ST7580 datasheet(10/33 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)

VCC=18 V,

V(PA_OUT)

= 14 V p-p (typ.),

V(PA_OUT) BIAS = VCC/2,

RLOAD=50

- See Figure 4

-3%

+3%

V(PA_OUT) HD2

Power amplifier output 2nd harmonic distortion

-70

-63

dBc

V(PA_OUT) HD3

Power amplifier output 3rd harmonic distortion

-66

-63

dBc

V(PA_OUT) THD

Power amplifier output total harmonic distortion

0.1

0.15

C(PA_IN)

Power amplifier input capacitance

PA_IN+ vs. VSS (3)

PA_IN- vs. VSS (3)

PSRR

Power supply rejection ratio

50 Hz

100

1 kHz

100 kHz

CL_TH

Current sense high threshold on CL pin

2.25

2.35

2.4

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

TX_GAIN = 31, no load

4.8

4.95

VCCA

V p-p

TX_GAIN

Transmitter output digital gain range

TX_GAIN TOL

Transmitter output digital gain tolerance

-0.35

0.35

R(TX_OUT)

Transmitter output resistance

V(TX_OUT) HD2

Transmitter output 2nd harmonic distortion

V(TX_OUT) = V(TX_OUT)

Max. no load, T = 25 °C

-72

-67

dBc

Table 5.

Electrical characteristics (continued)

Symbol

Parameter

Note

Min.

Typ.

Max.

Unit

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