1

Characteristics

Table 1. Absolute maximum ratings (Tamb = 25 °C)

Symbol Parameter

Value

Unit

PIN

Input power RFIN

20

dBm

VESD

ESD ratings human body model (JESD22-A114), all I/O one at a time while others connected to

GND

2000

V

ESD ratings machine model (JESD22-A115), all I/O

200

TOP

Operating temperature

-40 to +105

°C

Table 2. Impedances (Tamb = 25 °C)

Symbol

Parameter

Value

Unit

Min.

Typ.

Max.

ZRX

Nominal differential RX balun impedance

-

matched ST S2-LP

-

Ω

ZTX

Nominal TX filter impedance

ZANT

Antenna impedance

-

50

-

Ω

Table 3. Electrical characteristics and RF performances (Tamb = 25 °C)

Symbol

Parameter

Test condition

Value

Unit

Min.

Typ.

Max.

f

Frequency range

433

MHz

ILRX-ANT

Insertion loss in bandwidth without mismatch loss (RX balun)

1.95

2.20

dB

ILTX-ANT

Insertion loss in bandwidth without mismatch loss (TX filter)

3.15

3.60

dB

RLRX-ANT

Input return loss in bandwidth (RX balun)

11

12

dB

RLTX-ANT

Input return loss in bandwidth (TX filter)

6.5

8.0

dB

ɸimb

Output phase imbalance (RX balun)

-2.1

2.1

°

Aimb

Output amplitude imbalance (RX balun)

-1.1

1.1

dB

Att

Harmonic levels (TX filter)

Attenuation at 2fo

52

58

dB

Attenuation at 3fo

53

63

Attenuation at 4fo

54

55

Attenuation at 5fo

54

55

Attenuation at 6fo

55

56

Attenuation at 7fo

56

57

BALF-SPI2-02D3

Characteristics

DS12508 - Rev 1

page 2/13