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Analog Devices Inc./Maxim Integrated MAX2842ETN+
- Part No.:
- MAX2842ETN+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Telecom
- Package:
- -
- Datasheet:
-
MAX2842ETN+.pdf
- Description:
- TELECOM IC, BICMOS, PQCC56
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Inventory:8,830
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Product details
Overview
MAX2842ETN+ from Maxim Integrated is a 3.3GHz–3.9GHz direct-conversion MIMO RF transceiver IC with dual transmit and dual receive paths, differential RF I/O, integrated fractional-N PLL (25Hz step), on-chip AM detector for Tx I/Q imbalance/LO leakage measurement, and programmable monolithic Rx/Tx lowpass filters (3.5–10MHz). It delivers 0dBm linear OFDMA output (64-QAM), 3.8dB receiver noise figure, and supports full-duplex external loopback in WiMAX 16d/16e base stations.
For engineers reviewing the MAX2842ETN+ datasheet, MAX2842ETN+ pinout, MAX2842ETN+ application, or MAX2842ETN+ equivalent, this page provides verified technical context, real-world calibration capabilities (Tx-to-Rx loopback, on-chip DC cancellation), RF performance metrics across gain states, and validated alternative transceivers for 3.3–3.9GHz NLOS broadband systems.
Technical Context
The MAX2842ETN+ implements a zero-IF architecture with fully integrated VCO/tank, sigma-delta fractional-N synthesizer (50µs channel hop to ±50Hz), and independent digital control of both Tx and Rx gain (60dB Tx, 71dB Rx range via SPI). Its dual-path design enables simultaneous MIMO operation with 45dB Tx–Tx and 25dB Rx–Rx isolation.
It integrates programmable baseband filtering (configurable for 3.5/5/7/10MHz channels), automatic and modem-assisted I/Q DC offset correction, and on-chip crystal oscillator with digital tuning - eliminating external SAW filters and reducing BOM count in compact 3GHz WiMAX front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 3.3GHz to 3.9GHz - covers entire WiMAX 16d/16e 3GHz band without re-tuning. |
| Receiver Noise Figure | 3.8dB at max gain - enables high sensitivity for -72.5dBm signal detection in 10MHz channels. |
| Transmit Output Power | 0dBm (64-QAM, EVM = -36dB) - meets WiMAX spectral mask (-65dB relative) without external PA. |
| Frequency Step Size | ~25Hz - supports fine-grained frequency agility and precise carrier alignment in multi-user MIMO. |
| Rx Gain Control Range | 71dB digitally controlled via SPI - accommodates >60dB dynamic input range in NLOS environments. |
| Channel Hopping Time | 50µs settling to ±50Hz - enables rapid frequency switching for interference avoidance and TDD scheduling. |
| Supply Voltage | +2.7V to +3.6V - compatible with single Li-ion or regulated 3.3V system rails. |
| Package | 56-pin TQFN (7mm × 7mm, exposed paddle) - thermally optimized for high-power RF operation up to +85°C. |
Pinout & Package
The MAX2842ETN+ is housed in a 56-pin TQFN-EP package (7mm × 7mm, 0.5mm pitch) with exposed thermal paddle. Pin functions are defined per the MAX2842 Evaluation Kit schematic and datasheet Figures 1–3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXINA+, RXINA- | Differential RF input A | 100Ω balanced interface for antenna/receiver chain A; S11 ≤ -10dB across 3.3–3.9GHz. |
| RXINB+, RXINB- | Differential RF input B | 100Ω balanced interface for antenna/receiver chain B; 25dB isolation from RXINA path. |
| TXOUTA+, TXOUTA- | Differential RF output A | Drives balun or filter network; 6dB return loss minimum; supports 0dBm OFDMA output. |
| TXOUTB+, TXOUTB- | Differential RF output B | Independent Tx path with ≤2dB gain mismatch vs. TXOUTA across full band. |
| TXBBIA+, TXBBIA-, etc. | Differential I/Q baseband inputs | 25kΩ || 1pF impedance; accepts 90mVRMS 1MHz sine/cosine signals for modulation. |
| RXBBIA+, RXBBIA-, etc. | Differential I/Q baseband outputs | 90mVRMS typical; common-mode voltage programmable (0.77–1.32V) via register D5:D4. |
| SCLK, DIN, DOUT, CS | 4-wire SPI interface | 45MHz max clock; 6ns timing margins; enables full register access for calibration and mode control. |
| ENABLE, TXRX | Power and mode control | Enable/disable entire IC; select Tx/Rx/loopback modes with <2µs turnaround time. |
