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Analog Devices Inc./Maxim Integrated MAX3664ESA+
- Part No.:
- MAX3664ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Amplifiers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX3664ESA+.pdf
- Description:
- IC TRANSIMPEDANCE AMP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,492
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Product details
Overview
MAX3664ESA+ from Maxim Integrated is a 622Mbps transimpedance preamplifier IC designed for SDH/SONET optical receivers, operating from a single +3.3V supply with 55nARMS input-referred noise, 6kΩ transimpedance gain, and 590MHz bandwidth. It converts photodiode current to differential voltage while minimizing pulse-width distortion via integrated DC cancellation.
For engineers reviewing the MAX3664ESA+ datasheet, MAX3664ESA+ pinout, MAX3664ESA+ application, or MAX3664ESA+ equivalent, key selection criteria include input noise performance at 470MHz bandwidth, differential 100Ω load drive capability, 85mW power consumption, and compatibility with the MAX3675 clock recovery IC in 3.3V receiver front-ends.
Technical Context
The MAX3664ESA+ integrates a shunt-feedback transimpedance amplifier, paraphase stage for single-ended-to-differential conversion (×2 voltage gain), and a user-configurable DC cancellation loop using the COMP pin. Its architecture targets low-jitter, high-sensitivity fiber-optic reception by centering signal swing within dynamic range and suppressing baseline wander.
It features emitter-follower output drivers with internal 60Ω back-termination per side, optimized for driving 100Ω differential loads. The device's noise floor, bandwidth, and pulse-width distortion (≤200ps) are tightly specified across -40°C to +85°C, with performance validated using 1.1pF input capacitance and 400pF compensation capacitance on the COMP pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +3.3V ±0.3V - fixed single-supply operation compatible with 3.3V system rails |
| Transimpedance Gain | 6kΩ nominal - sets minimum detectable photodiode current at ~600nA for 3.6mVp-p limiting amplifier input threshold |
| Input Noise | 55nARMS (470MHz BW) - enables -33.2dBm sensitivity at 25°C with ρ = 0.9A/W, re = 10 |
| Bandwidth | 590MHz - meets SDH/SONET 622Mbps requirement (0.6–1× data rate), minimizing pattern-dependent jitter |
| Power Dissipation | 85mW - ultra-low-power operation critical for compact optical modules and thermal management |
| Pulse-Width Distortion | ≤200ps - ensures <100ps data-dependent jitter under worst-case 72-bit transitionless sequences |
| Output Configuration | Differential, back-terminated 60Ω per side - directly drives 100Ω differential loads without external termination resistors |
Pinout & Package
MAX3664ESA+ is housed in an 8-pin SO (Small Outline) package with exposed pad (SOIC-N), rated for -40°C to +85°C operation. Pin 1 is VCC; pins 3 and 4 are INREF1/INREF2 (photodetector AC ground references); pin 5 is GND; pin 6 is OUT+; pin 7 is OUT-; pin 8 is COMP (DC cancellation compensation node).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | +3.3V supply input | Primary power rail; requires local 0.01µF + 47nF bypassing to minimize supply-induced noise coupling into transimpedance node |
| IN (Pin 2) | Photocurrent input | High-impedance summing node for PIN diode anode current; layout must minimize stray capacitance (<0.3pF for SO package) |
| INREF1 / INREF2 (Pins 3, 4) | AC ground reference | Direct connection points to photodetector cathode ground return; loop length ≤2 cm to prevent common-mode noise injection |
| GND (Pin 5) | Signal ground | Substrate reference tied to PCB ground plane; shortest possible trace required to reduce ground bounce |
| OUT+ (Pin 6) | Noninverting output | Emitter-follower output sourcing current when IN receives photocurrent; internally back-terminated to 60Ω |
| OUT- (Pin 7) | Inverting output | Emitter-follower output sinking current when IN receives photocurrent; paired with OUT+ for true differential signaling |
| COMP (Pin 8) | DC cancellation loop capacitor node | Connect ≥400pF to GND to enable baseline restoration; direct GND connection disables loop for DC-coupled applications |
