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Analog Devices Inc./Maxim Integrated MAX4389EXT
- Part No.:
- MAX4389EXT
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MAX4389EXT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,298
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Product details
Overview
MAX4389EXT from Maxim Integrated is a single-channel, rail-to-rail output operational amplifier with disable functionality, designed for high-speed video line driving and analog interface applications. It delivers 85MHz -3dB bandwidth, 500V/µs slew rate, 0.015% differential gain error, and operates from single 4.5V–11V or dual ±2.25V–±5.5V supplies - enabling robust NTSC video signal conditioning in surveillance systems.
For engineers reviewing the MAX4389EXT datasheet, MAX4389EXT pinout, MAX4389EXT application, or MAX4389EXT equivalent, this page provides verified electrical specifications, SC70-6 package layout, disable timing (40ns ON / 80ns OFF), rail-to-rail output swing into 75Ω, and real-world video-line-driver use cases with distortion and settling performance data.
Technical Context
The MAX4389EXT employs voltage-feedback architecture enhanced with current-feedback techniques to achieve high slew rate and wide bandwidth while maintaining unity-gain stability. Its input stage supports common-mode voltage down to VEE (ground in single-supply mode) and up to VCC – 2.25V, enabling direct interfacing with ADCs and CCD sensors.
Internal compensation ensures stable unity-gain operation; external 24Ω feedback resistor optimizes AC response by damping parasitic LC resonance. The disable function asserts high-impedance output (95kΩ) with only 450µA quiescent current, supporting multiplexer and power-gating configurations in multi-channel video systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 85MHz (measured under dual ±5V supply, large-signal 2VP-P condition) |
| Slew Rate | 500V/µs (enables clean 2VP-P video pulse transmission with minimal distortion) |
| Differential Gain Error | 0.015% (NTSC-compliant performance for broadcast-quality video line driving) |
| Output Drive | ±50mA into 75Ω (directly drives standard video termination without external buffers) |
| Disable Current | 450µA (reduces system standby power in multi-amplifier video routing architectures) |
| Supply Range | Single 4.5V–11V or dual ±2.25V–±5.5V (supports legacy 5V and modern low-voltage video subsystems) |
| Settling Time | 21ns to 0.1% (ensures accurate pixel-level timing in high-resolution digital video capture) |
Pinout & Package
The MAX4389EXT is housed in a 6-pin SC70 package (package code X5-1), footprint-compatible with SOT23-6 but 30% smaller. Thermal resistance θJA = 322°C/W; recommended PCB pad layout per Maxim drawing 21-0077.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Rail-to-rail voltage output capable of sourcing/sinking ±50mA into 75Ω load |
| 2 - VEE | Negative supply | Connect to ground (single supply) or negative rail; bypass with 0.1µF capacitor |
| 3 - IN+ | Noninverting input | High-impedance node (3MΩ common-mode input resistance); accepts VEE to VCC–2.25V |
| 4 - IN− | Inverting input | Differential input pair node; matched to IN+ for <1mV offset voltage matching in multi-amp variants |
| 5 - DISABLE | Active-low disable control | Logic-low (≤VCC–3V) places output in high-Z state; 40ns enable / 80ns disable timing |
| 6 - VCC | Positive supply | Accepts 4.5V–11V single or ±2.25V–±5.5V dual; bypass with 0.1µF capacitor near pin |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Within 200mV of both rails into 75Ω, preserving full dynamic range for video signals |
| Low-distortion video amplification | –59dBc SFDR at 5MHz and 2VP-P output enables clean composite video transmission |
| Fast disable switching | 40ns enable / 80ns disable times support high-speed video multiplexing without ghosting |
| Unity-gain stable design | No external compensation required; optimized for 24Ω feedback resistor in video line driver configs |
| Input common-mode range to VEE | Enables direct connection to ground-referenced sources (e.g., CCD outputs, DACs) |
Applications
| Surveillance Video Systems | Analog-to-Digital Converter Interface |
|---|---|
Use Scenario: Driving 75Ω coaxial cable from analog camera sensor output to DVR front-end. IC Role / Device Role / Timing Role: High-speed voltage buffer and line driver with disable control for channel selection. Use Value: 0.015% differential gain/phase error preserves color fidelity; ±50mA drive eliminates need for discrete emitter-follower stages. | Use Scenario: Buffering DAC output before feeding into high-resolution ADC sampling path. IC Role / Device Role / Timing Role: Unity-gain follower isolating DAC from ADC input capacitance and noise. Use Value: 21ns settling time ensures accurate sampling of fast-stepping DAC waveforms; rail-to-rail swing maximizes ADC input utilization. |
| CCD Imaging Systems | Video-on-Demand Set-Top Boxes |
Use Scenario: Amplifying low-noise CCD pixel output with minimal added distortion before correlated double sampling. IC Role / Device Role / Timing Role: Low-noise, low-offset gain stage with DC-coupled input capability. Use Value: 13nV/√Hz input voltage noise and 0.015° differential phase error preserve image SNR and color accuracy. | Use Scenario: Driving composite video output to TV display with automatic source switching via disable control. IC Role / Device Role / Timing Role: Final-stage video line driver with fast enable/disable for seamless HDMI/AV input toggling. Use Value: 40ns enable time prevents black screen artifacts during source switching; 85MHz bandwidth supports 480p/576p resolution. |
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 |
|---|---|---|---|
| LMH6702MF/NOPB | Higher 1.7GHz GBW but no disable function; 12mA quiescent current vs. 5.5mA | Lacks integrated disable logic; requires external MOSFET switch for power gating | Choose when ultra-wide bandwidth (>500MHz small-signal) is critical and disable is implemented externally |
| ADA4817-1ACPZ-R7 | Faster 1GHz GBW and lower 4.3nV/√Hz noise, but no rail-to-rail output and no disable pin | Requires level-shifting for ground-referenced video; not suitable for direct 75Ω line driving | Prefer for precision ADC buffering where noise dominates, not for video line driving |
Compared with LMH6702MF/NOPB and ADA4817-1ACPZ-R7, the MAX4389EXT uniquely integrates rail-to-rail output, disable control, and NTSC-optimized distortion performance in a 6-pin SC70 package - making it the only drop-in solution for space-constrained, low-power video routing applications requiring fast channel switching.
