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Analog Devices Inc./Maxim Integrated MAX448ACSD
- Part No.:
- MAX448ACSD
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX448ACSD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:370
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Product details
Overview
MAX448ACSD 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 MAX448ACSD datasheet, MAX448ACSD pinout, MAX448ACSD application, or MAX448ACSD equivalent, key selection criteria include quad-channel settling performance, 75Ω line driving capability, trimmable offset voltage, and compatibility with ±4V to ±6V supply rails in high-fidelity analog signal paths.
Technical Context
The MAX448ACSD employs internally compensated architecture stable for non-inverting gains ≥3 (50°–60° phase margin), eliminating external compensation components. Its open-loop voltage gain is 10,000 V/V (80dB), and it maintains >90dB inter-amplifier crosstalk across all four channels.
Designed for demanding analog signal conditioning, it features low input offset current (35nA typ), trimmable offset voltage via external resistors, and short-circuit protected outputs capable of indefinite current limiting. Input bias current remains below 1700nA over 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 unity gain with margin |
| Slew Rate | 90V/µs - supports full-scale 6VPP output transitions in under 67ns |
| Settling Time | 150ns to ±0.1% - ensures accurate sampling in 12-bit+ ADC driver applications |
| Output Drive | 75Ω back-terminated line at 5VPP - meets broadcast video impedance and amplitude standards |
| Supply Voltage Range | ±4V to ±6V - compatible with legacy ±5V systems and low-voltage industrial rails |
| Input Offset Current | 35nA (typ) - minimizes error in high-impedance sensor interface circuits |
| Common-Mode Rejection | 70dB (typ) - suppresses noise coupling in differential signal conditioning |
Pinout & Package
MAX448ACSD is housed in a 14-lead SO (Small Outline) package with standard JEDEC MS-012AC footprint (5.3mm width, 1.27mm pitch). Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | Inverting Input (–IN) | High-impedance differential input per channel; accepts signals within 0.5V of V− |
| 2, 6, 10, 14 | Non-inverting Input (+IN) | High-impedance differential input per channel; accepts signals within 1.5V of V+ |
| 3, 7, 11, 12 | Output (OUT) | Class-AB output stage capable of ±3.5V swing into 2kΩ and sustained 75Ω drive |
| 4 | V− | Negative supply rail connection; must be decoupled with 0.1µF to ground |
| 14 | V+ | Positive supply rail connection; must be decoupled with 0.1µF to ground |
Key Features
| Feature | Design Value |
|---|---|
| Fast settling time | 150ns to ±0.1% - reduces aperture uncertainty in high-speed data acquisition front-ends |
| Internally compensated | Stable for ACL ≥3 without external components - simplifies PCB layout and reduces BOM count |
| High output current | Drives 75Ω loads at 5VPP - eliminates need for external line drivers in video distribution |
| Trimmable offset voltage | Null pins available on MAX408 only; MAX448ACSD relies on internal trimming - ensures baseline accuracy without user adjustment |
| Low crosstalk | >90dB separation between channels - preserves signal integrity in multi-channel instrumentation |
Applications
| Video Amplifiers | Test Equipment |
|---|---|
Use Scenario: Amplifying composite video signals in CCTV distribution hubs with minimal group delay distortion. IC Role / Device Role / Timing Role: Quad-channel buffer and level shifter driving multiple 75Ω coaxial outputs simultaneously. Use Value: 100MHz bandwidth and 150ns settling ensure sub-pixel timing fidelity across NTSC/PAL/HD-SDI baseband signals. | Use Scenario: Signal conditioning in automated test equipment (ATE) for DAC/ADC characterization. IC Role / Device Role / Timing Role: High-fidelity output driver for precision waveform generation and feedback path in closed-loop calibration. Use Value: 90V/µs slew rate and ±0.1% settling enable accurate reproduction of fast-rising test pulses up to 10MHz. |
| Waveform Generators | Pulse Amplifiers |
Use Scenario: Output stage in arbitrary waveform generators requiring clean, low-distortion sine/square/triangle outputs. IC Role / Device Role / Timing Role: Final-stage amplifier with adjustable gain and DC offset control before output connectors. Use Value: Full-power bandwidth of 4.8MHz at 6VPP supports undistorted 5MHz sine waves at full scale. | Use Scenario: Pulse shaping and amplification in laser diode drivers and time-of-flight sensor interfaces. IC Role / Device Role / Timing Role: Fast transient amplifier delivering controlled 5VPP, <100ns rise/fall pulses into capacitive loads. Use Value: 7ns small-signal rise/fall time and 150ns settling support precise pulse edge placement in nanosecond timing systems. |
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 with improved PSRR (80dB vs 66dB), lower input bias current (1pA vs 1700nA), and extended temp range (–40°C to +85°C) | Supports automotive and industrial environments where MAX448ACSD's 0°C to +70°C range is insufficient | Preferred for new designs requiring long-term supply continuity and enhanced noise immunity |
| LMH6644MA/NOPB | Lower power (1.8mA/ch vs 10mA/ch), wider supply range (2.7V to 12.6V), but reduced GBW (130MHz vs 100MHz) and no guaranteed 75Ω drive | Better suited for battery-powered portable test gear than fixed-line video infrastructure | Consider when supply flexibility and quiescent current outweigh legacy video line-drive requirements |
Compared with MAX448ACSD, MAX4395 offers superior long-term availability and specification headroom, while LMH6644MA/NOPB trades legacy video compliance for modern low-power operation-neither is pin-compatible, requiring PCB redesign.
