Find New Designs with Wireless Technologies
Phân tích so sánh với SoC không dây của Phòng thí nghiệm Silicon Jul 07, 2022

Silicon Labs has been active in wireless SoC lately. It launched EFR32FG23(FG23) in September 2021, and released EFR32BG24(BG24) and EFR32MG24(MG24) in January 2022. All of them have gone through validation in alpha clients, and are now ready for shipment in the open market.

phòng thí nghiệm silicon


xFG23 was built for Sub 1GHz bands, supporting Wi-SUN and proprietary protocols. It is the world‘s first sub-GHz wireless solutions that combine long-range RF and energy efficiency with certified Arm PSA Level 3 security.


xBG24 and xMG24 were built for 2.4GHz frequency. While the both supporting AI/ML acceleration at edge side, xBG24 supports Bluetooth and 2.4GHz proprietary, and xMG24 is the Silicon Lab's first Matter-Ready wireless SoC. The latter exherts multi-protocol function to an extreme by incorporating Bluetooth, 2.4GHz proprietary, Matter, Zigbee and Thread, making users easier in building interconnected and interoperable IoT applications.


It is normal that new products come with upgrades in configuration or performance etc. However, in real scenarios of IoT application building, you got to investigate and trade off more elements. For that purpose, RF-star made a comparative analysis to all Silicon Labs wireless SoCs  in the following table for your reference.


Chip Model

Frequency Bands

Protocol Support

Package & Size

CPU Core

GPIO

Flash
KB

RAM
KB

BT Ver.
BLE
Mesh

Output Power Range

RX Sensitivity (dbm)

TX Current

RX Current

Security

AI/ML
Accel

2.4GHz

Sub GHz

Matter

Bluetooth

Zigbee

Thread

Proprietary

Wi-Fi

WI-SUN

EFR32BG24

QFN40 5x5
QFN48 6x6

Cortex-M33
32bit
78MHz

26
28
32

1024
1536

128
256

5.3

-20~10, 19.5 dBm

-105.7 dBm @125 kbps GFSK
-97.6 dBm @ 1 Mbps GFSK
-94.8 dBm @ 2 Mbps GFSK

5 mA @ 0 dBm
19.1 mA @ 10 dBm
156.8mA @ 19.5dBm

4.4 mA @1mbps GFSK

AES-128 / 256
SHA-1, SHA-2
ECC

EFR32BG22

QFN40 5×5
QFN32 4×4
TQFN32 4×4

Cortex-M33
32bit
76.8 MHz

18
26

352
512

32

5.3

6 dBm max

-106.7 dBm @125 kbps GFSK
-98.9dBm @1mbps GFSK
-96.2 dBm @ 2mbps GFSK

4.1 mA @ 0 dBm
8.2 mA @ 6 dBm

3.6 mA @1mbps GFSK

AES-128 / 256
SHA-1, SHA-2
ECC
ECDSA+ECDH

EFR32BG21

QFN32 4x4

Cortex-M33
32bit
80 MHz

20

512
768
1024

64
96

5.3

20dBm max

-97.5 dBm @ 1 mbps GFSK
-94.4 dBm @ 2mbps GFSK
-104.9 dBm @ 125 kbps GFSK

9.3 mA @ 0 dBm
33.8 mA @ 10 dBm

8.8 mA @1 mbps GFSK

AES-128 / 256
SHA-1, SHA-2
ECC
ECDSA+ECDH
J-PAKE

EFR32MG24

QFN40 5×5
QFN48 6×6

Cortex-M33
32bit
78 MHz

25
26
28
32

1024
1536

128
192
256

5.3

-20~10, 19.5 dBm

-105.4 dBm @250kbps O QPSK DSSS
-105.7dBm @125kbps GFSK
-97.6 dBm @1mbps  GFSK
-94.8 dBm @2mbps GFSK

