SR1120 LE-UWBTM Transceiver IC
The SR1120 is SPARK's latest and highest-performance LE-UWB™ transceiver. It delivers ultra-low latency, and ultra-low power in a 4×4 mm QFN32 package for enabling wireless implementations across applications that have traditionally required wires.
Overview
Engineered for the wire-free edge
Ultra-low power
The SR1120's aggressively duty-cycled architecture achieves orders-of-magnitude better energy efficiency than conventional IoT wireless solutions.
Active receive: 0.34 mA/Mbit/s. Active transmit: 0.10 mA/Mbit/s. Deep sleep: 920 nA. Shutdown: 55 nA.
Enables energy-harvesting configurations and reduced battery size across wearables, peripherals, and sensors.
Active receive: 0.34 mA/Mbit/s. Active transmit: 0.10 mA/Mbit/s. Deep sleep: 920 nA. Shutdown: 55 nA.
Enables energy-harvesting configurations and reduced battery size across wearables, peripherals, and sensors.
Ultra-low latency
25 µs airtime for 1 kbit.
Deterministic every time, the same on every transmission, with no jitter from congestion or retries.
Enables wireless implementations for systems that were traditionally only achievable with wires.
Enables wireless implementations for systems that were traditionally only achievable with wires.
Robust coexistence
Frequency hopping and listen-before-talk protocols enable seamless operation alongside BLE, Wi-Fi (2.4, 5, and 6 GHz), USB 3.0, and cellular.
Dynamic spectrum shaping ensures compliance with international UWB emission limits.
Dynamic spectrum shaping ensures compliance with international UWB emission limits.
Low-cost integration
Single 32.768 kHz external crystal. High-efficiency PCB antenna with no external antenna component required.
Standard SPI and Quad-SPI interfaces for straightforward MCU integration. 4×4 mm QFN32 footprint minimises board area.
Standard SPI and Quad-SPI interfaces for straightforward MCU integration. 4×4 mm QFN32 footprint minimises board area.
Specifications
Complete electrical parameters
RF Performance
Frequency band
6.2–9.5 GHz
TX power
Up to 3 dBm
RX sensitivity
-81 dBm
Symbol rates
20.48 / 27.31 / 40.96 MHz (configurable)
Spectrum
Dynamically reconfigurable, license-free UWB
Digital & Interface
TX FIFO
2 kbit independent
RX FIFO
2 kbit independent
Host interface
Standard SPI, Quad-SPI
Protocol support
Carrier-Sense (CSMA) stack
Power
Supply voltage
1.8–3.3 V
Active RX
0.34 mA per Mbit/sec
Active TX
0.10 mA per Mbit/sec
Deep sleep
920 nA
Shutdown
55 nA
Physical
Package
QFN32, 4×4 mm
Also available
WLCSP (contact sales)
Operating temperature
-40 to +85°C (industrial)
Antenna diversity
Supported
Ordering
Ordering information
WLCSP package also available. Contact sales for availability and pricing. Volume pricing available on request.
Reference Designs & Demos
Launch-ready silicon foundations
The SR1120 is the silicon foundation for SPARK's complete library of reference designs.