SI4721-B20 datasheet(6/48 Pages) SILABS

Nome de Peças	SI4721-B20

Descrição Electrónicos	BROADCAST FM RADIO TRANSCEIVER FOR PORTABLE APPLICATIONS

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Fabricante Electrônico	SILABS [Silicon Laboratories]

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Si4720/21-B20

6

Rev. 1.0

Table 3. DC Characteristics

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

FM Receiver

RX Supply Current

IRX

—19.2

22

mA

RX Supply Current1

IRX

Low SNR level

—

19.8

23

mA

RX Interface Supply Current

IIORX

—

320

600

µA

RX RDS Supply Current2

IFM

Analog Output Mode

—

19.9

23

mA

RX Supply Current2

IFMD

Digital Output Mode

—

18.0

20.5

mA

FM Transmitter

TX Supply Current

ITX

—

18.8

22.8

mA

TX Interface Supply Current

IIOTX

—

320

600

µA

FM Transmitter from Digital Audio Input

TX Supply Current

IDTX

DCLK = 3.072 MHz

—

18.3

—

mA

TX Interface Supply Current

IDIO

DCLK = 3.072 MHz

—

320

—

µA

FM Transmitter in Receive Power Scan Mode

RX Supply Current

IRX

—16.8—

mA

RX Interface Supply Current

IIORPS

—400

—

µA

Supplies and Interface

VDD Powerdown Current

IDDPD

Powerdown mode

—

10

20

µA

VIO Powerdown Current

IIOPD

SCLK, RCLK inactive

Powerdown mode

—3

10

µA

High Level Input Voltage3

VIH

0.7 x VIO

—

VIO + 0.3

V

Low Level Input Voltage3

VIL

–0.3

—

0.3 x VIO

V

High Level Input Current3

IIH

VIN =VIO =3.6 V

–10

—

10

µA

Low Level Input Current3

IIL

VIN =0V, VIO =3.6 V

–10

—

10

µA

High Level Output Voltage4

VOH

IOUT = 500 µA

0.8 x VIO

—

V

Low Level Output Voltage4

VOL

IOUT = –500 µA

—

0.2 x VIO

V

Notes:

1. LNA is automatically switched to higher current mode for optimum sensitivity in weak signal conditions.

2. Guaranteed by characterization.

3. For input pins SCLK, SEN, SDIO, RST, RCLK, GPO1, GPO2/INT, and GPO3.

4. For output pins SDIO, GPO1, GPO2/INT, and GPO3.

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