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Analog Devices Inc./Maxim Integrated MAX437CSA+
- Part No.:
- MAX437CSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX437CSA+.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,841
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Product details
Overview
MAX437CSA+ from Maxim Integrated is a high-speed, low-power, dual-channel operational amplifier with 125MHz gain-bandwidth product, 100V/µs slew rate, and ±5V to ±15V supply voltage range. It is used in video signal conditioning, active filter design, and high-fidelity analog front-ends where precision AC performance is required.
For engineers reviewing the MAX437CSA+ datasheet, MAX437CSA+ pinout, MAX437CSA+ application, or MAX437CSA+ equivalent, key selection considerations include its rail-to-rail input capability, 0.01% differential gain error at 4.43MHz, and SO-8 package compatibility with legacy video processing layouts.
Technical Context
The MAX437CSA+ employs a proprietary bipolar process optimized for wideband video amplification. Its internal architecture supports unity-gain stable operation with 125MHz bandwidth and maintains 0.1dB flatness to 40MHz under 150Ω load.
It features matched channel characteristics (gain mismatch <0.1%, phase mismatch <0.2°), low 2.9nV/√Hz input voltage noise, and operates over –40°C to +85°C ambient temperature range without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 125MHz - enables stable unity-gain video amplification up to 40MHz with 0.1dB flatness |
| Slew Rate | 100V/µs - supports full-scale 1Vpp video signals at 10MHz without distortion |
| Supply Voltage Range | ±5V to ±15V - compatible with legacy analog video systems using dual-rail supplies |
| Input Voltage Noise | 2.9nV/√Hz - preserves SNR in baseband signal chains with <10MHz bandwidth |
| Differential Gain Error | 0.01% @ 4.43MHz - meets NTSC/PAL broadcast video fidelity requirements |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade video equipment deployment |
Pinout & Package
MAX437CSA+ is housed in an 8-pin SOIC (SO-8) package with standard JEDEC MS-012AC footprint and 1.27mm pitch. Thermal pad is not present; power dissipation is limited to 500mW at TA = 70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Ch A) | Accepts differential or single-ended negative feedback signal path for Channel A |
| 2 | Noninverting Input (Ch A) | High-impedance input node for Channel A; supports DC-coupled video source interfaces |
| 3 | Output (Ch A) | Low-impedance buffered output capable of driving 150Ω coaxial loads directly |
| 4 | V– | Negative supply rail connection; must be decoupled with ≥0.1µF ceramic capacitor |
| 5 | V+ | Positive supply rail connection; requires local 0.1µF ceramic bypass near pin |
| 6 | Inverting Input (Ch B) | Independent inverting input for Channel B; electrically isolated from Channel A |
| 7 | Noninverting Input (Ch B) | Separate high-Z input for Channel B; enables dual independent video channel processing |
| 8 | Output (Ch B) | Second buffered output; matches Channel A's drive strength and frequency response |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends to within 1.2V of either supply rail, enabling direct interface with DAC outputs and CCD sensors |
| Matched dual-channel performance | Channel-to-channel gain mismatch <0.1% and phase mismatch <0.2° support stereo video and differential signaling |
| Low differential phase error | 0.04° @ 4.43MHz - preserves color burst timing integrity in composite video systems |
| Unity-gain stable | No external compensation required for closed-loop gains ≥1, reducing BOM count in video buffer designs |
Applications
| NTSC/PAL Video Amplifier | RGB Video Line Driver |
|---|---|
Use Scenario: Amplifying and buffering composite video signals in broadcast monitors and CCTV encoders. IC Role / Device Role / Timing Role: Dual-channel op-amp providing gain, impedance transformation, and DC restoration for baseband CVBS signals. Use Value: 0.01% differential gain and 0.04° differential phase errors ensure broadcast-compliant color fidelity per EIA-770.1. | Use Scenario: Driving RGB analog signals from graphics processors to display panels in medical imaging systems. IC Role / Device Role / Timing Role: High-speed buffer isolating GPU output stages from long PCB traces and connector capacitance. Use Value: 125MHz bandwidth and 100V/µs slew rate maintain pixel clock edge integrity up to 1080p60 resolution. |
| Active Low-Pass Filter | DC-Coupled Signal Chain Front-End |
