ST7538Q STMicroelectronics, ST7538Q Datasheet - Page 40

• 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

Auxiliary analog and digital functions
6.12
40/44
Power-up procedure
To ensure ST7538Q proper power-Up sequence, PAVcc, AVdd and DVdd Supply has to fulfil
the following rules:
PAVcc rising slope must not exceed 100V/ms.
When DVdd is below 5V/3.3V and AVdd is below 5V: 100mV < PAVcc-AVdd , PAVcc-DVdd <
1.2V.
When AVdd and DVdd supplies are connected to VDC the above mentioned relation is
guarantied if VDC load < 100mA and if the filtering capacitor on VDC < 100uF.
If DVdd is not forced to 5V, the Digital I/Os are internally supplied at 3.3 V and if DVdd load <
50mA and the filtering capacitor on DVdd < 100uF the second relation can be ignored .
Figure 24. Power-UP sequence
ST7538Q