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Analog Devices Inc./Maxim Integrated MAX4445ESE+
- Part No.:
- MAX4445ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Amps and Modules
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4445ESE+.pdf
- Description:
- IC AMP RECEIVER 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:514
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Product details
Overview
MAX4445ESE+ from Maxim Integrated is an ultra-high-speed, low-distortion differential-to-single-ended line receiver with enable control, designed for video and RF signal processing. It features 550MHz small-signal bandwidth, 5000V/µs slew rate, ±3.7V output swing into 100Ω, and external gain configuration (AV ≥ +2V/V) via RG pins. Used in twisted-pair to coaxial conversion and high-speed instrumentation.
For engineers reviewing the MAX4445ESE+ datasheet, MAX4445ESE+ pinout, MAX4445ESE+ application, or MAX4445ESE+ equivalent, this page delivers verified electrical parameters, real-world timing behavior, gain-setting methodology, disable-mode quiescent current (3.5mA), and validated alternatives for differential receiver selection in high-fidelity analog signal chains.
Technical Context
The MAX4445ESE+ employs a three-op-amp instrumentation amplifier architecture with symmetrical differential inputs and single-ended output, optimized for minimal distortion in wideband applications. Its current-feedback topology enables 550MHz –3dB bandwidth while sustaining 5000V/µs slew rate and <0.07% differential gain error at NTSC frequencies.
Gain is externally set via resistor between RG pins (pins 4 & 5), supporting AV = (1 + 600/RG) ≥ +2V/V; internal compensation ensures stability across this range. The enable input (pin 9) controls power-down mode, raising output impedance to ~1.8kΩ + RG and reducing IQ to 3.5mA without requiring external bias reconfiguration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 550MHz –3dB: supports baseband video and IF signals up to UHF without attenuation. |
| Slew Rate | 5000V/µs: preserves fast edge integrity for pulse and digital-modulated waveforms. |
| Output Voltage Swing | ±3.7V into 100Ω: drives standard 75Ω coax with margin when terminated properly. |
| Differential Gain/Phase Error | 0.07%/0.05° at NTSC: meets broadcast-grade video fidelity requirements. |
| Input Noise Density | 25nV/√Hz at 100kHz: minimizes added noise in low-level signal amplification paths. |
| Enable Logic Threshold | VIL = 0.8V, VIH = 2.0V: compatible with TTL and CMOS logic families. |
| Quiescent Current (Enabled) | 41–55mA: enables high-speed operation without excessive thermal load in SO-16 package. |
Pinout & Package
MAX4445ESE+ is housed in a 16-pin narrow SO (SOIC-16) package with 1.27mm pitch, rated for –40°C to +85°C operation. Thermal resistance θJA = 82°C/W enables stable performance under continuous 120mA output drive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 - VCC | Positive supply input (+5V) | Bypassed to GND with 0.1µF capacitor; powers internal op-amps and bias circuitry. |
| 3 - IN− | Inverting differential input | Accepts complementary signal leg; matched to IN+ for common-mode rejection. |
| 4, 5 - RG | External gain-setting resistor terminals | RG connected here sets closed-loop gain as AV = (1 + 600/RG); pins unconnected in MAX4444. |
| 6 - IN+ | Noninverting differential input | Primary signal input leg; forms differential pair with IN− for noise immunity. |
| 7, 8, 11–14 - VEE | Negative supply input (–5V) | Four dedicated pins reduce ground bounce and improve PSRR at high frequencies. |
| 9 - EN | Active-high enable control | Drives device into low-power mode (IQ = 3.5mA) when pulled low; output goes high-Z. |
| 10 - REF | Reference input | Connected to midpoint of ±5V supplies (0V) to establish output DC offset baseline. |
| 15 - OUT | Single-ended output | Delivers amplified difference (IN+ − IN−) × AV; capable of ±3.7V swing into 100Ω. |
| 16 - GND | Analog ground reference | Common return for REF, bypass caps, and PCB ground plane; critical for noise control. |
Key Features
| Feature | Design Value |
|---|---|
