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Analog Devices Inc./Maxim Integrated MAX2324EUP+
- Part No.:
- MAX2324EUP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- RF Misc ICs and Modules
- Package:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
MAX2324EUP+.pdf
- Description:
- IC LNA/MIXER SIGE ADJ 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,222
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Product details
Overview
MAX2324EUP+ from Maxim Integrated is a silicon germanium (SiGe) dual-band LNA/mixer IC designed for cellular-band CDMA receiver front-ends. It delivers 15 dB high-gain, high-linearity mode conversion gain, +11.5 dBm IIP3, 1.4 dB noise figure, and operates from +2.7V to +3.6V at 17–19.5 mA supply current in cellular band - enabling robust interference rejection in single/dual-mode handsets.
For engineers reviewing the MAX2324EUP+ datasheet, MAX2324EUP+ pinout, MAX2324EUP+ application, or MAX2324EUP+ equivalent, key selection criteria include its cellular-band-only operation (800–1000 MHz RF), pin-selectable low-gain mode (−1.5 dB, −3 mA), paging mode (−6 mA), and TSSOP-EP package compatibility with RF layout constraints.
Technical Context
The MAX2324EUP+ integrates a high-linearity LNA with dual gain settings and a differential CDMA mixer optimized for cellular-band (881 MHz RF, 1091 MHz LO) digital operation. Its architecture supports independent control of LNA bias via RLNA resistor and mode selection via LIN, GAIN, BAND, and SHDN pins - enabling dynamic trade-offs between gain, linearity, and current.
Unlike family members with LO doubler (MAX2321) or divider (MAX2326), the MAX2324EUP+ uses fixed LO paths: LOLIN for FM/digital cellular mode and LOHIN for cellular digital mode only. It provides differential CDMA+/- IF outputs and single-ended FMOUT, with no PCS-band functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | Cellular band only: 800–1000 MHz - supports CDMA/TDMA/GSM cellular handsets without PCS coverage. |
| LNA Gain (High-Gain Mode) | 14–16.5 dB - ensures sufficient signal amplification before mixer while maintaining cascaded IIP3. |
| IIP3 (High-Gain Mode) | +11.5 to +13.5 dBm - minimizes intermodulation distortion from strong adjacent-channel interferers. |
| Noise Figure | 1.3–1.5 dB - preserves SNR in weak-signal reception critical for cellular link budget. |
| Supply Current | 15–19.5 mA (cellular band, high-gain mode) - enables battery-efficient standby and active operation. |
| Shutdown Current | 0.1 µA - extends handset standby time during idle periods. |
| Operating Voltage | +2.7V to +3.6V - compatible with single-cell Li-ion battery systems without external regulation. |
Pinout & Package
MAX2324EUP+ is housed in a 20-pin TSSOP-EP (6 mm × 6.3 mm) package with exposed thermal paddle for enhanced RF thermal management and EMI shielding. The EP must be soldered to PCB ground plane per Maxim's layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RLNA) | LNA bias resistor connection | 20 kΩ to ground sets nominal LNA linearity; value adjustment tunes IIP3 vs. NF trade-off. |
| 2 (LNAOUTL) | Low-band LNA output | Differential-capable node requiring pull-up inductor + series capacitor for impedance matching to mixer input. |
| 3 (LNAOUTH) | High-band LNA output | Not used in MAX2324EUP+ - device is cellular-band only; pin is NC but must be left unconnected. |
| 5 (LNAINL) | Low-band RF input | Primary RF port for 881 MHz cellular signals; requires DC-blocking capacitor and matching network. |
| 6 (LNAINH) | High-band RF input | NC in MAX2324EUP+ - unused due to cellular-only operation; must be left floating or grounded per layout rules. |
| 9 (LOLIN) | Low-frequency LO input | Accepts 1091 MHz LO for cellular digital mode; also used in FM mode (991 MHz). |
| 10 (LOHIN) | High-frequency LO input | Used in cellular digital mode only (no PCS); connects to VCO or synthesizer output. |
| 13 (FMOUT) | FM mixer output | Single-ended IF output for FM broadcast band; requires pull-up inductor and AC-coupling capacitor. |
| 14 (VCC) | Power supply | +2.7V to +3.6V analog supply; requires local 1000 pF bypass capacitor directly at pin. |
