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Texas Instruments MC33078DR-NG
- Part No.:
- MC33078DR-NG
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33078DR-NG.pdf
- Description:
- PROTOTYPE
- Quantity:
- Payment:
- Shipping:
Inventory:2,318
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Product details
Overview
MC33078DR-NG from Texas Instruments is a dual high-speed, low-noise bipolar operational amplifier designed for precision audio and data-signal conditioning. It delivers 7 V/µs slew rate, 16 MHz gain-bandwidth product, 4.5 nV/√Hz input voltage noise, ±18 V dual-supply operation, and 0.002% total harmonic distortion - enabling high-fidelity signal amplification in studio-grade audio preamps and sensor front-ends.
For engineers reviewing the MC33078DR-NG datasheet, MC33078DR-NG pinout, MC33078DR-NG application, or MC33078DR-NG equivalent, key selection criteria include its wide supply range (±5 V to ±18 V), rail-to-rail output swing capability (±14.6 V at 10 kΩ), low offset voltage (0.15 mV typ), symmetrical sink/source current (±29 mA), and thermal stability across –40°C to +125°C industrial temperature range.
Technical Context
The MC33078DR-NG integrates two matched, internally compensated op-amp channels using bipolar junction transistor (BJT) input stages optimized for low-noise and high-speed performance. Its architecture supports unity-gain stable operation with 100 pF load capacitance and provides >40° phase margin under typical conditions.
It features symmetrical output drive (±29 mA short-circuit current), wide common-mode input range (±14 V), and robust open-loop AC gain (800 at 20 kHz). The device maintains low distortion (<0.002% THD) and high CMRR (100 dB typ) across its full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±5 V to ±18 V - supports wide-range dual supplies without external regulation |
| Slew Rate | 7 V/µs - enables clean amplification of fast transients up to ~120 kHz power bandwidth |
| Gain-Bandwidth Product | 16 MHz - allows stable closed-loop gain ≥100 at 100 kHz |
| Input Voltage Noise | 4.5 nV/√Hz at 1 kHz - critical for low-level audio and sensor signal integrity |
| Input Offset Voltage | 0.15 mV (typ) - reduces DC error in precision instrumentation and active filters |
| Total Harmonic Distortion | 0.002% at 3 Vrms - preserves signal fidelity in high-end analog audio paths |
| Output Voltage Swing | ±14.6 V into 10 kΩ - delivers near-rail output headroom for dynamic signal handling |
Pinout & Package
MC33078DR-NG uses an 8-pin SOIC (D) package with 1.27 mm pitch, 3.9 mm width, and 1.75 mm max height - compatible with standard surface-mount assembly processes and IPC-7351 footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives external load or feedback network |
| 2 | IN1− | Inverting input of Amp 1 - accepts feedback or differential signal reference |
| 3 | IN1+ | Non-inverting input of Amp 1 - connects to signal source or bias network |
| 4 | VCC− | Negative supply rail - must be decoupled locally with 0.1 µF ceramic capacitor |
| 5 | VCC+ | Positive supply rail - requires local 0.1 µF ceramic decoupling |
| 6 | OUT2 | Amplifier 2 output - independent channel for dual-path signal processing |
| 7 | IN2− | Inverting input of Amp 2 - isolated signal path for stereo or differential pair |
| 8 | IN2+ | Non-inverting input of Amp 2 - enables dual-channel configuration without crosstalk |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise BJT input stage | 4.5 nV/√Hz input voltage noise enables high-SNR audio and sensor amplification |
| High slew rate & GBW | 7 V/µs slew rate + 16 MHz GBW supports wideband active filters and fast-settling buffers |
| Large symmetrical output swing | ±14.6 V output swing into 10 kΩ preserves dynamic range in ±15 V systems |
| Low THD + high open-loop gain | 0.002% THD and 110 dB open-loop gain ensure minimal distortion in closed-loop configurations |
| Industrial temperature grade | –40°C to +125°C operation validated for automotive and industrial control environments |
Applications
| Professional Audio Preamp | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Low-noise microphone preamplification in broadcast mixing consoles and digital audio workstations. IC Role / Device Role / Timing Role: Dual-channel voltage amplifier with matched gain stages for balanced XLR inputs and phantom power isolation. Use Value: 4.5 nV/√Hz noise floor and 0.002% THD preserve transient detail and harmonic integrity across 20 Hz–20 kHz. | Use Scenario: Amplifying millivolt-level outputs from strain gauges and RTDs in factory automation PLC modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with adjustable gain and offset correction. Use Value: 0.15 mV input offset and ±14.6 V output swing enable accurate 16-bit ADC interfacing over full industrial temperature range. |
| Medical ECG Analog Front-End | Test & Measurement Instrumentation |
Use Scenario: Biopotential signal amplification in portable ECG monitors requiring low-frequency stability and noise immunity. IC Role / Device Role / Timing Role: Dual-channel differential amplifier with high CMRR (100 dB) and low 1/f noise for sub-Hz biosignal acquisition. Use Value: 800 open-loop gain at 20 kHz and ±14 V common-mode input range reject electrode motion artifacts effectively. | Use Scenario: Active filtering and signal buffering in benchtop oscilloscopes and arbitrary waveform generators. IC Role / Device Role / Timing Role: Unity-gain stable buffer and high-speed gain stage for 10 MHz analog signal paths. Use Value: 16 MHz GBW and 7 V/µs slew rate support clean 10 Vpp signals up to 100 kHz without slewing distortion. |
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 max), identical 7 V/µs slew rate and 10 MHz GBW | Optimized for lower-cost audio applications; less suitable for high-impedance sensor interfaces | Select NE5532DR where cost sensitivity outweighs ultra-low input bias requirements |
| OPA2134PA | FET-input architecture (2 pA IB), lower noise (8 nV/√Hz), but slower slew rate (20 V/µs) and higher cost | Better for ultra-high-impedance sources (e.g., piezoelectric sensors); not drop-in due to different biasing | Choose OPA2134PA when input impedance >1 GΩ is mandatory and speed <10 MHz suffices |
Compared with NE5532DR and OPA2134PA, MC33078DR-NG offers superior noise performance (4.5 nV/√Hz) and wider supply range (±18 V) while maintaining robust industrial temperature rating - making it optimal for high-fidelity, wide-dynamic-range analog signal chains where bipolar precision and thermal reliability are critical.
