ST7538Q STMicroelectronics, ST7538Q Datasheet - Page 29

• Manufacturer Part Number: ST7538Q
• Description: IC TXRX FSK POWER LINE 44-TQFP
• Manufacturer: STMicroelectronics
• Type: Transceiverr

Specifications of ST7538Q

• Number Of Drivers/receivers: 1/1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP Exposed Pad, 44-eTQFP, 44-HTQFP, 44-VQFP
• For Use With: 497-5484 - BOARD EVAL ST7538 PWR LINE TXRX
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Protocol: -
• Other names: 497-5525

ST7538Q
●
Figure 16. PLI bridge topology
Integrated Power Line Interface (PLI)
The Power Line Interface (PLI) is a double CMOS AB Class Power Amplifier with the
two outputs (ATOP1 and ATOP2) in opposition of phase.
Two are the possible configuration:
- Single Ended Output (ATOP1).
- Bridge Connection
The Bridge connection guarantee a Differential Output Voltage to the load with twice
the swing of each individual Output. This topology virtually eliminates the even
harmonics generation.
The PLI requires, to ensure a proper operation, a regulated and well filtered Supply
Voltage. PAVcc Voltage must fulfil the following formula to work without clipping
phenomena:
To allow the driving of an external Power Line Interface, the output of the ALC is
available even on ATO pin. ATO output has a current capability much lower than ATOP1
and ATOP2.
INVERTER
ALC
CURRENT
VOLTAGE
LOOP
LOOP
80 pF
PAVcc
D03IN1422
≥
VATOP AC
----------------------------------- -
ATOP2
ATOP1
Vsense
CL
PAVss
2
(
5.6nF
RCL
)
+
7.5V
R1
R2
Vout
LOAD
Functional description
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