STLC4420A datasheet(18/40 Pages) STMICROELECTRONICS

18 / 40 page

Electrical specifications

STLC4420A

18/40

CCK Output Power

Case 3: Set TX AGC to obtain this

Pout

Carrier offsets 0 to 10MHz

Carrier offsets >20MHz

-17

dBm

OFDM Output Power

-26

dBm

Output Noise Floor

-140

dBm/Hz

-143

dBm/Hz

CCK Output Power

Case 4: Set TX AGC to obtain this

Pout

Carrier offsets 0 to 10 MHz

Carrier offsets >20 MHz

-27

dBm

OFDM Output Power

-36

dBm

Output Noise Floor

-142.5

dBm/Hz

-145.5

dBm/Hz

CCK Output Power

Case 5: Set TX AGC to obtain this

Pout

Carrier offsets 0 to 10 MHz Carrier

offsets >20 MHz

-37

dBm

OFDM output power

-46

dBm

Output noise floor

-145

dBm/Hz

-148

dBm/Hz

External power amplifier detector ADC specifications

Full scale input

voltage

At input of ADC

1.0

Maximum input

voltage

At PA_DETx input -- 16 tap

resistive divider tap node

VDDA

Input resistance

30K

Ohm

Input capacitance

0.5

External power amplifier BIAS DAC specifications

Full scale output

current

At voltage output compliance >

1.8 V

2.5

At voltage output compliance =

1.8 V

Output voltage

compliance

Note: An external

resistor at PA_RREF

pin determines the

full scale output

current.

At -40°C, full scale output

current < 2.5mA, VDD_BIAS =

3.15 V

2.85

At +25°C, full scale output

current < 2.5mA, VDD_BIAS =

3.15 V

2.75

At +100°C, full scale output

current < 2.5mA, VDD_BIAS =

3.15 V

2.55

Full temperature range, scale

output current <= 5mA, VDD_BIAS

= 3.15 V

1.8

Table 2.

General electrical specifications (continued)

Parameter

Test condition / comment

Min.

Typ.

Max.

Units

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