AN4444 datasheet(8/68 Pages) STMICROELECTRONICS

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Electrical characteristics

AN4444

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DocID025925 Rev 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

°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

kHz

Transmitted output current limit

A rms

Receiving specifications (Rx mode)

Minimum detectable received signal for the

EVALKITST7590-Q1 board with AC supply

dBµV

rms

B-PSK coded

BER ≤ 10-3

Passive Rx filter -3 dB bandwidth

100

kHz

Power supply requirements

VCC power supply voltage

VCC power supply current absorption - Rx

mode

8mA

VCC power supply current absorption - Tx

mode

Tx with no load

Tx over EN50065 AMN

355

Tx over PRIME AMN

460

Tx over short-circuit

VDDIO digital supply voltage

-10% 3.3 +10%

VDDIO digital supply current absorption

STM32 under reset, ST7590 under reset

STM32 operative, ST7590 under reset

(3 mA from DL5)

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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