MAX2135A
ISDB-T/DVB-T Diversity Tuner
Industry's Only Diversity Tuner for Automotive TV Consumes Only 300mW
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Active: In Production. But some versions of the family are subject to Last Time Buy.
Description
The MAX2135A low-power, 6MHz ISDB-T and 6MHz/7MHz/8MHz DVB-T low-IF diversity tuner
directly converts broadcast ISDB-T and DVB-T signals to a low-IF using a broadband I/Q
downconverter. The operating frequency range covers the VHF and UHF broadcast TV bands
from 90MHz to 862MHz.
The MAX2135A integrates LNAs, RF variable-gain amplifiers (VGAs), VHF and UHF tracking
filters, I/Q downconverting mixers, baseband VGAs, and low-IF filters. The device also includes
a fully monolithic VCO and tank circuit as well as a complete frequency synthesizer including an
on-chip crystal oscillator and output buffer/divider.
The device incorporates a 2-wire (I²C) serial control interface with multiple read and write
addresses. A low-power standby mode is available whereupon the signal path is shut down
while leaving the serial control interface and register circuits active. Additionally, the entire
device can be shut down by an external pin.
The MAX2135A is available in a 56-pin thin QFN package (7mm x 7mm) with an exposed
paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature
range.
Key Features
Multiple Frequency Ranges
o VHF-L: 90MHz to 108MHz
o VHF-H: 170MHz to 230MHz
o UHF: 470MHz to 862MHz
Complete Diversity Solution
Low UHF Noise Figure: 3.7dB (typ)
High Dynamic Range: -99dBm to +10dBm
Integrated VHF/UHF Tracking Filter
Integrated VCO and Tank Circuits
Low Phase Noise: -95dBc/Hz at 10kHz (typ)
Integrated Channel Filters (6MHz, 7MHz, and 8MHz)
Single +2.7V to +3.47V Supply Voltage Range
Low Power: 396mW (typ)
Shutdown and Standby Modes
I²C Serial Interface
Applications/Uses
Automotive TV Diversity Systems
Laptop/Desktop TV Receivers
Portable LCD TVs
Portable Navigation Devices
Part
Number
Noise
Ref.
IF
Figure
Input
Clock
Output
(dB)
Frequency
Freq.
Freq.
(MHz)
(MHz)
(MHz)
typ
16 to 93 to 105
173 to 227 4.5
MAX2135A 18
32 to
473 to 859
36
Package/Pins
Footprint
VSUPPLY ISUPPLY
Oper. Temp.
Applications (mm x
(V)
(mA)
(°C)
mm)
UHF=3.7 2.7 to
VHF=4.8 3.47 70
to 5.5
DVB-T
ISDB-T (13 7.0 x 7.0 -40 to +85
segments)
https://www.maximintegrated.com/en/products/comms/wireless‐rf/MAX2135A.html/tb_tab3 9‐14‐17
TQFN/56
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