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Analog Devices Inc./Maxim Integrated MAX4228EUB+
- Part No.:
- MAX4228EUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4228EUB+.pdf
- Description:
- IC OPAMP CFA 2 CIRC 10UMAX/USOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,029
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Product details
Overview
MAX4228EUB+ from Maxim Integrated is a dual-channel, current-feedback operational amplifier optimized for closed-loop gain ≥ +2 (6dB), delivering 600MHz -3dB bandwidth, 1700V/µs slew rate, and 5ns settling time to 0.1%, with shutdown mode reducing supply current to 350µA. It drives ±2.5V into four back-terminated 75Ω video loads while maintaining 0.01% differential gain and 0.02° phase error - ideal for high-fidelity video line drivers and ADC input buffering in portable systems.
For engineers reviewing the MAX4228EUB+ datasheet, MAX4228EUB+ pinout, MAX4228EUB+ application, or MAX4228EUB+ equivalent, key selection criteria include its +2V/V minimum stable gain configuration, µMAX-10 package thermal performance, shutdown-enabled multiplexing capability, and verified 300MHz 0.1dB gain flatness under RL = 100Ω conditions.
Technical Context
The MAX4228EUB+ employs current-mode feedback architecture with transimpedance open-loop transfer function, enabling gain-bandwidth independence at low gains and supporting stable operation only at closed-loop gains of +2V/V or higher. Its internal compensation targets 600MHz bandwidth with RF = RG = 470Ω in µMAX-10 package.
It features dual independent amplifiers sharing common VCC/VEE rails and separate SHDN pins (SHDNA/SHDNB), each providing high-impedance output (100kΩ) and 350µA quiescent current in shutdown. Input stage uses matched bipolar transistors with RIN+ = 700kΩ and RIN− = 45kΩ, enabling precise current-sensing feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 600MHz at AV = +2V/V - supports HD video baseband and XDSL upstream signal integrity |
| Slew Rate | 1700V/µs - enables clean 2V-step response within 5ns, critical for fast-settling ADC drivers |
| Differential Gain/Phase Error | 0.01% / 0.02° - meets SMPTE 253M broadcast video fidelity requirements |
| THD @ 10MHz | -60dBc - ensures minimal harmonic distortion in RF receiver IF stages |
| Supply Current (Normal) | 6.0mA per amplifier - enables dual-channel operation within 12mA total budget for battery-powered gear |
| Shutdown Current | 350µA per amplifier - allows dynamic channel disabling in video switch/mux arrays without load switching |
| Output Drive | ±2.5V into 4×75Ω back-terminated loads - sustains full swing across standard video distribution topologies |
Pinout & Package
MAX4228EUB+ is housed in a 10-pin µMAX package (3mm × 3mm, 0.8mm height), thermally enhanced with exposed paddle, rated for -40°C to +85°C operation. Pin 10 is exposed thermal pad (must be soldered to PCB ground plane for optimal thermal performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VEE) | Negative power supply | Connect to -2.85V to -5.5V; supplies bias current for both amplifiers' NPN input stage |
| 2 (INA−) | Amp A inverting input | Current-summing node for feedback network; requires minimal stray capacitance (<0.3pF) for stability |
| 3 (INA+) | Amp A noninverting input | High-impedance voltage reference point; RIN+ = 700kΩ enables high-Z sensor interfacing |
| 4 (OUTA) | Amp A output | Capable of sourcing/sinking 80mA; high-Z in shutdown (100kΩ) enables analog multiplexing |
| 5 (SHDNA) | Amp A shutdown control | TTL-compatible input; logic low (≤0.8V) activates 350µA shutdown mode |
| 6 (VCC) | Positive power supply | Connect to +2.85V to +5.5V; decoupling requires 10nF ceramic capacitor placed ≤2mm from pin |
| 7 (INB−) | Amp B inverting input | Independent current-summing node; layout must mirror INA− to maintain gain matching <0.1dB up to 100MHz |
| 8 (INB+) | Amp B noninverting input | Matched to INA+; differential input pair enables balanced signal routing in RF receivers |
| 9 (OUTB) | Amp B output | Electrically isolated from OUTA; allows independent loading and termination |
| 10 (SHDNB) | Amp B shutdown control | Independent control enables staggered enable/disable sequencing in multi-channel video switches |
Key Features
| Feature | Design Value |
|---|---|
| Gain-stable at +2V/V or higher | Eliminates need for external compensation; enables direct use in 6dB-gain video line drivers without peaking |
| 0.1dB gain flatness to 300MHz | Preserves amplitude integrity across NTSC/PAL/HD-SDI baseband spectra without post-equalization |
| 100kΩ shutdown output impedance | Permits >8:1 analog video multiplexing ratio with <0.5dB insertion loss between active channels |
| 1700V/µs slew rate | Supports 1080p60 RGB sampling at 165MHz pixel clock with <0.1% nonlinear settling error |
| 6mA quiescent current per amp | Enables dual-channel operation on single-cell Li-ion (3.0–4.2V) with LDO regulation and <150mW total dissipation |
Applications
| Video Line Drivers | ADC Input Buffers |
|---|---|
Use Scenario: Driving composite video signals over 100m coaxial cable with 75Ω termination at both ends. IC Role / Device Role / Timing Role: Dual-channel current-feedback amplifier configured as unity-gain follower (AV = +1) for Amp A and +2V/V gain stage for Amp B to compensate cable loss. Use Value: Maintains 0.01% differential gain error and 300MHz 0.1dB flatness, eliminating need for external peaking networks in broadcast infrastructure. | Use Scenario: Buffering 12-bit, 105MSPS ADC inputs in medical ultrasound beamformers where transient fidelity impacts image resolution. IC Role / Device Role / Timing Role: High-speed input driver with 5ns 0.1% settling time, driving 10pF ADC input capacitance while rejecting 50/60Hz common-mode noise. Use Value: Enables full-scale 2Vpp sine wave digitization at 10MHz with -60dBc THD, preserving SNR > 70dB across Nyquist band. |
| Video Switches | XDSL Drivers |