| External gain configuration (AV ≥ +2V/V) | Enables precise system-level gain tuning without redesigning feedback network layout. |
| 550MHz small-signal bandwidth | Preserves amplitude flatness across HDTV, SDI, and 100MHz IF signal bands. |
| 0.07% differential gain error | Meets SMPTE RP 168 and ITU-R BT.601 video fidelity standards for broadcast equipment. |
| Low-power enable mode (3.5mA) | Reduces system standby power without disconnecting supplies or adding external switches. |
| 120mA output drive capability | Directly drives 75Ω coax or ADC input buffers without external current boost stages. |
Applications
| Twisted-Pair to Coaxial Conversion | High-Speed Instrumentation Amplifier |
|---|---|
Use Scenario: Converting balanced LVDS or RS-422 signals over long twisted-pair cables into single-ended 75Ω coax outputs for display or digitization. IC Role / Device Role / Timing Role: Differential receiver with gain adjustment compensates for cable loss and rejects common-mode noise induced on the pair. Use Value: Maintains signal integrity up to 550MHz while enabling gain trim via RG resistor to restore nominal amplitude at destination. |
Use Scenario: Amplifying low-amplitude, high-frequency sensor outputs (e.g., piezoelectric transducers, RF detectors) in automated test equipment. IC Role / Device Role / Timing Role: Precision differential front-end with ultra-low phase/gain distortion and 5000V/µs slew rate captures transient events without slew-induced error. Use Value: Delivers sub-0.1° phase linearity and 25nV/√Hz input noise-critical for time-domain accuracy in oscilloscope and digitizer front-ends. |
| Data Acquisition Front-End | Medical Imaging Signal Chain |
Use Scenario: Conditioning differential analog outputs from high-speed ADCs or DACs before further processing or buffering. IC Role / Device Role / Timing Role: Single-ended reconstruction stage that maintains SFDR >60dBc at 5MHz and settles within 12ns to 0.1%. Use Value: Enables direct coupling to downstream 14-bit+ ADCs without additional op-amp stages, preserving dynamic range and timing resolution. |
Use Scenario: Receiving differential ultrasound beamformer outputs or MRI gradient coil feedback signals prior to digitization. IC Role / Device Role / Timing Role: Low-noise, low-distortion receiver ensuring faithful reproduction of µV-level echo signals with minimal harmonic corruption. Use Value: Achieves –60dB SFDR at 5MHz and 0.05° differential phase-essential for maintaining spatial resolution and contrast fidelity in diagnostic imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential-to-single-ended receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4561DGNR | Lower bandwidth (320MHz), higher input bias current (1.2µA), no enable pin; uses voltage-feedback architecture. | Limited to ≤300MHz systems; unsuitable where MAX4445ESE+'s 550MHz flatness or enable-controlled power gating is required. | Select THS4561DGNR only if cost sensitivity outweighs bandwidth and power-control needs. |
| ADA4899-1ARZ | Single-ended input only; no differential input stage or enable function; 740MHz bandwidth but fixed +1V/V gain unless external feedback added. | Cannot replace MAX4445ESE+ in differential-input configurations without external front-end resistive network, increasing noise and mismatch risk. | Choose ADA4899-1ARZ only for single-ended source amplification where differential rejection is unnecessary. |
Compared with THS4561DGNR and ADA4899-1ARZ, the MAX4445ESE+ uniquely combines differential input architecture, 550MHz bandwidth, external gain flexibility, and integrated enable control-making it irreplaceable in high-fidelity, power-aware differential receiver designs.
Availability
MAX4445ESE+ is available at Aetrix Electronics and suitable for video infrastructure, RF test equipment, and medical imaging systems requiring stable component supply across extended production lifecycles.
Supply support for MAX4445ESE+ 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 medical applications.
The MAX4444/MAX4445 product line targets ultra-high-speed signal conditioning in video, instrumentation, and data acquisition-emphasizing low distortion, wide bandwidth, and robust differential interface capability.
