
UMTS/HSDPA Module
UC15 Hardware Design
UC15_Hardware_Design Confidential / Released 47 / 72
In order to improve the accuracy of ADC, the trace of ADC should be surrounded by ground.
Table 19: Pin Definition of the ADC
Pin name
Pin NO.
Description
ADC0
41
General purpose analog to digital converter.
ADC1
40
General purpose analog to digital converter.
The following table describes the characteristic of the ADC function.
Table 20: Characteristic of the ADC
Item
Min
Typ.
Max
Unit
Conditions/Comments
ADC0 voltage range
0
2.1 V Analog Vdd=ADC reference
2.4MHZ sample rate
ADC1 voltage range
0
2.1 V
ADC resolution
12
bits
Offset error
-4
+40
LSB
Analog Vdd=ADC reference
2.4MHZ sample rate
Gain error
-2.5
+2.5
%
Intergral
nonlinearity
-8
+8
LSB
Differential
nonlinearity
-4
+4
LSB
Input serial resistance
2
KR
Sample and hold switch
resistance
Input
capacitance
53
PF
3.14. Network Status Indication
The network indication pins can be used to drive a network status indicator LED. The module provides
one pin which is NETLIGHT. The following tables describe pin definition and logic level changes in
different network status.