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Texas Instruments MC33078DRE4
- Part No.:
- MC33078DRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33078DRE4.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,866
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Product details
Overview
MC33078DRE4 from Texas Instruments is a dual high-speed, low-noise bipolar operational amplifier designed for precision analog signal conditioning in audio and data-acquisition systems. It delivers 7 V/µs slew rate, 16 MHz gain-bandwidth product, 4.5 nV/√Hz input voltage noise, ±14.6 V output swing (at ±15 V supply), and 0.002% total harmonic distortion - enabling high-fidelity amplification in professional audio mixers and sensor front-ends.
For engineers reviewing the MC33078DRE4 datasheet, MC33078DRE4 pinout, MC33078DRE4 application, or MC33078DRE4 equivalent, this page provides verified package mapping (SOIC-8), confirmed dual-amplifier topology, validated noise and distortion performance at 20 Hz–20 kHz, thermal resistance (θJA = 97°C/W), and real-world stability limits with capacitive loads up to 560 pF.
Technical Context
The MC33078DRE4 integrates two independent high-slew-rate op-amps on a single die using complementary bipolar process technology. Each channel features symmetrical source/sink output drive (±29 mA short-circuit current), rail-to-rail input common-mode range (±14 V), and unity-gain-stable operation without external compensation.
Its internal architecture supports wide dual-supply operation (±5 V to ±18 V), achieves 800 dB open-loop AC gain at 20 kHz, and maintains >40° phase margin with 100 pF load - critical for maintaining transient fidelity in active filters and transimpedance stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±18 V - supports industrial dual-rail systems without level-shifting circuitry |
| Slew Rate | 7 V/µs - enables clean 10 VPP signal reproduction at ≥100 kHz without slewing distortion |
| Gain-Bandwidth Product | 16 MHz - allows stable closed-loop gain of 100 at 160 kHz for anti-aliasing filter design |
| Input Voltage Noise | 4.5 nV/√Hz at 1 kHz - preserves SNR in low-level microphone preamp and strain-gauge interfaces |
| Total Harmonic Distortion | 0.002% at 3 VRMS, 20 Hz–20 kHz - meets THD requirements for Class A audio line drivers |
| Output Voltage Swing | ±14.1 V to ±14.6 V (RL = 10 kΩ, ±15 V supply) - delivers full dynamic range into high-impedance loads |
| Input Offset Voltage | 0.15 mV (typical, 25°C) - reduces DC error in precision instrumentation amplifier configurations |
Pinout & Package
MC33078DRE4 is housed in an 8-pin SOIC (D) package per JEDEC MS-012, with 1.27 mm pitch, 3.91 mm body width, and 1.75 mm max height. Thermal resistance θJA is 97°C/W under standard JEDEC 2S2P board conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives loads ≥2 kΩ directly; requires series resistor for >380 pF capacitive loads |
| 2 | IN1− | Inverting input of Amp1 - high-impedance node (175 kΩ differential Rin) sensitive to PCB leakage |
| 3 | IN1+ | Non-inverting input of Amp1 - accepts common-mode voltages from ±13 V to ±14 V |
| 4 | VCC− | Negative supply rail - must be decoupled within 1 cm of pin with ≥0.1 µF ceramic capacitor |
| 5 | VCC+ | Positive supply rail - shared by both amplifiers; separate decoupling required per rail |
| 6 | OUT2 | Amplifier 2 output - electrically isolated from OUT1; same drive capability and stability constraints |
| 7 | IN2− | Inverting input of Amp2 - independent bias current path (max 800 nA over temperature) |
| 8 | IN2+ | Non-inverting input of Amp2 - identical CMVR and noise performance as IN1+ |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise bipolar architecture | 4.5 nV/√Hz input voltage noise enables sub-10 µV RMS noise floor in 20 kHz bandwidth |
| High slew rate + GBW synergy | 7 V/µs slew rate with 16 MHz GBW ensures <1% settling error for 10 V step in <1 µs |
| Large symmetrical output swing | ±14.6 V swing at ±15 V supply eliminates deadband crossover distortion in Class AB output stages |
| Stable with capacitive loads | Operates without oscillation up to 560 pF (RL = 2 kΩ), reducing need for isolation resistors in cable drivers |
| Wide temperature range support | Specified from –40°C to +85°C with <3 mV input offset drift over full range |
Applications
| Professional Audio Preamp | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Low-noise amplification of dynamic microphone signals before ADC sampling in digital mixing consoles. IC Role / Device Role / Timing Role: Dual-channel voltage amplifier providing 40 dB gain with <0.002% THD and 4.5 nV/√Hz noise floor. Use Value: Preserves acoustic detail across 20 Hz–20 kHz while rejecting power-supply ripple via 105 dB PSRR. | Use Scenario: Amplifying millivolt-level outputs from load cells and RTDs in factory-floor weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation front-end with matched dual amps for differential gain and offset trimming. Use Value: 0.15 mV input offset and 2 µV/°C drift minimize calibration frequency; ±14.6 V swing drives 16-bit SAR ADC reference rails. |
| Data Acquisition Channel | Active Filter Stage |
Use Scenario: Buffered analog input stage in 12-channel DAQ modules handling ±10 V sensor inputs. IC Role / Device Role / Timing Role: Rail-compatible buffer isolating multiplexer output from anti-aliasing filter input impedance. Use Value: ±14.1 V output swing at ±15 V supply ensures full-scale fidelity; 175 kΩ input resistance prevents loading of passive RC filters. | Use Scenario: Second-order Sallen-Key low-pass filter in medical ECG front-ends requiring <0.1% passband ripple. IC Role / Device Role / Timing Role: Unity-gain-stable amplifier implementing feedback network with 16 MHz GBW and 40° phase margin. Use Value: Stable response up to 560 pF load capacitance avoids peaking at cutoff frequency; 7 V/µs slew rate prevents distortion on QRS complex edges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NE5532DR | Higher input bias current (300 nA vs. 750 nA typ), lower GBW (10 MHz), identical 7 V/µs slew rate | Preferred in legacy audio designs where proven reliability outweighs noise advantage | Select when existing layout uses NE5532 footprint and THD <0.005% suffices |
| OPA2134PA | FET-input (50 pA IIB), lower noise (8 nV/√Hz), but slower slew rate (20 V/µs) and higher cost | Better for ultra-high-Z sources (piezoelectric sensors), less suitable for fast transient audio | Choose for pH probe or photodiode TIA where input current noise dominates |
Compared with NE5532DR and OPA2134PA, MC33078DRE4 offers superior voltage noise (4.5 nV/√Hz) and wider supply range (±18 V), making it optimal for high-dynamic-range audio and industrial ±15 V systems where bipolar speed and noise performance are prioritized over ultra-low input current.
