My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4451EKA
- Part No.:
- MAX4451EKA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
MAX4451EKA.pdf
- Description:
- IC OPAMP VFB 2 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:7,163
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4451EKA 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. Its 8-pin SOT23 package supports compact video line driver and ADC interface designs.
For engineers reviewing the MAX4451EKA datasheet, MAX4451EKA pinout, MAX4451EKA application, or MAX4451EKA equivalent, key selection criteria include its 210MHz small-signal bandwidth, rail-to-rail output swing within 55mV of rails, input common-mode range extending beyond ground, low 6.5mA per amplifier quiescent current, and verified performance in NTSC video routing and CCD imaging systems.
Technical Context
The MAX4451EKA employs voltage-feedback architecture enhanced with current-feedback techniques to achieve wide bandwidth and fast transient response. Its input stage supports common-mode voltages down to VEE − 0.2V and up to VCC − 2.25V, enabling true ground-sensing operation in single-supply configurations.
Internally compensated for unity-gain stability, it requires only a 24Ω feedback resistor in unity-gain configuration to suppress parasitic LC resonance. Output stage local feedback ensures low open-loop output impedance (1.5Ω at 10MHz), minimizing gain sensitivity to load variations across 75Ω and 150Ω video terminations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 210MHz - enables full HD video signal amplification without attenuation at baseband frequencies |
| Slew Rate | 485V/µs - supports clean 2V step transitions in under 5ns, critical for fast video pulse fidelity |
| Differential Gain/Phase | 0.02%/0.08° - meets broadcast-grade NTSC/PAL video accuracy requirements with minimal color distortion |
| Supply Range | +4.5V to +11V single supply - simplifies power design in battery-powered or 5V/9V embedded video systems |
| Output Swing | Within 55mV of each rail (2kΩ load) - maximizes dynamic range in 5V systems (4.9VPP output) |
| Quiescent Current | 6.5mA per amplifier - balances high-speed performance with low power in portable instrumentation |
| Input Noise Density | 10nV/√Hz at 10kHz - preserves SNR in analog front-ends driving 12–14-bit ADCs |
Pinout & Package
The MAX4451EKA is housed in an 8-pin SOT23 package (package code K8-2), measuring 4.0mm × 2.8mm × 1.3mm with gull-wing leads and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INA−) | Amplifier A Inverting Input | Accepts inverted signal path for A channel; supports DC-coupled or AC-coupled configurations |
| 2 (INA+) | Amplifier A Noninverting Input | Primary signal entry for A channel; common-mode range extends to VEE − 0.2V |
| 3 (OUTA) | Amplifier A Output | Rail-to-rail output capable of sourcing/sinking >46mA; drives 75Ω coaxial loads directly |
| 4 (VEE) | Negative Supply / Ground | Reference node for single-supply operation; input common-mode includes ground |
| 5 (VCC) | Positive Supply | Accepts +4.5V to +11V; bypassing with 0.1µF capacitor near pin essential for stability |
| 6 (INB−) | Amplifier B Inverting Input | Independent inverting input for B channel; electrically isolated from A channel (102dB isolation) |
| 7 (INB+) | Amplifier B Noninverting Input | Signal input for B channel; identical electrical specs to INA+ |
| 8 (OUTB) | Amplifier B Output | Fully independent output; enables dual-channel video buffering or differential signaling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >98% of supply rail-to-rail voltage range (e.g., 4.9VPP on +5V), maximizing signal headroom in low-voltage systems |
| Ground-sensing input | Common-mode input range includes VEE (ground), enabling direct connection to single-ended sensors or DAC outputs without level-shifting |
| Low distortion at 5MHz | −63dB THD and −65dBc SFDR ensure minimal harmonic corruption in composite video and IF signal paths |
| High channel isolation | 102dB DC channel-to-channel isolation prevents crosstalk between dual video channels in multi-stream routing |
| Unity-gain stable | Operates reliably at gain = 1 with only 24Ω feedback resistor, eliminating external compensation components in line-driver applications |
Applications
| Set-Top Box Video Processing | Surveillance Camera Signal Chain |
|---|---|
Use Scenario: Amplifying and buffering composite video signals before HDMI encoding or RF modulation in consumer STBs. IC Role / Device Role / Timing Role: Dual-channel video line driver with precise gain flatness and minimal phase delay across 0–5.5MHz. Use Value: 55MHz 0.1dB gain flatness and 0.02%/0.08° differential error preserve color fidelity and sync timing integrity over long PCB traces. | Use Scenario: Driving analog video outputs from CMOS image sensors to DVR inputs over 75Ω coaxial cables. IC Role / Device Role / Timing Role: High-speed buffer isolating sensor output from cable capacitance and downstream loading. Use Value: 485V/µs slew rate and 210MHz bandwidth maintain sharp edge integrity in fast-switching surveillance video with minimal ringing. |
| Portable Test Instrument Front-End | CCD Imaging System Analog Interface |
