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Analog Devices Inc./Maxim Integrated MAX448ACPD-2
- Part No.:
- MAX448ACPD-2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX448ACPD-2.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:518
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Product details
Overview
MAX448ACPD-2 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, ±0.1% settling in 150ns, and 90V/µs slew rate, with full-power bandwidth of 4.8MHz at 6Vp-p. Designed for driving 75Ω back-terminated video lines at 5Vp-p, it supports precision signal conditioning in test equipment and waveform generation.
For engineers reviewing the MAX448ACPD-2 datasheet, MAX448ACPD-2 pinout, MAX448ACPD-2 application, or MAX448ACPD-2 equivalent, key selection criteria include guaranteed ±0.1% settling time, quad-channel crosstalk >90dB, trimmable offset voltage, and operation from ±4V supplies - all validated across 0°C to +70°C commercial temperature range.
Technical Context
The MAX448ACPD-2 employs internally compensated architecture stable for non-inverting gains ≥3 (50°–60° phase margin), eliminating external compensation components. Its input stage features low 35nA offset current and trimmable offset voltage, enabling high-accuracy DC-coupled signal conditioning.
Each of its four independent amplifiers drives capacitive loads up to 50pF while maintaining stability, supported by short-circuit protection and wide input common-mode range (within 1.5V of V+ and 0.5V of V−). The device operates from ±4V to ±6V supplies and exhibits 12µVRMS input voltage noise over 10Hz–100kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 100MHz - enables stable unity-gain-stable operation only at ≥3× non-inverting gain; supports wideband analog filtering up to ~30MHz closed-loop. |
| Settling Time (±0.1%) | 150ns - ensures accurate sampling in 10-bit+ ADC driver stages with minimal acquisition error. |
| Slew Rate | 90V/µs - sustains 6Vp-p output at 4.8MHz full-power bandwidth without distortion. |
| Input Offset Current | 35nA - minimizes DC error in high-impedance sensor interfaces and transimpedance configurations. |
| Output Drive Capability | Drives 75Ω transmission lines at 5Vp-p - directly interfaces with standard video distribution infrastructure without external buffers. |
| Supply Voltage Range | ±4V to ±6V - compatible with legacy ±5V analog subsystems and allows headroom for rail-to-rail signal swing. |
| Crosstalk (Amp-to-Amp) | >90dB - prevents inter-channel interference in multi-channel data acquisition and video multiplexing. |
Pinout & Package
MAX448ACPD-2 is housed in a 14-pin plastic DIP package (0.300" width) with through-hole mounting compatibility and industry-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - capable of sourcing/sinking ≥10mA into 150Ω load at full speed. |
| 2 | -INA | Inverting input of Amplifier A - differential input resistance 3MΩ, common-mode range extends to within 0.5V of V−. |
| 3 | +INA | Non-inverting input of Amplifier A - common-mode input capacitance 3pF; matched to -INA for low-input-offset applications. |
| 4 | V− | Negative supply rail - shared across all four amplifiers; requires local 0.1µF bypass to ground. |
| 5 | V+ | Positive supply rail - shared across all four amplifiers; decoupling critical for high-frequency PSRR performance. |
| 6 | +INB | Non-inverting input of Amplifier B - electrically isolated from other channels; enables independent biasing per channel. |
| 7 | -INB | Inverting input of Amplifier B - identical AC/DC specs to -INA; supports dual-channel instrumentation topologies. |
| 8 | OUTB | Amplifier B output - pin-compatible with OUTA; maintains same slew and settling performance under identical load conditions. |
| 9 | OUTC | Amplifier C output - fully independent channel; no shared internal nodes with A/B sections. |
| 10 | -INC | Inverting input of Amplifier C - matches input bias current (650nA typ) and offset voltage drift (20µV/°C) of other channels. |
| 11 | +INC | Non-inverting input of Amplifier C - supports single-ended or differential input configurations with consistent CMRR ≥60dB. |
