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Analog Devices Inc./Maxim Integrated MAX4449ESE
- Part No.:
- MAX4449ESE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Amps and Modules
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4449ESE.pdf
- Description:
- IC AMP DRIVER 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,537
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Product details
Overview
MAX4449ESE from Maxim Integrated is a high-speed, current-feedback single-ended-to-differential line driver optimized for RF and video signal transmission. It delivers 400MHz small-signal bandwidth, 6500V/µs slew rate, ±6.2V differential output swing into 50Ω, and supports +5V/V minimum gain via external resistor RG. It is used in xDSL transmitters and differential ADC driver stages requiring low distortion and fast settling.
For engineers reviewing the MAX4449ESE datasheet, MAX4449ESE pinout, MAX4449ESE application, or MAX4449ESE equivalent, key selection criteria include its 400MHz small-signal bandwidth, +5V/V minimum gain configuration, 8ns 0.1% settling time, ultra-low 23nV/√Hz input noise, and enable-controlled high-impedance output state.
Technical Context
The MAX4449ESE employs current-feedback amplifier (CFA) architecture to achieve wide bandwidth and high slew rate without sacrificing stability at minimum gain of +5V/V. Its internal compensation ensures unity-gain stability only when configured with ≥+5V/V gain using external RG resistor.
It features active-high TTL-compatible enable (EN), allowing low-power mode (<5.5mA quiescent current) with outputs placed in high-impedance state. The device operates from ±5V supplies and drives 50Ω differential loads with excellent differential gain/phase accuracy (0.01%/0.02°) and -78dBc SFDR at 100kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 400MHz - defines usable frequency range for linear amplification of low-amplitude signals |
| Slew Rate | 6500V/µs - enables faithful reproduction of fast-edged signals up to ~100MHz fundamental | Min Stable Gain | +5V/V - requires external RG ≤200Ω; ensures phase margin >45° under load |
| Differential Output Swing | ±6.2V into 50Ω - supports full-scale drive for 75Ω/100Ω twisted-pair and coaxial interfaces |
| Settling Time (0.1%) | 8ns - critical for high-speed data transmission and sampling system timing integrity |
| Input Noise Density | 23nV/√Hz at 1MHz - preserves SNR in wideband receiver front-ends and ADC driver paths |
| Spurious-Free Dynamic Range | -78dBc at 100kHz - indicates low harmonic and intermodulation distortion in baseband applications |
Pinout & Package
MAX4449ESE is housed in a 16-pin narrow SOIC (SOICN) package with exposed pad not present; JEDEC MS-012AC compliant. Thermal resistance θJA = 100°C/W (typical).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pins 1,2) | Positive supply rail | Connect to +5V with local 0.1µF ceramic bypass to GND; dual pins reduce inductance |
| VEE (Pins 7,8,11–14) | Negative supply rail | Connect to -5V with local 0.1µF ceramic bypass; multiple pins lower impedance path |
| IN (Pin 5) | Noninverting input | Single-ended signal entry point; high-impedance node (50kΩ typical) for source termination |
| RG (Pin 4) | Gain-set resistor connection | Connect external resistor to GND to set gain = 2×(1 + 300/RG); required for stable +5V/V operation |
| OUT+ (Pin 10) | Positive differential output | Delivers inverted complement of OUT-; matched delay and amplitude critical for common-mode rejection |
| OUT- (Pin 15) | Negative differential output | Complementary output referenced to OUT+; both outputs must be terminated differentially |
| EN (Pin 9) | Enable control input | TTL-compatible active-high; pulls outputs to high-Z and reduces IQ to <5.5mA when low |
| GND (Pin 16) | Analog ground reference | Primary return path for bias currents and feedback; connect directly to solid ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables 400MHz bandwidth and 6500V/µs slew rate while maintaining stability at +5V/V gain |
