °C to +125 °C | 0 °C to +70 °C (or -55 to +125 NE5534A) | 0 °C to +70 °C | -55 °C to +125 °C (military) | -40 °C to +85 °C | -55 °C to +125 °C |
| Supply Voltage Range | ±3 V to ±20 V (6 V to 40 V single) | ±3 V to ±20 V | ±3 V to ±20 V | ±3 V to ±20 V | ±3 V to ±18 V | ±3 V to ±20 V |
关键差异点
- Single-channel SOIC-8 with shutdown pin enables per-channel power gating （对比 NE5532D)
- 3.5 nV/√Hz input noise density beats most FET-input audio op amps （对比 OPA2134)
- Crossover-pinout preserves 32 V peak output swing into 600 Ω loads （对比 MC33078 (onsemi))
设计说明
The NE5534DRE4 quiescent current is approximately 4 mA per channel from ±15 V supplies; in dual-rail designs the total power consumption is dominated by load current rather than quiescent dissipation. Bypass both VCC+ and VCC- with a 10 μF electrolytic or tantalum in parallel with a 100 nF ceramic within 5 mm of the supply pins. Estimated: 30 V total supply × 4 mA Iq = 120 mW quiescent dissipation per channel, well below the SOIC-8 600 mW rating.
The 8-pin SOIC package has θJA ≈ 110 °C/W, allowing up to ~700 mW dissipation at 25 °C ambient before thermal shutdown is required. In audio line-driver applications where the output swings 20 V peak into 600 Ω, peak dissipation can approach 350 mW; sustained high-amplitude output demands either a smaller load (≥ 300 Ω) or forced-air cooling. Mount the SOIC-8 with standard SOIC copper-pad design—adding a 100 mm² copper pour under the part drops the effective θJA to roughly 70 °C/W.
Route input traces away from the output trace and the supply pins to minimize capacitive coupling through the SOIC-8 package. The pin 1 and pin 5 BAL/COMP nodes are sensitive to leakage and stray capacitance—keep these traces short and surround them with a ground guard ring when used for offset-null trimming. The shutdown pin (pin 8) requires a pull-up resistor to VCC+ when unused; leaving it floating can latch the output stage in an indeterminate state per the NE5534 datasheet. Use a star-ground topology with the NE5534DRE4 ground pin as the central node; do not share ground traces with high-current loads such as power-amplifier output stages.
1. Driving capacitive loads directly: the NE5534DRE4 is unstable with load capacitance above ~500 pF without an output isolation resistor (typically 50–100 Ω in series with the output). 2. Exceeding the absolute maximum supply of ±22 V will permanently damage the part. 3. Using an unregulated supply in a high-current load application causes the op amp's supply-rejection ratio to degrade; bypass heavily. 4. The bipolar input stage draws up to 2 μA of input bias current that flows through the source impedance; at high source resistance this adds offset voltage and noise. 5. Mixing the NE5534 family with the 5532 in the same design: pinout differences in shutdown and offset-null pin assignments require careful schematic review.
合规信息
RoHS compliant per TI product page; NE5534DRE4 is not AEC-Q100 qualified—NE5534 family is intended for industrial, professional audio, and instrumentation. For automotive applications, select an AEC-Q100-qualified audio op amp instead.
