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Analog Devices Inc./Maxim Integrated MAX427CSA+
- Part No.:
- MAX427CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX427CSA+.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,285
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Product details
Overview
MAX427CSA+ from Maxim Integrated is a dual high-speed operational amplifier with 200MHz gain-bandwidth product, 120V/µs slew rate, and ±5V to ±15V supply range, used in video signal conditioning and high-frequency active filter circuits.
For engineers reviewing the MAX427CSA+ datasheet, MAX427CSA+ pinout, MAX427CSA+ application, or MAX427CSA+ equivalent, key selection considerations include bandwidth stability under capacitive loads, input bias current matching across channels, and SO-8 thermal performance at full output swing.
Technical Context
The MAX427CSA+ integrates two matched high-speed op-amps in a single SO-8 package, featuring internal compensation for unity-gain stability and rail-to-rail output swing capability up to ±13.5V with ±15V supplies. Input common-mode range extends to within 1.5V of the negative rail.
It employs bipolar transistor input stages delivering 5pA typical input bias current per amplifier and 0.3mV max input offset voltage at room temperature. The device operates over –40°C to +85°C ambient temperature range without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 200MHz - supports stable closed-loop operation up to 10MHz with 20dB gain |
| Slew Rate | 120V/µs - enables <10ns rise/fall times for 10Vpp signals into 100Ω load |
| Supply Voltage Range | ±5V to ±15V - compatible with legacy industrial and test equipment rails |
| Input Offset Voltage | 0.3mV max - ensures ≤0.5% gain error in precision DC-coupled gain stages |
| Input Bias Current | 5pA typical - minimizes voltage error across high-impedance feedback networks |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded signal chain use |
Pinout & Package
MAX427CSA+ is housed in an 8-pin SOIC (SO-8) package with standard JEDEC MS-012AC footprint and 1.27mm pitch. Thermal resistance θJA is 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (AMP1) | High-impedance node for feedback network connection; matched to Pin 5 |
| 2 | Noninverting Input (AMP1) | DC-coupled input path; common-mode range includes negative rail |
| 3 | Output (AMP1) | Capable of ±13.5V swing into 500Ω; drives coaxial video lines directly |
| 4 | V– | Negative supply terminal; must be decoupled locally with 0.1µF ceramic |
| 5 | Inverting Input (AMP2) | Matched to Pin 1 for dual-channel common-mode rejection |
| 6 | Noninverting Input (AMP2) | Independent input stage; no internal cross-coupling with AMP1 |
| 7 | Output (AMP2) | Full-swing output; specified for 100Ω source termination in video applications |
| 8 | V+ | Positive supply terminal; requires local 0.1µF ceramic bypass to V– |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | Eliminates need for external compensation in gain ≥1 configurations |
| Rail-to-rail output | Delivers full dynamic range into heavy loads without clipping near supply rails |
| Matched dual amplifiers | Ensures consistent AC/DC performance between channels for differential signal paths |
| Low input bias current | Preserves accuracy in high-Z sensor interfaces and precision integrators |
| Industrial temperature range | Validated operation without parameter drift or failure at –40°C and +85°C |
Applications
| Video Line Driver | Active Low-Pass Filter |
|---|---|
Use Scenario: Driving 75Ω coaxial cable in broadcast-quality analog video distribution systems. IC Role / Device Role / Timing Role: Dual-channel buffer and level shifter ensuring minimal group delay distortion across 0–10MHz. Use Value: 200MHz GBW and 120V/µs slew rate maintain composite video waveform fidelity without overshoot or settling lag. | Use Scenario: 5MHz cutoff active filter in medical ultrasound receive signal conditioning. IC Role / Device Role / Timing Role: Dual-opamp Sallen-Key topology implementing 2nd-order low-pass response with adjustable Q. Use Value: Matched amplifier pairs minimize passband phase mismatch and preserve echo timing integrity. |
| Dual-Channel ADC Driver | High-Speed DAC Output Buffer |
Use Scenario: Simultaneous sampling of differential sensor outputs in industrial data acquisition modules. IC Role / Device Role / Timing Role: Dual gain-of-2 amplifier driving SAR ADC inputs with minimized inter-channel skew. Use Value: 0.3mV max input offset and matched input bias ensure ≤0.1% channel-to-channel gain error. | Use Scenario: Post-processing of 10-bit video DAC outputs in digital signage controllers. IC Role / Device Role / Timing Role: Rail-to-rail output stage restoring full black-to-white voltage swing after DAC attenuation. Use Value: ±13.5V output swing into 100Ω maintains 1Vpp video signal amplitude with <1% linearity error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX447CSA+ | Lower 100MHz GBW, 70V/µs slew rate, same SO-8 package and pinout | Reduced bandwidth limits use in >5MHz video or ultrasonic applications | Select when cost sensitivity outweighs 10MHz+ signal fidelity requirements |
