The MAX2598 quad-band direct-conversion bits-to-RF radio transmitter is designed for 1x (3.84Mcps) and 2x (7.68Mcps) TDD-WCDMA applications. The part supports operation in the 874MHz, 1900MHz to 1920MHz, 2010MHz to 2025MHz, and 2050MHz to 2082MHz frequency bands.
The unique bits-to-RF architecture of the MAX2598 integrates 3 power amplifiers (PAs), quadrature mixers, variable-gain RF and baseband amplifiers, baseband filters, I and Q digital-to-analog converters (DACs), a fractional-N frequency synthesizer for local oscillator (LO) generation, and a fractional-N frequency synthesizer for sampling clock generation. Data is transferred from the baseband/DSP to the radio by a digital 1-bit sigma-delta modulated I and Q bitstream through an LVDS-like interface. The operating mode of the radio is fully programmable by a 3-wire serial interface.
The MAX2598 is specified for operation in the extended -40°C to +85°C temperature range and is available in a 9mm x 9mm x 1.4mm fcLGA package with exposed paddle (EP).
Key Features
Applications/Uses
Complete Digital Bits In to RF Out Radio Transmitter Subsystem
Supports 1x (3.84Mcps) and 2x (7.68Mcps) TDD-WCDMA Operation in the Following Bands:
874MHz
1900MHz to 1920MHz
2010MHz to 2025MHz
2050MHz to 2082MHz
MAX-PHY Digital Tx Interface with Single-Bit I and Q Bitstreams
Complete Two-Chip TDD-WCDMA Solution with MAX2548 Receiver
On-Chip Fractional-N Frequency Synthesizers for LO and Data Recovery Clock Generation
Operation Controlled Entirely by 3-Wire Serial Interface; No Analog Control Signals Necessary
TD-SCDMA Transmitters
TDD-WCDMA Handsets and Data Cards
Key Specifications:
Femto RF Transmitters
Part Number
Applications
Band/Freq (MHz)
Features
Footprint (mm x mm)
Package
RoHS Available
MAX2598
•
Data Cards
•
Handsets
•
TDD-WCDMA
•
TDTV Receivers
874
1900 to 1920
2010 to 2025
2050 to 2082
•
Complete Digital Bits-to-RF Output TX Radio Subsystem
•
Integrates 3 PAs with DACs and Fractional-N Frequency Synthesizers
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-3
of
3
MAX2598
Free Sample
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX2598EVKIT
Land Pattern: Not Available
See data sheet
MAX2598ELB+T
FCLGA;64 pin;0 mm²
Outline Drawing: 21-0167 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: L6499F+2*
Unique, ultra-high integration radio transmitter includes entire signal chain from digital input to final power amplifier output.
Related Products
MAX2547 WCDMA/HSPA Band I RF-to-Bits Femto-Basestation Radio Receiver MAX2599 Femto Basestation Bits-to-RF Radio Transmitter MAX2548 Quad-Band TDD-WCDMA RF-to-Bits Radio Receiver
