STS1TX datasheet(15/70 Pages) STMICROELECTRONICS

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STS1TX

Characteristics

6.2.3

RF transmitter

Characteristics measured over recommended operating conditions unless otherwise

specified. All typical values are referred to TA = 25 °C, VBAT = 3.0 V. All performance is

referred to a 50 Ohm antenna connector, via the reference design.

VIL

Logic low level input

voltage

VDD/8

+0.3

VOH

High level output voltage

IOH = -2.4 mA (-4.2 mA if

high output current

capability is

programmed).

(5/8)*

VDD+

0.1

VOL

Low level output voltage

IOL = +2.4 mA (+4 mA if

high output current

capability is

programmed).

0.5

Table 11. Digital SPI input and output (SDO, SDI, SCLK, CSn, and SDN) and GPIO

specification (GPIO_1-4) (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Table 12. RF transmitter characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

PMAX_TX_BO

OST

Maximum output

power(1)

Delivered to a 50 Ohm single-ended

load via reference design using TX

boost mode configuration

-16

dBm

PMAX

Maximum output

power(1)

Delivered to a 50 Ohm single-ended

load via reference design

-11

dBm

PMIN

Minimum output power

Delivered to a 50 Ohm single-ended

load via reference design

-30

dBm

PSTEP

Output power step

0.5

STS1TX Datasheet(PDF) 15 Page - STMicroelectronics

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