My Inquiry
My Account
Texas Instruments MC33078DR
- Part No.:
- MC33078DR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC33078DR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,786
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC33078DR 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, ±14.6 V output swing (at ±15 V supply), and 0.002% total harmonic distortion - enabling high-fidelity signal amplification in analog front-ends and instrumentation circuits.
For engineers reviewing the MC33078DR datasheet, MC33078DR pinout, MC33078DR application, or MC33078DR equivalent, key selection considerations include dual-supply operation (±5 V to ±18 V), SOIC-8 package compatibility, low-input-offset-voltage performance (0.15 mV typ), and stability with capacitive loads up to 590 pF - critical for audio preamps, active filters, and sensor signal chains.
Technical Context
The MC33078DR implements a fully differential bipolar input stage with symmetrical sink/source output drive, supporting rail-to-rail input common-mode range (±14 V) and large-signal transient response without crossover distortion. Its internal compensation ensures stable unity-gain operation with ≥40° phase margin at 100 pF load.
Designed for dual-supply systems, it maintains low THD (0.002%) across 20 Hz–20 kHz at AV = 1 and RL = 2 kΩ, while achieving 800 V/V open-loop AC gain at 20 kHz - confirming robust small-signal linearity and wide dynamic range for high-resolution analog processing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 7 V/µs - enables clean amplification of fast transients (e.g., pulse signals up to ~100 kHz) without slew-induced distortion |
| Gain-Bandwidth Product | 16 MHz - supports stable closed-loop gain ≥100 at 100 kHz, suitable for anti-aliasing and reconstruction filters |
| Input Voltage Noise | 4.5 nV/√Hz @ 1 kHz - minimizes added noise in low-level sensor interfaces (e.g., piezoelectric pickups, strain gauges) |
| Output Voltage Swing | ±14.6 V @ ±15 V supply - delivers >97% of rail-to-rail swing into 10 kΩ, preserving dynamic headroom in line-driver stages |
| Total Harmonic Distortion | 0.002% @ 3 Vrms, 20 Hz–20 kHz - meets Hi-Fi audio requirements and precision measurement accuracy thresholds |
| Input Offset Voltage | 0.15 mV (typ) - reduces DC error in DC-coupled integrators and precision gain blocks without trimming |
| Supply Range | ±5 V to ±18 V - accommodates industrial ±12 V, audio ±15 V, and legacy ±5 V systems without level-shifting |
Pinout & Package
MC33078DR is housed in an 8-pin SOIC (D) package per JEDEC MS-012, variation AA, with 1.27 mm pitch, 3.90 mm body width, and 1.75 mm max height. Pin 1 is located at the top-left corner adjacent to the index notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplifier 1 output - drives external load directly; capable of ±29 mA source/sink current |
| 2 | IN1− | Inverting input of Amp 1 - high-impedance node (175 kΩ differential resistance) for feedback network connection |
| 3 | IN1+ | Non-inverting input of Amp 1 - accepts reference or signal source; common-mode range extends to ±14 V |
| 4 | VCC− | Negative supply rail - must be connected to system ground or negative voltage; decoupling recommended within 1 cm |
| 5 | VCC+ | Positive supply rail - powers both amplifiers; requires local 0.1 µF ceramic bypass capacitor |
| 6 | OUT2 | Amplifier 2 output - independent output stage with identical drive capability and noise performance as OUT1 |
| 7 | IN2− | Inverting input of Amp 2 - electrically isolated from Amp 1 inputs; amp-to-amp isolation >120 dB @ 20 kHz |
| 8 | IN2+ | Non-inverting input of Amp 2 - supports dual-channel configurations such as stereo preamps or differential receivers |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | Bipolar input stage optimized for 4.5 nV/√Hz voltage noise and 0.5 pA/√Hz current noise - ideal for high-Z sensor interfaces |
| High slew rate + GBW synergy | 7 V/µs slew rate paired with 16 MHz GBW enables full-power bandwidth >1.1 MHz at ±10 V output swing |
| Large symmetrical output swing | Delivers ±14.6 V into 10 kΩ with no deadband - eliminates crossover distortion in Class-AB output stages |
| Stable capacitive-load drive | Operates reliably with up to 590 pF load capacitance (RL = 10 kΩ); optional series resistor mitigates oscillation at higher CL |
| Wide temperature operation | Specified from –40°C to +125°C (MC33078DR-NG.A variant), supporting under-hood automotive and industrial environments |
Applications
| Professional Audio Preamp | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Low-noise amplification of microphone or instrument-level signals prior to ADC sampling in studio-grade audio interfaces. IC Role / Device Role / Timing Role: Dual-channel op-amp configured as non-inverting gain stage (AV = 10–100) with DC-coupled input and active low-pass filtering. Use Value: 4.5 nV/√Hz input noise and 0.002% THD preserve signal integrity across 20 Hz–20 kHz, meeting AES17 standards for professional audio equipment. | Use Scenario: Amplifying millivolt-level outputs from thermocouples, RTDs, or bridge-based pressure sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end (with external resistors) providing gain, offset correction, and common-mode rejection. Use Value: 0.15 mV input offset voltage and 100 dB CMRR minimize DC errors, while ±14.6 V swing accommodates wide-range sensor excitation and calibration signals. |
| Active Filter for Data Acquisition | DC Motor Current Sense Amplifier |
