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Analog Devices Inc./Maxim Integrated MAX448ACPD
- Part No.:
- MAX448ACPD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX448ACPD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:606
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Product details
Overview
MAX448ACPD from Maxim Integrated is a quad 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 MAX448ACPD datasheet, MAX448ACPD pinout, MAX448ACPD application, or MAX448ACPD equivalent, key selection criteria include quad-channel settling performance, output drive into capacitive loads, offset trim capability, and compatibility with ±4V to ±6V supply rails in video distribution and test equipment designs.
Technical Context
The MAX448ACPD implements four independent high-speed voltage-feedback op-amps in a single 14-pin plastic DIP package. Each amplifier features internally compensated stability for non-inverting gains ≥3 (50°–60° phase margin), short-circuit protection, and >90dB inter-amplifier crosstalk suppression.
Its AC performance is characterized by 4.8MHz full-power bandwidth at 6VPP, 12µVRMS input voltage noise, and 35nA input offset current - enabling precision signal conditioning while maintaining video-bandwidth fidelity across all four channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 100MHz - supports stable closed-loop operation up to ~33MHz at unity gain, suitable for video and pulse amplification. |
| Slew Rate | 90V/µs - enables clean 5VPP output swing at high frequencies without slew-induced distortion. |
| Settling Time | 150ns to ±0.1% - critical for accurate sampling in fast ADC/DAC buffer and waveform generation stages. |
| Input Offset Current | 35nA - low enough to minimize error in high-impedance sensor interfaces and precision gain stages. |
| Supply Voltage Range | ±4V to ±6V - allows operation from standard dual-rail lab supplies and accommodates headroom for 5VPP signals. |
| Output Drive | Drives 75Ω loads at 5VPP - directly interfaces with broadcast video standards and RF test fixtures without external buffers. |
| Common-Mode Rejection | 70dB typical - maintains accuracy in noisy industrial environments with ground differentials. |
Pinout & Package
MAX448ACPD is housed in a 14-lead plastic DIP package with 0.3-inch body width and standard through-hole footprint. Pin 1 is marked with a notch or dot; pin numbering follows counter-clockwise convention from top view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | Inverting Input (–IN A/B/C/D) | High-impedance differential input node per channel; accepts signals referenced to local ground or common-mode bias. |
| 2, 6, 10, 14 | Non-inverting Input (+IN A/B/C/D) | High-impedance differential input node per channel; used for unity-gain follower or non-inverting configurations. |
| 3, 7, 11, 12 | Output (OUT A/B/C/D) | Class-AB output stage capable of ±3.5V swing into 2kΩ and full 5VPP into 75Ω. |
| 4 | V– | Negative supply rail connection; must be decoupled with 0.1µF capacitor to ground near the pin. |
| 14 | V+ | Positive supply rail connection; requires local 0.1µF bypass capacitor for high-frequency stability. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel integration | Four matched high-speed amplifiers in one 14-pin DIP - reduces board space and inter-channel skew in multi-signal systems like video switchers. |
| Internally compensated | Stable for ACL ≥3 without external compensation - simplifies layout and eliminates tuning for gain ≥3 applications. |
| Trim-capable offset voltage | Pins 1 and 5 support external nulling resistor network (e.g., 10kΩ pot) - enables <5mV residual offset in precision DC-coupled paths. |
| High output current | Capable of driving 150Ω loads at full speed - avoids need for external current boosters in pulse amplifier and line-driver roles. |
| Low crosstalk | >90dB separation between adjacent amplifiers - preserves signal integrity in dense multi-channel analog acquisition systems. |
Applications
| Video Distribution | Test Equipment |
|---|---|
Use Scenario: Distributing composite video signals from one source to multiple monitors or recording devices with minimal degradation. IC Role / Device Role / Timing Role: Quad video line driver providing simultaneous buffered outputs with matched gain, phase, and settling behavior. Use Value: Maintains 5VPP amplitude into 75Ω loads and preserves rise/fall times under 7ns - essential for NTSC/PAL timing compliance. | Use Scenario: Generating calibrated step, pulse, and sine waveforms in automated test equipment (ATE) and bench instruments. IC Role / Device Role / Timing Role: Output buffer and gain stage in arbitrary waveform generator (AWG) signal path, ensuring fast settling and low distortion. Use Value: 150ns ±0.1% settling and 90V/µs slew rate enable sub-100ns edge fidelity at 5VPP, meeting Class B waveform generator specs. |
| Waveform Generators | Pulse Amplifiers |
Use Scenario: Building compact, multi-channel function generators for embedded calibration and stimulus-response testing. IC Role / Device Role / Timing Role: Four independent gain/level-shifting stages for simultaneous generation of sine, square, and triangle waveforms. Use Value: Matched AC characteristics across all channels ensure consistent amplitude and timing response - critical for multi-phase signal synthesis. | Use Scenario: Amplifying narrow pulses (e.g., laser diode triggers, time-of-flight sensors) with preserved edge integrity and minimal overshoot. IC Role / Device Role / Timing Role: High-speed pulse buffer with controlled rise time and load-driving capability. Use Value: 7ns small-signal rise/fall time and 4.8MHz full-power bandwidth allow faithful reproduction of 50ns–100ns pulses at 5VPP. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4395 | Successor part with improved PSRR (80dB), lower input bias current (1pA), and extended temperature range (–40°C to +85°C); same 14-pin SO/DIP footprint. | Designed for new designs requiring longer product lifecycle and higher precision; not drop-in compatible due to different internal compensation and bias network. | Select MAX4395 when upgrading legacy designs or starting new projects where long-term availability and enhanced DC specs are required. |
