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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:2,989
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Product details
Overview
MAX4448ESE+ from Maxim Integrated is a high-speed, current-feedback single-ended-to-differential line driver IC optimized for xDSL, video, and RF signal transmission. It delivers 330MHz small-signal bandwidth, +2V/V minimum gain (externally adjustable), 6500V/µs slew rate (typical at full swing), and ±6.2V differential output swing into 50Ω with ±5V supplies. Its enable pin supports low-power mode (<5.5mA quiescent current) and high-impedance outputs.
For engineers reviewing the MAX4448ESE+ datasheet, MAX4448ESE+ pinout, MAX4448ESE+ application, or MAX4448ESE+ equivalent, key selection criteria include gain configurability via external resistor RG, differential gain/phase accuracy (0.01%/0.02°), ultra-low noise (23nV/√Hz), 130mA output drive capability, and SOIC-16 narrow-body packaging compatible with high-density PCB layouts.
Technical Context
The MAX4448ESE+ employs current-feedback amplifier (CFA) architecture to achieve wide bandwidth and fast settling-8ns to 0.1% with 2V step input. Its internal compensation ensures stability at minimum gains of +2V/V, while external RG resistor enables precise gain tuning per the formula Gain = 2 × (1 + 300/RG).
It features active-high TTL-compatible enable (EN), dual ±5V supply operation, and robust output short-circuit protection (140mA typical). The device maintains excellent differential linearity across frequency-200MHz 0.1dB gain flatness is not specified for MAX4448 (only MAX4447), but its 330MHz small-signal bandwidth and -78dB SFDR at 100kHz support high-fidelity analog transmission in demanding communication links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 330MHz - defines usable frequency range for low-distortion amplification of small AC signals (e.g., baseband video or DSL upstream tones) |
| Slew Rate | 6500V/µs - enables faithful reproduction of fast edges (e.g., digital pulses or composite video sync) without slew-induced distortion |
| Output Drive Current | 130mA - supports driving heavy loads including 50Ω coaxial lines and twisted-pair cables with minimal droop |
| Differential Output Swing | ±6.2V into 50Ω - delivers full-scale differential signaling for high dynamic range over lossy media |
| Input Noise Voltage Density | 23nV/√Hz at 1MHz - preserves SNR in sensitive receiver front-ends and ADC driver stages |
| Enable Logic Threshold | VIH = 2V, VIL = 0.8V - ensures reliable interfacing with standard 3.3V/5V logic without level-shifting |
| Quiescent Current (Enabled) | 46–55mA - determines thermal load and power budget in always-on line driver applications |
Pinout & Package
MAX4448ESE+ is housed in a 16-pin narrow SOIC (SOICN) package with 1.27mm pitch, JEDEC MS-012AC compliant, suitable for automated assembly and high-frequency layout practices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 1, 2) | Positive supply rail | Bypass with 0.1µF capacitor to GND; supports +4.5V to +5.5V operation |
| IN (Pin 5) | Noninverting input | Single-ended signal entry point; high-impedance node requiring controlled-impedance trace routing |
| RG (Pin 4) | External gain-set terminal | Connect resistor to GND to configure gain ≥+2V/V; unused on MAX4447 |
| EN (Pin 9) | Active-high enable control | Drives outputs to high-Z and reduces IQ to <5.5mA when pulled low |
| OUT+ (Pin 10) | Differential positive output | Delivers inverted complement of OUT−; matched impedance critical for common-mode rejection |
| OUT− (Pin 15) | Differential negative output | Complementary output to OUT+; both pins must be routed symmetrically for optimal balance |
| VEE (Pins 7, 8, 11–14) | Negative supply rail | Bypass with 0.1µF capacitor to GND; supports −4.5V to −5.5V operation |
| GND (Pin 16) | Analog ground reference | Primary return path for bias currents; must connect directly to solid ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Externally adjustable gain | Configurable ≥+2V/V using single resistor RG - enables system-level gain optimization without redesigning feedback network |
| High-output-current drive | 130mA continuous - sustains full differential swing into 50Ω loads, eliminating need for external buffer stages |
| Ultra-low differential distortion | 0.01% differential gain error / 0.02° phase error - preserves color fidelity and timing integrity in broadcast video systems |
| Fast enable/disable response | 55ns enable time, 0.5µs disable time - supports burst-mode transmission and power-gating in energy-sensitive DSL modems |
| Current-feedback architecture | 330MHz bandwidth with stable +2V/V minimum gain - provides superior transient response vs. voltage-feedback alternatives at comparable power |
Applications
| Video Line Driver | xDSL Transmitter |
|---|---|
Use Scenario: Driving analog RGB or YPbPr video signals over 75Ω coaxial cable to remote displays or distribution amplifiers. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and level shifter that enhances noise immunity and extends reach beyond 100m. Use Value: Maintains NTSC/PAL differential gain/phase specs (0.01%/0.02°) and delivers ±6.2V swing to overcome cable attenuation without post-amplification. |
