ST7538Q Просмотр технического описания (PDF) - STMicroelectronics

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ST7538Q

FSK power line transceiver

STMicroelectronics 

ST7538Q

Electrical characteristics

Table 4. Electrical characteristics (continued)

(AVdd = DVdd = +5V, PAVcc =+9 V, PAVss, SGND = DVss = 0V, -40°C ≤TA ≤ 85°C, TJ < 125 °C, fc = 86kHz,

other control register parameters as default value, unless otherwise specified)

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

HD2ATO

HD3ATO

Second Harmonic

Distortion on ATO

Third Harmonic Distortion

on ATO

VATO = 2VPP

-55

-42

dBc

-52

-49

dBc

IATOP

Output Transmitting

Current in programmable

current limiting

Rcl = 1.85kΩ; RLOAD =

1Ω (as in Figure 14)

250

310

370 mArms

Max Carrier Output AC

RCL = 1.t5kΩ

VATOP(AC) Voltage for each ATOP1

Vsense(AC) = 0V

3.5

4.6

6

Vpp

and ATOP2 pins

PAVcc ≥ V-----A----T-----O-----P----(---A----C-----) + 7.5V

2

VATOP(DC)

Output DC Voltage on

ATOP1 and ATOP2 pins

3.5

4.2

5

V

HD2ATOP

Second Harmonic

Distortion on each ATOP1

and ATOP2 pins

VATOP = 4VPP ,

PAVCC = 10V

No Load

VATOP = 4VPP ,

PAVCC = 10V

RLOAD =50Ω (Differential)

Carrier Frequency:

132.5KHz

-55

-42

dBc

-65

-53

dBc

HD3ATOP

Third Harmonic Distortion

on each ATOP1 and

ATOP2 pins

VATOP = 4VPP ,

PAVCC = 10V

No Load.

VATOP = 4VPP ,

PAVCC = 10V

RLOAD =50Ω (Differential)

Carrier Frequency:

132.5KHz

-56

-49

dBc

-65

-52

dBc

VATOP

Accuracy with Voltage

Control Loop Active

RCL = 1.75Ω;

Vsense(AC) = 0V

-1

+1

GST

GST

ALC Gain Step Control

loop gain step

0.6

1

1.4

dB

DRNG

ALC Dynamic Range

30

dB

VsenseTH

Voltage control loop

reference threshold on

Vsense pin

Figure 14

160

180

200

mVPK

VsenseHYS

Hysteresis on Voltage loop

reference threshold

Figure 14

±18

mV

VSENSE(DC)

Output DC Voltage on

VSENSE

1.865

V

VSENSE VSENSE Input Impedance

36

kΩ

11/44

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