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Texas Instruments MCP6294IDR
- Part No.:
- MCP6294IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP6294IDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,372
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Product details
Overview
MCP6294IDR from Texas Instruments is a quad-channel, rail-to-rail input/output operational amplifier optimized for low-power, precision signal conditioning in single-supply systems. It delivers 10-MHz gain bandwidth, 8.7 nV/√Hz input voltage noise at 10 kHz, and 0.6 mA per amplifier quiescent current across 2.4 V to 5.5 V supply. It is used in sensor front-ends, battery-powered medical instrumentation, and analog filters requiring wide dynamic range and stability with capacitive loads.
For engineers reviewing the MCP6294IDR datasheet, MCP6294IDR pinout, MCP6294IDR application, or MCP6294IDR equivalent, key selection criteria include its unity-gain stability, 1 pA input bias current enabling high-impedance source interfacing, extended –40°C to 125°C operating range, and robust EMI rejection-critical for smoke detectors, HVAC controls, and automotive infotainment signal chains.
Technical Context
The MCP6294IDR employs a complementary differential input stage (N- and P-channel pairs) enabling true rail-to-rail common-mode input range extending 100 mV beyond both supply rails across 2.4 V–5.5 V operation. Its class AB output stage achieves 15 mV rail-to-rail swing into 10 kΩ at 5.5 V, with resistive open-loop output impedance improving stability under capacitive loading up to 300 pF.
It features integrated RFI/EMI filtering, no phase reversal during overdrive, and 4-kV HBM ESD protection. The device operates as a single functional mode amplifier-fully active within recommended supply and temperature ranges-with overload recovery time of 0.2 µs and 55° phase margin at unity gain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 10 MHz typical - enables stable unity-gain and higher-gain configurations up to ~100 kHz at G = 100 without compensation. |
| Supply Voltage Range | 2.4 V to 5.5 V - supports direct interface with Li-ion, 3.3 V, and 5 V logic domains without level shifting. |
| Input Bias Current | 1 pA typical - permits use with >100 MΩ source impedances (e.g., photodiode, pH sensor, piezoelectric transducers). |
| Input Voltage Noise | 8.7 nV/√Hz at 10 kHz - ensures low-noise amplification for precision sensor signals without dominating system noise floor. |
| Quiescent Current per Channel | 600 µA typical - allows four independent amplifiers in ultra-low-power portable devices while maintaining 10-MHz bandwidth. |
| Rail-to-Rail I/O | Input extends (V−) −0.1 V to (V+) +0.1 V; output swings to within 15 mV of rails at 5.5 V/10 kΩ - maximizes ADC input dynamic range in single-supply data acquisition. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment monitoring applications. |
Pinout & Package
Package: SOIC-14 (D package), body size 8.65 mm × 3.91 mm, standard JEDEC MS-012 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives external load or next-stage input; rail-to-rail capable with 15 mV headroom at 5.5 V. |
| 2 | −IN A | Inverting input, channel A - forms feedback node in inverting configurations; matched to +IN A for offset minimization. |
| 3 | +IN A | Noninverting input, channel A - accepts high-impedance sensor signals; part of complementary input pair enabling rail-to-rail CMVR. |
| 4 | V+ | Positive supply rail - connects to main system VDD (2.4–5.5 V); decoupling capacitor required near pin for stability. |
| 5 | +IN B | Noninverting input, channel B - electrically isolated from channel A; identical specs enable independent dual-signal processing. |
| 6 | −IN B | Inverting input, channel B - shares same internal architecture as channel A; supports matched gain-setting resistor networks. |
| 7 | OUT B | Amplifier B output - fully independent output stage; no crosstalk with channel A above 100 dB at DC. |
| 8 | OUT C | Amplifier C output - third independent output; enables three-stage filtering or multi-sensor parallel conditioning. |
| 9 | −IN C | Inverting input, channel C - supports cascaded or differential configurations without inter-channel interference. |
| 10 | +IN C | Noninverting input, channel C - matches input characteristics of channels A/B for consistent system-level performance. |