| 12 | OUTD | Amplifier D output - completes quad functionality; verified for simultaneous operation without thermal or supply coupling degradation. |
| 13 | -IND | Inverting input of Amplifier D - validated for use in high-density PCB layouts with >90dB inter-amplifier isolation. |
| 14 | +IND | Non-inverting input of Amplifier D - enables four independent gain stages on one IC, reducing component count in multi-signal systems. |
Key Features
| Feature | Design Value |
|---|---|
| Fully independent quad amplifiers | Guaranteed >90dB crosstalk isolation enables simultaneous processing of four video or test signals without mutual interference. |
| Internally compensated for ACL ≥3 | Eliminates need for external compensation networks; simplifies layout and reduces bill-of-materials in gain ≥3 configurations. |
| Trimmable input offset voltage | Supports precision nulling via external potentiometer (pins 1 & 5 not used on MAX448); achieves <5mV residual offset after calibration. |
| High output current drive | Delivers ±10mA into 150Ω while maintaining 150ns ±0.1% settling - suitable for driving coaxial cables and ADC input buffers. |
| Low input voltage noise | 12µVRMS (10Hz–100kHz) preserves SNR in low-level signal amplification stages such as photodiode preamps or strain gauge interfaces. |
Applications
| Video Distribution | Test Equipment Signal Conditioning |
|---|---|
Use Scenario: Distribution of composite video signals to multiple monitors or recording devices over 75Ω coaxial cable. IC Role / Device Role / Timing Role: Quad buffer amplifier providing gain, level-shifting, and impedance matching for four independent video paths. Use Value: Maintains 5Vp-p amplitude and <150ns settling across all channels, preserving sync pulse integrity and minimizing ghosting. |
Use Scenario: Amplifying and conditioning low-amplitude waveforms in automated test equipment (ATE) stimulus modules. IC Role / Device Role / Timing Role: High-fidelity signal path amplifier with fast settling and low noise for generating precise calibration references. Use Value: Enables sub-100ns transient response and <0.1% linearity error in 10-bit DAC output buffering, improving test repeatability. |
| Waveform Generation | Pulse Amplification |
Use Scenario: Generating clean, high-slew-rate square and sine waves in function generators with multi-channel output capability. IC Role / Device Role / Timing Role: Final-stage output driver delivering 6Vp-p signals into 50Ω or 75Ω loads with minimal overshoot. Use Value: Achieves 4.8MHz full-power bandwidth and 7ns rise/fall time, supporting waveform fidelity up to 10MHz fundamental frequency. |
Use Scenario: Amplifying narrow digital pulses (e.g., laser trigger, time-of-flight sensors) requiring fast edge preservation. IC Role / Device Role / Timing Role: Pulse shaping and gain stage ensuring minimal pulse width distortion and amplitude consistency. Use Value: Delivers 90V/µs slew rate and ±0.1% settling in 150ns, preserving sub-200ns pulse edges without rounding or ringing. |
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 |
|---|---|---|---|
| LMH6644MA/NOPB | Higher 130MHz GBW but lower 10V/µs slew rate; no internal offset trim; 2.7V–12.6V single-supply only. | Not suitable for ±5V legacy video systems; requires redesign of biasing and power rails. | Prefer when designing new single-supply systems needing wider bandwidth but tolerating slower slewing and fixed offset. |
| AD8044ARZ | 160MHz GBW, 160V/µs slew rate, but higher 1.8nA input bias current and no trimmable offset; specified for −40°C to +85°C. | Superior dynamic performance but less suited for precision DC-coupled signal conditioning due to higher IB and untrimmed VOS. | Choose for high-speed, AC-coupled applications like RF IF amplification where offset drift is irrelevant. |
Compared with LMH6644MA/NOPB and AD8044ARZ, the MAX448ACPD-2 offers unique value in legacy ±5V video and test systems requiring guaranteed ±0.1% settling, trimmable offset, and proven 75Ω drive capability - features not replicated in either alternative without circuit redesign.
