Land mobile radio

Overview

Our integrated circuits and reference designs help you create non-military land mobile radio designs with low-power transceivers over multiple carrier frequencies in multiple environments.

Design requirements

Non-military land mobile radio systems often require:

Low-power, high-speed radio frequency (RF) signal chains for flexible architecture and extended battery life.

Ultra-low phase noise clocks for superior signal-to-noise ratio (SNR) through the analog front end.

Low-noise and high-efficiency power for high sensitivity.

RF front-end receiver

The RF front-end receiver subsystem contains the VGA to adjust the gain of the RF signal after mixing. It also contains the amplifier to convert from single ended to differential and acts as an ADC driver. Finally, the ADC is used to do the data conversion and sends the data to the digital processing.

Products

High-speed ADCs (≥10 MSPS)

ADC34RF52—Quad-channel, 14-bit, 1.5-GSPS low-noise spectral density (NSD) RF-sampling ADC

ADS4125—12-Bit, 125-MSPS Analog-to-Digital Converter (ADC)

ADS4449—Quad-Channel, 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC)

ADC34J22—Quad-Channel, 12-Bit, 50-MSPS Analog-to-Digital Converter (ADC)

ADC32J42—Dual-Channel, 14-Bit, 50-MSPS Analog-to-Digital Converter (ADC)

ADC32J22—Dual-Channel, 12-Bit, 50-MSPS Analog-to-Digital Converter (ADC)

High-speed op amps (GBW ≥ 50 MHz)

OPA863A—Single-channel, high-precision, low-power, 105-MHz, 12-V RRIO voltage-feedback amplifier

OPA2354—250MHz, Rail-to-Rail I/O, CMOS Dual Operational Amplifier

RF VGAs

LMH6881—2.4GHz Programmable Differential Amplifier with Gain Control

Clock & timing

The clock and timing subsystem contains the clock buffer to handle clock distribution to the ADC, PLL and digital processing.

Products

RF PLLs & synthesizers

LMX2571—1.34-GHz, low-power, extreme-temperature RF synthesizer with frequency-shift keying (FSK) modulation

LMX2430—3.0-GHz/0.8-GHz PLLatinum dual high frequency synthesizer for RF personal communications

LMX2485E—50-MHz to 3-GHz delta-sigma low power dual PLL for RF personal communications

Clock buffers

CDC3RL02—Dual-channel square/sine-to-square wave clock buffer

LMK1C1103—3-channel output LVCMOS 1.8-V buffer

Clock generators

CDCM6208—2:8 ultra-low power, low jitter clock generator

Precision DACs (≤10 MSPS)

DAC101C081—10-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface

DAC60504—True 12-Bit, 4-channel, SPI, Vout DAC in tiny QFN package with precision internal reference

DAC63004—12-bit, 4-channel low-power voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator

DAC80502—Dual-channel, 1-LSB INL, 16-bit, SPI voltage-output digital-to-analog converter (DAC)

RF transmit front end

The RF transmit front end contains the DAC, amplifier and VGA to provide the appropriate gain and amplification for the RF output.

Products

Clock buffers

CDC3RL02—Dual-channel square/sine-to-square wave clock buffer

LMK1C1103—3-channel output LVCMOS 1.8-V buffer

Precision DACs (≤10 MSPS)

DAC101C081—10-Bit Micro Power Digital-to-Analog Converter with an I2C-Compatible Interface

DAC60504—True 12-Bit, 4-channel, SPI, Vout DAC in tiny QFN package with precision internal reference

DAC63004—12-bit, 4-channel low-power voltage/current output smart DAC with Hi-Z, EEPROM, waveform generator

DAC80502—Dual-channel, 1-LSB INL, 16-bit, SPI voltage-output digital-to-analog converter (DAC)

High-speed op amps (GBW ≥ 50 MHz)

OPA863A—Single-channel, high-precision, low-power, 105-MHz, 12-V RRIO voltage-feedback amplifier

OPA2354—250MHz, Rail-to-Rail I/O, CMOS Dual Operational Amplifier

Wireless interface

The wireless interface includes the Bluetooth to communication with accessories.

Products

Low-power 2.4-GHz products

CC2674R10—SimpleLink? Arm? Cortex?-M33 multiprotocol 2.4-GHz wireless MCU with 1-MB flash

CC2674P10—SimpleLink? Arm? Cortex?-M33 multiprotocol 2.4-GHz wireless MCU with 1-MB flash and power amplifier

CC2340R5—SimpleLink? 32-bit Arm? Cortex?-M0+ Bluetooth? Low Energy wireless MCU with 512-kB flash

Input user interface

The input user interface includes the keyboard scanner and I2C expander for efficient communication to the keypad and to increase the number of I2C communications.