Use Scenario: Transmitting upstream/downstream ADSL/VDSL signals across twisted-pair telephone lines in CPE modems. IC Role / Device Role / Timing Role: High-linearity differential line driver providing programmable gain and fast settling for multi-tone QAM modulation. Use Value: Supports >330MHz bandwidth and -78dBc SFDR at 100kHz, meeting ITU-T G.992.x spectral mask requirements for upstream channels. |
| Differential ADC Driver | RF Signal Conditioning |
Use Scenario: Conditioning single-ended IF or baseband signals before digitization by high-speed differential-input ADCs (e.g., 12–14-bit, 100+ MSPS). IC Role / Device Role / Timing Role: Wideband gain block with low noise and precise DC offset control to maximize ENOB and SFDR. Use Value: 23nV/√Hz input noise and 8ns 0.1% settling ensure minimal degradation of ADC effective resolution in communications receivers. |
Use Scenario: Amplifying and balancing LO or IF signals in direct-conversion transceivers or spectrum analyzers. IC Role / Device Role / Timing Role: Low-phase-noise, high-isolation differential driver enabling clean signal injection into mixers or filters. Use Value: Excellent PSRR (>75dB) and differential balance suppress common-mode feedthrough, reducing spurious emissions in RF front-ends. |
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; 430MHz small-signal bandwidth; no RG pin | Better suited for fixed-gain, highest-bandwidth video drivers where gain adjustment is unnecessary | Select MAX4447ESE+ when design requires maximum bandwidth and simplified layout (no external resistor needed) |
| MAX4449ESE+ | Minimum +5V/V gain; 400MHz small-signal bandwidth; higher gain stability at elevated frequencies | Preferred for high-gain DSL line drivers needing improved harmonic suppression above 100MHz | Select MAX4449ESE+ when system gain >+5V/V is required and higher fundamental-to-harmonic ratio is critical |
Compared with MAX4447ESE+ and MAX4449ESE+, the MAX4448ESE+ offers the optimal trade-off between gain flexibility (+2V/V min), bandwidth (330MHz), and layout simplicity-making it ideal for cost-sensitive, medium-gain xDSL and industrial video interfaces where external gain tuning adds value without complexity.
Availability
MAX4448ESE+ is available at Aetrix Electronics and suitable for xDSL modems, broadcast video equipment, high-speed data acquisition systems, and RF test instrumentation requiring stable component supply across extended temperature ranges (-40°C to +85°C).
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, mixed-signal, and RF ICs for communications, computing, and industrial markets.
The MAX4447/MAX4448/MAX4449 family was designed specifically for high-fidelity, high-speed differential transmission in broadband access and professional video infrastructure-emphasizing linearity, speed, and robust output drive under real-world loading conditions.
FAQ
What is the minimum stable gain configuration for MAX4448ESE+?
The MAX4448ESE+ is internally compensated for stable operation at a minimum closed-loop gain of +2V/V. This is achieved using an external resistor (RG) connected between Pin 4 (RG) and GND. The gain equation is Gain = 2 × (1 + 300/RG), where RG ≥ ∞ yields +2V/V. Lower RG values increase gain, but stability is guaranteed only at +2V/V and above.
Does MAX4448ESE+ support dual-supply operation?
Yes, MAX4448ESE+ operates from split supplies: VCC = +4.5V to +5.5V and VEE = −4.5V to −5.5V. This ±5V nominal configuration enables symmetrical ±6.2V differential output swing into 50Ω, essential for balanced transmission over twisted-pair or coaxial media without DC blocking capacitors.
How does the enable function affect output state in MAX4448ESE+?
When EN (Pin 9) is pulled low (≤0.8V), MAX4448ESE+ enters low-power mode: quiescent current drops below 5.5mA and both OUT+ and OUT− outputs enter a high-impedance state. This allows safe multiplexing or power gating in multi-channel systems without signal contention or loading on downstream circuitry.
What is the differential gain and phase accuracy of MAX4448ESE+?
MAX4448ESE+ achieves 0.01% differential gain error and 0.02° differential phase error-measured under NTSC conditions with 150Ω load. These values reflect exceptional amplitude and timing matching between OUT+ and OUT− paths, making the device suitable for broadcast-quality video line driving where color fidelity and sync integrity are critical.
Can MAX4448ESE+ drive capacitive loads directly?
MAX4448ESE+ can drive moderate capacitive loads, but large capacitances (>15pF) may cause peaking or instability due to reduced phase margin. For loads exceeding 15pF, a small series isolation resistor (e.g., 14Ω) placed at each output improves stability-though it introduces minor gain error and requires careful PCB layout to preserve differential balance.
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:
- Last Time Buy
- 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
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