Use Scenario: 4×2 analog video matrix switch in professional video editing consoles requiring glitch-free channel selection. IC Role / Device Role / Timing Role: Dual amplifier with independent SHDNA/SHDNB pins enabling zero-crossing switching via synchronized shutdown activation. Use Value: Achieves <10ns break-before-make timing with 100kΩ off-state impedance, preventing crosstalk between SD/HD sources during transition. | Use Scenario: Transmit path driver in ADSL2+ line cards handling 1.1MHz upstream signals with stringent spectral mask compliance. IC Role / Device Role / Timing Role: Final-stage line driver operating at +5V/−5V rails, delivering +23dBm output power into 100Ω hybrid coupler. Use Value: Delivers 42dBm third-order intercept (IP3) at 30MHz, meeting ITU-T G.992.5 spectral purity requirements without digital pre-distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6723MA/NOPB | Single-channel, 1.8GHz GBW, no shutdown, SO-8 package, 12.5mA IQ | Lacks dual-channel integration and low-power shutdown; requires external mux for switching | Select when maximum bandwidth (>1GHz) is prioritized over channel count and power efficiency |
| ADA4870ARZ | Single-channel, 1200V/µs slew, ±15V operation, 100mA drive, no shutdown, SO-8 | Higher voltage swing (+12V/−12V), no integrated shutdown, larger footprint, higher IQ (12mA) | Select for industrial analog output stages needing ±10V swing and 100mA continuous drive |
Compared with LMH6723MA/NOPB and ADA4870ARZ, the MAX4228EUB+ uniquely combines dual-channel operation, 350µA shutdown current, and 600MHz bandwidth in a 3mm × 3mm µMAX package - making it the only option suitable for space-constrained, battery-aware video multiplexers requiring simultaneous channel management.
Availability
MAX4228EUB+ is available at Aetrix Electronics and suitable for video line drivers, ADC input buffering, and XDSL transmitter applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability for medical and broadcast equipment manufacturing.
Supply support for MAX4228EUB+ 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 demanding industrial, communications, and consumer applications.
The MAX4223–MAX4228 family was engineered specifically for ultra-high-speed video signal conditioning and portable broadband communications, balancing GHz-class bandwidth with sub-6mA quiescent power and integrated shutdown functionality.
FAQ
What is the minimum stable closed-loop gain for MAX4228EUB+?
The MAX4228EUB+ is compensated for stable operation only at closed-loop gains of +2V/V (6dB) or greater. Attempting to use it at unity gain (AV = +1) will cause severe peaking and potential oscillation due to insufficient phase margin. This is confirmed in the datasheet's Selector Guide and AC Electrical Characteristics tables, where bandwidth and THD data are explicitly specified for AV = +2V/V configurations.
Does MAX4228EUB+ support single-supply operation?
No, MAX4228EUB+ requires dual symmetric supplies ranging from ±2.85V to ±5.5V. Its input common-mode range is specified as ±2.5V with VCM = 0V, and absolute maximum ratings define VCC-to-VEE as 12V - confirming bipolar rail dependency. Single-supply use would violate input/output voltage limits and disable proper biasing of the internal current-feedback core.
What is the thermal pad connection requirement for MAX4228EUB+?
The exposed thermal pad (Pin 10) of the MAX4228EUB+ µMAX package must be soldered to a solid copper ground plane on the PCB. This connection is mandatory for thermal dissipation - the device's 444mW maximum power dissipation rating assumes 5.6mW/°C derating above +70°C, which is only achievable with low-thermal-resistance pad coupling. Leaving the pad unconnected risks junction temperature exceeding 150°C at full load.
Can MAX4228EUB+ drive 75Ω back-terminated video loads at full swing?
Yes, MAX4228EUB+ is characterized to drive ±2.5V into four simultaneously connected 75Ω back-terminated loads while maintaining specified differential gain/phase error (0.01%/0.02°) and 0.1dB gain flatness to 300MHz. This capability is explicitly stated in the Features section and validated in the DC Electrical Characteristics table under "Output Voltage Swing" and "Output Current" parameters.
How does shutdown mode affect output impedance in MAX4228EUB+?
In shutdown mode (SHDNA or SHDNB = logic low), MAX4228EUB+ places its corresponding amplifier output into a high-impedance state with typical impedance of 100kΩ, as measured under RL = 150Ω conditions. This value is confirmed in the AC Electrical Characteristics table under "Shutdown Mode Output Impedance" and enables passive analog multiplexing without external isolation switches.
MAX4228EUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 1700V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 600 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 6mA (x2 Channels)
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 5.7 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX4228EUB+ FAQ
1.How can I place an order for MAX4228EUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4228EUB+ 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 MAX4228EUB+ reliable?
The price and inventory of MAX4228EUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4228EUB+ is usually 5 days.
3.What payment methods are accepted for MAX4228EUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4228EUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4228EUB+?
MAX4228EUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4228EUB+ 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 MAX4228EUB+?
For technical support, including MAX4228EUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4228EUB+ requirements.
6.How does Aetrix verify that MAX4228EUB+ is sourced from the original manufacturer or authorized distributors?
All MAX4228EUB+ 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 MAX4228EUB+ meets industry standards.
7.What is the process for return or replacement of MAX4228EUB+?
All MAX4228EUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4228EUB+, 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 MAX4228EUB+ part is unused and in its original packaging.
Return procedure for MAX4228EUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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