SR1020 LE-UWBTM Wireless Transceiver IC
The SR1020 is SPARK's LE-UWB™ transceiver for the 6.2–9.5 GHz band. Operating globally across major regulatory domains, it delivers the performance and power profile of the SR1000 family has ultra-low power consumption, 50µs airtime latency, and robust coexistence with Wi-Fi and Bluetooth; all in a compact 4×4mm QFN28 package. It is the broadly applicable choice in the SR1000 family for commercial applications without sub-6 GHz requirements.
Overview
Engineered for the wire-free edge
Ultra-low power
The SR1020 aggressively duty-cycled architecture enables multi-year operation on a coin cell battery and battery-less energy harvesting configurations.
Deep sleep current is 920 nA; shutdown is 55 nA. The SR1020 active power profile is optimized for the 6–9 GHz band; 0.39 mA/Mbps RX and 0.12 mA/Mbps TX at 3.3 V.
Deep sleep current is 920 nA; shutdown is 55 nA. The SR1020 active power profile is optimized for the 6–9 GHz band; 0.39 mA/Mbps RX and 0.12 mA/Mbps TX at 3.3 V.
Very-low latency
50 µs airtime for 1 kbit.
Deterministic and consistent on every transmission. Enables real-time wireless data streams for headset, HID, gaming peripheral, and sensor applications where timing consistency is critical.
Deterministic and consistent on every transmission. Enables real-time wireless data streams for headset, HID, gaming peripheral, and sensor applications where timing consistency is critical.
Robust coexistence
The SR1020 operates alongside Wi-Fi 6E (6 GHz), Wi-Fi (5 GHz), and Bluetooth without interference. Carrier-Sense (CSMA) stack support and dynamic spectrum shaping ensure compliance with international UWB emission limits. The SR1020 maintains link integrity in the presence of strong out-of-band blockers across the 6–9 GHz range.
Low-cost integration
Single 32.768 kHz external crystal. High-efficiency PCB antenna. No external antenna component required. Standard SPI interface for straightforward MCU integration. 4×4 mm QFN28 footprint with minimal external components.
Specifications
Complete electrical parameters
RF Performance
Frequency band
6.0–9.3 GHz
TX power
Up to 3 dBm/20 MHz
RX sensitivity
−75 dBm/20 MHz
Symbol rates
20.48 MHz
Link budget
75 dB (at 0 dBm/20 MHz TX)
TX bandwidth
500 MHz–3 GHz reconfigurable
Digital & Interface
TX FIFO
1 kbit independent
RX FIFO
1 kbit independent
NVM
1 kbit
Host interface
Standard SPI (up to 40 MHz)
Modulation
OOK, differential encoding
FEC
Punctured convolutional, 1/1.33 / 1/1.66 / 1/2.0 rate
CRC
16-bit programmable
Sync word
32-bit programmable
Protocol support
Carrier-Sense (CSMA) stack, Auto Reply
Power
Supply voltage
1.8–3.3 V
Active RX
0.39 mA/Mbps
Active TX
0.12 mA/Mbps
Idle
300 µA
Shallow sleep
41 µA
Deep sleep
920 nA
Shutdown
55 nA
Internal DC-DC
1.0 V regulated, 79% efficiency at 20 mW load
Physical
Package
QFN28, 4×4 mm
Also available
WLCSP
Operating temperature
−40 to +85°C (industrial)
Antenna interface
100 Ω differential, no matching components required
External crystal
32.768 kHz (single, required)
Antenna diversity
Not supported (see SR1120 for antenna diversity)
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.