MAX2661EUT+ Analog Devices Integrated Circuit (SOT23 (6-Pin)) In Stock
Analog Devices MAX2661EUT+ is a high-frequency upconverter mixer IC supporting IF input frequencies from 40 MHz to 500 MHz with a 50 Ω characteristic impedance, packaged in a compact 6-pin SOT-23 surface-mount package. It is designed for wireless transmitter up-conversion stages in portable radio, ISM band, and telemetry applications.
- Manufacturer
- Analog Devices
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- MAX2661EUT+ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Upconverter mixer with IF input range from 40 MHz to 500 MHz for wideband transmit chains
- Fixed 50 Ω characteristic impedance simplifies RF front-end matching network design
- Compact 6-pin SOT-23 package enabling miniaturized wireless module designs
- Surface-mount construction for automated PCB assembly in high-volume production
- Fixed LO (non-tunable) architecture for simplified system integration in fixed-frequency designs
- JESD-609 e3 Pb-free designation for RoHS-regulated market compliance
- Low external component count reduces board space and BOM complexity
Applications
MAX2661EUT+ is used in the upconversion stage of portable ISM-band transceivers, low-power telemetry transmitters, and narrowband wireless sensor modules where the IF signal must be upconverted to a higher RF carrier frequency. Its small SOT-23 footprint and minimal external components make it particularly suitable for compact wireless modules and densely integrated PCB designs operating in the sub-GHz frequency range.
Specifications
| Manufacturer Package Code | 6-SOT_23-N/A |
| Date Of Intro | 1998-07-15 |
| YTEOL | 9 |
| Characteristic Impedance | 50Ω |
| Construction | COMPONENT |
| IF Frequency-Max | 500MHz |
| IF Frequency-Min | 40MHz |
| JESD-609 Code | e3 |
| LO Tunable | NO |
| Mounting Feature | SURFACE MOUNT |
| Package Equivalence Code | TSOP6,.11,37 |
| Power Supplies | 3V |
| RF Output Frequency-Max | 2500MHz |
| RF Output Frequency-Min | 400MHz |
| RF/Microwave Device Type | UP CONVERTER |
| Supply Current-Max | 11.3mA |
| Surface Mount | YES |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Up Conversion Gain-Min | 7dB |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What IF frequency range does MAX2661EUT+ support, and does it cover the 433 MHz ISM band for wireless sensor applications?
MAX2661EUT+ supports IF input frequencies from 40 MHz to 500 MHz, which directly includes the 433 MHz ISM band commonly used in wireless sensor and remote-control applications. The 50 Ω input impedance simplifies interface matching between a baseband or IF oscillator stage and the mixer input without complex impedance transformation networks.
How does the fixed-LO architecture of MAX2661EUT+ affect frequency planning in a superheterodyne transmitter design?
MAX2661EUT+ uses a fixed, non-tunable LO input, meaning the RF output frequency is determined by the external LO source rather than an internal PLL. Designers must supply an external LO signal at the desired carrier frequency offset from the IF band (40 MHz to 500 MHz). This architecture simplifies the mixer itself but places frequency agility requirements on the external LO synthesizer.
What are the PCB layout considerations for MAX2661EUT+ in the 6-pin SOT-23 package at RF frequencies?
The 6-pin SOT-23 package has a 0.95 mm pin pitch and a body size of approximately 2.9 mm x 1.6 mm, which keeps parasitic lead inductance low at RF frequencies. RF port traces should be kept as short as possible and matched to 50 Ω microstrip impedance. Decoupling capacitors should be placed within 1 mm of the VCC pin to suppress supply noise from coupling into the LO or IF ports.
Is MAX2661EUT+ compliant with RoHS and lead-free soldering requirements for European market equipment?
Yes. MAX2661EUT+ carries a JESD-609 code of e3, indicating a Pb-free, RoHS-compliant solder finish. It is compatible with lead-free reflow profiles peaking at approximately 260°C, satisfying the EU RoHS Directive for inclusion in commercial and industrial wireless equipment sold in regulated markets.
When should MAX2661EUT+ be considered over a discrete BJT upconverter mixer for a low-cost ISM transmitter design?
MAX2661EUT+ integrates the mixer core, bias circuitry, and matched IF and RF ports in a single 6-pin SOT-23 device, reducing the BOM compared to a discrete BJT mixer that requires separate biasing resistors, matching inductors, and blocking capacitors. For production runs where assembly cost, board space, and design time savings outweigh the marginal cost difference, the integrated mixer is preferable. Discrete designs may only win when the application requires unusual impedance levels outside the 50 Ω standard.
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Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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