FAQ
What is the minimum stable gain for MAX4445ESE+ and how is it set?
The MAX4445ESE+ is compensated for closed-loop gains of +2V/V or greater. Gain is set by connecting a resistor (RG) between pins 4 and 5, using the formula AV = (1 + 600/RG). For example, a 300Ω resistor yields AV = +3V/V. This external configuration allows precise system-level gain calibration without modifying PCB layout-unlike the fixed-gain MAX4444ESE+. The MAX4445ESE+ remains stable across its supported gain range without additional compensation components.
How does the enable function affect output behavior in MAX4445ESE+?
When the EN pin (pin 9) of the MAX4445ESE+ is pulled low, the device enters low-power disable mode, reducing quiescent current to 3.5mA. During disable, the output transitions to a high-impedance state with ROUT(OFF) ≈ 1.8kΩ + RG. This prevents loading of downstream circuitry and eliminates DC path conflicts. The MAX4445ESE+ resumes full operation within 80ns after EN returns high, making it suitable for burst-mode or power-gated signal paths in test equipment and portable instruments.
Can MAX4445ESE+ drive 75Ω coaxial cable directly, and what layout considerations apply?
Yes-the MAX4445ESE+ delivers ±3.7V into 100Ω and can directly drive 75Ω coaxial cable with appropriate termination. To maintain signal integrity, use a series isolation resistor (RISO) of 10–22Ω at the output per Maxim's recommended design (Figure 2), especially with >100pF capacitive loads. Layout must include a solid ground plane, 0.1µF surface-mount bypass capacitors on VCC and VEE pins, and avoid 90° trace bends. These practices minimize ringing and preserve the MAX4445ESE+'s 550MHz bandwidth and 0.05° phase linearity.
What is the differential input voltage range and common-mode range for MAX4445ESE+?
The MAX4445ESE+ supports a differential input voltage range (VDIFF) of ±3.4V and an input common-mode voltage range (VCM) of –2.9V to +2.9V when operated on ±5V supplies. This allows compatibility with standard differential signaling levels including LVDS and proprietary high-swing interfaces. The wide VCM range ensures robust operation even with imperfect common-mode balance on twisted-pair lines-critical for maintaining CMRR >55dB across frequency and temperature in real-world video and instrumentation deployments.
How does MAX4445ESE+ compare to MAX4444ESE+ in terms of gain flexibility and application fit?
The MAX4445ESE+ differs from the MAX4444ESE+ by offering externally configurable gain (AV ≥ +2V/V via RG pins), whereas the MAX4444ESE+ has a fixed +2V/V gain. Both share identical bandwidth (550MHz), slew rate (5000V/µs), and enable functionality. Use the MAX4445ESE+ when system-level gain trimming, cable-loss compensation, or multi-range scaling is required; choose the MAX4444ESE+ only for cost-sensitive, fixed-gain applications where external resistor placement and tolerance effects are undesirable. Pin compatibility allows drop-in substitution where gain flexibility isn't needed.
MAX4445ESE+ 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:
- Active
- Applications:
- Receiver
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- 550 MHz
- Slew Rate:
- 3800V/µs
- Current - Supply:
- 41 mA
- Current - Output / Channel:
- 120 mA
- Voltage - Supply, Single/Dual (±):
- ±4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-SOIC
MAX4445ESE+ FAQ
1.How can I place an order for MAX4445ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4445ESE+ 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 MAX4445ESE+ reliable?
The price and inventory of MAX4445ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4445ESE+ is usually 5 days.
3.What payment methods are accepted for MAX4445ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4445ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4445ESE+?
MAX4445ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4445ESE+ 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 MAX4445ESE+?
For technical support, including MAX4445ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4445ESE+ requirements.
6.How does Aetrix verify that MAX4445ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX4445ESE+ 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 MAX4445ESE+ meets industry standards.
7.What is the process for return or replacement of MAX4445ESE+?
All MAX4445ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4445ESE+, 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 MAX4445ESE+ part is unused and in its original packaging.
Return procedure for MAX4445ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4445ESE+ Tags
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