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Analog Devices Inc./Maxim Integrated MAX4451EKA+T
- Part No.:
- MAX4451EKA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
MAX4451EKA+T.pdf
- Description:
- IC OPAMP VFB 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,086
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Product details
Overview
MAX4451EKA+T from Maxim Integrated is a dual, unity-gain-stable, rail-to-rail output operational amplifier optimized for high-speed video and instrumentation signal conditioning. It delivers 210MHz -3dB bandwidth, 485V/µs slew rate, and 0.02%/0.08° differential gain/phase error while operating from a single +4.5V to +11V supply or dual ±2.25V to ±5.5V supplies - enabling use in battery-powered surveillance cameras and analog-to-digital converter front-ends.
For engineers reviewing the MAX4451EKA+T datasheet, MAX4451EKA+T pinout, MAX4451EKA+T application, or MAX4451EKA+T equivalent, key selection criteria include its 8-pin SOT23 package, 55MHz 0.1dB gain flatness for composite video, low 6.5mA per amplifier quiescent current, and guaranteed -40°C to +85°C operation with rail-to-rail output swing within 55mV of each supply rail.
Technical Context
The MAX4451EKA+T employs voltage-feedback architecture enhanced with current-feedback techniques to achieve wide bandwidth and fast transient response. Its input stage supports common-mode voltages extending beyond the negative rail (to VEE − 200mV) and up to VCC − 2.25V, while the output stage uses local feedback to maintain low open-loop output impedance (1.5Ω at 10MHz) and minimize load-dependent gain variation.
This dual op amp is internally compensated for unity-gain stability and requires only a 24Ω series feedback resistor in unity-gain configuration to suppress parasitic LC resonance. It achieves −65dBc SFDR and −63dB THD at 5MHz with 2VP-P output, meeting stringent requirements for NTSC/PAL video line driving and CCD imaging signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 210MHz - supports full HD video baseband signal amplification without attenuation |
| Slew Rate | 485V/µs - enables clean 1080p video pulse response with <16ns settling to 0.1% |
| Supply Range | +4.5V to +11V single supply - compatible with 5V and 9V battery or DC-DC systems |
| Output Swing | Within 55mV of rails (2kΩ load) - maximizes dynamic range in single-supply 5V systems |
| Differential Gain/Phase | 0.02%/0.08° - meets broadcast-grade video fidelity requirements for set-top boxes |
| Quiescent Current | 6.5mA per amplifier - enables dual-channel operation in power-constrained portable instruments |
| Input Voltage Range | Extends to VEE − 200mV - allows ground-referenced input signals in single-supply configurations |
Pinout & Package
The MAX4451EKA+T is housed in an 8-pin SOT23 package (package code K8-2), measuring 4.5mm × 3.0mm × 1.2mm, RoHS-compliant and moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUTA | Amplifier A output | Low-impedance rail-to-rail output capable of driving 75Ω video loads directly |
| 2 - IN- | Inverting input | High-impedance node; requires matched layout for optimal CMRR above 10MHz |
| 3 - IN+ | Noninverting input | Accepts common-mode inputs down to VEE − 200mV - enables true ground-sensing operation |
| 4 - VEE | Negative supply / ground | Reference for both amplifiers; must be bypassed with 0.1µF capacitor near the pin |
| 5 - VCC | Positive supply | Supports +4.5V to +11V; requires local 0.1µF ceramic bypass to ground |
| 6 - INB- | Amplifier B inverting input | Independent channel input; shares no internal nodes with Amplifier A |
| 7 - INB+ | Amplifier B noninverting input | Enables dual-channel synchronous signal processing (e.g., Y/C separation) |
| 8 - OUTB | Amplifier B output | Matched AC performance to OUTA; channel-to-channel isolation >102dB at DC |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >4.9VP-P output in +5V systems - preserves signal headroom for ADC interface stages |
| 55MHz 0.1dB gain flatness | Ensures minimal amplitude distortion across NTSC/PAL luminance bandwidth (0–4.2MHz) |
| −65dBc spurious-free dynamic range | Supports high-fidelity digitization of analog video with >10-bit effective resolution at 5MHz |
| Low 10nV/√Hz input voltage noise | Maintains SNR integrity in low-level sensor signal amplification (e.g., CCD pixel outputs) |
| Unity-gain stable with 24Ω RF | Eliminates need for external compensation; simplifies PCB layout for video line drivers |
Applications
| Surveillance Video Systems | Video Line Driver |
|---|---|
Use Scenario: Driving analog video signals over coaxial cable from IP camera sensors to DVR inputs. IC Role / Device Role / Timing Role: Dual-channel buffer and driver - one channel for luminance (Y), one for chrominance (C). Use Value: 0.02%/0.08° differential gain/phase error ensures color fidelity over 300m cable runs; rail-to-rail output sustains 1VP-P NTSC signal into 75Ω load. |
Use Scenario: Impedance-matched transmission of composite video from FPGA or ASIC to monitor or encoder. IC Role / Device Role / Timing Role: High-speed voltage follower with 75Ω source termination capability. Use Value: 210MHz bandwidth and 485V/µs slew rate prevent edge rounding on sync pulses; 55mV rail margin avoids clipping on 1VP-P signals. |
| Analog-to-Digital Converter Interface | CCD Imaging Systems |
Use Scenario: Driving multiplexed analog outputs from precision ADCs in portable test equipment. IC Role / Device Role / Timing Role: Low-noise, fast-settling driver between signal conditioner and ADC sample-and-hold input. Use Value: 16ns 0.1% settling time synchronizes with 50MSPS ADC sampling; −63dB THD prevents harmonic aliasing into Nyquist band. |
