ST7590 datasheet(10/24 Pages) STMICROELECTRONICS

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Analog front end

Power amplifier

V(PA_OUT)BIAS Power amplifier output bias voltage - Rx mode

VCC/2

GBWP

Power amplifier gain-bandwidth product

100

MHz

I(PA_OUT)MAX

Power amplifier maximum output current

1000

mA rms

V(PA_OUT) TOL Power amplifier output tolerance

(2)

-3%

V(PA_OUT) HD2 Transmitter output 2nd harmonic distortion

VCC=13 V, V(PA_OUT) = 7 V p-p,

V(PA_OUT) BIAS = VCC/2,

RLOAD=50 Ω

see Figure 4

-71

dBc

V(PA_OUT) HD3 Transmitter output 3rd harmonic distortion

-68

dBc

V(PA_OUT) THD Transmitter output total harmonic distortion

0.1

V(PA_OUT) HD2 Transmitter output 2

nd harmonic distortion

VCC=18 V, V(PA_OUT) = 14 V p-p,

V(PA_OUT) BIAS = VCC/2,

RLOAD=50 Ω

see Figure 4

-70

dBc

V(PA_OUT) HD3 Transmitter output 3rd harmonic distortion

-60

dBc

V(PA_OUT) THD Transmitter output total harmonic distortion

0.2

C(PA_IN)

Power amplifier input capacitance

PA_IN+ vs. VSS

(2)

PA_IN- vs. VSS

(2)

PSRR

Power supply rejection ratio

dc to 3 kHz

100

1 kHz

100 kHz

CL_TH

Current sense high threshold on CL pin

2.35

CL_RATIO

Ratio between PA_OUT and CL output current

Transmitter

V(TX_OUT) BIAS Transmitter output bias voltage - Rx mode

VCCA/2

V(TX_OUT) MAX Transmitter output maximum voltage swing

Maximum output level, no load

VCCA = 5 V

4.8

4.95

VCCA

V p-p

TXGAIN

Transmitter output digital gain range

-21

TX_GAIN TOL Transmitter output digital gain tolerance

-0.35

0.35

Table 4.

Electrical characteristics (continued)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

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