Semtech Wireless and Sensing Products

Semtech

Wireless and Sensing

SX8650: World’s Lowest Power & Smallest Footprint 4-wire Resistive Touchscreen Controller with 15kV ESD

The SX8650 is an ultra low power 4-wire resistive touchscreen controller optimized for portable equipment where power and board-space are at a premium.

SX1781 High Performance Integer-N Frequency Synthesizer

The SX1781 is a high-performance low noise integer-N frequency synthesizer for wireless communications applications. The circuit embeds a fully integrated PLL (including VCO tank and loop filter), complementary output buffers. The divider and power down settings are programmable via an SPI interface. A Lock Detector pin linked to a squelch function have been designed to ease the software development.

Key Features

Frequency range: 1200 - 1400MHz
Frequency step: 250 kHz min.
Phase noise: -85 dBc/Hz @ 10 kHz offset
Reference spurs: -67dBc
Hopping time: 350 ms max
Operating voltage: 3.0 - 3.6V
Programmable Output Power: up to +5 dBm
Integrated VCO and loop filter

Applications

Wirelss Comm Applications
Wireless Industrial Applications
Automatice Meter Reading
Discrete PLL Designs

Packaging: MLPQ16 (4x4mm)

SX1502 4/8/16 Channel Low Voltage GPIO

The SX1501, SX1502 and SX1503 are complete ultra low voltage General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment.

Key Features

4/8/16 channel of IOs
- True bi-directional style IO
- Programmable Pull-up/Pull-down
- Push/Pull outputs
1.2V - 5.5V independent operating voltage for all supply rails (VDDM, VCC1, VCC2)
5.5V compatible IOs, up to 25mA output sink
Fully programmable logic functions
400kHz 2-wire l2C compatible slave interface
Open drain active low interrupt output (NINT)
- Bit maskable
- Programmable edge sensitivity

Applications

Cellphones, PDAs, MP3 Players
Digital Cameras
Portable Multimedia Players
Notebooks
GPS Units

Packaging: QFN-UT-20 (3x3mm),TSSOP-20 (3x3mm)

SX1211 Lowest Power Integrated UHF Transceiver

The SX1211 is a low cost single-chip transceiver operating in the frequency ranges from 863-870, 902-928 MHz and 950-960MHz. The SX1211 is optimised for very low power consumption (3mA in receiver mode).

Key Features

Low Rx power consumption: 3mA
Low Tx power consumption: 25mA @ +10dBm
Good reception sensitivity: down to -107 dBm at 25kb/s in FSK., 113 dBm at 2kb/s on OOK
Programmable RF output power: up to +12.5dBm in 8 steps
Data whitening and automatic CRC generation
RSSI range from noise floor to 0dBm
Bit rates up to 200kb/s, NRZ coding
On-chip frequency synthesizer
FSK and OOK modulation
Incoming sync word recognition