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Analog Devices Inc./Maxim Integrated MAX473CPA+
- Part No.:
- MAX473CPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX473CPA+.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,275
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Product details
Overview
The MAX473CPA+ from Maxim Integrated is a single-channel, rail-to-rail output operational amplifier optimized for single-supply operation from 2.7V to 5.25V. It delivers 10MHz unity-gain bandwidth, 15V/µs slew rate, 600Ω drive capability, and rail-to-rail output swing within ±50mV of both supply rails while consuming only 2mA per amplifier - making it suitable for portable instrumentation and low-voltage signal conditioning.
For engineers reviewing the MAX473CPA+ datasheet, MAX473CPA+ pinout, MAX473CPA+ application, or MAX473CPA+ equivalent, key selection criteria include guaranteed 10MHz bandwidth at 3V supply, input range extending to the negative rail, short-circuit protected outputs, and compatibility with DIP-8 packaging for through-hole prototyping and legacy industrial designs.
Technical Context
The MAX473CPA+ employs a bipolar input stage with output transistors configured for rail-to-rail swing, enabling full dynamic range utilization in single-supply systems. Its unity-gain stability is verified with 10kΩ || 20pF loads, and phase margin remains at 58°–63° across temperature and supply voltage (3V–5V).
It features input bias currents flowing *out* of both inputs (0–150nA typ), requiring matched source impedances to minimize offset error. The device lacks external offset null capability in dual/quad variants but retains pins 1 and 8 for trimming on the MAX473CPA+ DIP-8 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.25V single supply - enables direct interface with 3.3V and 5V logic without level shifting |
| Unity-Gain Bandwidth | 10MHz (guaranteed) - supports stable amplification of signals up to ~1MHz at gain ≥10 |
| Slew Rate | 15V/µs min - ensures ≤700ns settling to 0.1% for 1V step, critical for pulse and fast transient handling |
| Output Drive | 600Ω load capability - sustains rail-to-rail swing under moderate current demand without clipping |
| Rail-to-Rail Output | Swings to within 50mV of VEE and VCC - maximizes usable output voltage range in low-voltage systems |
| Input Common-Mode Range | Includes VEE (0V) - allows sensing near ground in single-supply sensor front-ends |
| Quiescent Current | 2mA per amplifier - balances speed and power for battery-powered portable equipment |
Pinout & Package
MAX473CPA+ is supplied in an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and standard op-amp pinout compatible with industry layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Null (IN–) | Connects to one end of 2kΩ potentiometer for manual input offset trimming; referenced to VEE |
| 2 | Inverting Input (IN–) | Differential input node; bias current flows *out*, requiring impedance matching to non-inverting input |
| 3 | Noninverting Input (IN+) | Differential input node; bias current flows *out*, must match source impedance at Pin 2 for minimal offset |
| 4 | VEE (Ground) | Negative supply terminal; substrate tied to this pin; serves as reference for offset null circuit |
| 5 | No Connect (N.C.) | Not internally bonded - leave unconnected; no electrical function |
| 6 | Output (OUT) | Amplified single-ended output; short-circuit protected; drives 600Ω load rail-to-rail |
| 7 | VCC (+) | Positive supply terminal; bypass with 0.1µF ceramic capacitor close to pin for stability |
| 8 | Offset Null (IN+) | Connects to other end of 2kΩ potentiometer; wiper ties to VEE for adjustable nulling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range from VEE + 50mV to VCC – 50mV, preserving SNR in 3V systems |
| Input range includes negative rail | Accepts common-mode signals down to VEE (0V), enabling ground-referenced sensor interfacing |
| 15V/µs minimum slew rate | Supports clean amplification of 100kHz full-scale sine waves without slew-induced distortion |
| Short-circuit protected output | Withstands indefinite output-to-ground shorts without damage or latch-up |
| Unity-gain stable | Operates reliably in buffer configuration with 10kΩ || 20pF loads; phase margin ≥58° |
Applications
| Battery-Powered Instrumentation | Portable Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter front-end amplifying mV-level thermocouple or RTD signals using 3.3V supply. IC Role / Device Role / Timing Role: Single-supply op amp providing precision gain and rail-to-rail buffering before ADC sampling. Use Value: 2mA quiescent current extends battery life; rail-to-rail output ensures full ADC input range utilization. | Use Scenario: Audio line driver in portable medical monitor converting analog ECG signals to buffered differential pair. IC Role / Device Role / Timing Role: Low-noise, fast-settling amplifier driving anti-aliasing filter and SAR ADC input. Use Value: 10MHz bandwidth preserves diagnostic waveform fidelity; 15V/µs slew rate prevents distortion on QRS complexes. |
| Discrete Active Filters | Servo Loop Compensation |