| External gain configuration | Supports ≥+5V/V via RG resistor; eliminates need for fixed-gain variants in multi-voltage designs |
| Enable-controlled power-down | Reduces quiescent current to <5.5mA and places outputs in high-Z-critical for TDD systems and power gating |
| Low differential gain/phase error | 0.01%/0.02° - preserves color fidelity and timing integrity in NTSC/PAL video and high-speed serial links |
| High output current drive | 130mA per output - sustains ±6.2V swing into 50Ω load without clipping or droop |
Applications
| Differential Line Driver | xDSL Transmitter |
|---|---|
Use Scenario: Driving 100m twisted-pair telephone lines in ADSL2+ line cards with 2.2MHz upstream bandwidth. IC Role / Device Role / Timing Role: Single-ended-to-differential conversion and level-shifting stage before line transformer coupling. Use Value: 400MHz bandwidth accommodates spectral shaping filters; ±6.2V swing meets ITU-T G.992.5 line voltage requirements. | Use Scenario: Transmitting QAM-modulated symbols over copper pairs in DSLAM central office equipment. IC Role / Device Role / Timing Role: Final-stage analog transmit driver with precise gain control and low group delay variation. Use Value: 0.01% differential gain error prevents constellation rotation; -78dBc SFDR maintains EVM <3% at 21MHz. |
| Differential ADC Driver | RF Signal Processing |
Use Scenario: Conditioning IF signals (up to 120MHz) prior to sampling by 14-bit, 125MSPS ADCs in software-defined radios. IC Role / Device Role / Timing Role: Wideband, low-noise buffer that matches ADC input impedance and rejects common-mode noise. Use Value: 23nV/√Hz input noise contributes <0.8 LSB RMS noise; 8ns settling ensures aperture jitter <50fs. | Use Scenario: Amplifying and converting single-ended LO or IF signals in microwave transceivers (e.g., 700MHz–2.7GHz bands). IC Role / Device Role / Timing Role: High-linearity, broadband differential driver feeding balanced mixers or baluns. Use Value: -62dBc 2nd harmonic at 100MHz enables clean spectrum; 130mA drive supports 50Ω active balun loads. |
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 |
|---|---|---|---|
| THS4561DGNR | 3.3V single-supply operation; 1.8GHz GBW; no enable pin; 3.5nV/√Hz noise | Optimized for low-voltage portable RF front-ends, not ±5V industrial line drivers | Select when operating from 3.3V and requiring higher bandwidth than 400MHz |
| LMH5401RTVT | 1.2GHz bandwidth; 10,000V/µs slew rate; differential inputs; no internal compensation | Requires external feedback network; suited for custom high-fidelity instrumentation, not drop-in replacement | Select when designing new high-speed test equipment needing >1GHz flat response |
Compared with THS4561DGNR and LMH5401RTVT, the MAX4449ESE uniquely balances ±5V operation, integrated enable, guaranteed +5V/V stability, and proven performance in xDSL infrastructure-making it optimal for legacy and cost-sensitive telecom line card upgrades.
Availability
MAX4449ESE is available at Aetrix Electronics and suitable for xDSL line cards, video broadcast equipment, RF test instrumentation, and high-speed data acquisition systems requiring stable component supply across extended temperature ranges (-40°C to +85°C).
Supply support for MAX4449ESE 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 industrial, communications, and computing markets.
The MAX4447/MAX4448/MAX4449 family was designed specifically for high-speed differential signaling in telecom infrastructure-emphasizing bandwidth, output drive, and differential fidelity over general-purpose op-amp versatility.
FAQ
What is the minimum stable gain configuration for MAX4449ESE?
The MAX4449ESE is internally compensated for stable operation only at minimum gain of +5V/V, achieved by connecting an external resistor RG between Pin 4 (RG) and GND. RG must be ≤200Ω to satisfy this condition. Using lower gains risks instability and peaking in frequency response. This differs from the MAX4448ESE (+2V/V min) and MAX4447ESE (fixed +2V/V). The MAX4449ESE datasheet specifies gain = 2 × (1 + 300/RG) for precise setting.
