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Analog Devices Inc./Maxim Integrated MAX474CPA+
- Part No.:
- MAX474CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX474CPA+.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,461
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Product details
Overview
MAX474CPA+ from Maxim Integrated is a dual, single-supply operational amplifier optimized for low-voltage portable systems. It delivers 10MHz unity-gain bandwidth, 15V/µs slew rate, rail-to-rail output swing (within ±50mV of rails), 2mA per amplifier supply current, and input voltage range extending to the negative rail - enabling precision signal conditioning in battery-powered instrumentation and servo-loop feedback paths.
For engineers reviewing the MAX474CPA+ datasheet, MAX474CPA+ pinout, MAX474CPA+ application, or MAX474CPA+ equivalent, this page provides verified technical context, package-specific pin mapping, real-world application constraints, and validated alternative options for legacy design support and obsolescence mitigation.
Technical Context
The MAX474CPA+ integrates two independent bipolar op amps in an 8-pin plastic DIP package, each featuring unity-gain stability, internal compensation, and rail-to-rail output stage capable of sourcing/sinking ≥5mA. Its input stage operates down to VEE (ground), supporting true single-supply operation from +2.7V to +5.25V without level-shifting circuitry.
Designed for high-speed, low-noise analog signal paths, it achieves 600Ω drive capability while maintaining 76dB CMRR and 80dB PSRR at DC, with phase margin of 58° into 10kΩ || 20pF. The device is not recommended for new designs due to discontinued wafer process, but remains supported for existing production with documented thermal derating (9.09mW/°C above +70°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +5.25V single supply - enables direct interface with 3V and 5V logic domains without charge pumps or dual supplies. |
| Unity-Gain Bandwidth | 10MHz (min) - supports stable closed-loop gain ≥1 up to audio and low-MHz signal frequencies. |
| Slew Rate | 15V/µs (min) - ensures ≤700ns settling to 0.1% for 1V step, critical for fast transient response in servo loops. |
| Output Swing | Rail-to-rail (±50mV) - maximizes dynamic range in 3V systems, delivering >2.9Vpp output into high-Z loads. |
| Input Common-Mode Range | Includes VEE (0V) - allows ground-referenced sensor inputs without biasing resistors or level shifters. |
| Supply Current per Amp | 2.0mA (typ) at +3V - balances speed and power for battery life-sensitive portable equipment. |
| Input Offset Voltage | ±2.0mV (max, 0°C to +70°C) - supports precision DC-coupled amplification without external trimming. |
Pinout & Package
MAX474CPA+ uses an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise orientation when viewed from top.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives external load; short-circuit protected; swings rail-to-rail. |
| 2 | INA− | Inverting input of Amplifier A - high-impedance node; bias current flows out (nA-level). |
| 3 | INA+ | Noninverting input of Amplifier A - accepts signals down to VEE (0V); matched to INA− for offset minimization. |
| 4 | VEE | Negative supply terminal - connected to ground in single-supply mode; substrate reference. |
| 5 | INB+ | Noninverting input of Amplifier B - electrically identical to INA+; supports dual-channel signal processing. |
| 6 | INB− | Inverting input of Amplifier B - matched to INB+; requires symmetric source impedance to minimize offset error. |
| 7 | OUTB | Amplifier B output - independent of OUTA; no crosstalk beyond specified 120dB channel separation. |
| 8 | VCC | Positive supply terminal - bypass with 0.1µF ceramic capacitor near pin for stability and noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full 0V to VCC range minus 50mV - preserves signal headroom in 3V systems where every millivolt counts. |
| Single-supply operation from +2.7V | Eliminates need for negative rail generation - reduces BOM count and PCB area in portable instruments. |
| 10MHz unity-gain bandwidth | Enables stable amplification of signals up to ~1MHz with minimal phase lag - suitable for anti-aliasing and reconstruction filters. |
| 15V/µs slew rate | Supports clean 1Vpp square waves up to ~2.4MHz - critical for pulse conditioning in discrete filters and timing circuits. |
| Input range includes VEE (0V) | Accepts ground-referenced transducer outputs directly - avoids DC-blocking capacitors and associated low-frequency distortion. |
Applications
| Portable Equipment | Battery-Powered Instruments |
|---|---|
Use Scenario: Signal amplification in handheld multimeters and portable oscilloscopes operating from 3V coin cells or Li-ion batteries. IC Role / Device Role / Timing Role: Dual-channel buffer and gain stage for analog front-end multiplexing and ADC driver functions. Use Value: Rail-to-rail output ensures maximum utilization of 12-bit ADC input range; 2mA per amp extends battery runtime beyond 100 hours. |
Use Scenario: Precision sensor signal conditioning in field-deployable gas analyzers and pH meters. IC Role / Device Role / Timing Role: Low-offset, low-drift amplifier for thermistor and electrochemical sensor interfaces requiring DC accuracy. Use Value: ±2.0mV max VOS and 76dB CMRR maintain sub-0.1% measurement linearity across 0°C to +70°C ambient range. |
| Signal Processing | Servo-Loops |
Use Scenario: Active filtering and tone generation in audio-enabled IoT edge nodes and voice-command peripherals. IC Role / Device Role / Timing Role: Dual op amp configured as Sallen-Key bandpass filter (e.g., 190kHz center frequency) and output buffer. Use Value: 10MHz GBW and 15V/µs SR enable Q=10 filter response with <5% passband ripple and minimal group delay distortion. |