Availability
MAX4389EXT is available at Aetrix Electronics and suitable for surveillance video systems, analog-to-digital converter interface circuits, and CCD imaging systems requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for MAX4389EXT 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 MAX4389EXT belongs to Maxim's high-speed video op amp product line, engineered specifically for low-distortion, rail-to-rail video signal conditioning with integrated power management in ultra-small packages.
FAQ
What is the maximum capacitive load the MAX4389EXT can drive without oscillation?
The MAX4389EXT is not optimized for direct capacitive loading. Driving >10pF requires an isolation resistor (typically 10Ω–15Ω) between the output and load to maintain stability. Figure 3 in the datasheet shows optimal RISO vs. CL; for 100pF, a 27Ω resistor is recommended. Without isolation, peaking and ringing occur above 10MHz, degrading video signal integrity. MAX4389EXT must be used with proper layout and isolation for reliable operation.
Does the MAX4389EXT support single-supply operation with ground-referenced input signals?
Yes. The MAX4389EXT input common-mode range extends to VEE (ground in single-supply mode) and up to VCC – 2.25V, allowing direct connection of ground-referenced sources like DAC outputs or CCD sensors. Its rail-to-rail output swings within 200mV of both rails, preserving full signal swing. This makes MAX4389EXT ideal for single-5V video interfaces where input and output share a common ground reference.
What is the typical power dissipation of the MAX4389EXT at +25°C?
At +25°C with VCC = 5V and VEE = 0V, the MAX4389EXT draws 5.5mA quiescent supply current per amplifier, resulting in ~27.5mW static power dissipation. In disabled state, current drops to 450µA (2.25mW). The SC70-6 package has θJA = 322°C/W; at 5.5mA, junction temperature rise is ~8.9°C above ambient - well within safe operating limits for continuous video line driving.
Can the MAX4389EXT be used in inverting amplifier configurations?
Yes. The MAX4389EXT is unity-gain stable and supports both inverting and noninverting configurations. For best AC performance in inverting mode, use low-value resistors (e.g., RF = RG = 100Ω) to avoid bandwidth degradation from parasitic capacitance. Layout guidelines require short traces, ground plane, and 0.1µF supply bypassing. MAX4389EXT maintains 85MHz bandwidth and 0.1dB flatness up to 27MHz in properly implemented inverting gain-of-two circuits.
Is the MAX4389EXT pin-compatible with other devices in the MAX4389/MAX4390 family?
No. The MAX4389EXT (6-pin SC70) shares pinout with MAX4390EXT but differs from MAX4393/MAX4394/MAX4396 which have additional disable pins per channel. MAX4389EXT pin 5 is DISABLE; MAX4390EXT pin 5 is also DISABLE, but MAX4390EUK+T (5-pin SOT23) lacks DISABLE entirely. Always verify package and pin function using the "Pin Configurations" section of the MAX4389/MAX4390 datasheet before board reuse.
MAX4389EXT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 500V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2.5 µA
- Voltage - Input Offset:
- 7 mV
- Current - Supply:
- 6mA
- Current - Output / Channel:
- 95 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:
- SC-70-6
MAX4389EXT FAQ
1.How can I place an order for MAX4389EXT through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4389EXT 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 MAX4389EXT reliable?
The price and inventory of MAX4389EXT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4389EXT is usually 5 days.
3.What payment methods are accepted for MAX4389EXT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4389EXT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4389EXT?
MAX4389EXT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4389EXT 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 MAX4389EXT?
For technical support, including MAX4389EXT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4389EXT requirements.
6.How does Aetrix verify that MAX4389EXT is sourced from the original manufacturer or authorized distributors?
All MAX4389EXT 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 MAX4389EXT meets industry standards.
7.What is the process for return or replacement of MAX4389EXT?
All MAX4389EXT units undergo pre-shipment inspection (PSI). If there is an issue with MAX4389EXT, 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 MAX4389EXT part is unused and in its original packaging.
Return procedure for MAX4389EXT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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