5 mA @ 0 dBm
19.1 mA @ 10 dBm
156.8 mA @ 19.5 dBm

4.4 mA @1 mbps GFSK
5.1 mA @250 kbps O-QPSK DSSS

AES-128 / 192 / 256
ChaCha20-Poly1305
SHA-1, SHA-2
ECDSA+ECDH
Ed25519
Curve25519
J-PAKE
PBKDF2

EFR32MG21

QFN32 4x4

Cortex-M33
32-bit
80 MHz

20

512
768
1024

64
96

5.3

-20~ 10, 12.5, 20 dBm

-104.5dBm @250 kbps O-QPSK DSSS
-97.5 dBm @1mbps GFSK
-94.4 dBm @2 mbps GFSK
-104.9 dBm @ 125 kbps GFSK

9.3 mA @ 0 dBm
33.8 mA @ 10 dBm

8.8 mA @1 mbps GFSK
9.4 mA @250 kbps O-QPSK DSSS

AES-128 / 256
SHA-1, SHA-2
ECC
ECDSA+ECDH
J-PAKE

EFR32MG12

QFN48 7x7
QFN68 8x8
BGA125 7x7

Cortex-M4
32-bit
40 MHz

28
31
46
65

512
1024

64
128
256

5.3

19dBm, (2.4GHz)
20dBm     (Sub GHz)

-94.8 dBm @1mbps GFSK,2.4 GHz
-91.3 dBm @2mbps  GFSK, 2.4 GHz
-102.7 dBm @250 kbps DSSS-OQPSK,  2.4 GHz
-126.2 dBm @600 bps, GFSK, 915 MHz
-120.6 dBm @2.4 kbps, GFSK, 868 MHz
-107.4 dBm @4.8 kbps, OOK, 433 MHz
-112.2 dBm @38.4 kbps, GFSK, 169 MHz

8.5 mA @ 0 dBm, 2.4 GHz
35.3 mA @ 14 dBm,  868 MHz

11 mA @250 kbps, DSSS-OQPSK, 2.4 GHz
10.0 mA RX @1 Mbps, GFSK, 2.4 GHz
8.4 mA @38.4 kbps, GFSK, 169 MHz

AES-128 / 256
SHA-1, SHA-2
ECC

EFR32FG23

QFN40 5×5
QFN48 6×6

Cortex-M33
32-bit
78 MHz

22
23
31

128
256
512

32
64



20dBm max.

-98.6 dBm @ 400 kbps 920 MHz 4-GFSK
-125.8 dBm @ 4.8 kbps 915 MHz O-QPSK
-96.9 dBm @ 2 Mbps 915 MHz GFSK
-125.3 dBm @ 2.4 kbps 868 MHz GFSK
-111.5 dBm @ 38.4 kbps 868 MHz FSK
-110.7 dBm @ 100 kbps 433 MHz 2GFSK

25 mA @ 14 dBm,915 MHz
85.5 mA @ 20 dBm, 915 MHz

4.2 mA @920 MHz (400 kbps 4-FSK)
3.8 mA @915 MHz (4.8 kbps O-QPSK)
5.1 mA @915 MHz (2 Mbps GFSK)
3.7 mA @ 868 MHz (2.4 kbps GFSK)
3.7 mA @868 MHz (38.4 kbps FSK)
4.0 mA @433 MHz (100 kbps 2GFSK

AES-128 / 192 / 256
ChaCha20-Poly1305
SHA-1, SHA-2
ECDSA+ECDH
Ed25519
Curve25519
J-PAKE
PBKDF2

EFR32FG22

QFN40 5×5
QFN32 4×4

Cortex-M33
32-bit
38.4 MHz

18
26

512

32



6 dBm max

-102.3 dBm @ 250 kbps O-QPSK DSSS
-98.9 dBm @ 1mbps GFSK
-96.2 dBm sensitivity @2mbps GFSK