| 16/17 (CDMA+/CDMA−) | Differential IF outputs | Deliver balanced 50–400 MHz IF signals to baseband IC; need termination and common-mode filtering. |
| 15 (BUFFEN) | LO buffer enable | Active-high control: enables LOHOUT/LOLOUT buffers independently of core circuitry to reduce leakage. |
| 7 (LIN) | Linearity select | Configures LNA for high- or low-linearity mode; affects IIP3, NF, and current draw. |
| 8 (GAIN) | Gain select | Selects high-gain (+14 dB) or low-gain (−1.5 dB) LNA path; bypasses LNA in low-gain mode. |
| 19 (MIXINL) | Low-band mixer input | Accepts LNAOUTL signal; internal connection to CDMA mixer core - no external routing required. |
Key Features
| Feature | Design Value |
|---|---|
| Cellular-band-only optimization | Eliminates PCS-band circuitry to reduce die size, power, and cost - ideal for cost-sensitive cellular-only designs. |
| Pin-selectable low-gain mode | Reduces LNA gain by 17 dB and supply current by 3 mA - improves cascaded IIP3 when strong blockers are present. |
| Pin-selectable paging mode | Cuts current by 6 mA during transmit idle - extends handset standby time without sacrificing receive sensitivity. |
| Differential CDMA mixer outputs | Provides 11–14 dB conversion gain with ±1 dB temperature stability - simplifies IF filtering and improves common-mode noise rejection. |
| 0.1 µA shutdown current | Enables full system-level power gating - critical for meeting 3GPP UE power consumption requirements. |
Applications
| CDMA Cellular Handset Front-End | Dual-Mode (CDMA/GSM) Mobile Phone |
|---|---|
Use Scenario: Receives 881 MHz CDMA signals in handheld devices with co-located GSM transmitters generating out-of-band interference. IC Role / Device Role / Timing Role: Dual-stage front-end: LNA amplifies weak signals; mixer downconverts to IF with high linearity to suppress cross-modulation. Use Value: +13.5 dBm IIP3 prevents desensitization from 20 dBm GSM TX leakage, maintaining BER < 1e-3 at -105 dBm RSSI. | Use Scenario: Shared RF front-end supporting both CDMA (cellular band) and GSM (same band) modes in a single PCB design. IC Role / Device Role / Timing Role: Configurable LNA/mixer core reuses same RF path for multiple standards via pin-strapped mode control. Use Value: Eliminates need for separate GSM/CDMA front-end ICs - reduces BOM count by one RF component and saves 12 mm² PCB area. |
| Wireless Local Loop (WLL) Subscriber Unit | Industrial Telemetry Transceiver |
Use Scenario: Fixed outdoor terminal receiving CDMA-based backhaul signals in noisy electromagnetic environments near power lines. IC Role / Device Role / Timing Role: High-NF, high-IIP3 LNA stage precedes mixer to maintain link margin under strong AM/RFI. Use Value: 1.4 dB NF ensures >18 dB link margin at 5 km range; 19.5 mA active current enables solar-powered operation. | Use Scenario: Battery-operated sensor node transmitting telemetry over CDMA networks with multi-year field life. IC Role / Device Role / Timing Role: Low-power receive chain activated only during scheduled polling windows using SHDN and paging mode. Use Value: 0.1 µA shutdown + 9 mA paging mode extends 2000 mAh Li-SOCl₂ battery life to >7 years at 10-minute wake intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-band LNA/mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX2320EUP+ | Supports both cellular and PCS bands; includes LO doubler; higher pin count for dual-VCO support. | Required for dual-mode (cellular + PCS) handsets; not pin-compatible due to additional LOX2 and MODE pins. | Select MAX2320EUP+ only if PCS-band coverage or LO frequency doubling is needed - adds complexity and cost for cellular-only use. |
| MAX2326EUP+ | Includes LO divider (÷2) for PCS band; cellular-band performance matches MAX2324EUP+; same 20-pin TSSOP-EP package. | Targeted at PCS-first designs; lacks FM mixer output; has different BAND logic mapping. | MAX2326EUP+ is not a drop-in replacement: BAND pin polarity differs, and FMOUT is absent - requires schematic and firmware updates. |
Compared with MAX2320EUP+ and MAX2326EUP+, the MAX2324EUP+ offers lowest BOM cost and smallest footprint for cellular-only applications, with dedicated FMOUT support and simplified pinout - making it optimal for cost-sensitive CDMA handset designs where PCS functionality is unnecessary.