Use Scenario: Position and velocity feedback amplification in closed-loop motor control for medical infusion pumps and lab automation stages. IC Role / Device Role / Timing Role: Error amplifier and integrator in analog PID controller topology driving PWM gate drivers. Use Value: Unity-gain stability and 58° phase margin ensure robust loop response without external compensation components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual, single-supply op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV358IDR | Lower 1MHz GBW, 1V/µs SR, wider supply range (2.7–5.5V), higher input bias current (1pA vs 150nA), no rail-to-rail input. | Acceptable for DC-coupled low-bandwidth sensor buffers but unsuitable for fast-settling servo loops or AC-coupled filters above 100kHz. | Select only if cost sensitivity outweighs speed and input-range requirements; verify layout for stability with 100pF+ loads. |
| TLV2462CDR | Higher 6.4MHz GBW, 1.6V/µs SR, rail-to-rail I/O, lower quiescent current (550µA/amp), but limited 2.7–6V supply range and reduced drive strength (10mA vs 5mA). | Valid for low-power portable gear needing rail-to-rail I/O and moderate bandwidth, but cannot replicate MAX474CPA+'s 15V/µs slew performance in large-signal transients. | Prefer for new designs targeting extended battery life and mid-bandwidth signal chains; avoid where fast settling or high-current drive is required. |
Compared with LMV358IDR and TLV2462CDR, MAX474CPA+ uniquely combines 10MHz bandwidth, 15V/µs slew rate, and rail-to-rail output in a legacy-qualified DIP package - making it irreplaceable for existing high-speed analog subsystems where timing fidelity and output drive are non-negotiable.
Availability
MAX474CPA+ is available at Aetrix Electronics and suitable for portable equipment, battery-powered instruments, and servo-loop applications requiring stable component supply under legacy production continuity programs.
Supply support for MAX474CPA+ 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, communications, and consumer applications.
The MAX473/MAX474/MAX475 family was engineered for low-voltage, high-speed signal conditioning in space- and power-constrained portable systems - prioritizing rail-to-rail operation, unity-gain stability, and minimal external component count.
FAQ
Is MAX474CPA+ still in production and available for new orders?
Yes, MAX474CPA+ remains available for order through Aetrix Electronics with verified stock and traceable sourcing. While Maxim has designated it "Not Recommended for New Designs" due to end-of-life wafer fabrication, it is actively supported for legacy program continuity, including full documentation, application notes, and technical assistance.
What is the maximum capacitive load the MAX474CPA+ can drive without instability?
The MAX474CPA+ maintains stable unity-gain operation with ≤20pF load capacitance when driving 10kΩ. With larger loads (e.g., 100pF), phase margin degrades; Figure 3 in the datasheet shows overshoot increases to ~10% at 390pF. For >100pF, use the isolation resistor method shown in Figure 4 to restore stability - MAX474CPA+ can reliably drive 1000pF using that configuration.
Can the input offset voltage of MAX474CPA+ be trimmed externally?
No. Unlike the single MAX473CPA+, the dual MAX474CPA+ does not provide offset null pins. Its input offset voltage is factory-trimmed to ±2.0mV (max) over 0°C to +70°C and cannot be adjusted in-circuit. For applications requiring tighter DC accuracy, consider post-amplifier calibration or selection of higher-grade variants like MAX474EPA+ (±2.0mV over −40°C to +85°C).
Does MAX474CPA+ support dual-supply operation?
Yes. MAX474CPA+ operates from dual supplies of ±1.35V to ±2.625V, as confirmed in the Electrical Characteristics table. In dual-mode, VEE connects to the negative rail (e.g., −2.5V) and VCC to the positive rail (e.g., +2.5V). Channel separation exceeds 120dB up to 300kHz with proper 0.1µF bypassing on both rails.
What is the thermal derating specification for MAX474CPA+ in plastic DIP package?
MAX474CPA+ in 8-pin plastic DIP has a continuous power dissipation limit of 727mW at TA = +70°C, with linear derating of 9.09mW/°C above +70°C. This corresponds to a thermal resistance θJA of ~110°C/W. Layout must ensure adequate airflow or heatsinking if ambient exceeds +70°C, especially in high-output-drive configurations.
MAX474CPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 17V/µs
- Gain Bandwidth Product:
- 12 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 80 nA
- Voltage - Input Offset:
- 700 µV
- Current - Supply:
- 2mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX474CPA+ FAQ
1.How can I place an order for MAX474CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX474CPA+ 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 MAX474CPA+ reliable?
The price and inventory of MAX474CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX474CPA+ is usually 5 days.
3.What payment methods are accepted for MAX474CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX474CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX474CPA+?
MAX474CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX474CPA+ 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 MAX474CPA+?
For technical support, including MAX474CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX474CPA+ requirements.
6.How does Aetrix verify that MAX474CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX474CPA+ 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 MAX474CPA+ meets industry standards.
7.What is the process for return or replacement of MAX474CPA+?
All MAX474CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX474CPA+, 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 MAX474CPA+ part is unused and in its original packaging.
Return procedure for MAX474CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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