Key Features
| Feature | Design Value |
|---|---|
| Single +3.3V operation | Eliminates need for dual or negative supplies in compact optical modules, reducing BOM count and board space |
| 55nARMS input noise | Enables -33.2dBm receiver sensitivity at 25°C, exceeding ITU/Bellcore -28dBm requirement by 4.7dB margin |
| Differential 100Ω output drive | Provides matched, low-skew signaling to downstream limiting amplifiers (e.g., MAX3675) without external termination components |
| DC cancellation with adjustable loop | COMP pin allows optimization of low-frequency cutoff (e.g., 85kHz max for 72-bit sequences) to balance sensitivity loss vs. data-dependent jitter |
| 85mW total power | Supports thermally constrained TO-can and SFP module designs where junction temperature must remain <150°C |
Applications
| SDH/SONET 622Mbps Receivers | PIN Diode Preamplifier Modules |
|---|---|
Use Scenario: Front-end amplification in telecom-grade optical line cards receiving STM-4/OC-12 signals over single-mode fiber. IC Role / Device Role / Timing Role: Transimpedance preamplifier converting PIN diode photocurrent to differential voltage with minimal added noise and jitter. Use Value: Achieves -33.2dBm sensitivity at 25°C, exceeding SDH/SONET BER=1E-10 specification by >4dB while consuming only 85mW. | Use Scenario: Integration into hermetically sealed TO-46 header assemblies with co-packaged PIN diode for metro/access networks. IC Role / Device Role / Timing Role: Low-capacitance input interface (optimized for 0.3pF SO package parasitics) enabling >590MHz bandwidth in compact form factor. Use Value: Enables <200ps pulse-width distortion and 470MHz filtered bandwidth-critical for maintaining eye opening in 622Mbps PRBS data streams. |
| Regenerators for SDH/SONET | Fiber Channel 1Gbps Receivers |
Use Scenario: Signal reshaping in repeater nodes restoring amplitude and timing integrity after long-haul transmission. IC Role / Device Role / Timing Role: First-stage analog amplification providing stable gain and low-noise signal conditioning prior to clock recovery (e.g., with MAX3675). Use Value: Differential outputs with 60Ω back-termination ensure impedance-matched interstage connection, minimizing reflections that degrade jitter performance. | Use Scenario: High-speed datacom receiver in enterprise storage area networks using 850nm multimode fiber. IC Role / Device Role / Timing Role: Wideband transimpedance amplifier supporting 1.0625Gbps Fibre Channel data rates with scalable noise-performance trade-off. Use Value: 590MHz bandwidth and 55nARMS noise allow full compliance with FC-PI-2 sensitivity requirements while maintaining compatibility with existing 622Mbps design infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transimpedance preamplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3665ESA+ | Higher 1.2kΩ transimpedance, lower 35nARMS noise, 1.25Gbps-rated bandwidth (850MHz) | Targeted for 1.25Gbps Fibre Channel and Gigabit Ethernet; not optimized for SDH/SONET 622Mbps low-power envelope | Select MAX3665ESA+ only if higher bandwidth and lower noise justify increased power (110mW) and cost; not drop-in for MAX3664ESA+ layouts due to different gain/noise trade-off. |
| LMH6521MA/NOPB | Programmable transimpedance (1–10kΩ), 650MHz bandwidth, 60nARMS noise, dual-channel configuration | General-purpose RF transimpedance amplifier; lacks integrated DC cancellation and photodiode bias filtering (FILT pin) | Choose LMH6521MA/NOPB for multi-rate or test equipment use where programmability outweighs SDH/SONET-specific optimizations like COMP-based baseline restoration. |
Compared with MAX3664ESA+, MAX3665ESA+ delivers superior noise and bandwidth but at higher power and cost, while LMH6521MA/NOPB offers flexibility at the expense of SDH/SONET-optimized features such as integrated DC cancellation and photodiode bias support.
Availability
MAX3664ESA+ is available at Aetrix Electronics and suitable for SDH/SONET receivers, PIN diode preamplifier modules, and regenerator systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for telecom infrastructure programs.