Does MAX4449ESE support single-supply operation?
No, MAX4449ESE requires dual ±5V supplies (VCC = +5V, VEE = -5V) for specified performance. Its input common-mode range extends from -4.5V to +4.5V, and output swing reaches ±6.2V into 50Ω-both dependent on symmetric rails. Operation from 0V to +10V or other single-supply configurations is not characterized or guaranteed; attempting it may cause clipping, distortion, or damage due to absolute maximum rating violations on IN, EN, or output pins.
How does the enable (EN) pin affect MAX4449ESE output state?
When EN is logic low (≤0.8V), the MAX4449ESE enters low-power mode: quiescent current drops below 5.5mA and both OUT+ and OUT- terminals enter high-impedance state-effectively disconnecting the driver from the load. When EN is logic high (≥2V), normal operation resumes with full bandwidth and drive capability. This behavior is confirmed in DC electrical characteristics tables and typical operating curves (TOC35), and applies identically across all three variants (MAX4447/4448/4449).
What is the differential gain/phase performance of MAX4449ESE at NTSC frequencies?
The MAX4449ESE achieves 0.01% differential gain error and 0.02° differential phase error under NTSC conditions (RL = 150Ω), as measured per standard video test methods. These values are identical to those specified for MAX4447ESE and MAX4448ESE in the "Differential Gain and Phase" plots (TOC20–TOC22) and confirm suitability for broadcast-quality analog video distribution and digitization. Performance holds across -40°C to +85°C temperature range.
Can MAX4449ESE drive 75Ω coaxial cables directly?
Yes, MAX4449ESE can drive 75Ω coaxial cables directly when configured for differential termination: connect OUT+ and OUT- to opposite ends of a 75Ω cable with proper 75Ω source and load terminations. Its ±6.2V differential swing into 50Ω implies ~±7.4V into 75Ω (calculated from P = V²/R), well within output voltage limits. Layout best practices-short traces, ground plane, and 0.1µF bypassing-are essential to preserve signal integrity above 100MHz, as validated in typical pulse response figures (TOC15, TOC18).
MAX4449ESE 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:
- 400 MHz
- Slew Rate:
- 6500V/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
MAX4449ESE FAQ
1.How can I place an order for MAX4449ESE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4449ESE 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 MAX4449ESE reliable?
The price and inventory of MAX4449ESE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4449ESE is usually 5 days.
3.What payment methods are accepted for MAX4449ESE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4449ESE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4449ESE?
MAX4449ESE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4449ESE 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 MAX4449ESE?
For technical support, including MAX4449ESE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4449ESE requirements.
6.How does Aetrix verify that MAX4449ESE is sourced from the original manufacturer or authorized distributors?
All MAX4449ESE 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 MAX4449ESE meets industry standards.
7.What is the process for return or replacement of MAX4449ESE?
All MAX4449ESE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4449ESE, 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 MAX4449ESE part is unused and in its original packaging.
Return procedure for MAX4449ESE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4449ESE Tags
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LT6552CS8#PBF
Analog Devices Inc.
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LT6205IS5#TRPBF
Analog Devices Inc.
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LT6206IMS8#TRPBF
Analog Devices Inc.
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LT6552CDD#PBF
Analog Devices Inc.
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LT6552IS8#PBF
Analog Devices Inc.
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LT1252CS8#PBF
Analog Devices Inc.
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AD818ARZ-REEL7
Analog Devices Inc.
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MAX4310EUA+
Analog Devices Inc./Maxim Integrated
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AD829ARZ
Analog Devices Inc.
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AD810ARZ
Analog Devices Inc.
-
MAX4310ESA+
Analog Devices Inc./Maxim Integrated
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MAX4313ESA+
Analog Devices Inc./Maxim Integrated
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