Availability
MAX448ACSD is available at Aetrix Electronics and suitable for video distribution systems, test equipment signal chains, and pulse amplifier modules requiring stable component supply and legacy design support.
Supply support for MAX448ACSD 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 computing applications.
The MAX408/428/448 family was designed specifically for high-fidelity, high-speed analog signal conditioning in video, instrumentation, and data conversion systems where speed, drive strength, and settling accuracy are critical.
FAQ
What is the operating temperature range for MAX448ACSD?
The MAX448ACSD 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 and applies to all AC-grade variants including MAX448ACSD. It is not rated for extended or industrial temperature ranges.
Is MAX448ACSD pin-compatible with other members of the MAX408/428/448 family?
Yes, MAX448ACSD shares identical pinout with all MAX448 variants (e.g., MAX448CPD, MAX448CSD) in the 14-pin DIP and SO packages. However, it is not pin-compatible with MAX408 (8-pin) or MAX428 (8-pin) due to differing channel count and pin allocation. The MAX448ACSD pin configuration is explicitly shown in the "Pin Configurations" diagram on page 2.
Does MAX448ACSD support single-supply operation?
No, MAX448ACSD is not characterized or guaranteed for true single-supply operation. Its input common-mode range extends to within 0.5V of V− and 1.5V of V+, and output swing is asymmetric around ground. The datasheet specifies operation only with dual supplies (±4V to ±6V); no DC biasing scheme or rail-to-rail behavior is documented for single-ended use.
What is the maximum load capacitance MAX448ACSD can drive stably?
MAX448ACSD is characterized for stable operation with up to 50pF capacitive load when driving 2kΩ resistive loads, as shown in Figures 13 and 14 of the datasheet. Driving larger capacitive loads (e.g., >100pF) or low-impedance loads (<150Ω) without series isolation resistance may cause peaking or oscillation due to loss of gain margin above 70MHz.
Why is MAX448ACSD marked 'Not Recommended for New Designs'?
MAX448ACSD is marked 'Not Recommended for New Designs' because it was manufactured using a wafer process that Maxim no longer supports. The datasheet remains valid for existing designs, but Maxim recommends MAX4395 as a drop-in functional replacement with improved specifications, extended temperature range, and active production status.
MAX448ACSD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MAX448ACSD FAQ
1.How can I place an order for MAX448ACSD through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX448ACSD 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 MAX448ACSD reliable?
The price and inventory of MAX448ACSD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX448ACSD is usually 5 days.
3.What payment methods are accepted for MAX448ACSD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX448ACSD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX448ACSD?
MAX448ACSD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX448ACSD 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 MAX448ACSD?
For technical support, including MAX448ACSD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX448ACSD requirements.
6.How does Aetrix verify that MAX448ACSD is sourced from the original manufacturer or authorized distributors?
All MAX448ACSD 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 MAX448ACSD meets industry standards.
7.What is the process for return or replacement of MAX448ACSD?
All MAX448ACSD units undergo pre-shipment inspection (PSI). If there is an issue with MAX448ACSD, 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 MAX448ACSD part is unused and in its original packaging.
Return procedure for MAX448ACSD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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