Availability
MAX2324EUP+ is available at Aetrix Electronics and suitable for CDMA handset manufacturing, wireless local loop infrastructure, and industrial telemetry systems requiring stable component supply across extended temperature ranges (−40°C to +85°C) and long production lifecycles.
Supply support for MAX2324EUP+ 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 MAX2320 family was engineered to address stringent linearity, noise, and power requirements of 3G CDMA handset front-ends - delivering SiGe-level RF performance in cost-effective CMOS-compatible packages.
FAQ
What is the primary RF frequency band supported by the MAX2324EUP+?
The MAX2324EUP+ is specified exclusively for the cellular band: 800–1000 MHz RF input range. It does not support PCS-band operation (1800–2500 MHz), distinguishing it from other family members like MAX2320EUP+ or MAX2326EUP+. This makes MAX2324EUP+ ideal for CDMA/TDMA/GSM handsets operating solely in the 800/900 MHz spectrum.
Does the MAX2324EUP+ include an LO frequency doubler or divider?
No, the MAX2324EUP+ does not incorporate an LO frequency doubler or divider. Unlike MAX2321EUP+ (LO doubler) or MAX2326EUP+ (LO divider), the MAX2324EUP+ uses direct LO injection on LOLIN (1091 MHz) and LOHIN (cellular digital mode) without internal multiplication or division. Its pinout omits LOX2, confirming absence of doubler functionality.
What are the valid logic states for the GAIN and LIN pins on the MAX2324EUP+?
On the MAX2324EUP+, the GAIN pin selects LNA gain: high = high-gain mode (14–16.5 dB), low = low-gain mode (−1.5 dB). The LIN pin selects linearity: high = high-linearity mode (+11.5 dBm IIP3), low = low-linearity mode (+6 dBm IIP3). Both pins interface with standard 1.8V/3.3V logic and tolerate up to VCC + 0.3V.
Can the MAX2324EUP+ be used in FM radio reception applications?
Yes, the MAX2324EUP+ includes a dedicated FM mixer with single-ended FMOUT pin, optimized for 76–108 MHz FM broadcast band reception. In FM mode, it draws ~14.5 mA, achieves ~11 dB conversion gain, and maintains 10.6–11.5 dB noise figure - enabling integration into dual-mode (cellular + FM) handsets without adding a discrete FM tuner IC.
Is the exposed paddle (EP) on the MAX2324EUP+ package required to be connected to ground?
Yes, the exposed paddle on the MAX2324EUP+ TSSOP-EP package must be soldered to a solid PCB ground plane. Maxim specifies this as mandatory for thermal dissipation, RF shielding, and electrical stability. Failure to connect the EP degrades noise figure by up to 0.8 dB and increases junction temperature beyond safe limits under continuous operation.
MAX2324EUP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Dual Band LNA/Mixer
- Frequency:
- 824MHz ~ 849MHz, 869MHz ~ 901MHz, 935MHz ~ 940MHz
- RF Type:
- Cellular
- Secondary Attributes:
- Dual IF Outputs
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP-EP
MAX2324EUP+ FAQ
1.How can I place an order for MAX2324EUP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX2324EUP+ 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 MAX2324EUP+ reliable?
The price and inventory of MAX2324EUP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX2324EUP+ is usually 5 days.
3.What payment methods are accepted for MAX2324EUP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX2324EUP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX2324EUP+?
MAX2324EUP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX2324EUP+ 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 MAX2324EUP+?
For technical support, including MAX2324EUP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX2324EUP+ requirements.
6.How does Aetrix verify that MAX2324EUP+ is sourced from the original manufacturer or authorized distributors?
All MAX2324EUP+ 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 MAX2324EUP+ meets industry standards.
7.What is the process for return or replacement of MAX2324EUP+?
All MAX2324EUP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX2324EUP+, 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 MAX2324EUP+ part is unused and in its original packaging.
Return procedure for MAX2324EUP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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