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Analog Devices Inc./Maxim Integrated MAX2411AEEI
- Part No.:
- MAX2411AEEI
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Unclassified
- Package:
- Datasheet:
-
MAX2411AEEI.pdf
- Description:
- IC DVR LNA PA RF/UP/DWN 28-QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,152
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Product details
Overview
MAX2411AEEI from Maxim Integrated is a silicon bipolar RF transceiver front-end IC for time-division-duplex (TDD) systems, integrating LNA, downconverter mixer, LO buffer, upconverter mixer, and variable-gain PA driver in one 28-pin QSOP package. It operates at 1.9GHz with 2.4dB LNA noise figure, 9.2dB mixer noise figure, and 15dB PA driver gain, enabling compact cordless/PCS handset designs like PWT1900 and DECT.
For engineers reviewing the MAX2411AEEI datasheet, MAX2411AEEI pinout, MAX2411AEEI application, or MAX2411AEEI equivalent, this page delivers verified RF performance specs, bidirectional IF port implementation guidance, power management timing (≤2.5µs turn-on), and real-world matching network constraints for 1.9GHz PCS-band deployment.
Technical Context
The MAX2411AEEI implements a fully integrated TDD RF front-end using discrete bipolar transistor design, with separate RXEN/TXEN control enabling precise sequencing of receive and transmit paths. Its bidirectional differential IF port (IF/IF) shares a single external filter between upconversion and downconversion paths, reducing BOM count and PCB area versus dual-IF architectures.
LO inputs (LO/LO) are internally 50Ω-terminated, supporting both single-ended (LO to GND) and differential drive; the PA driver uses analog GC voltage (0–2.15V) for 35dB gain control range while maintaining 18dBm OIP3 across temperature. All RF ports require external AC coupling and impedance matching per frequency-specific S-parameter data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LNA Noise Figure | 2.4dB typical at 1.9GHz - enables high-sensitivity reception in low-SNR environments like handheld PCS terminals |
| Downconverter NF | 9.2dB typical - combined with LNA yields 3.2dB system NF, critical for meeting DECT/DCS1800 receiver sensitivity specs |
| PA Driver Gain | 15dB typical at full gain - provides sufficient drive level for external PA stages in PHS/PACS handsets |
| Gain Control Range | 35dB via 0–2.15V GC voltage - supports dynamic output power adjustment without digital control logic |
| Supply Voltage | +2.7V to +5.5V - allows direct interface with 3.3V or 5V system rails without LDO overhead |
| Shutdown Current | <0.3µW - meets ultra-low-power requirements for battery-operated Iridium handsets during sleep cycles |
| IF Frequency Range | 400MHz (typical) - defines fixed IF filter center frequency; requires matching network redesign if shifted |
Pinout & Package
MAX2411AEEI is housed in a 28-pin QSOP (Quad Small Outline Package) with exposed thermal pad, rated for -40°C to +85°C operation. Pin layout follows standard RF layout best practices: multiple ground pins (1,3,4,12,14,18,20,23,28) minimize inductance; VCC pins (5,10) require local 47pF decoupling; differential IF (21,22) and LO (7,8) pairs are adjacent for controlled-impedance routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LNAIN (2) | RF input to LNA | Single-ended 1.9GHz input requiring 1pF shunt capacitor for 50Ω match; VSWR <2:1 from 1.7–3GHz |
| LNAOUT (27) | LNA RF output | Drives RXMXIN through off-chip filter; no external matching needed at 1.9GHz due to optimized output impedance |
| RXMXIN (24) | RF input to downconverter mixer | Requires external matching network; impedance varies with frequency (see Fig. MAX2411Atoc21) |
| PADRIN (16) | RF input to PA driver | Internally matched to 50Ω at 1.9GHz; 2:1 VSWR typical - simplifies PA driver interface in PWT1900 designs |
| GC (11) | Analog gain control | 0–2.15V input adjusts PA driver gain over 35dB; 12dB/V sensitivity enables precise linear control |
| TXMXOUT (19) | RF output of upconverter mixer | Open-collector output requiring shunt inductor to VCC for DC bias and 50Ω match; critical for Tx spectral purity |
| IF / IF (21,22) | Bidirectional differential IF port | Shared Tx/Rx path - in Rx mode: open-collector outputs pulled up with inductors; in Tx mode: high-Z AC-coupled inputs |
| RXEN / TXEN (6,9) | Digital enable controls | Independent logic-level enables for Rx/Tx sections; dual low = shutdown (<0.3µW), dual high = standby (160µA) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional differential IF port | Eliminates need for separate Tx/Rx IF filters - reduces component count by ≥2 and PCB area in DECT/PHS handsets |
| Integrated LO buffer | Reduces required LO drive level to -17dBm - enables use of low-power synthesizers in battery-constrained Iridium handsets |
| Flexible power-down modes | Three distinct states: shutdown (<0.3µW), standby (160µA), and active - compatible with MAX2510/MAX2511 IF transceivers |
| Wide supply range | +2.7V to +5.5V operation - supports direct connection to Li-ion battery (3.0–4.2V) or regulated 3.3V/5V rails without level-shifting |
| Fast turn-on timing | Receiver turn-on ≤2.5µs, transmitter turn-on ≤2.5µs - meets TDD frame timing requirements for DCS1800/PCS1900 standards |
Applications
| PWT1900 Handset | DECT Cordless Phone |
|---|---|
Use Scenario: Full-duplex voice communication in 1.9GHz unlicensed spectrum with strict ETSI emission limits. IC Role / Device Role / Timing Role: RF front-end transceiver performing LNA amplification, downconversion, upconversion, and PA driver functions in TDD burst mode. Use Value: 2.4dB LNA NF and 9.2dB mixer NF meet -108dBm sensitivity requirement; 35dB GC range enables adaptive output power control per ETSI Class 2. |
Use Scenario: Short-range residential cordless telephony operating in 1880–1900MHz band with 10ms TDD slot timing. IC Role / Device Role / Timing Role: Single-chip RF front-end managing antenna switching, receive gain, and transmit drive under RXEN/TXEN control. Use Value: ≤2.5µs turn-on ensures clean transitions between 10ms Rx/Tx slots; bidirectional IF port cuts BOM cost by eliminating duplicate IF filters. |
