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Analog Devices Inc./Maxim Integrated MAX2203EWT+
- Part No.:
- MAX2203EWT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- RF Detectors
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX2203EWT+.pdf
- Description:
- Power Supply Support Circuit, Fi
- Quantity:
- Payment:
- Shipping:
Inventory:1,580
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Product details
Overview
MAX2203EWT+ from Maxim Integrated is an RMS power detector IC designed for RF power monitoring in WCDMA, cdma2000®, and HSDPA/HSUPA baseband transceivers. It operates from 800MHz to 2.0GHz, delivers 35mV/dB log slope (typ), supports -24dBm to +3dBm input range, and functions on a single 2.5V–4.2V supply across -40°C to +85°C - enabling accurate closed-loop transmit power control in cellular front-end modules.
For engineers reviewing the MAX2203EWT+ datasheet, MAX2203EWT+ pinout, MAX2203EWT+ application, or MAX2203EWT+ equivalent, this page provides verified package mapping (6-bump WLP), terminal-level functional roles, real-world detection accuracy (±0.4dB temp error), and validated alternatives for RF power control designs in 3G/4G infrastructure and handset PA feedback loops.
Technical Context
The MAX2203EWT+ implements true-RMS detection using BiCMOS process technology to maintain linear-in-dB output voltage versus input RF power regardless of signal crest factor - critical for WCDMA and cdma2000 waveforms with high peak-to-average ratios (up to 9.8dB). Its ENA pin integrates enable logic with internal 50kΩ pull-down, allowing low-power shutdown mode with <10µA ICC.
It features dedicated FILT terminal for intermediate filtering and OUT terminal with buffered analog output optimized for direct interface to ADCs. The device requires no external termination when used with directional couplers in dual-band configurations, as confirmed by Figure 1 and Typical Operating Circuit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 800MHz to 2000MHz - covers full WCDMA (1920–2170MHz), PCS (1850–1990MHz), and cellular (824–960MHz) bands without recalibration. |
| Detection Range | -24dBm to +3dBm - supports full dynamic range of 3G/4G PA output monitoring, including low-power idle and full-power burst conditions. |
| Log Slope | 35mV/dB (typ) - enables precise 1dB resolution over full range with standard 12-bit ADC (e.g., 1.2V full-scale yields ~34 LSB/dB). |
| RMS Accuracy | ±0.1dB (typ) vs. WCDMA modulation - ensures stable closed-loop power control under real-world signal statistics, not just CW. |
| Temp Error | ±0.4dB over -40°C to +85°C - eliminates need for system-level temperature compensation in portable and base station applications. |
| Supply Range | 2.5V to 4.2V - compatible with Li-ion battery rails and regulated 2.8V/3.3V supplies without LDO overhead. |
| Shutdown Current | ≤10µA - reduces standby power in TDD systems where detector is gated per transmit slot. |
Pinout & Package
MAX2203EWT+ uses a 6-bump wafer-level package (WLP), 1.2mm × 1.2mm × 0.55mm, with bottom-side solder bumps. Land pattern follows Maxim's W61B1+1 specification (Doc #21-0217); recommended PCB pad size is 0.25mm diameter with 0.4mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | RFIN/ENA | Combined RF input and digital enable: driven high (>1.1V) for active mode; low (<0.6V) for shutdown; internal 50kΩ GND pull-down avoids floating state. |
| A2, B1 | GND | Ground reference for RF, analog, and digital sections; must connect directly to solid PCB ground plane via multiple vias to minimize noise coupling. |
| B2 | FILT | Internal filter node requiring external capacitor (220pF typical) to stabilize bias point and suppress ripple from VCC or RFIN coupling. |
| C1 | VCC | Single supply input (2.5–4.2V); requires local 0.1µF X5R/X7R ceramic bypass placed ≤1mm from bump to suppress RF-induced supply noise. |