4.1 mA @ 0 dBm
8.2 mA @ 6 dBm

3.6 mA @1 Mbps GFSK
3.9 mA @250 kbps O-QPSK DSSS

AES-128 / 256
SHA-1, SHA-2
ECC
ECDSA+ECDH

EFR32FG12

QFN48 7x7
QFN68 8x8
BGA125 7x7

Cortex-M4
32-bit
40 MHz

28
31
46
65

512
1024

64
128
256



20dBm max

-94.8 dBm @ 1mbps GFSK,2.4 GHz
-102.7 dBm @ 250 kbps DSSS-OQPSK, 2.4 GHz
-126.2 dBm @600 bps, GFSK, 915 MHz
-120.6 dBm  @ 2.4 kbps, GFSK, 868 MHz
-107.4 dBm @ 4.8 kbps, OOK, 433 MHz
-112.2 dBm @38.4 kbps, GFSK, 169 MHz

8.5 mA @ 0 dBm, 2.4 GHz
35.3 mA @ 14 dBm, 868 MHz

8.4 mA @38.4 kbps, GFSK, 169 MHz
10.0 mA @ 1 Mbps, GFSK, 2.4 GHz
11 mA @250 kbps, DSSS-OQPSK, 2.4 GHz

AES-128  / 256
SHA-1, SHA-2
ECC

EFR32FG13

QFN32 5x5
QFN48 7x7

Cortex-M4
32-bit
40 MHz

16
28
31
32

512

64



20dBm max

-94.8 dBm @1mbps GFSK, 2.4 GHz
-102.7 dBm @250 kbps DSSS-OQPSK, 2.4 GHz
-126.2 dBm @600 bps, GFSK, 915 MHz
-120.6 dBm @2.4 kbps, GFSK, 868 MHz
-107.4 dBm @ 4.8 kbps, OOK, 433 MHz
-112.2 dBm @ 38.4 kbps, GFSK, 169 MHz

8.5 mA @ 0 dBm, 2.4 GHz
35.3 mA @ 14 dBm,868 MHz

‘8.4 mA @38.4 kbps, GFSK, 169 MHz
9.5 mA @1mbps, GFSK, 2.4 GHz
10.3 mA @250 kbps, DSSS-OQPSK, 2.4 GHz

AES-1282 / 256
SHA-1, SHA-2
ECC

EFR32FG14

QFN32 5x5
QFN48 7x7

Cortex-M4
32-bit
40 MHz

16
28
31
32

128
256

16
32



20dBm max

-93.8 dBm @1 mbps GFSK, 2.4 GHz
-103.3 dBm @250 kbps DSSS-OQPSK, 2.4 GHz
-126.2 dBm @600 bps, GFSK, 915 MHz
-120.6 dBm @2.4 kbps, GFSK, 868 MHz
-109.9 dBm @4.8 kbps, OOK, 433 MHz
-112.2 dBm @ 38.4 kbps, GFSK, 169 MHz

8.5 mA @ 0 dBm, 2.4 GHz
35.3 mA @ 14 dBm, 868 MHz

8.4 mA @38.4 kbps, GFSK, 169 MHz
8.8 mA @1 mbps, GFSK, 2.4 GHz
10.2 mA @ 250 kbps, DSSS-OQPSK, 2.4 GHz

AES-128 / 256
SHA-1, SHA-2
ECC

EFR32FG1

QFN32 5x5
QFN48 7x7

Cortex-M4
32-bit
40 MHz

16
28
31
32

32
64
128
256

8
16
32



20dBm max

-92,5 dBm @1 mbps GFSK, 2,4 GHz -99 dBm @ 250 kbps DSSS-OQPSK, 2,4 GHz -126,4 dBm @600 bps, GFSK, 915 MHz -121,4 dBm @ 2,4 kbps, GFSK, 868 MHz -107 dBm @4,8 kbps , OOK, 433 MHz -111,9 dBm @38,4 kbps, GFSK, 169 MHz




8,2 mA @ 0 dBm, 2,4 GHz 34,5 mA @ 14 dBm, 868 MHz

7,6 mA@38,4 kbps, GFSK, 169 MHz 8,7 mA@1mbps, GFSK, 2,4 GHz 9,8 mA@ 250 kbps, DSSS-OQPSK, 2,4 GHz

AES-128/256 SHA-1, SHA-2 ECC

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