Supply support for MAX3664ESA+ 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 solutions for communications, computing, and industrial markets.
The MAX3664ESA+ belongs to Maxim's optical receiver front-end product line, engineered specifically for low-power, high-sensitivity 622Mbps SDH/SONET applications with integrated DC cancellation and differential output drive.
FAQ
What is the maximum input current the MAX3664ESA+ can handle before pulse-width distortion exceeds specification?
The MAX3664ESA+ maintains ≤200ps pulse-width distortion up to 300µAp-p input current. Beyond this level, distortion increases nonlinearly; the device limits output swing to 900mV at ~100µAp-p, and full-scale operation at 300µAp-p is validated per Typical Operating Characteristics graphs. For reliable 622Mbps operation, inputs should remain ≤300µAp-p to meet SDH/SONET jitter and BER requirements. The MAX3664ESA+ datasheet specifies this limit under AC Electrical Characteristics with CIN = 1.1pF and CCOMP = 400pF.
Does the MAX3664ESA+ require external termination resistors for its differential outputs?
No, the MAX3664ESA+ does not require external termination resistors. Its OUT+ and OUT- pins feature internal 60Ω back-termination per side, enabling direct connection to a 100Ω differential load (e.g., MAX3675 input). This eliminates discrete termination components, reduces PCB area, and ensures consistent impedance matching across temperature and process variation. The internal termination is confirmed in the Typical Application Circuit and DC Electrical Characteristics table (ZOUT = 60Ω per side).
How does the COMP pin affect the low-frequency response of the MAX3664ESA+?
The COMP pin sets the time constant of the DC cancellation loop: connecting ≥400pF from COMP to GND yields optimal low-frequency cutoff (~85kHz max) for 622Mbps SDH/SONET compliance with 72-bit transitionless sequences. Reducing CCOMP raises the cutoff frequency, increasing data-dependent jitter; shorting COMP to GND disables the loop entirely, resulting in AC-coupled operation with no baseline restoration. This behavior is documented in the Detailed Description section and verified in Figure MAX3664-07 (Low-Frequency Cutoff vs. Average Input Current).
Can the MAX3664ESA+ be used with photodiodes operating at wavelengths other than 1300nm?
Yes, the MAX3664ESA+ is wavelength-agnostic-it amplifies photocurrent regardless of optical wavelength. Its -33.2dBm sensitivity is specified at 1300nm assuming ρ = 0.9A/W, but sensitivity scales linearly with photodiode responsivity (e.g., ~0.5A/W at 850nm). Users must recalculate sensitivity using actual ρ and extinction ratio per the optical power equations in Applications Information. The MAX3664ESA+'s 590MHz bandwidth supports both 850nm (1Gbps FC) and 1300nm (622Mbps SONET) systems without modification.
What is the role of the FILT pin in the MAX3664ESA+, and is it accessible in the SO package?
The FILT pin provides positive bias to the photodiode anode through a 1kΩ internal resistor connected to VCC, reducing supply-noise-induced current. However, FILT is **not accessible** in the MAX3664ESA+ (8-pin SO) package-it is available only on the die version (MAX3664E/D) and µMAX package per Pin Description and Ordering Information tables. SO-package users must implement external bias filtering using discrete components, as shown in the Typical Application Circuit with 1kΩ and 47nF.
MAX3664ESA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Transimpedance Preamplifier
- Applications:
- Optical Networks
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MAX3664ESA+ FAQ
1.How can I place an order for MAX3664ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX3664ESA+ 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 MAX3664ESA+ reliable?
The price and inventory of MAX3664ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX3664ESA+ is usually 5 days.
3.What payment methods are accepted for MAX3664ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX3664ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX3664ESA+?
MAX3664ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX3664ESA+ 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 MAX3664ESA+?
For technical support, including MAX3664ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX3664ESA+ requirements.
6.How does Aetrix verify that MAX3664ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX3664ESA+ 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 MAX3664ESA+ meets industry standards.
7.What is the process for return or replacement of MAX3664ESA+?
All MAX3664ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX3664ESA+, 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 MAX3664ESA+ part is unused and in its original packaging.
Return procedure for MAX3664ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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