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3.6.3 Auxiliary Section
1. This section includes an Automatic Frequency Control(AFC) DAC, voltage reference
buffers,an Auxiliary ADC, and light controllers.•AFC DAC: 13 bits
2. This section also contains AUX ADC and Voltage Reference
• IDAC: 10 bits
• The Auxiliary ADC provides :
-Two differential inputs for temperature sensing.
-A differential input for the battery charger current sensor
AD6537B
CSFS
Control
CSDI
Serial
CSDO
Port
AFC
DAC
Voltage
Reference
Aux
ADC
Figure 3-14 AD6537B AUXILIARY SECTION
REFTXCM
- 31 -
3. TECHNICAL BRIEF
AFCDAC
REFBB
REFOUT
REFCHG
REF
TEMP1
TEMP2
AUXADC1
AUXADC2
AIN1P
AIN2P
BATTYPE
ISENSE
VBATSENSE
LIGHT1
Light
LIGHT2
Controllers
LIGHT3
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