ST7LNB0V2Y0 STMicroelectronics, ST7LNB0V2Y0 Datasheet - Page 7

• Manufacturer Part Number: ST7LNB0V2Y0
• Description: DiSEqC™ 2.1 Slave Microcontroller for LNBs and Switchers
• Manufacturer: STMicroelectronics

ST7LNB0V2Y0
2
ST7LNB0V2Y0 implementation
Figure 3
Figure 3.
1. The divider chain connected to the DRX pin must have the following resistance values: 330KΩ and 100KΩ.
2. The reset circuitry linked to the RESET pin is optional. In fact the ST7LNB0V2Y0 has an internal voltage
3. The DiSEqC signalling must have a tone frequency of 2 2kHz (±20%) and an amplitude exceeding 150 mV
4. When the LVD is enabled (default state), it is mandatory not to connect a pull-up resistor. A 10 nF pull-
level detector (LVD) which generates a static reset when the V
4.1 V.
peak to peak.
down capacitor is recommended to filter noise on the reset line.
F-CONNECTOR
shows a typical application circuit for the ST7LNB0V2Y0.
ST7LNB0V2Y0 typical application circuit
330K
100K
180pF
(Uncommitted SW)
LNB / SWITCHER
10n
CONTROL
OPTIONAL
4.7K
(4)
ST7LNB0V2Y0
VSS
VDD
RESET
DRX
OP5
OP6
OP7
OP8
DTX
SBY
OP1
OP2
OP3
OP4
NC
NC
DD
supply is below a threshold voltage of
ST7LNB0V2Y0 implementation
SBY
LNB / SWITCHER
(Committed SW)
CONTROL
2N2222
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