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Analog Devices Inc./Maxim Integrated MAX2324EUP-T
- Part No.:
- MAX2324EUP-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Unclassified
- Package:
- Datasheet:
-
MAX2324EUP-T.pdf
- Description:
- IC DOWN CONVERTER 20-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,458
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Product details
Overview
MAX2324EUP-T 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 supply at 17–21.5 mA current in cellular band - enabling robust interference rejection in handheld wireless terminals.
For engineers reviewing the MAX2324EUP-T datasheet, MAX2324EUP-T pinout, MAX2324EUP-T application, or MAX2324EUP-T equivalent, key selection criteria include its cellular-band-only operation (800–1000 MHz RF), dual IF output capability, pin-selectable low-gain mode (−17 dB, −3 mA), paging mode (−6 mA), and 20-pin TSSOP-EP package with exposed paddle for thermal management.
Technical Context
The MAX2324EUP-T integrates a high-linearity LNA with dual gain modes and a differential CDMA mixer optimized for cellular-band (881 MHz) operation. Its architecture supports separate LO input paths (LOLIN/LOHIN), digital control via LIN, GAIN, BAND, and SHDN pins, and provides differential CDMA+/- outputs with 50–400 MHz IF bandwidth.
It features an FM mixer with single-ended FMOUT output, LO buffer enable (BUFFEN), and internal biasing controlled by external RLNA and RBIAS resistors. The device uses SiGe process technology to achieve ultra-low noise and high IIP3 simultaneously at sub-22 mA supply current across −40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | Cellular band only: 800–1000 MHz - supports CDMA/TDMA/GSM 850/900 MHz systems |
| LNA Gain (HGHL mode) | 14–16.5 dB - enables high sensitivity while maintaining cascaded linearity |
| IIP3 (HGHL mode) | +11.5 to +13.5 dBm - suppresses intermodulation from strong adjacent-channel interferers |
| Noise Figure | 1.3–1.5 dB - preserves weak signal SNR in battery-powered handsets |
| Supply Current | 17–21.5 mA (HGHL), 15–19.5 mA (paging) - extends standby time without sacrificing performance |
| Shutdown Current | 0.1 µA - ensures near-zero power drain during sleep states |
| Supply Voltage | +2.7V to +3.6V - compatible with single-cell Li-ion and Li-poly battery rails |
Pinout & Package
Package: 20-pin TSSOP-EP (6 mm × 6.3 mm) with exposed thermal paddle - requires solder paste stencil design and thermal pad grounding per JEDEC MO-153 for reliable power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 16, 17, 18, 19 | Ground / Exposed Paddle | Primary thermal path and RF return; must be connected to solid ground plane |
| 4 (MODEOUT) | Digital Output | Indicates FM mode (high) - used for system state monitoring and mode coordination |
| 5 (SHDN) | Digital Input | Active-low shutdown control - reduces ICC to 0.1 µA when pulled low |
| 6 (LNAINL) | Low-band RF Input | 881 MHz cellular RF port requiring DC-blocking capacitor and impedance matching |
| 7 (LIN) | Linearity Select Input | Selects LNA operating mode: high-linearity (low) or low-linearity (high) |
| 8 (GAIN) | Gain Select Input | Enables high-gain (low) or low-gain (−17 dB, high) LNA path |
| 9 (LOLIN) | Low-frequency LO Input | 1091 MHz LO port for cellular digital mode and FM mode |
| 10 (LOHIN) | High-frequency LO Input | 1750 MHz LO port for PCS band - unused in MAX2324EUP-T (cellular-only) |
| 11 (LOHOUT) | High-frequency LO Buffer Output | Open-collector output requiring ≤100 Ω pull-up - drives external VCO or filter |
| 12 (LOLOUT) | Low-frequency LO Buffer Output | Open-collector output for 1091 MHz LO distribution - matched to 50 Ω load |
| 13 (FMOUT) | FM Mixer Output | Single-ended IF output for FM demodulation - requires series AC-coupling cap |
