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Analog Devices Inc./Maxim Integrated MAX4448ESE
- Part No.:
- MAX4448ESE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Amps and Modules
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4448ESE.pdf
- Description:
- IC AMP DRIVER 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
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Product details
Overview
The MAX4448ESE from Maxim Integrated is a high-speed, current-feedback single-ended-to-differential line driver optimized for xDSL, video, and RF signal transmission. It delivers 330MHz small-signal bandwidth, ±6.2V differential output swing into 50Ω, 130mA output drive current, and supports externally set gain ≥+2V/V via RG pin. It operates from ±5V supplies and features active-high TTL-compatible enable (EN) for low-power mode.
For engineers reviewing the MAX4448ESE datasheet, MAX4448ESE pinout, MAX4448ESE application, or MAX4448ESE equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with precise functional and selection distinctions.
Technical Context
The MAX4448ESE uses current-feedback amplifier (CFA) architecture to achieve wide bandwidth and high slew rate (up to 5700V/µs), enabling fast settling (8ns to 0.1%) and stable operation at minimum gain +2V/V. Its internal compensation ensures stability without external components when configured for ≥+2V/V gain using the RG terminal.
It integrates dual high-current output stages capable of driving 50Ω differential loads with ultra-low differential gain/phase error (0.01%/0.02°) and 23nV/√Hz input voltage noise at 1MHz - critical for NTSC video fidelity and high-SFDR RF transmission up to 100MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 330MHz - defines usable frequency range for low-distortion amplification of baseband video or broadband data signals |
| Slew Rate | 5700V/µs - enables faithful reproduction of fast-edged digital or composite video waveforms without slewing distortion |
| Differential Output Swing | ±6.2V into 50Ω - supports full-scale signaling over twisted-pair lines with headroom for cable loss compensation |
| Output Drive Current | 130mA - sufficient to drive heavy capacitive loads and maintain signal integrity across long traces or cables |
| Gain Configuration | ≥+2V/V via external RG resistor - allows flexible system-level gain tuning without redesigning feedback networks |
| Enable Function | Active-high TTL-compatible EN pin - reduces quiescent current to <5.5mA and places outputs in high-Z state for power-gating |
| Input Noise Density | 23nV/√Hz at 1MHz - preserves SNR in sensitive RF front-end or high-resolution ADC driver applications |
Pinout & Package
MAX4448ESE is housed in a 16-pin narrow SOIC (SOICN) package with exposed pad not present; thermal performance relies on PCB copper area under the body per Maxim's layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 1,2) | Positive supply input | Bypassed with 0.1µF capacitor to GND; supplies current for both output stages and internal bias circuitry |
| IN (Pin 5) | Noninverting input | Single-ended signal entry point; high-impedance node requiring controlled-impedance trace routing |
| RG (Pin 4) | External gain-set resistor connection | Connects to GND via RGAIN to configure gain = 2×(1 + 300/RGAIN); determines minimum stable gain |
| EN (Pin 9) | Enable control input | TTL-compatible logic input; high = active operation, low = 3.2mA quiescent mode with high-Z outputs |
| OUT+ (Pin 10) | Differential positive output | Drives one side of balanced load; requires matched trace length and impedance to OUT− for common-mode rejection |
| OUT− (Pin 15) | Differential negative output | Complementary output to OUT+; forms true differential pair essential for EMI immunity and noise rejection |
| VEE (Pins 7,8,11,12,13,14) | Negative supply input | Bypassed with 0.1µF capacitor to GND; shared across multiple internal stages to minimize ground bounce |
| GND (Pin 16) | Analog ground reference | Primary return path for input bias currents and output load currents; must connect directly to solid ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables 330MHz bandwidth and 5700V/µs slew rate without sacrificing stability at +2V/V gain |
| Externally programmable gain | Supports ≥+2V/V via RG pin - allows optimization for specific cable loss or ADC input range without changing IC |
| Low-power enable mode | Reduces ICC to 3.2mA and disables outputs to high-Z - essential for power-managed systems and hot-swap interfaces |
| Ultra-low differential distortion | 0.01% gain error and 0.02° phase error preserve color fidelity in NTSC/PAL video transmission paths |
| High-output current drive | 130mA per output supports direct driving of 50Ω coaxial or twisted-pair lines without external buffers |
Applications
| DSL Line Driver | Video Differential Transmitter |
|---|---|
Use Scenario: Driving ADSL/VDSL signals over Category 3/5 twisted-pair telephone lines with >1MHz bandwidth requirements. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and line driver providing gain, common-mode rejection, and robust output drive. Use Value: Enables full-duplex high-speed data transmission by maintaining signal integrity across long copper runs with minimal echo and crosstalk. |
Use Scenario: Transmitting analog RGB or Y/C video signals from FPGA or video processor to remote display over shielded twisted-pair. IC Role / Device Role / Timing Role: High-fidelity differential transmitter ensuring accurate amplitude and phase matching between complementary outputs. Use Value: Eliminates ground-loop noise and improves EMI immunity while preserving 0.01%/0.02° differential gain/phase accuracy for broadcast-quality video. |
| RF Signal Chain Driver | High-Speed ADC Front-End |
Use Scenario: Conditioning IF or baseband signals in wireless infrastructure equipment before upconversion or filtering stages. IC Role / Device Role / Timing Role: Wideband differential driver delivering low-noise, low-distortion excitation to mixer or filter inputs. Use Value: Achieves −78dBc SFDR at 100kHz and −62dBc at 100MHz - critical for maintaining adjacent-channel power ratio in LTE/WiFi transceivers. |
Use Scenario: Driving the differential input of a 12–14-bit, 100+ MSPS ADC in test instrumentation or medical imaging systems. IC Role / Device Role / Timing Role: Precision differential amplifier providing gain, level-shifting, and drive capability matched to ADC input specifications. Use Value: Delivers 8ns settling to 0.1% and 23nV/√Hz noise - preserves ENOB and dynamic range without degrading effective resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-ended-to-differential line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4447ESE | Fixed +2V/V gain, higher 430MHz bandwidth, no RG pin or external gain adjustment | Better suited for fixed-gain, highest-bandwidth video or test equipment where gain flexibility is unnecessary | Select MAX4447ESE when gain stability and maximum small-signal bandwidth outweigh need for tunability |
| MAX4449ESE | Higher 400MHz bandwidth, minimum +5V/V gain, RG pin supports ≥+5V/V configurations | Preferred for high-gain RF IF stages or applications requiring greater voltage swing amplification before transmission | Select MAX4449ESE when system demands ≥+5V/V gain and improved large-signal response at 400MHz |
Compared with MAX4447ESE and MAX4449ESE, the MAX4448ESE uniquely balances 330MHz bandwidth, externally adjustable ≥+2V/V gain, and proven performance in xDSL line drivers - making it the optimal choice for cost-sensitive, gain-flexible broadband access designs.
