Specifications

January 13, 2021
Page 6/31
Document Ref: isp_lora_DS4520_R7
Insight SiP – Green Side – 400 avenue Roumanille – BP 309 – 06906 Sophia-Antipolis Cedex – France – www.insightsip.com
LoRa / BLE MODULE
ISP4520
2.4. Current Consumption
Parameter
Min
Typ
Max
Unit
LoRa current, Receiver active
(1)
4.6
mA
LoRa current, Transmitter active, EU and AS variant
(2)
25.5
mA
LoRa current, Transmitter active, US variant
(3)
118
mA
LoRa standby mode, no oscillator active
0.6
mA
LoRa sleep mode, with warm start
600
nA
LoRa off mode
160
nA
BLE Peak current, Receiver active
(4)
6.1
mA
BLE Peak current, Transmitter active +4 dBm Output Power
(5)
7.9
mA
BLE Peak current, Transmitter active 0 dBm Output Power
(5)
5.4
mA
CPU System OFF current, no RAM retention
0.3
µA
CPU System ON base current, full RAM retention
1.2
µA
CPU Additional RAM retention current per 4 KB block
20
N
nA
(1) DC-DC enabled, Power supply 3.3V, LoRa 125kHz (4) DC-DC enabled, Power supply 3V, 1 Mbps
(2) DC-DC enabled, Power supply 3.3V, Output power +14 dBm (5) DC-DC enabled, Power supply 3V
(3) DC-DC enabled, Power supply 3.3V, Output power +22 dBm
2.5. Clock Sources
Parameter
Min
Typ
Max
Unit
Internal High Frequency Clock for LoRa Synchronization:
32 MHz TCXO Tolerance
(1)
± 5
ppm
Internal High Frequency Clock for BLE RF Stability:
32 MHz Crystal Frequency Tolerance
(1)
± 40
ppm
Internal Low Frequency Clock for BLE Synchronization:
32.768 kHz Crystal Frequency Tolerance
(1)
± 40
ppm
Internal Low Frequency Clock for BLE Synchronization:
RC Oscillator
(2)
± 250
ppm
(1) Including initial tolerance, drift, aging, and frequency pulling
(2) Frequency tolerance after calibration
2.6. LoRa Radio Specifications
The ISP4520 is designed to be used in the upper ISM Bands in the region 800 – 900 Mhz. There are
currently three variations of the ISP4520, aimed at different markets. The key differences between the
products are the central frequency band that they are tuned for, and the output power that they are
capable of.
EU variant