Products

I2C general-purpose I/Os (GPIOs)

TCA9535—16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

TCA9555—16-bit 1.65- to 5.5-V I2C/SMBus I/O expander with interrupt, weak pull-up & config registers

TCA8418—18-bit 1.65- to 3.6-V 1MHz I2C/SMBus keypad scanner with interrupt, reset & 80 key support

PCA9534—8-bit 2.3- to 5.5-V I2C/SMBus I/O expander with interrupt & config registers

Non-isolated DC/DC

The non-isolated DC/DC subsystem contains the buck, boost and LDOs to provide proper power management to the system, with the PMIC being an integrated solution with power sequencing.

Products

Buck converters (integrated switch)

LM76002—3.5V to 60V, 2.5A Synchronous Step-Down Voltage Converter

TPS563252—3-V to 17-V input voltage, 3-A, 1.2-Mhz synchronous buck converter in SOT563

TPS563203—4.2-V to 17-V input, 3-A synchronous buck converter in SOT563

LM63635-Q1—3.5-V to 32-V, 3.25-A step-down voltage converter with spread spectrum

TPS62147—3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN

TPS62135—3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN

Multi-channel ICs (PMICs)

LP8725—Power Management IC (PMIC)for Application/Multimedia Processors and Sub-Systems

TPS65262-1—4.5V to 18V Input, 3A/1A/1A Triple Synchronous Step-Down Converter with 350mA/150mA Dual LDOs

TPS51200—3A Sink/Source DDR Termination Regulator w/ VTTREF Buffered Reference for DDR2, DDR3, DDR3L and DDR4

Boost converters (integrated switch)

TPS61021A—3-A Boost Converter with 0.5-V Ultra Low Input Voltage

TPS61041—28-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications

Audio interface

The audio interface includes the CODEC that is used to handle the audio input from the microphone and the DAC is used for the audio output, or a discreet speaker amplifier is used for the audio output. Audio amplifiers are used to handle the headphone output.

Products

Audio CODECs

TAC5212—High-performance stereo audio codec with 118-dB dynamic range ADC and 119-dB dynamic range DAC

TAC5112—Low-power stereo audio codec with 100-dB dynamic range ADC and 106-dB dynamic range DAC

TLV320AIC3254—Very Low-Power Stereo Audio CODEC with programmable miniDSP

Speaker amps

TPA3131D2—4-W stereo, 8-W mono, 4.5- to 26-V supply, analog input Class-D audio amplifier w/ filter free

LM4952—3.1-W, stereo, 9.6- to 16-V, analog input Class-AB audio amplifier

TPA2029D1—3-W, mono, analog input Class-D audio amp with auto. gain control & dynamic range compression

TPA3128D2—30-W stereo, 60-W mono, 4.5- to 26-V, analog input Class-D audio amplifier w/ low idle current

TPA6211A1—3.1-W, mono, analog input Class-AB audio amplifier

TPA0211—2-W, mono, analog input Class-AB audio amplifier

Energy storage

The energy storage subsystem includes the battery charger and gauge used for proper battery charging and protection.

Products

Battery charger ICs

BQ24616—Standalone 1-6 cell Buck battery charge controller with JEITA compliance

BQ25790—Integrated, NVDC, 5-A 1-cell to 4-cell switch-mode buck-boost battery charger

BQ25883—I2C 2 cell 2A Boost battery charger for USB input in a WQFN package with Power Path

BQ25622—I2C-controlled, one-cell 3.5-A buck battery charger with 18-V max input, current limit, ADC and OTG

BQ25713—I2C 1-4 cell NVDC Buck-Boost battery charge controller with USB type C PD support

BQ25892—I2C 1cell 5A buck battery charger with NVDC Power Path and PSEL

Battery fuel gauges

BQ28Z620— Battery fuel gauge with integrated protector for 1-series to 2 series packs with 1.2-V I/O

BQ78Z100—Impedance Track? battery fuel (gas) gauge for 1-series to 2-series

Wired interface

The wired interface includes the ESD and USB current limit switch to employ proper power protection at the USB interface.

Products

USB redrivers & multiplexers

TUSB216I—USB 2.0 high-speed signal conditioner with BC 1.2 controller

TS3USB31E—High-Speed USB 2.0 (480-Mbps) 1-Port Switch With Single Enable

ESD protection diodes

TPD1E04U04—0.5-pF, 3.6-V, ±16-kV ESD protection diode with in 0402 & 0201 packages for HDMI 2.0 & USB 3.0

TPD1E6B06—6pF ±5V ±15kV ESD protection diode in 0201 package

TPD1E10B06—12-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package

TPD2EUSB30A—Dual 0.7-pF, 3.6-V, ±8-kV ESD protection diode with 5-A surge rating for USB 3.0

Display interface

The display interface subsystem includes the LED driver that is used to drive the LEDs used to light up the keypad.

Products

Backlight LED drivers

TPS61160A—White LED driver with PWM brightness control in 2mm x 2mm Package. up to 10 LEDs in Series

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