Availability
MAX4448ESE is available at Aetrix Electronics and suitable for DSL line drivers, video differential transmitters, RF signal chain drivers, and high-speed ADC front-ends requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for MAX4448ESE 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 and mixed-signal ICs for communications, industrial, and consumer applications.
The MAX4447/MAX4448/MAX4449 family was designed specifically for high-speed differential transmission in broadband access and video infrastructure - emphasizing bandwidth, output drive, and differential fidelity over general-purpose op-amp traits.
FAQ
What is the minimum stable gain configuration for the MAX4448ESE?
The MAX4448ESE is internally compensated for stable operation at minimum gain of +2V/V. Gain is set externally using a resistor (RGAIN) from the RG pin to GND, where Gain = 2 × (1 + 300/RGAIN). This allows precise gain tuning above +2V/V without compromising phase margin or causing oscillation.
Does the MAX4448ESE support differential input, or only single-ended input?
The MAX4448ESE accepts only single-ended input at the IN pin (Pin 5). It converts that single-ended signal into a fully differential output pair at OUT+ (Pin 10) and OUT− (Pin 15). It does not have a dedicated inverting input; differential input functionality requires external circuitry or a different device such as a fully differential amplifier.
What is the purpose of the multiple VEE pins on the MAX4448ESE?
The MAX4448ESE has six VEE pins (7,8,11,12,13,14) to reduce power-supply impedance and improve high-frequency PSRR. Distributing the negative supply return across multiple pins lowers inductance and minimizes ground bounce during fast output transitions - critical for maintaining signal integrity at 330MHz bandwidth and 5700V/µs slew rate.
Can the MAX4448ESE drive a 75Ω coaxial load directly?
Yes, the MAX4448ESE can drive a 75Ω differential load, though output swing is reduced versus 50Ω. At ±5V supplies, it delivers ±6.2V into 50Ω (12.4Vpp); into 75Ω, typical differential swing remains >±5.5V (11Vpp) with acceptable distortion. For optimal 75Ω matching, use series termination or consider impedance-matching network per Maxim's application notes.
How does the enable (EN) pin affect output behavior in low-power mode?
When EN is pulled low, the MAX4448ESE enters low-power mode: quiescent current drops to 3.2mA and both OUT+ and OUT− are placed in a high-impedance (Hi-Z) state - effectively disconnecting the driver from the load. This prevents signal contention and back-driving in multi-drop or shared-bus configurations, and eliminates static power draw in idle channels.
MAX4448ESE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Driver
- Output Type:
- Differential
- Number of Circuits:
- 1
- -3db Bandwidth:
- 330 MHz
- Slew Rate:
- 4300V/µs
- Current - Supply:
- 46 mA
- Current - Output / Channel:
- 130 mA
- Voltage - Supply, Single/Dual (±):
- ±4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-SOIC
MAX4448ESE FAQ
1.How can I place an order for MAX4448ESE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4448ESE 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 MAX4448ESE reliable?
The price and inventory of MAX4448ESE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4448ESE is usually 5 days.
3.What payment methods are accepted for MAX4448ESE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4448ESE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4448ESE?
MAX4448ESE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4448ESE 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 MAX4448ESE?
For technical support, including MAX4448ESE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4448ESE requirements.
6.How does Aetrix verify that MAX4448ESE is sourced from the original manufacturer or authorized distributors?
All MAX4448ESE 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 MAX4448ESE meets industry standards.
7.What is the process for return or replacement of MAX4448ESE?
All MAX4448ESE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4448ESE, 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 MAX4448ESE part is unused and in its original packaging.
Return procedure for MAX4448ESE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4448ESE Tags
-
LT6552CS8#PBF
Analog Devices Inc.
-
LT6205IS5#TRPBF
Analog Devices Inc.
-
LT6206IMS8#TRPBF
Analog Devices Inc.
-
LT6552CDD#PBF
Analog Devices Inc.
-
LT6552IS8#PBF
Analog Devices Inc.
-
LT1252CS8#PBF
Analog Devices Inc.
-
AD818ARZ-REEL7
Analog Devices Inc.
-
MAX4310EUA+
Analog Devices Inc./Maxim Integrated
-
AD829ARZ
Analog Devices Inc.
-
AD810ARZ
Analog Devices Inc.
-
MAX4310ESA+
Analog Devices Inc./Maxim Integrated
-
MAX4313ESA+
Analog Devices Inc./Maxim Integrated
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