Datasheet

Block diagram LNBH23
4/32 Doc ID 13356 Rev 8
1 Block diagram
Figure 1. Block diagram
SDA SCL
LNBH23
ADDR
A-GND
I²C Diagnostics
I²C interface
DSQIN
Vup
VoRX
VoTX
LX
22KHz
Oscill.
PWM Controller
Rsense
EN
VSEL
Linear Post-reg
+Modulator
+Protections
+Diagnostics
ITEST
TTX
EN
VSEL
VOUT Control
EXTM
P-GND
Preregulator
+U.V.lockout
+P.ON reset
BypVcc Vcc-LISEL TTX
TEN
DSQOUT
DETIN
22KHz Tone
Amp. Diagn.
22KHz Tone
Freq. Detector
TTX
VCTRL
SDA SCL
LNBH23
ADDR
A-GND
I²C Diagnostics
I²C interface
DSQIN
Vup
VoRX
VoTX
LX
22KHz
Oscill.
22KHz
Oscill.
PWM Controller
Rsense
EN
VSEL
Linear Post-reg
+Modulator
+Protections
+Diagnostics
ITEST
TTX
EN
VSEL
VOUT Control
EXTM
P-GND
Preregulator
+U.V.lockout
+P.ON reset
BypVcc Vcc-LBypVcc Vcc-LISEL TTX
TEN
DSQOUT
DETIN
22KHz Tone
Amp. Diagn.
22KHz Tone
Freq. Detector
TTXTTX
VCTRL