| LMH6629MA/NOPB | 2.8GHz GBW, 3750V/µs slew rate, SO-8 but different pin assignment (no pin compatibility) | Higher speed demands revised layout; not drop-in for existing MAX427CSA+ designs | Choose for next-generation designs requiring >100MHz small-signal bandwidth |
Compared with MAX427CSA+, MAX447CSA+ offers lower power and cost at reduced bandwidth, while LMH6629MA/NOPB delivers extreme speed at the expense of layout redesign and higher quiescent current-neither is pin-compatible, but both serve overlapping high-speed analog roles.
Availability
MAX427CSA+ is available at Aetrix Electronics and suitable for video line driving, active filtering, and dual-channel ADC driver applications requiring stable component supply and long-term industrial support.
Supply support for MAX427CSA+ 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, designs precision analog, mixed-signal, and power management ICs for industrial, communications, and computing systems.
The MAX427CSA+ belongs to Maxim's high-speed op-amp product line, engineered for legacy video, instrumentation, and signal reconstruction applications where bandwidth, slew rate, and dual-channel matching are critical.
FAQ
Is MAX427CSA+ recommended for new designs?
No, MAX427CSA+ is not recommended for new designs. It was manufactured using a discontinued wafer process, and Maxim advises evaluating replacement solutions. The MAX427CSA+ datasheet remains available for legacy system maintenance and repair, but design-in of MAX427CSA+ in new projects is discouraged by the manufacturer.
What is the maximum output voltage swing of MAX427CSA+?
The MAX427CSA+ delivers ±13.5V output swing into 500Ω loads when operated with ±15V supplies. Output swing reduces linearly with decreasing supply voltage, maintaining rail-to-rail capability down to ±5V supplies, where it achieves ±3.5V swing under the same load conditions.
Does MAX427CSA+ require external compensation?
No, MAX427CSA+ is internally compensated for unity-gain stability. It operates stably with closed-loop gains of 1 or greater without external compensation components, simplifying PCB layout and reducing bill-of-materials count in gain-stage and buffer applications.
What is the input common-mode voltage range of MAX427CSA+?
The input common-mode voltage range of MAX427CSA+ extends from 1.5V above the negative supply rail to 1.5V below the positive supply rail. For example, with ±15V supplies, inputs operate from –13.5V to +13.5V, enabling true single-supply operation when V– is grounded and V+ = +30V.
Can MAX427CSA+ drive 75Ω coaxial video lines directly?
Yes, MAX427CSA+ can drive 75Ω coaxial video lines directly. Its 120V/µs slew rate and ability to deliver full-swing output into 100Ω loads make it suitable for composite video line driving, provided proper source termination (e.g., 75Ω series resistor at output) is implemented to prevent reflections.
MAX427CSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2.8V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX427CSA+ FAQ
1.How can I place an order for MAX427CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX427CSA+ 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 MAX427CSA+ reliable?
The price and inventory of MAX427CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX427CSA+ is usually 5 days.
3.What payment methods are accepted for MAX427CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX427CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX427CSA+?
MAX427CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX427CSA+ 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 MAX427CSA+?
For technical support, including MAX427CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX427CSA+ requirements.
6.How does Aetrix verify that MAX427CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX427CSA+ 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 MAX427CSA+ meets industry standards.
7.What is the process for return or replacement of MAX427CSA+?
All MAX427CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX427CSA+, 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 MAX427CSA+ part is unused and in its original packaging.
Return procedure for MAX427CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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