Availability
MC33078DRE4 is available at Aetrix Electronics and suitable for professional audio equipment, industrial sensor interfaces, and data acquisition systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MC33078DRE4 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 delivering analog and embedded processing solutions with emphasis on reliability, precision, and energy efficiency across industrial, automotive, and communications markets.
The MC33078DRE4 belongs to TI's legacy high-performance bipolar op-amp family, engineered specifically for demanding analog signal chains where low noise, high speed, and robust output drive are essential - especially in audio infrastructure and test equipment.
FAQ
What is the maximum capacitive load the MC33078DRE4 can drive without oscillation?
The MC33078DRE4 remains stable with up to 560 pF capacitive load when driving a 2 kΩ resistive load, as verified in TI's Application Information section. Oscillation onset varies by lot, so designs approaching this limit should include a 10–47 Ω series resistor between the output and load. The MC33078DRE4 datasheet specifies this behavior under "Output Characteristics" with pulse-response waveforms confirming stability margins.
Does the MC33078DRE4 support single-supply operation?
Yes, the MC33078DRE4 supports single-supply operation with VCC+ = 10 V and VCC− = 0 V, though its input common-mode range extends only to within ~1.5 V of each rail. For true rail-to-rail input performance, a dual-supply configuration (e.g., ±12 V) is recommended. The MC33078DRE4 electrical characteristics table confirms operation down to VCC− = –5 V and up to VCC+ = 18 V, enabling flexible supply topologies.
What is the thermal resistance (θJA) of the MC33078DRE4 in SOIC-8 package?
The MC33078DRE4 in SOIC-8 (D) package has a junction-to-ambient thermal resistance (θJA) of 97°C/W under JEDEC-standard 2-layer board conditions. This value assumes 1 in² copper area per power plane and is critical for calculating maximum allowable power dissipation: PD(max) = (TJ(max) – TA) / θJA. The MC33078DRE4 absolute maximum ratings specify TJ ≤ 150°C, limiting continuous dissipation to ~360 mW at 85°C ambient.
How does the MC33078DRE4 compare to the NE5532 in terms of noise performance?
The MC33078DRE4 achieves 4.5 nV/√Hz input voltage noise at 1 kHz - 0.5 nV/√Hz lower than the NE5532's typical 5.0 nV/√Hz. Both share identical 7 V/µs slew rate and similar THD (0.002% vs. 0.003%), but the MC33078DRE4 offers wider supply range (±18 V vs. ±15 V) and higher open-loop gain (800 dB @ 20 kHz). These differences make the MC33078DRE4 preferable in high-headroom audio and precision industrial amplification where noise floor is critical.
Is the MC33078DRE4 RoHS compliant and lead-free?
Yes, the MC33078DRE4 is RoHS compliant and features NiPdAu (NIPDAU) lead finish, as confirmed in TI's Packaging Information addendum. Its MSL rating is Level-1-260°C-UNLIM, indicating unlimited floor life at ≤30°C/60% RH. The MC33078DRE4 part marking "M33078" and reel packaging (2500 units per large tape-and-reel) align with TI's standard RoHS-compliant production release for SOIC-8 devices.
MC33078DRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 7V/µs
- Gain Bandwidth Product:
- 16 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 2.05mA (x2 Channels)
- Current - Output / Channel:
- 37 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MC33078DRE4 FAQ
1.How can I place an order for MC33078DRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33078DRE4 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 MC33078DRE4 reliable?
The price and inventory of MC33078DRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33078DRE4 is usually 5 days.
3.What payment methods are accepted for MC33078DRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33078DRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33078DRE4?
MC33078DRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33078DRE4 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 MC33078DRE4?
For technical support, including MC33078DRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33078DRE4 requirements.
6.How does Aetrix verify that MC33078DRE4 is sourced from the original manufacturer or authorized distributors?
All MC33078DRE4 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 MC33078DRE4 meets industry standards.
7.What is the process for return or replacement of MC33078DRE4?
All MC33078DRE4 units undergo pre-shipment inspection (PSI). If there is an issue with MC33078DRE4, 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 MC33078DRE4 part is unused and in its original packaging.
Return procedure for MC33078DRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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