Use Scenario: Conditioning low-amplitude sensor signals in handheld multimeters or oscilloscope probes. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail I/V converter and signal amplifier operating from single Li-ion cell (3.3–4.2V). Use Value: 10nV/√Hz input noise and 6.5mA quiescent current enable high-resolution measurements without compromising battery life. | Use Scenario: Buffering and gain-setting analog outputs from CCD arrays prior to digitization in medical or industrial imaging. IC Role / Device Role / Timing Role: Dual-channel correlated double sampling (CDS) amplifier with matched DC performance. Use Value: 4mV max input offset voltage and 0.5µV/°C drift ensure pixel-level baseline stability across temperature in high-dynamic-range imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6702MA/NOPB | Higher 1.8GHz bandwidth but 15mA quiescent current; SOIC-8 only; no rail-to-rail output | Better suited for RF IF amplification above 100MHz; unsuitable for rail-to-rail output video drivers | Select when ultra-wide bandwidth outweighs power and output swing constraints |
| ADA4817-2ACPZ-R7 | 1GHz bandwidth, 1.2mA quiescent current, rail-to-rail output; LFCSP-16 package only | Superior power efficiency and bandwidth, but larger footprint and higher cost; requires careful layout for stability | Prefer for space-constrained, battery-powered instruments needing >500MHz bandwidth |
Compared with LMH6702MA/NOPB and ADA4817-2ACPZ-R7, the MAX4451EKA uniquely balances 210MHz bandwidth, rail-to-rail output, ground-sensing input, and 6.5mA power in an 8-pin SOT23-making it optimal for cost-sensitive, size-constrained video line drivers where full rail compliance and NTSC fidelity are mandatory.
Availability
MAX4451EKA is available at Aetrix Electronics and suitable for set-top box manufacturing, surveillance camera production, and portable test instrument development requiring stable component supply and long-term lifecycle support.
Supply support for MAX4451EKA 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 MAX4450/MAX4451 product line was designed specifically for high-fidelity, low-power video signal processing-including composite video line driving, CCD/CMOS sensor interfacing, and analog front-end buffering in bandwidth-critical embedded systems.
FAQ
What is the maximum capacitive load the MAX4451EKA can drive without oscillation?
The MAX4451EKA is not optimized for highly reactive loads. Driving >10pF directly causes peaking and instability. For reliable operation, use a 20Ω–30Ω isolation resistor (RS) in series with the output. With RS = 27Ω, the MAX4451EKA maintains stable closed-loop response up to 120pF capacitive load, as verified in Figure 5 of the datasheet. Always verify layout parasitics during prototype validation.
Does the MAX4451EKA support dual-supply operation, and what are the limits?
Yes, the MAX4451EKA supports dual-supply operation from ±2.25V to ±5.5V. The absolute maximum supply voltage is ±6V (12V total), and operation outside this range risks permanent damage. When using dual supplies, bypass both VCC and VEE pins with 0.1µF capacitors placed as close as possible to the device. The input common-mode range remains symmetric around midsupply, extending to within 2.25V of either rail.
Can the MAX4451EKA be used as a 75Ω video line driver without external resistors?
Yes-the MAX4451EKA's low 1.5Ω open-loop output impedance and rail-to-rail swing allow direct 75Ω back-termination. For optimal NTSC performance, configure as a noninverting amplifier with RF = 75Ω and RG = 75Ω (gain = 2), matching standard video line driver topology. The 0.02%/0.08° differential gain/phase error is measured under these exact 75Ω load conditions per the datasheet's Typical Operating Characteristics.
What is the thermal performance of the MAX4451EKA in its 8-pin SOT23 package?
In the 8-pin SOT23 package (K8-2), the MAX4451EKA has a thermal resistance θJA of 5.26°C/mW (421mW max power dissipation at +70°C ambient). At full 13mA total quiescent current (6.5mA per amp) on +5V supply, power dissipation is ~65mW-resulting in <0.4°C junction-to-ambient rise above ambient. No heatsinking is required for typical video line driver operation, even in sealed enclosures up to +70°C ambient.
How does the MAX4451EKA's channel-to-channel isolation affect dual-channel video routing?
The MAX4451EKA provides 102dB DC channel-to-channel isolation, meaning leakage from one amplifier's output into the other's input is below −102dB relative to full-scale signal. In dual-channel video routing (e.g., Y/C separation or stereo analog audio), this eliminates visible crosstalk artifacts and preserves independent signal integrity-critical for multi-channel CCD readout or simultaneous composite video and audio buffering in compact STB designs.
MAX4451EKA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for MAX4451EKA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4451EKA 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 reliable?
The price and inventory of MAX4451EKA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4451EKA is usually 5 days.
3.What payment methods are accepted for MAX4451EKA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4451EKA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4451EKA?
MAX4451EKA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4451EKA 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?
For technical support, including MAX4451EKA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4451EKA requirements.
6.How does Aetrix verify that MAX4451EKA is sourced from the original manufacturer or authorized distributors?
All MAX4451EKA 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 meets industry standards.
7.What is the process for return or replacement of MAX4451EKA?
All MAX4451EKA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4451EKA, 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 part is unused and in its original packaging.
Return procedure for MAX4451EKA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4451EKA Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