| 11 | V− | Negative supply or ground - reference for all four amplifiers; must be low-impedance return path for accurate common-mode rejection. |
| 12 | +IN D | Noninverting input, channel D - fourth independent input; enables full quad-signal acquisition (e.g., 4-wire RTD, multi-axis sensor). |
| 13 | −IN D | Inverting input, channel D - completes quad-channel set; pinout symmetry simplifies PCB layout for balanced routing. |
| 14 | OUT D | Amplifier D output - final independent output; supports simultaneous drive of four ADC inputs or four analog outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Resistive open-loop output impedance | 100 Ω at 10 MHz - reduces peaking and improves phase margin when driving ≥100 pF capacitive loads without external compensation. |
| Integrated RFI/EMI filter | Rejects >60 dB of 100 MHz–1 GHz RF interference at noninverting input - eliminates need for external ferrite beads in noisy environments. |
| No phase reversal on overdrive | Output remains monotonic during input overvoltage events - prevents latch-up or false triggering in comparator-like applications. |
| 4-kV HBM ESD protection | Withstands human-body model discharges without functional degradation - enhances reliability in manual handling and field-deployed systems. |
| Unity-gain stable | Operates unconditionally stable at G = 1 with no external compensation - simplifies design of buffers, followers, and active filters. |
Applications
| Photodiode Amplifier | Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying weak current from a reverse-biased photodiode in optical smoke detection or ambient light sensing. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with MCP6294IDR configured in inverting mode using precision feedback resistor. Use Value: 1 pA input bias current prevents signal loss across high-value feedback resistors (>100 MΩ); rail-to-rail output ensures full-scale utilization of 12-bit ADC input range. |
Use Scenario: Conditioning millivolt-level outputs from thermocouples, RTDs, or strain gauges in HVAC controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end stage providing gain, filtering, and level-shifting before ADC sampling. Use Value: 8.7 nV/√Hz noise and 10-MHz bandwidth preserve signal integrity for fast transient detection; −40°C to 125°C rating ensures operation in furnace or outdoor enclosures. |
| Medical Instrumentation | Battery-Powered Portable Devices |
Use Scenario: Biopotential signal amplification (ECG, EEG) in handheld diagnostic tools with strict power and noise constraints. IC Role / Device Role / Timing Role: First-stage low-noise, high-input-impedance amplifier isolating patient from system ground and rejecting common-mode interference. Use Value: Rail-to-rail input accommodates electrode offset voltages up to ±300 mV; 0.6 mA per channel enables >100-hour battery life in 3.3 V coin-cell designs. |
Use Scenario: Signal chain in barcode scanners or PDAs requiring compact, low-power analog functions including filtering and buffering. IC Role / Device Role / Timing Role: Quad-channel resource for simultaneous analog tasks: reference buffer, sensor preamp, filter stage, and ADC driver. Use Value: SOIC-14 package fits dense layouts; 2.4 V minimum supply allows operation down to end-of-life battery voltage without brownout reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6284T-E/ST | Same quad rail-to-rail IO, but lower 5-MHz GBW and 1.2 mA IQ; TSSOP-14 package only. | Lower bandwidth limits use in >50 kHz filtering or fast-settling ADC drivers. | Select when power budget allows higher IQ and bandwidth requirements are ≤5 MHz. |
| TLV9064IDR | Higher 10-MHz GBW and 0.53 mA IQ, but only 1.2 pA IB and no integrated EMI filter. | Lacks built-in RFI rejection - requires external filtering in automotive or industrial EMI-heavy environments. | Prefer where lowest quiescent current is critical and board space permits discrete EMI mitigation. |
Compared with MCP6294IDR, MCP6284T-E/ST trades bandwidth for slightly higher power, while TLV9064IDR offers marginally lower IQ but requires external EMI hardening - making MCP6294IDR optimal for noise-sensitive, wide-bandwidth, single-supply sensor interfaces demanding production-ready robustness.
Availability
MCP6294IDR is available at Aetrix Electronics and suitable for medical instrumentation, HVAC control systems, and battery-powered portable devices requiring stable component supply, long-term manufacturability, and guaranteed extended temperature performance.