| C2 | OUT | Analog voltage output (0.4V to 1.75V) proportional to input power; connects directly to ADC input with optional RC lowpass (e.g., 10kΩ + 4700pF) per Typical Operating Circuit. |
Key Features
| Feature | Design Value |
|---|---|
| True-RMS detection | Maintains ±0.1dB accuracy across WCDMA/cdma2000 modulated signals - eliminates gain drift caused by PAPR variation in real traffic. |
| Integrated enable logic | Single-pin ENA control with internal pull-down allows direct GPIO interface without external resistors in most host MCU configurations. |
| No external termination needed | Eliminates 50Ω resistor at RFIN when used with directional couplers in dual-band setups (per Figure 1), reducing BOM count and layout area. |
| Low-tempco log conformance | ±0.4dB total error over full temperature range - enables one-time factory calibration instead of per-unit or runtime compensation. |
| Space-optimized WLP | 1.2mm × 1.2mm footprint fits within tight RF module layouts; compatible with standard SMT reflow profiles per AN1891. |
Applications
| WCDMA Handset Transmitter | cdma2000 Base Station PA Control |
|---|---|
|
Use Scenario: Real-time transmit power adjustment in dual-mode WCDMA handsets during uplink DPCCH + DPDCH transmission. IC Role / Device Role / Timing Role: RMS power detector providing analog feedback voltage to baseband processor ADC for closed-loop PA gain control. Use Value: Maintains ±0.1dB RMS accuracy despite 6.5dB PAPR of WCDMA uplink, ensuring compliance with 3GPP TS 25.101 output mask requirements. |
Use Scenario: Monitoring forward-link pilot channel power in cdma2000 base station remote radio heads. IC Role / Device Role / Timing Role: High-linearity RF power sensor feeding back to FPGA-based digital predistortion (DPD) controller. Use Value: Delivers 35mV/dB slope stability across -40°C to +85°C, enabling DPD convergence without thermal recalibration cycles. |
| HSDPA/HSUPA Mobile Hotspot | Multi-Band LTE Small Cell |
|
Use Scenario: Simultaneous downlink/uplink power management in 3G hotspot devices supporting HSDPA (Category 10) and HSUPA (Category 6). IC Role / Device Role / Timing Role: Dual-path RMS detector (with external switching) measuring both DL and UL PA outputs for adaptive power allocation. Use Value: -24dBm to +3dBm range covers idle (-70dBm RSSI) to full-power burst (+24dBm EIRP), with 0.2dB log conformance error at 1dB steps. |
Use Scenario: Front-end power monitoring in compact LTE small cells operating across Band 1/3/7/20 with shared PA architecture. IC Role / Device Role / Timing Role: Compact WLP detector embedded near coupler output to minimize trace loss and phase distortion before ADC sampling. Use Value: 1.2mm × 1.2mm WLP footprint allows placement within 2mm of coupler output port, preserving signal integrity below 2GHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RMS power detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADL5511ACPZ-R7 | Wider frequency range (10MHz–6GHz), higher supply current (12mA), larger 16-lead LFCSP package (3mm × 3mm). | Supports LTE/LTE-A and 5G NR sub-6GHz bands; less suitable for space-constrained handset modules. | Select ADL5511ACPZ-R7 when extending beyond 2GHz or requiring multi-standard coverage; MAX2203EWT+ remains optimal for cost- and size-sensitive WCDMA/cdma2000 designs. |
| LT5537IMS8#TRPBF | Narrower detection range (-35dBm to -5dBm), lower log slope (25mV/dB), MSOP-8 package (3mm × 3mm). | Better suited for low-power receiver path monitoring than high-dynamic-range transmitter feedback. | Choose LT5537IMS8#TRPBF for receive-chain RSSI measurement; MAX2203EWT+ is preferred for PA output control due to +3dBm max input and 35mV/dB sensitivity. |
Compared with ADL5511ACPZ-R7 and LT5537IMS8#TRPBF, the MAX2203EWT+ uniquely balances 800MHz–2GHz coverage, -24dBm to +3dBm range, 35mV/dB slope, and 1.2mm² WLP footprint - making it the only option qualified for production in space-limited 3G handset front-end modules requiring ±0.1dB RMS accuracy.