Use Scenario: Implementing 4th-order Butterworth anti-aliasing or reconstruction filters in 16-bit data acquisition systems operating at ≤100 kSPS. IC Role / Device Role / Timing Role: Dual op-amp used in cascaded Sallen-Key topology with precise RC component matching for phase-linear response. Use Value: 16 MHz GBW and 7 V/µs slew rate ensure filter group delay flatness and step-response fidelity up to 100 kHz without peaking or ringing. | Use Scenario: High-side or low-side current sensing in 24 V DC motor control circuits, feeding isolated ADCs or comparator thresholds. IC Role / Device Role / Timing Role: Differential amplifier measuring voltage drop across shunt resistor; second amplifier provides level-shifting or gain staging. Use Value: ±18 V absolute max supply rating and ±14.6 V output swing allow direct interfacing with 24 V bus rails and tolerate transient overvoltages during motor commutation. |
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), identical 38 V/µs slew rate but lower 10 MHz GBW; same SOIC-8 package | Optimized for very high slew-rate audio applications; less suitable for high-impedance sensor nodes due to higher IB | Select NE5532DR when prioritizing ultra-low distortion (<0.0005%) at 1 kHz over low-frequency noise or input bias sensitivity |
| OPA2134PA | FET-input architecture (2 pA IB), lower 8 nV/√Hz noise, but only 20 V/µs slew rate and 8 MHz GBW; DIP-8 and SOIC-8 variants available | Better for ultra-high-impedance sources (e.g., photodiode transimpedance); limited bandwidth for fast pulse amplification | Choose OPA2134PA for pH probes or electrophysiology where femtoampere input leakage is critical, not speed |
Compared with NE5532DR and OPA2134PA, the MC33078DR offers superior balance of low noise (4.5 nV/√Hz), high GBW (16 MHz), and robust output drive (±29 mA) in a cost-effective SOIC-8 package - making it optimal for mid-bandwidth precision analog systems requiring both fidelity and drive strength.
Availability
MC33078DR is available at Aetrix Electronics and suitable for professional audio equipment, industrial sensor signal conditioning, active filter design, and DC motor current sensing applications requiring stable component supply and long-term manufacturability.
Supply support for MC33078DR 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, embedded processing, and connectivity technologies, with decades of heritage in high-performance op-amp design.
The MC33078DR belongs to TI's legacy precision bipolar op-amp product line, engineered specifically for demanding analog signal-path applications where low noise, wide bandwidth, and rail-compatible output swing are essential - including audio, test equipment, and industrial automation.
FAQ
What is the maximum load capacitance the MC33078DR can drive without oscillation?
The MC33078DR remains stable with up to 590 pF of capacitive load when driving a 10 kΩ resistive load, as verified in TI's pulse response characterization. For heavier loads, adding a 10–100 Ω series resistor between the output and capacitance restores stability - a technique validated in Figure 2 of the MC33078DR datasheet. Always verify stability under actual board parasitics and layout conditions.
Does the MC33078DR support single-supply operation?
Yes, the MC33078DR supports single-supply operation from 10 V to 36 V (VCC+ to VCC−), with input common-mode range extending to within 1.4 V of either rail. However, its bipolar architecture performs best with dual supplies (e.g., ±12 V or ±15 V); for true single-supply designs requiring rail-to-rail input/output, consider newer CMOS alternatives like the TLV2462.
What is the thermal resistance (θJA) of the MC33078DR in SOIC-8 package?
The MC33078DR in SOIC-8 (D) package has a junction-to-ambient thermal resistance (θJA) of 97°C/W under standard JEDEC PCB mounting conditions (2-layer board, 1 in² copper). This value assumes no additional copper pour or thermal vias; adding thermal relief improves heat dissipation significantly - especially important when delivering >20 mA continuous output current.
How does the MC33078DR compare to the MC33078P in terms of performance and packaging?
The MC33078DR and MC33078P share identical electrical specifications and pinout, differing only in packaging: MC33078DR uses SOIC-8 tape-and-reel (2500 pcs/reel), while MC33078P uses PDIP-8 tube (50 pcs/tube). Both operate from –40°C to +85°C, though the MC33078DR-NG.A variant extends to +125°C - a distinction critical for automotive under-hood use cases.
Is the MC33078DR RoHS compliant and lead-free?
Yes, the MC33078DR is RoHS compliant and features NiPdAu (NIPDAU) lead finish, per TI's Package Option Addendum. It carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH) and is qualified for lead-free reflow up to 260°C peak temperature - fully compatible with modern Pb-free assembly processes.
MC33078DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
MC33078DR FAQ
1.How can I place an order for MC33078DR through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33078DR 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 reliable?
The price and inventory of MC33078DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33078DR is usually 5 days.
3.What payment methods are accepted for MC33078DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33078DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33078DR?
MC33078DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33078DR 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?
For technical support, including MC33078DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33078DR requirements.
6.How does Aetrix verify that MC33078DR is sourced from the original manufacturer or authorized distributors?
All MC33078DR 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 meets industry standards.
7.What is the process for return or replacement of MC33078DR?
All MC33078DR units undergo pre-shipment inspection (PSI). If there is an issue with MC33078DR, 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 part is unused and in its original packaging.
Return procedure for MC33078DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC33078DR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
