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Analog Devices Inc./Maxim Integrated MAX408CPA
- Part No.:
- MAX408CPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX408CPA.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:7,998
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Product details
Overview
MAX408CPA from Maxim Integrated is a single high-speed operational amplifier optimized for video-range signal amplification and fast data conversion systems. It delivers 100MHz gain bandwidth, 90V/µs slew rate, ±0.1% settling in 150ns, and drives 75Ω back-terminated transmission lines at 5VPP. It operates from ±4V supplies and supports input common-mode range within 1.5V of V+ and 0.5V of V−.
For engineers reviewing the MAX408CPA datasheet, MAX408CPA pinout, MAX408CPA application, or MAX408CPA equivalent, key selection considerations include its minimum stable gain of 3, internal compensation, ±3.5V output swing into 2kΩ, 35nA offset current, and suitability for pulse, video, and test equipment signal paths requiring fast settling and high capacitive load drive.
Technical Context
The MAX408CPA uses internally compensated architecture with 50°–60° phase margin for non-inverting gains ≥3, eliminating external compensation components. Its open-loop voltage gain is 10,000 V/V (80dB), and it maintains stability with up to 50pF capacitive load at unity-gain-stable-equivalent conditions.
It features trimmable input offset voltage via dedicated balance pins (pins 1 and 5), low 12µVRMS input voltage noise, and robust short-circuit protection. Input bias current is 650nA (typ) at +25°C, rising to 1100nA across 0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 100MHz - enables stable closed-loop operation up to ~33MHz at gain=3 |
| Slew Rate | 90V/µs - supports full-scale 6VPP output transitions in ≤67ns |
| Settling Time | 150ns to ±0.1% - critical for 12-bit DAC buffer and fast ADC driver stages |
| Input Offset Current | 35nA (max) - minimizes error in high-impedance sensor interfaces |
| Output Voltage Swing | ±3.5V into 2kΩ - delivers 7VPP signal headroom for video line driving |
| Supply Voltage Range | ±4V to ±6V - compatible with legacy ±5V analog rails and low-voltage industrial systems |
| Common-Mode Input Range | Within 1.5V of V+, 0.5V of V− - supports rail-to-rail input signal capture near supply limits |
Pinout & Package
MAX408CPA is housed in an 8-pin plastic DIP package (0.300" wide), RoHS-compliant and rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | BALANCE | Offset null adjustment terminal - connects to potentiometer wiper for trimming VOS |
| 2 | IN− | Inverting input - differential node for feedback network connection |
| 3 | IN+ | Non-inverting input - accepts high-impedance signal source with 4MΩ common-mode resistance |
| 4 | V− | Negative supply rail - must be decoupled with 0.1µF capacitor to ground |
| 5 | BALANCE | Offset null adjustment terminal - connects to potentiometer end for VOS trimming |
| 6 | OUT | Amplifier output - capable of sourcing/sinking >10mA and driving 150Ω loads directly |
| 7 | V+ | Positive supply rail - requires local 0.1µF bypass capacitor to minimize supply-induced distortion |
| 8 | NC | No connect - electrically isolated; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated for ACL ≥ 3 | Eliminates external compensation components and simplifies layout for gain ≥3 configurations |
| Trimmable input offset voltage | Enables <±2mV system-level offset correction using external 10kΩ potentiometer |
| 75Ω back-terminated line drive | Directly interfaces with standard video distribution infrastructure without external series resistors |
| Short-circuit protected output | Withstands indefinite output-to-rail shorts without latch-up or permanent damage |
| Low 35nA input offset current | Maintains accuracy in transimpedance and photodiode amplifier topologies with >100kΩ feedback |
Applications
| Video Amplifiers | Test Equipment |
|---|---|
Use Scenario: Amplifying composite video signals in broadcast-grade distribution amplifiers. IC Role / Device Role / Timing Role: Single-ended video buffer with 5VPP drive capability into 75Ω coaxial cable. Use Value: Maintains signal integrity with <0.1% settling error and minimal group delay variation across 4.2MHz NTSC bandwidth. | Use Scenario: Output stage of arbitrary waveform generators producing fast-rise pulses. IC Role / Device Role / Timing Role: High-slew-rate output driver for precision pulse shaping and edge fidelity. Use Value: Delivers 90V/µs slew rate and 150ns settling to preserve sub-100ns pulse edges without overshoot or ringing. |
| Waveform Generators | Pulse Amplifiers |
