SI4721-B20-GM 查看數據表（PDF） - Silicon Laboratories

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SI4721-B20-GM

BROADCAST FM RADIO TRANSCEIVER FOR PORTABLE APPLICATIONS

Silicon Laboratories 

Si4720/21-B20

Table 3. DC Characteristics

Parameter

Symbol Test Condition

Min

Typ

Max

FM Receiver

RX Supply Current

RX Supply Current1

RX Interface Supply Current

RX RDS Supply Current2

RX Supply Current2

FM Transmitter

IRX

—

IRX

Low SNR level

—

IIORX

—

IFM Analog Output Mode

—

IFMD Digital Output Mode

—

19.2

22

19.8

23

320

600

19.9

23

18.0

20.5

TX Supply Current

ITX

TX Interface Supply Current

IIOTX

FM Transmitter from Digital Audio Input

—

18.8

22.8

—

320

600

TX Supply Current

IDTX DCLK = 3.072 MHz

—

18.3

—

TX Interface Supply Current

IDIO

DCLK = 3.072 MHz

—

320

—

FM Transmitter in Receive Power Scan Mode

RX Supply Current

RX Interface Supply Current

Supplies and Interface

IRX

IIORPS

—

16.8

—

—

400

—

VDD Powerdown Current

IDDPD Powerdown mode

—

10

20

VIO Powerdown Current

IIOPD SCLK, RCLK inactive

—

3

10

Powerdown mode

High Level Input Voltage3

Low Level Input Voltage3

High Level Input Current3

Low Level Input Current3

High Level Output Voltage4

Low Level Output Voltage4

VIH

0.7 x VIO

—

VIO + 0.3

VIL

–0.3

—

0.3 x VIO

IIH

VIN = VIO = 3.6 V

–10

—

10

IIL

VIN = 0 V, VIO = 3.6 V

–10

—

10

VOH

IOUT = 500 µA

0.8 x VIO

—

—

VOL

IOUT = –500 µA

—

—

0.2 x VIO

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.

Unit

mA

mA

µA

mA

mA

mA

µA

mA

µA

mA

µA

µA

µA

V

V

µA

µA

V

V

6

Rev. 1.0

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