Supply support for MCP6294IDR 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 company delivering analog and embedded processing solutions, with leadership in precision amplifiers, data converters, and power management ICs.
The MCP629x family was designed for general-purpose, low-power, rail-to-rail op amp applications demanding high accuracy, wide supply range, and robust EMC performance in cost-sensitive industrial and consumer systems.
FAQ
What is the maximum capacitive load the MCP6294IDR can drive without oscillation?
The MCP6294IDR maintains stability with up to 300 pF capacitive load due to its resistive open-loop output impedance and 55° phase margin at unity gain. For loads exceeding 100 pF, TI recommends adding a small series resistor (10–50 Ω) between the output and capacitive node to isolate the reactive component - a technique validated in Figure 20 and Figure 29 of the SBOS879D datasheet. This behavior is intrinsic to the MCP6294IDR's output stage architecture.
Does the MCP6294IDR support true rail-to-rail input at 2.4 V supply?
Yes - the MCP6294IDR guarantees rail-to-rail input common-mode range from (V−) −0.1 V to (V+) +0.1 V across its full 2.4 V to 5.5 V supply range, including at 2.4 V. This is achieved via complementary N- and P-channel input pairs, as detailed in Section 8.3.1 of the datasheet. At 2.4 V, the input accepts signals from −0.1 V to +2.5 V, enabling direct interface with grounded sensors and reference buffers.
How does the MCP6294IDR handle input overvoltage conditions?
The MCP6294IDR includes diode clamping on all input pins to the supply rails (per Absolute Maximum Ratings table), limiting input current to ≤10 mA if signals exceed (V−) −0.5 V or (V+) +0.5 V. Crucially, it exhibits no phase reversal during overdrive - the output remains monotonic and recovers in 0.2 µs (Section 8.3.3). This behavior is verified across −40°C to 125°C and makes MCP6294IDR suitable for fault-tolerant sensor interfaces.
Can the MCP6294IDR be used in single-supply photodiode TIA configurations?
Yes - the MCP6294IDR is widely deployed in single-supply transimpedance amplifiers. Its 1 pA input bias current minimizes error across high-value feedback resistors (e.g., 10–100 MΩ), and rail-to-rail output ensures full dynamic range into ADCs. TI's TIPD195 reference design specifically validates MCP6294IDR in 3.3 V photodiode amplifiers with 100 MΩ feedback and 10 pF compensation - confirming stability and noise performance.
What thermal performance can be expected from the MCP6294IDR in SOIC-14 package?
In SOIC-14 (D package), the MCP6294IDR has a junction-to-ambient thermal resistance (RθJA) of 106.9°C/W and junction-to-board (RθJB) of 63°C/W (Section 7.6). At full 4×0.6 mA = 2.4 mA quiescent current and 5.5 V supply, power dissipation is ~13.2 mW - resulting in <1.5°C junction rise above ambient on a standard 2-layer PCB. This enables reliable operation in sealed enclosures up to +125°C ambient.
MCP6294IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 6.5V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 600µA (x4 Channels)
- Current - Output / Channel:
- 25 mA
- Voltage - Supply Span (Min):
- 2.4 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MCP6294IDR FAQ
1.How can I place an order for MCP6294IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP6294IDR 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 MCP6294IDR reliable?
The price and inventory of MCP6294IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP6294IDR is usually 5 days.
3.What payment methods are accepted for MCP6294IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP6294IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP6294IDR?
MCP6294IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP6294IDR 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 MCP6294IDR?
For technical support, including MCP6294IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP6294IDR requirements.
6.How does Aetrix verify that MCP6294IDR is sourced from the original manufacturer or authorized distributors?
All MCP6294IDR 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 MCP6294IDR meets industry standards.
7.What is the process for return or replacement of MCP6294IDR?
All MCP6294IDR units undergo pre-shipment inspection (PSI). If there is an issue with MCP6294IDR, 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 MCP6294IDR part is unused and in its original packaging.
Return procedure for MCP6294IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP6294IDR Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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