Use Scenario: 2nd-order bandpass filter (fo = 190kHz, Q = 10) built with discrete resistors/capacitors around MAX473CPA+. IC Role / Device Role / Timing Role: Unity-gain stable op amp implementing active filter topology with precise pole placement. Use Value: Guaranteed 10MHz GBW ensures accurate center frequency and Q; low input bias minimizes resistor-induced offset drift. | Use Scenario: Type-II compensation network in DC-DC converter feedback loop operating from 3.3V input. IC Role / Device Role / Timing Role: High-speed error amplifier stabilizing voltage regulation with fast transient response. Use Value: 15V/µs slew rate enables sub-microsecond correction of load-step disturbances; rail-to-rail output maximizes control range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-supply op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321IDBVR | CMOS input (pA bias), lower supply current (60µA), 1MHz GBW - trades speed for ultra-low power | Not suitable for >100kHz signal paths or high-slew demands; better for always-on sensor nodes | Select when power budget <100µA dominates over bandwidth requirements |
| TLV2461CDR | Bipolar input (nA bias), 6.4MHz GBW, 1.6V/µs slew, rail-to-rail I/O - slower but more robust against ESD | Lacks guaranteed 10MHz performance; preferred where cost and qualification stability outweigh speed | Select for automotive-qualified designs needing AEC-Q200 compliance and proven field reliability |
Compared with LMV321IDBVR and TLV2461CDR, the MAX473CPA+ uniquely delivers 10MHz bandwidth and 15V/µs slew rate in a legacy DIP-8 package - making it irreplaceable for existing high-speed, single-supply analog circuits where board layout cannot be modified.
Availability
MAX473CPA+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable signal conditioning, discrete active filters, and servo loop compensation requiring stable component supply and long-term obsolescence management.
Supply support for MAX473CPA+ 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The MAX473/MAX474/MAX475 family was designed to address the need for fast, rail-to-rail, single-supply op amps in portable and low-voltage measurement systems - prioritizing bandwidth, output drive, and supply flexibility over ultra-low power.
FAQ
Is MAX473CPA+ still recommended for new designs?
No. The MAX473CPA+ is marked "Not Recommended for New Designs" because it was manufactured using a discontinued wafer process. Maxim does not plan further production. However, Aetrix Electronics maintains inventory for legacy system repair and continuity support. For new designs, consult Maxim's technical support for approved replacements like the MAX44260 or industry alternatives.
What is the operating temperature range of MAX473CPA+?
The MAX473CPA+ is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range is specified for the plastic DIP package variant and aligns with its intended use in indoor portable equipment and benchtop instruments where thermal extremes are avoided.
Does MAX473CPA+ support dual-supply operation?
Yes. Although optimized for single-supply use, the MAX473CPA+ operates from dual supplies of ±1.35V to ±2.625V. When used in dual mode, VEE connects to the negative rail (e.g., –2.5V) and VCC to the positive rail (e.g., +2.5V); input common-mode range and output swing scale accordingly, maintaining rail-to-rail functionality relative to each supply.
Can the input offset voltage of MAX473CPA+ be trimmed?
Yes. Unlike the MAX474 and MAX475 variants, the MAX473CPA+ provides dedicated offset null pins (1 and 8). A 2kΩ potentiometer connected between these pins and VEE (Pin 4) allows manual adjustment of input offset voltage to <1mV - essential for precision DC-coupled measurement paths.
What package type is used by MAX473CPA+?
The MAX473CPA+ uses an 8-pin plastic DIP (dual in-line package) with 0.3-inch lead spacing. This through-hole package supports breadboard prototyping, socket-based test fixtures, and legacy PCB assemblies - distinguishing it from surface-mount variants like MAX473CSA (SO-8) or MAX473CUA (µMAX-8).
MAX473CPA+ 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:
- 1
- 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
- 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
MAX473CPA+ FAQ
1.How can I place an order for MAX473CPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX473CPA+ 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 MAX473CPA+ reliable?
The price and inventory of MAX473CPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX473CPA+ is usually 5 days.
3.What payment methods are accepted for MAX473CPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX473CPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX473CPA+?
MAX473CPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX473CPA+ 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 MAX473CPA+?
For technical support, including MAX473CPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX473CPA+ requirements.
6.How does Aetrix verify that MAX473CPA+ is sourced from the original manufacturer or authorized distributors?
All MAX473CPA+ 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 MAX473CPA+ meets industry standards.
7.What is the process for return or replacement of MAX473CPA+?
All MAX473CPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX473CPA+, 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 MAX473CPA+ part is unused and in its original packaging.
Return procedure for MAX473CPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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