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AN4444 Datasheet(PDF) 8 Page - STMicroelectronics |
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AN4444 Datasheet(HTML) 8 Page - STMicroelectronics |
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8 / 68 page  Electrical characteristics AN4444 8/68 DocID025925 Rev 2 2 Electrical characteristics Table 2. Electrical and thermal characteristics of the ST7590 reference design Parameter Value Notes Min. Typ. Max. Unit Thermal data Ambient operating temperature -40 85 °C ST7590 thermal resistance 50(1) °C/W Measured on the ST7590 reference design 2-side PCB with thermal pad and 4 x 4 thermal via array Transceiver section Transmitting specifications (Tx mode) Transmitted signal -20 dB bandwidth 50 kHz Transmitted output current limit 1 A rms Receiving specifications (Rx mode) Minimum detectable received signal for the EVALKITST7590-Q1 board with AC supply 58 dBµV rms B-PSK coded BER ≤ 10-3 Passive Rx filter -3 dB bandwidth 100 kHz Power supply requirements VCC power supply voltage 8 13 18 V VCC power supply current absorption - Rx mode 8mA VCC power supply current absorption - Tx mode 30 mA Tx with no load 65 mA Tx over EN50065 AMN 355 mA Tx over PRIME AMN 460 mA Tx over short-circuit VDDIO digital supply voltage -10% 3.3 +10% V VDDIO digital supply current absorption 9 mA STM32 under reset, ST7590 under reset 55 mA STM32 operative, ST7590 under reset (3 mA from DL5) 90 mA STM32 operative, ST7590 operative 1. Measured over a continuous transmission period of 3000 seconds (steady state thermal dissipation). See Figure 45: Measured ST7590 thermal impedance curve (typical) on page 54 for the thermal impedance typical curve. |
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