Availability
MAX448ACPD-2 is available at Aetrix Electronics and suitable for video distribution, test equipment signal conditioning, waveform generation, and pulse amplification requiring stable component supply and long-term obsolescence management.
Supply support for MAX448ACPD-2 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 applications.
The MAX408/428/448 family was designed specifically for high-fidelity, high-speed analog signal processing in video, instrumentation, and data acquisition systems - emphasizing fast settling, robust output drive, and multi-channel isolation.
FAQ
What is the operating temperature range for MAX448ACPD-2?
The MAX448ACPD-2 is rated for commercial temperature operation from 0°C to +70°C. This range is confirmed in the Ordering Information table and applies to all electrical specifications unless otherwise noted. The 'AC' suffix explicitly denotes the 0°C to +70°C grade, and the 'PD' package code confirms the 14-pin plastic DIP variant. All AC-characterized parameters - including 150ns settling time and 100MHz gain bandwidth - are guaranteed across this full range.
Does MAX448ACPD-2 support single-supply operation?
The MAX448ACPD-2 is specified for dual-supply operation from ±4V to ±6V and does not support true single-supply use. Its input common-mode range extends to within 1.5V of V+ and 0.5V of V−, meaning with a +5V/0V rail it would only accept inputs from 0.5V to 3.5V - insufficient for rail-to-rail input. The datasheet provides no single-supply characterization data, and all AC performance metrics (e.g., 90V/µs slew rate, 150ns settling) assume symmetric ±5V supplies.
Is MAX448ACPD-2 pin-compatible with other MAX448 variants?
Yes, MAX448ACPD-2 is pin-compatible with all 14-pin MAX448 variants including MAX448CPD, MAX448ACSD, and MAX448CSD. The pin configuration diagram explicitly shows identical terminal assignments for all 14-pin DIP and SO packages. Differences are limited to temperature grade ('C' vs 'AC') and package type ('PD' = plastic DIP, 'SD' = small outline), with no functional or pinout variation between them.
What is the maximum capacitive load the MAX448ACPD-2 can drive stably?
The MAX448ACPD-2 is characterized for stable operation with up to 50pF capacitive load when driving into 2kΩ, as shown in Figures 13 and 14 of the datasheet. With heavier loads (e.g., 50pF + 2kΩ), peaking occurs near 88MHz, but remains bounded. For 150Ω loads, stability is maintained up to 5pF. Driving 75Ω video lines (typically ≤100pF total capacitance) requires external series termination or careful layout - the device itself is not unconditionally stable into arbitrary capacitance.
Why is MAX448ACPD-2 marked "Not Recommended for New Designs"?
MAX448ACPD-2 is marked "Not Recommended for New Designs" because it was manufactured using a wafer process that Maxim no longer supports. While the datasheet remains valid for existing designs and the part is still available through authorized distributors and Aetrix Electronics, Maxim advises new projects to evaluate replacements like the MAX4426 or industry alternatives. This status reflects manufacturing discontinuance, not functional obsolescence - all published specifications remain guaranteed for units in stock.
MAX448ACPD-2 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-2 FAQ
1.How can I place an order for MAX448ACPD-2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX448ACPD-2 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-2 reliable?
The price and inventory of MAX448ACPD-2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX448ACPD-2 is usually 5 days.
3.What payment methods are accepted for MAX448ACPD-2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX448ACPD-2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX448ACPD-2?
MAX448ACPD-2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX448ACPD-2 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-2?
For technical support, including MAX448ACPD-2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX448ACPD-2 requirements.
6.How does Aetrix verify that MAX448ACPD-2 is sourced from the original manufacturer or authorized distributors?
All MAX448ACPD-2 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-2 meets industry standards.
7.What is the process for return or replacement of MAX448ACPD-2?
All MAX448ACPD-2 units undergo pre-shipment inspection (PSI). If there is an issue with MAX448ACPD-2, 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-2 part is unused and in its original packaging.
Return procedure for MAX448ACPD-2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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