| REF_OSC | Reference oscillator input | AC-coupled 44.8MHz (0.8VP-P); supports 19–80MHz crystal or clock source. |
| VCC_, GND, EP | Power and ground | Single 2.7–3.6V supply; exposed paddle must be soldered for thermal dissipation & noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Tx I/Q gain/phase error and LO leakage detection | Integrated AM detector enables closed-loop calibration without external test equipment. |
| Transmit-to-receive loopback mode | Validates and corrects Rx I/Q imbalance using internal signal path - no RF loop cables required. |
| Fully integrated programmable Rx/Tx lowpass filters | Monolithic filters support 3.5/5/7/10MHz channel bandwidths - eliminates external SAW components. |
| Automatic on-chip receiver I/Q DC cancellation | One-shot convergence in <7µs after Rx enable - maintains EVM under fast AGC transitions. |
| Fractional-N PLL with 50µs channel hopping | Settles to ±50Hz in 50µs - meets WiMAX TDD frame timing and interference mitigation requirements. |
| Digital control for Tx/Rx/shutdown/standby modes | All operational states controlled via SPI registers - enables deterministic power sequencing in SoC designs. |
Applications
| WiMAX Base Station Radio Unit | 3G MIMO Fixed Wireless Access |
|---|---|
|
Use Scenario: Dual-polarized 2×2 MIMO radio unit in outdoor WiMAX 16d/16e base station operating at 3.5GHz. IC Role / Device Role / Timing Role: Primary RF transceiver handling full-duplex OFDMA uplink/downlink with integrated frequency synthesis and I/Q calibration. Use Value: Eliminates external SAW filters and discrete VCOs, reducing bill-of-materials by 12+ components while maintaining -65dB spectral mask compliance. |
Use Scenario: Compact CPE gateway for fixed wireless broadband in rural deployments with NLOS propagation. IC Role / Device Role / Timing Role: Dual-channel transceiver enabling spatial diversity reception and adaptive beamforming via independent Rx gain control. Use Value: 3.8dB NF and 71dB Rx gain range support -72.5dBm sensitivity in fading channels; 50µs PLL settling enables rapid frequency agility against interferers. |
| Point-to-Multipoint Backhaul Radio | WiMAX Subscriber Module |
|
Use Scenario: Outdoor backhaul radio linking cell sites over 5km with 10MHz channel bandwidth. IC Role / Device Role / Timing Role: Full-featured transceiver providing calibrated I/Q paths, RSSI monitoring, and loopback-based self-test for field maintenance. Use Value: On-chip AM detector and Tx-to-Rx loopback allow factory and field calibration without spectrum analyzer - cutting test time by 65%. |
Use Scenario: Indoor WiMAX subscriber module with integrated antenna and Ethernet bridge. IC Role / Device Role / Timing Role: Low-power MIMO transceiver supporting standby mode (≤10µA) and fast wake-up (<2µs) for energy-efficient operation. Use Value: Single 3.3V supply and 56-pin TQFN package enable PCB footprint <120mm² - critical for space-constrained indoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar MIMO RF transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9375BBCZ | Wider band (300MHz–6GHz), JESD204B interface, higher power consumption (2.4W), larger 144-BGA package. | Targets LTE/5G macro base stations; requires FPGA or ASIC with high-speed serial interface. | Select when multi-band flexibility and higher integration (integrated ADC/DAC, digital pre-distortion) outweigh size and power constraints. |
| LMX2594RHAR | PLL-only device (no RF transceiver paths); supports 10MHz–15GHz, ultra-low phase noise (-42dBc @ 100kHz), no integrated filters or I/Q circuitry. | Used as local oscillator source for discrete transceiver designs - not a functional replacement. | Select only as companion synthesizer in hybrid architectures where MAX2842ETN+ handles RF conversion and LMX2594 provides ultra-clean LO. |
Compared with AD9375BBCZ and LMX2594RHAR, the MAX2842ETN+ uniquely combines 3.3–3.9GHz MIMO transceiver functionality, monolithic filtering, and on-chip calibration in a compact 7mm × 7mm package - making it optimal for cost-sensitive, space-constrained WiMAX 16d/16e radios where full-band coverage and SAW-free design are mandatory.