| DCS1800 Base Station | Iridium Satellite Handset |
Use Scenario: Low-cost indoor base station supporting multiple handsets with stringent linearity requirements. IC Role / Device Role / Timing Role: Receive path LNA and downconverter plus transmit path upconverter and PA driver in shared IF architecture. Use Value: -10dBm LNA input IP3 and 4dBm mixer input IP3 suppress adjacent-channel interference in dense urban deployments. |
Use Scenario: Portable satellite terminal operating in harsh thermal environments (-40°C to +85°C) with ultra-low standby power needs. IC Role / Device Role / Timing Role: RF front-end providing robust 1.6GHz L-band receive/transmit capability with rapid power-state transitions. Use Value: <0.3µW shutdown current extends battery life during orbital eclipse periods; LO buffer accepts weak synthesizer output common in space-grade PLLs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF transceiver front-end applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX2410ESE+ | Separate single-ended IF input/output ports (no bidirectional IF); identical LNA/mixer/PA core architecture and pinout except IF routing | Required when system design mandates isolated Tx/Rx IF filtering or lacks differential IF processing capability | Select MAX2410ESE+ only if bidirectional IF port compatibility is not needed - same footprint but different IF interface logic |
| MAX2406ESE+ | Receive-only function (LNA + downconverter only); no PA driver, upconverter, or TXEN control; 20-pin QSOP package | Targeted at half-duplex or receive-dedicated applications like monitoring receivers or simplified base stations | Choose MAX2406ESE+ for cost-sensitive receive-only systems where transmit path is handled externally - not a drop-in replacement |
Compared with MAX2411AEEI, MAX2410ESE+ retains full TDD functionality but sacrifices IF integration for port separation, while MAX2406ESE+ reduces complexity and cost by removing transmit circuitry entirely - selection depends on whether bidirectional IF sharing and full duplex are mandatory.
Availability
MAX2411AEEI is available at Aetrix Electronics and suitable for PWT1900 handsets, DECT cordless systems, and DCS1800 base stations requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX2411AEEI 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 semiconductor company specializing in high-performance analog and mixed-signal ICs for communications, computing, and industrial applications.
The MAX2411AEEI belongs to Maxim's RF transceiver front-end product line, designed specifically for cost-sensitive, battery-powered TDD wireless devices operating in 1.8–2.0GHz bands including PCS, DECT, and PHS standards.
FAQ
What is the operating temperature range for the MAX2411AEEI?
The MAX2411AEEI is specified for operation from -40°C to +85°C, making it suitable for outdoor and automotive-adjacent wireless equipment. This range is validated across all electrical parameters including LNA noise figure, mixer conversion gain, and PA driver OIP3, with no derating required within the full span.
How does the bidirectional IF port of the MAX2411AEEI reduce system cost?
The MAX2411AEEI's bidirectional differential IF port (pins 21 and 22) allows the same external IF filter to be shared between transmit and receive paths, eliminating the need for two separate filters. This reduces BOM count by at least two SAW/BAW components and associated matching passives, cutting total RF front-end cost by ~15% in PWT1900 and DECT designs.
Can the MAX2411AEEI operate outside the 1.9GHz band?
Yes - the MAX2411AEEI functions across a wide RF range (1.7–3.0GHz), with LNA gain, mixer conversion gain, and PA driver performance characterized in the Typical Operating Characteristics. However, external matching networks must be redesigned per frequency, as LNAIN, RXMXIN, PADRIN, and TXMXOUT impedances vary significantly outside 1.9GHz.
What is the minimum LO drive level required for the MAX2411AEEI?
The MAX2411AEEI requires a minimum LO drive level of -17dBm at the LO/LO pins to achieve specified conversion gain and noise figure. This low requirement is enabled by the integrated LO buffer, allowing use of low-power fractional-N synthesizers common in portable devices without additional amplification stages.
How does the GC pin control the PA driver gain in the MAX2411AEEI?
The GC pin (pin 11) accepts an analog voltage from 0V to 2.15V to adjust the MAX2411AEEI's PA driver gain over a 35dB range. With 12dB/V sensitivity, a 1V change alters gain by ~12dB - enabling fine-grained output power control essential for ETSI-compliant DECT and PHS handset designs without digital DAC overhead.
MAX2411AEEI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
MAX2411AEEI FAQ
1.How can I place an order for MAX2411AEEI through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX2411AEEI 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 MAX2411AEEI reliable?
The price and inventory of MAX2411AEEI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX2411AEEI is usually 5 days.
3.What payment methods are accepted for MAX2411AEEI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX2411AEEI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX2411AEEI?
MAX2411AEEI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX2411AEEI 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 MAX2411AEEI?
For technical support, including MAX2411AEEI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX2411AEEI requirements.
6.How does Aetrix verify that MAX2411AEEI is sourced from the original manufacturer or authorized distributors?
All MAX2411AEEI 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 MAX2411AEEI meets industry standards.
7.What is the process for return or replacement of MAX2411AEEI?
All MAX2411AEEI units undergo pre-shipment inspection (PSI). If there is an issue with MAX2411AEEI, 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 MAX2411AEEI part is unused and in its original packaging.
Return procedure for MAX2411AEEI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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