| 14 (VCC) | Power Supply | +2.7V to +3.6V analog/digital rail - bypassed with 1000 pF capacitor near pin |
| 15 (BUFFEN) | LO Buffer Enable | Independent control of LO buffers - allows dynamic LO power gating |
| 19 (MIXINL) | Low-band Mixer Input | Connects to LNAOUTH output - forms LNA-to-mixer signal chain for cellular band |
Key Features
| Feature | Design Value |
|---|---|
| Pin-selectable low-gain mode | Reduces LNA gain by 17 dB and supply current by 3 mA - improves cascaded IIP3 in multi-stage receivers |
| Paging mode | Reduces current draw by 6 mA during idle - extends handset standby time without disabling RF path |
| Dual differential CDMA mixer outputs | CDMA+ and CDMA− pins support balanced IF filtering and noise rejection in CDMA baseband interfaces |
| SiGe process technology | Enables simultaneous ultra-low NF (1.3 dB) and high IIP3 (+13.5 dBm) at <22 mA - eliminates trade-off between sensitivity and linearity |
| Exposed thermal paddle | Supports 6.4 W continuous power dissipation at TA = +70°C - critical for sustained high-current operation in compact handsets |
Applications
| CDMA Cellular Handset Front-End | Dual-Mode (CDMA/GSM) Mobile Terminal |
|---|---|
Use Scenario: Primary RF receive path in 850 MHz CDMA handset supporting IS-95 and CDMA2000 standards. IC Role / Device Role / Timing Role: Dual-band LNA/mixer IC providing first-stage amplification and downconversion with differential IF output. Use Value: +13.5 dBm IIP3 and 1.3 dB NF ensure reliable reception under strong blocker conditions (e.g., co-located GSM transmit leakage). | Use Scenario: Shared RF front-end in dual-mode phones where MAX2324 handles CDMA band and companion IC covers GSM band. IC Role / Device Role / Timing Role: Cellular-band-specific LNA/mixer with independent LO and bias control - avoids cross-mode interference. Use Value: Pin-selectable gain and linearity modes allow dynamic reconfiguration between voice call (HGHL) and idle (paging) states. |
| Wireless Local Loop (WLL) Subscriber Unit | Industrial Telemetry Transceiver |
Use Scenario: Fixed outdoor terminal receiving CDMA-based backhaul signals in rural broadband access systems. IC Role / Device Role / Timing Role: High-reliability LNA/mixer operating over extended temperature range (−40°C to +85°C) with stable gain vs. temperature. Use Value: ±0.5 dB gain variation over full temperature range ensures consistent link budget without calibration. | Use Scenario: Low-power remote sensor node transmitting telemetry via CDMA uplink and receiving configuration commands. IC Role / Device Role / Timing Role: Receiver front-end optimized for intermittent operation - leverages 0.1 µA shutdown and fast wake-up. Use Value: 6 mA paging mode current reduction extends battery life in duty-cycled applications without compromising receive sensitivity. |
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-T | Dual-band (cellular + PCS); includes LO doubler; higher pin count logic interface | Supports both 850/900 MHz and 1900/2100 MHz bands - not cellular-band-only | Select when dual-band coverage is required; MAX2324EUP-T offers lower cost and simpler layout for cellular-only designs |
| MAX2326EUP-T | Dual-band with integrated LO divider; different LO input routing (BAND pin controls division); higher LO drive requirement | Optimized for PCS-first architectures with divide-by-two LO synthesis - incompatible LO timing and biasing | Choose for PCS-centric systems needing frequency flexibility; MAX2324EUP-T provides better cellular-band NF/IIP3 balance |
Compared with MAX2320EUP-T and MAX2326EUP-T, the MAX2324EUP-T delivers superior cellular-band noise figure (1.3 dB) and tighter gain stability (±0.5 dB) at lower quiescent current - making it the optimal choice for cost-sensitive, single-band CDMA handset designs.