Availability
MAX2203EWT+ is available at Aetrix Electronics and suitable for WCDMA handset design, cdma2000 base station development, and HSDPA/HSUPA mobile hotspot manufacturing requiring stable component supply and long-term lifecycle support.
Supply support for MAX2203EWT+ 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 precision analog, mixed-signal, and RF ICs for communications, industrial, and consumer applications.
The MAX2203EWT+ belongs to Maxim's RF power detector product line, engineered specifically for accurate, temperature-stable RMS power measurement in 3G wireless infrastructure and mobile terminal transceivers.
FAQ
What is the absolute maximum RF input power rating for the MAX2203EWT+?
The MAX2203EWT+ has an absolute maximum RF input power rating of +10dBm, as specified in the Absolute Maximum Ratings table. Operation above this level risks permanent damage to the internal BiCMOS detector core. For reliable operation, the device is characterized over -24dBm to +3dBm, and its typical output voltage saturates at ~1.75V for inputs ≥+3dBm.
Does the MAX2203EWT+ require external termination at the RFIN pin?
No, the MAX2203EWT+ does not require external 50Ω termination at the RFIN pin when used with directional couplers in dual-band configurations, as explicitly stated in the Applications Information section and shown in Figure 1. This eliminates a discrete resistor and simplifies layout - unlike many competing detectors that mandate external matching.
How is the ENA pin configured for shutdown mode in the MAX2203EWT+?
In the MAX2203EWT+, the ENA function is integrated into the A1 bump (RFIN/ENA). To enter shutdown mode, drive the A1 pin to a logic-low voltage ≤0.6V. The device includes an internal ~50kΩ pull-down resistor, so no external pull-down is required unless interfacing with high-voltage GPIOs (>2.8V), in which case a series resistor limits ENA voltage to ≤2.7V.
What is the recommended bypass capacitor for the FILT pin of the MAX2203EWT+?
The FILT pin (B2) of the MAX2203EWT+ requires an external capacitor to stabilize the internal bias network. Per the Typical Operating Circuit and Applications Information, a 220pF ceramic capacitor is recommended for WCDMA applications, placed as close as possible to the bump. This value is optimized to suppress ripple without degrading response time for fast power control loops.
Can the MAX2203EWT+ accurately detect signals with high peak-to-average power ratio (PAPR)?
Yes, the MAX2203EWT+ is specifically characterized for high-PAPR signals: it achieves ±0.1dB RMS accuracy with WCDMA uplink (DPCCH + 1DPDCH, PAPR = 5.8dB) and maintains ±0.4dB total error across cdma2000 and IS95 waveforms (PAPR up to 9.8dB), as verified in Table 1 and Figures toc02–toc03 of the datasheet.
MAX2203EWT+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Frequency:
- 800MHz ~ 2GHz
- RF Type:
- W-CDMA
- Input Range:
- -24dBm ~ 3dBm
- Accuracy:
- ±0.4dB
- Voltage - Supply:
- 2.5V ~ 4.2V
- Mounting Type:
- 5 mA
- Supplier Device Package:
- Surface Mount
- Current - Supply:
- 6-WLP (1.24x0.84)
MAX2203EWT+ FAQ
1.How can I place an order for MAX2203EWT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX2203EWT+ 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 MAX2203EWT+ reliable?
The price and inventory of MAX2203EWT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX2203EWT+ is usually 5 days.
3.What payment methods are accepted for MAX2203EWT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX2203EWT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX2203EWT+?
MAX2203EWT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX2203EWT+ 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 MAX2203EWT+?
For technical support, including MAX2203EWT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX2203EWT+ requirements.
6.How does Aetrix verify that MAX2203EWT+ is sourced from the original manufacturer or authorized distributors?
All MAX2203EWT+ 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 MAX2203EWT+ meets industry standards.
7.What is the process for return or replacement of MAX2203EWT+?
All MAX2203EWT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX2203EWT+, 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 MAX2203EWT+ part is unused and in its original packaging.
Return procedure for MAX2203EWT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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