Use Scenario: Active filter and gain stage in programmable sine/triangle/square wave synthesizers. IC Role / Device Role / Timing Role: Low-distortion gain block with 100MHz GBW supporting harmonic-rich waveform generation. Use Value: Achieves <−60dB THD at 1MHz due to high open-loop gain (10k V/V) and low input noise (12µVRMS). | Use Scenario: Laser diode or RF switch driver requiring fast, high-current transient response. IC Role / Device Role / Timing Role: High-output-current pulse amplifier with ±10mA drive capability. Use Value: Drives 150Ω loads at full 6VPP swing while maintaining 150ns settling - essential for time-of-flight and LIDAR timing accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4390 | Pin-compatible upgrade with 220MHz GBW, 120V/µs slew rate, and improved PSRR (80dB) | Supports higher-frequency signal chains (e.g., HD video, 100MHz+ test instruments) | Preferred for new designs requiring extended bandwidth and lower noise floor |
| LMH6629MA/NOPB | Higher 1.5GHz GBW, 1200V/µs slew rate, but requires external compensation and has no offset trim pins | Used in ultra-high-speed ADC drivers where MAX408CPA's internal compensation is unnecessary | Choose when design flexibility outweighs ease-of-use; not drop-in compatible due to different pinout and compensation scheme |
Compared with MAX408CPA, MAX4390 offers direct replacement capability with enhanced speed and noise performance, while LMH6629MA/NOPB provides significantly higher bandwidth at the cost of added design complexity and loss of offset trimming functionality.
Availability
MAX408CPA is available at Aetrix Electronics and suitable for video distribution, test instrumentation, and pulse amplifier applications requiring stable component supply and legacy design continuity.
Supply support for MAX408CPA 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer systems.
The MAX408 family belongs to Maxim's high-speed op amp product line, designed specifically for video, pulse, and fast data acquisition applications demanding wide bandwidth, rapid settling, and robust output drive.
FAQ
What is the operating temperature range for MAX408CPA?
The MAX408CPA is specified for commercial temperature operation from 0°C to +70°C. This range is confirmed in the Ordering Information table and applies to all C-grade variants including MAX408CPA. It is not rated for extended or industrial temperature ranges.
Does MAX408CPA require external compensation components?
No, MAX408CPA is internally compensated and stable for non-inverting closed-loop gains of 3 or greater (i.e., ACL ≥ 3). The datasheet specifies 50°–60° phase margin under these conditions with up to 50pF capacitive load, eliminating need for external compensation networks.
Can MAX408CPA drive a 75Ω video load directly?
Yes, MAX408CPA is explicitly characterized to drive back-terminated 75Ω transmission lines with 5VPP output amplitude. Its high output current capability and specified settling behavior ensure compliance with video signal integrity requirements without additional series termination.
What is the purpose of pins 1 and 5 on MAX408CPA?
Pins 1 and 5 are BALANCE terminals used for input offset voltage nulling. They connect to a 10kΩ potentiometer (as shown in Figure 2 of the datasheet) to adjust VOS over a typical range of ±15mV. These pins are not part of the signal path and do not affect AC performance.
Is MAX408CPA recommended for new designs?
No, MAX408CPA is Not Recommended for New Designs. Maxim states it was manufactured using a discontinued wafer process and advises using MAX4390 as a pin-compatible replacement. The datasheet remains available only for existing users maintaining legacy systems.
MAX408CPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 90V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 650 nA
- Voltage - Input Offset:
- 5 mV
- Current - Supply:
- 7mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 8 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX408CPA FAQ
1.How can I place an order for MAX408CPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX408CPA 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 MAX408CPA reliable?
The price and inventory of MAX408CPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX408CPA is usually 5 days.
3.What payment methods are accepted for MAX408CPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX408CPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX408CPA?
MAX408CPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX408CPA 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 MAX408CPA?
For technical support, including MAX408CPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX408CPA requirements.
6.How does Aetrix verify that MAX408CPA is sourced from the original manufacturer or authorized distributors?
All MAX408CPA 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 MAX408CPA meets industry standards.
7.What is the process for return or replacement of MAX408CPA?
All MAX408CPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX408CPA, 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 MAX408CPA part is unused and in its original packaging.
Return procedure for MAX408CPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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