Availability
MC33078DR-NG is available at Aetrix Electronics and suitable for professional audio equipment, industrial sensor interfaces, medical diagnostics devices, and test instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for MC33078DR-NG 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 for industrial, automotive, and communications markets.
The MC33078DR-NG belongs to TI's legacy high-performance bipolar op-amp family, engineered specifically for demanding analog signal conditioning in audio, instrumentation, and control systems where low noise, high speed, and thermal stability are essential.
FAQ
What is the maximum operating temperature for MC33078DR-NG?
The MC33078DR-NG is rated for operation from –40°C to +125°C, verified per TI's production data and packaging specifications. This extended temperature range makes MC33078DR-NG suitable for under-hood automotive subsystems and industrial control cabinets where ambient temperatures exceed standard commercial limits. Thermal derating guidelines apply above 100°C ambient.
Does MC33078DR-NG support single-supply operation?
Yes, MC33078DR-NG supports single-supply operation within its specified common-mode input voltage range (±14 V relative to midpoint), provided the input signal remains within VICR limits and output swing accommodates the chosen rail configuration. For true single-supply use, level-shifting or biasing networks are required - unlike rail-to-rail input/output op-amps, MC33078DR-NG does not operate down to VCC− or up to VCC+.
What is the recommended PCB layout practice for MC33078DR-NG to minimize noise coupling?
TI recommends placing 0.1 µF ceramic decoupling capacitors directly between VCC+ and VCC− pins (Pins 5 and 4), using short traces and ground-plane vias. Separate analog and digital ground planes should be joined at a single point near the IC. Input traces must be shielded from output and power lines, and the MC33078DR-NG's exposed pad (if present in variant) must be grounded - though the SOIC D package used by MC33078DR-NG has no exposed thermal pad.
Can MC33078DR-NG drive capacitive loads without oscillation?
MC33078DR-NG can drive up to 380 pF (RL = 600 Ω), 560 pF (RL = 2 kΩ), or 590 pF (RL = 10 kΩ) before instability occurs, per TI's pulse response characterization. For larger loads, add a small series resistor (e.g., 10–50 Ω) between the output and capacitive load to isolate the pole and restore phase margin - this technique is validated in TI's Application Information section for MC33078DR-NG.
Is MC33078DR-NG RoHS compliant and lead-free?
Yes, MC33078DR-NG is RoHS compliant and features NiPdAu (NIPDAU) lead finish, as confirmed in TI's Package Option Addendum. It meets JEDEC Level-1 moisture sensitivity rating with unlimited peak reflow tolerance at 260°C, supporting standard lead-free SMT assembly processes without special handling requirements.
MC33078DR-NG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Single-Ended
- 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
MC33078DR-NG FAQ
1.How can I place an order for MC33078DR-NG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33078DR-NG 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 MC33078DR-NG reliable?
The price and inventory of MC33078DR-NG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33078DR-NG is usually 5 days.
3.What payment methods are accepted for MC33078DR-NG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33078DR-NG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33078DR-NG?
MC33078DR-NG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33078DR-NG 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 MC33078DR-NG?
For technical support, including MC33078DR-NG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33078DR-NG requirements.
6.How does Aetrix verify that MC33078DR-NG is sourced from the original manufacturer or authorized distributors?
All MC33078DR-NG 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 MC33078DR-NG meets industry standards.
7.What is the process for return or replacement of MC33078DR-NG?
All MC33078DR-NG units undergo pre-shipment inspection (PSI). If there is an issue with MC33078DR-NG, 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 MC33078DR-NG part is unused and in its original packaging.
Return procedure for MC33078DR-NG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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