ST7570TR datasheet(10/26 Pages) STMICROELECTRONICS

Part #	ST7570TR

Description	S-FSK power line networking system-on-chip

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Electrical characteristics

ST7570

10/26

Doc ID 17526 Rev 2

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=50Ω, T = 25°C

See Figure 3

-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)

10

pF

PA_IN- vs. VSS (3)

10

pF

PSRR

Power supply rejection ratio

50 Hz

100

dB

1 kHz

93

dB

100 kHz

70

dB

CL_TH

Current sense high threshold on CL

2.25

2.35

2.4

V

CL_RATIO

Ratio between PA_OUT and CL

output current.

80

Transmitter

V(TX_OUT) BIAS

Transmitter output bias voltage - Rx

mode

VCCA/

2

V

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

0

31

TX_GAIN TOL

Transmitter output digital gain

tolerance

-0.35

0.35

dB

R(TX_OUT)

Transmitter output resistance

1

k

Ω

V(TX_OUT) HD2

Transmitter output 2nd harmonic

distortion

V(TX_OUT) = 4.5

Vpkpk (typ.), no load,

T = 25°C

-72

-55

dBc

V(TX_OUT) HD3

Transmitter output 3rd harmonic

distortion

-70

-67

dBc

V(TX_OUT) THD

Transmitter output Total harmonic

distortion

0.1

0.2

%

Receiver

V(RX_IN) MAX

Receiver input maximum voltage

VCC = 18 V

16

V p-p

V(RX_IN) BIAS

Receiver input bias voltage

VCCA/

2

V

Z(RX_IN)

Receiver input Impedance

10

k

Ω

V(RX_IN) MIN

Receiver input sensitivity

Bit rate = 1200 bps @

50 Hz,

BER = 10-3, SNR =

20 dB

45

dBµV

rms

Table 5.

Electrical characteristics (continued)

Symbol

Parameter

Note

Min.

Typ.

Max.

Unit

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