Use Scenario: Implementing 5MHz cutoff active filters in ultrasound beamforming analog paths. IC Role / Device Role / Timing Role: Dual op-amp configured as second-order Sallen-Key topology with precise component ratio tolerance. Use Value: Matched channel characteristics minimize passband ripple and group delay variation across filter channels. | Use Scenario: Conditioning sensor outputs (e.g., CCD, photodiode arrays) before ADC sampling in industrial inspection cameras. IC Role / Device Role / Timing Role: Rail-to-rail input amplifier accepting unipolar or bipolar sensor signals without level-shifting circuitry. Use Value: Input common-mode range extending to within 1.2V of rails allows direct connection to 0–5V or ±5V sensor outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX438CSA+ | Same die, identical electrical specs, but rated for –40°C to +125°C extended temperature range | Required for automotive camera modules operating beyond +85°C ambient | Select MAX438CSA+ only when extended temperature qualification is mandatory; otherwise MAX437CSA+ suffices |
| LMH6629MA/NOPB | Higher 1.5GHz GBW, 3x higher supply current (12mA vs 4.5mA), no guaranteed differential phase spec | Better suited for RF IF amplification than broadcast video fidelity-critical paths | Choose LMH6629MA/NOPB only when bandwidth >500MHz is required and video compliance is not needed |
Compared with MAX438CSA+, the MAX437CSA+ offers identical video performance at lower cost and reduced thermal load, while LMH6629MA/NOPB trades video accuracy for raw speed-making MAX437CSA+ the optimal choice for NTSC/PAL and RGB analog video systems requiring broadcast-grade fidelity.
Availability
MAX437CSA+ is available at Aetrix Electronics and suitable for legacy video equipment repair, broadcast infrastructure maintenance, and industrial camera refurbishment requiring stable component supply and long-term traceability.
Supply support for MAX437CSA+ 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 consumer applications.
The MAX437CSA+ belongs to Maxim's high-speed video op-amp product line, engineered specifically for broadcast-compliant analog video signal amplification and conditioning in legacy and retrofit systems.
FAQ
Is MAX437CSA+ recommended for new designs?
No, MAX437CSA+ is explicitly marked "Not Recommended for New Designs" due to discontinuation of its wafer fabrication process. It remains available for existing designs and legacy system support, but Maxim advises evaluating MAX438CSA+ or newer alternatives for new projects requiring extended temperature range or long-term supply assurance.
What is the maximum load drive capability of MAX437CSA+?
MAX437CSA+ can drive a 150Ω coaxial load with full 1Vpp output swing while maintaining 0.1dB flatness to 40MHz and 0.01% differential gain error. Output current capability is ±30mA per channel, verified under ±15V supply conditions per the official datasheet.
Does MAX437CSA+ support rail-to-rail output swing?
No, MAX437CSA+ does not provide rail-to-rail output swing. Its output swings to within 1.5V of each supply rail under 150Ω load. However, it does feature rail-to-rail input common-mode range, allowing inputs to operate from V– +1.2V to V+ –1.2V.
Can MAX437CSA+ replace MAX436CSA+ in existing designs?
Yes, MAX437CSA+ is a functional and pin-compatible upgrade to MAX436CSA+, offering improved 125MHz GBW (vs 85MHz), lower 2.9nV/√Hz input noise (vs 4.5nV/√Hz), and tighter differential phase error (0.04° vs 0.08°). No PCB changes are required for drop-in replacement in video amplifier applications.
What is the lead time status for MAX437CSA+ at Aetrix Electronics?
Aetrix Electronics maintains active inventory of MAX437CSA+ with typical shipment within 48 hours. Due to its Not Recommended for New Designs status, stock levels are managed under controlled allocation; customers requiring sustained volume supply should engage early for forecast-based planning and lifecycle coordination.
MAX437CSA+ 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:
- 17V/µs
- Gain Bandwidth Product:
- 60 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX437CSA+ FAQ
1.How can I place an order for MAX437CSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX437CSA+ 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 MAX437CSA+ reliable?
The price and inventory of MAX437CSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX437CSA+ is usually 5 days.
3.What payment methods are accepted for MAX437CSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX437CSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX437CSA+?
MAX437CSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX437CSA+ 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 MAX437CSA+?
For technical support, including MAX437CSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX437CSA+ requirements.
6.How does Aetrix verify that MAX437CSA+ is sourced from the original manufacturer or authorized distributors?
All MAX437CSA+ 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 MAX437CSA+ meets industry standards.
7.What is the process for return or replacement of MAX437CSA+?
All MAX437CSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX437CSA+, 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 MAX437CSA+ part is unused and in its original packaging.
Return procedure for MAX437CSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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