Availability
MAX2324EUP-T is available at Aetrix Electronics and suitable for CDMA cellular handsets, wireless local loop subscriber units, and industrial telemetry transceivers requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for MAX2324EUP-T 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 - including MAX2324EUP-T - was engineered specifically for battery-powered CDMA/TDMA handset front-ends, emphasizing ultra-low-noise SiGe LNA performance, adaptive power modes, and integrated mixer functionality in a thermally enhanced TSSOP package.
FAQ
What is the primary RF frequency band supported by the MAX2324EUP-T?
The MAX2324EUP-T is specified exclusively for cellular-band operation from 800 MHz to 1000 MHz - covering CDMA (881 MHz), TDMA, and GSM 850/900 MHz standards. It does not support PCS band (1800–2500 MHz); that capability is reserved for other members of the MAX2320 family such as MAX2320EUP-T and MAX2321EUP-T. This band limitation is inherent to the MAX2324EUP-T's internal LNA and mixer tuning.
Does the MAX2324EUP-T support differential IF outputs?
Yes, the MAX2324EUP-T provides true differential CDMA mixer outputs on pins 16 (CDMA+) and 17 (CDMA−), supporting balanced IF filtering and improved common-mode noise rejection. These outputs are optimized for 50–400 MHz IF frequencies and require external pull-up inductors and series AC-coupling capacitors per the reference design. The FM mixer output (pin 13, FMOUT) remains single-ended.
How does the paging mode reduce current consumption in the MAX2324EUP-T?
The MAX2324EUP-T achieves a 6 mA current reduction in paging mode by switching the LNA into a high-gain, low-linearity configuration while optimizing bias currents across the signal chain. This mode maintains sufficient receive sensitivity for call alert detection while minimizing active power - verified at 15–19.5 mA typical supply current versus 21–25.5 mA in high-gain, high-linearity mode. The transition is controlled via the GAIN and LIN pins.
What is the function of the MODEOUT pin on the MAX2324EUP-T?
The MODEOUT pin (pin 4) is a digital output that asserts high during FM mode operation - indicating activation of the FM mixer path. In all CDMA/TDMA digital modes (including cellular-band HGHL, LGHL, and HGLL), MODEOUT remains low. This pin enables host processor monitoring of RF subsystem state and synchronization of baseband processing paths without requiring additional status registers or I²C reads.
Is the MAX2324EUP-T pin-compatible with other devices in the MAX2320 family?
No, the MAX2324EUP-T is not pin-compatible with MAX2320EUP-T, MAX2321EUP-T, or MAX2326EUP-T. Although all share the same 20-pin TSSOP-EP package, pin functions differ significantly - for example, LOHIN (pin 10) is unused in MAX2324EUP-T but critical for PCS-band operation in MAX2320EUP-T, and MODE (pin 6 in MAX2320) is repurposed as LNAINL in MAX2324EUP-T. PCB layout must be specific to each variant.
MAX2324EUP-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
MAX2324EUP-T FAQ
1.How can I place an order for MAX2324EUP-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX2324EUP-T 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-T reliable?
The price and inventory of MAX2324EUP-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX2324EUP-T is usually 5 days.
3.What payment methods are accepted for MAX2324EUP-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX2324EUP-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX2324EUP-T?
MAX2324EUP-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX2324EUP-T 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-T?
For technical support, including MAX2324EUP-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX2324EUP-T requirements.
6.How does Aetrix verify that MAX2324EUP-T is sourced from the original manufacturer or authorized distributors?
All MAX2324EUP-T 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-T meets industry standards.
7.What is the process for return or replacement of MAX2324EUP-T?
All MAX2324EUP-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX2324EUP-T, 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-T part is unused and in its original packaging.
Return procedure for MAX2324EUP-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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