Use Scenario: Amplifying low-current, low-voltage pixel outputs from interline-transfer CCDs before correlated double sampling. IC Role / Device Role / Timing Role: Low-noise, wideband transimpedance or voltage gain stage with DC-coupled input. Use Value: 10nV/√Hz input voltage noise and 1.8pA/√Hz current noise preserve sub-LSB SNR; input common-mode range to VEE − 200mV accommodates CCD reset clamping. |
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 |
|---|---|---|---|
| LMH6702MA/NOPB | Higher 1.7GHz GBW but higher 11.5mA quiescent current; no rail-to-rail output (clips ~1.2V from rails) | Better for RF IF amplification; unsuitable for single-supply 5V video line driving requiring full swing | Select when >1GHz small-signal bandwidth is required and rail-to-rail output is not critical |
| ADA4817-2ARMZ | Lower 1.05GHz GBW but superior 0.9nV/√Hz noise; rail-to-rail output with 105mA drive capability | Better for low-noise photodiode preamps; less optimized for 75Ω video load drive and differential phase specs | Select when ultra-low noise dominates over video-specific distortion metrics and load drive |
Compared with LMH6702MA/NOPB and ADA4817-2ARMZ, the MAX4451EKA+T uniquely balances video-grade distortion performance (0.02%/0.08°), rail-to-rail output in +5V systems, and low 6.5mA per amplifier supply current - making it the most direct fit for cost-sensitive, space-constrained, single-supply video signal routing.
Availability
MAX4451EKA+T is available at Aetrix Electronics and suitable for surveillance video systems, battery-powered instrumentation, and analog-to-digital converter interface designs requiring stable component supply across industrial temperature ranges.
Supply support for MAX4451EKA+T 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 MAX4450/MAX4451 family was designed specifically for high-fidelity, low-power video signal conditioning - targeting set-top boxes, digital cameras, and CCD imaging systems where bandwidth, distortion, and supply flexibility are critical.
FAQ
What is the operating temperature range for the MAX4451EKA+T?
The MAX4451EKA+T is specified for continuous operation from −40°C to +85°C. This industrial temperature range is validated across all key AC and DC parameters including bandwidth, slew rate, and differential gain/phase error - ensuring reliable performance in outdoor surveillance enclosures and portable test instruments without derating.
Does the MAX4451EKA+T require external compensation for unity-gain stability?
No, the MAX4451EKA+T is internally compensated for unity-gain stability. However, a 24Ω resistor must be placed in series with the feedback path in unity-gain configurations to dampen parasitic LC resonance caused by board trace inductance and feedback capacitance - a requirement explicitly documented in the MAX4451EKA+T datasheet Figure 1a and Applications Information section.
Can the MAX4451EKA+T drive a 75Ω video load directly?
Yes, the MAX4451EKA+T is characterized to drive 75Ω loads with full performance: typical differential gain/phase error of 0.02%/0.08°, −65dBc SFDR, and 210MHz bandwidth are all measured with RL = 75Ω to VCC/2. The output stage delivers >100mA peak current, supporting standard video line driver configurations without external buffers.
What is the input common-mode voltage range of the MAX4451EKA+T?
The MAX4451EKA+T input common-mode voltage range extends from (VEE − 0.2V) to (VCC − 2.25V). In a +5V single-supply configuration (VEE = 0V), this means inputs can swing from −0.2V to +2.75V - enabling true ground-referenced signal handling and compatibility with DC-coupled CCD or sensor outputs without level-shifting circuitry.
Is the MAX4451EKA+T pin-compatible with other dual op amps in SOT23-8 packages?
No documented pin-to-pin compatibility exists between the MAX4451EKA+T and other dual op amps in 8-pin SOT23 packages. Its pinout (OUTA, IN−, IN+, VEE, VCC, INB−, INB+, OUTB) is specific to the MAX4450/MAX4451 family. Substituting alternate parts requires verification of both pin function alignment and AC performance matching - especially for video-critical parameters like differential phase.
MAX4451EKA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 485V/µs
- Gain Bandwidth Product:
- 175 MHz
- -3db Bandwidth:
- 210 MHz
- Current - Input Bias:
- 6.5 µA
- Voltage - Input Offset:
- 4 mV
- Current - Supply:
- 6.5mA (x2 Channels)
- Current - Output / Channel:
- 70 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
MAX4451EKA+T FAQ
1.How can I place an order for MAX4451EKA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4451EKA+T 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 MAX4451EKA+T reliable?
The price and inventory of MAX4451EKA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4451EKA+T is usually 5 days.
3.What payment methods are accepted for MAX4451EKA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4451EKA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4451EKA+T?
MAX4451EKA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4451EKA+T 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 MAX4451EKA+T?
For technical support, including MAX4451EKA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4451EKA+T requirements.
6.How does Aetrix verify that MAX4451EKA+T is sourced from the original manufacturer or authorized distributors?
All MAX4451EKA+T 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 MAX4451EKA+T meets industry standards.
7.What is the process for return or replacement of MAX4451EKA+T?
All MAX4451EKA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4451EKA+T, 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 MAX4451EKA+T part is unused and in its original packaging.
Return procedure for MAX4451EKA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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