| LMH6644 | Pin-compatible 14-pin SOIC quad op-amp with 130MHz GBW, 160V/µs slew rate, but higher quiescent current (5.3mA/channel vs. 7.5mA total for MAX448ACPD). | Better suited for ultra-high-speed applications beyond 100MHz; lacks internal offset null pins and has reduced output drive into 75Ω. | Choose LMH6644 only if bandwidth >100MHz is mandatory and 75Ω drive is not required; verify layout compatibility for SOIC-only footprint. |
Compared with MAX448ACPD, MAX4395 offers superior long-term support and precision but requires circuit validation due to differing compensation behavior, while LMH6644 provides higher raw speed at the cost of power efficiency and video-line drive capability - making MAX448ACPD uniquely balanced for legacy video and test equipment where 75Ω drive and quad-channel matching are essential.
Availability
MAX448ACPD is available at Aetrix Electronics and suitable for video distribution systems, automated test equipment, waveform generators, and pulse amplifier modules requiring stable component supply and proven field reliability.
Supply support for MAX448ACPD 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, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX408/428/448 family was designed specifically for high-fidelity analog signal processing in video, instrumentation, and fast data acquisition - emphasizing speed, output drive, and multi-channel matching over ultra-low power or rail-to-rail operation.
FAQ
What is the operating temperature range for MAX448ACPD?
The MAX448ACPD is specified for commercial temperature operation from 0°C to +70°C. This range is confirmed in the Ordering Information table on page 11 of the datasheet, where "MAX448ACPD" is explicitly listed with "0°C to +70°C" under TEMP. RANGE. It is not rated for extended or industrial temperature ranges.
Does MAX448ACPD support single-supply operation?
No, MAX448ACPD is not designed for true single-supply operation. Its input common-mode range extends to within 1.5V of V+ and 0.5V of V−, and its output swing is asymmetric around ground - requiring dual ±4V to ±6V supplies for full functionality. Attempting single-supply use (e.g., 0V and +8V) will violate input/output voltage limits and cause clipping or instability.
Can MAX448ACPD drive 50Ω loads effectively?
MAX448ACPD is characterized for 75Ω video loads (5VPP) and 150Ω loads in electrical specs, but not 50Ω. Driving 50Ω would exceed its specified output current capability and likely cause excessive distortion, thermal stress, or slew limitation. For 50Ω applications, a dedicated line driver or buffer stage is recommended ahead of MAX448ACPD.
Is there an official replacement for MAX448ACPD recommended by Maxim?
Yes - Maxim explicitly lists MAX4395 as the recommended upgrade for new designs in the "Recommended Upgrades for New Designs" section of the product page. The datasheet states: "MAX448 → MAX4395", noting that MAX448ACPD was manufactured using a discontinued foundry process and is not recommended for new designs.
How is offset voltage adjusted on MAX448ACPD?
MAX448ACPD does not provide dedicated offset null pins per channel. Unlike the single MAX408 (which uses Pins 1 & 5), the quad MAX448ACPD omits balance terminals - as confirmed in the "Simplified Schematic" note on page 8: "For MAX428/448 omit balance pins." Offset adjustment requires external circuitry (e.g., DAC-based injection or servo loop) rather than on-chip trimming.
MAX448ACPD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 90V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 650 nA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 30mA (x4 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 6 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
MAX448ACPD FAQ
1.How can I place an order for MAX448ACPD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX448ACPD 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 MAX448ACPD reliable?
The price and inventory of MAX448ACPD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX448ACPD is usually 5 days.
3.What payment methods are accepted for MAX448ACPD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX448ACPD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX448ACPD?
MAX448ACPD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX448ACPD 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 MAX448ACPD?
For technical support, including MAX448ACPD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX448ACPD requirements.
6.How does Aetrix verify that MAX448ACPD is sourced from the original manufacturer or authorized distributors?
All MAX448ACPD 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 MAX448ACPD meets industry standards.
7.What is the process for return or replacement of MAX448ACPD?
All MAX448ACPD units undergo pre-shipment inspection (PSI). If there is an issue with MAX448ACPD, 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 MAX448ACPD part is unused and in its original packaging.
Return procedure for MAX448ACPD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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