Availability
MAX2842ETN+ is available at Aetrix Electronics and suitable for WiMAX base station radios, fixed wireless access gateways, point-to-multipoint backhaul units, and subscriber modules requiring stable component supply across industrial temperature ranges (-40°C to +85°C).
Supply support for MAX2842ETN+ 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, mixed-signal, and RF solutions for communications, industrial, and automotive markets.
The MAX2842ETN+ belongs to Maxim's broadband RF transceiver product line, designed specifically for 3GHz NLOS wireless broadband MIMO systems including WiMAX 16d/16e infrastructure equipment.
FAQ
What is the operating temperature range for the MAX2842ETN+?
The MAX2842ETN+ is rated for continuous operation from -40°C to +85°C ambient temperature. Its VCO maintains lock across this full range, and all AC/DC specifications - including 3.8dB noise figure and 0dBm transmit output - are guaranteed within these limits per the datasheet's characterization and design validation.
Does the MAX2842ETN+ require external SAW filters?
No, the MAX2842ETN+ does not require external SAW filters. It integrates fully programmable monolithic lowpass filters for both receiver and transmitter paths, supporting channel bandwidths of 3.5MHz, 5MHz, 7MHz, and 10MHz - meeting WiMAX spectral mask requirements without discrete filtering components.
How does the MAX2842ETN+ perform I/Q calibration?
The MAX2842ETN+ performs I/Q calibration using two methods: (1) an on-chip AM detector measures Tx I/Q gain/phase error and LO leakage directly, and (2) an internal transmit-to-receive loopback mode allows measurement and correction of Rx I/Q imbalance - both executed via SPI-controlled register writes without external instrumentation.
What is the RF output power capability of the MAX2842ETN+?
The MAX2842ETN+ delivers 0dBm linear output power under 64-QAM OFDMA modulation with EVM = -36dB and meets the -65dB relative spectral emission mask. Its output P-1dB is 10dBm, and RF gain control offers 60dB range via 6-bit SPI register (D5:D0), with binary-weighted steps of 1–32dB.
Is the MAX2842ETN+ pin-compatible with other Maxim transceivers?
The MAX2842ETN+ is not pin-compatible with other Maxim transceivers such as the MAX2837 or MAX2839. Its 56-pin TQFN layout, RF I/O placement, power pin distribution, and SPI register map are unique to the MAX2842 family and optimized for dual-path 3.3–3.9GHz MIMO operation.
MAX2842ETN+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Interface:
- -
- Number of Circuits:
- -
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX2842ETN+ FAQ
1.How can I place an order for MAX2842ETN+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX2842ETN+ 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 MAX2842ETN+ reliable?
The price and inventory of MAX2842ETN+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX2842ETN+ is usually 5 days.
3.What payment methods are accepted for MAX2842ETN+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX2842ETN+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX2842ETN+?
MAX2842ETN+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX2842ETN+ 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 MAX2842ETN+?
For technical support, including MAX2842ETN+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX2842ETN+ requirements.
6.How does Aetrix verify that MAX2842ETN+ is sourced from the original manufacturer or authorized distributors?
All MAX2842ETN+ 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 MAX2842ETN+ meets industry standards.
7.What is the process for return or replacement of MAX2842ETN+?
All MAX2842ETN+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX2842ETN+, 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 MAX2842ETN+ part is unused and in its original packaging.
Return procedure for MAX2842ETN+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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