Block diagram and pin description TDA7703
8/32 Rev 1
15 LNAIN2 AM LNA input 2
nd
stage
16 LNAOUT2 AM LNA output
17 LNADEC2 AM LNA decoupling 2nd stage
18 AMMIXIN AM mixer input
19 VREF165 1.65 V reference voltage decoupling
20 VREFDEC 3.3 V reference voltage decoupling
21 GND-DIG Digital GND
22 VCC-DIG 5 V supply for digital logic
23 VCCREG1V2 VCC of 1.2 V regulator
24 REG1V2 1.2 V regulator output
25 VDD-3V3 3.3 V VDD output / decoupling
26 SDA I
2
C bus data
27 SCL I
2
C bus clock
28 VDD-1V2 1.2 V DSP supply
29 BUSSET Bus communication setup
30 RSTN Reset pin (active low)
31 VDD-1V2 1.2 V DSP supply
32 GND-1V2 Digital GND for 1.2 V VDD
33 VCC-DAC 5 V supply of audio DAC
34 OSCOUT Xtal osc output
35 OSCIN Xtal osc input
36 GND-DAC Audio DAC GND
37 DACOUTL Audio output left
38 DACOUTR Audio output right
39 GND-IFADC IF ADC GND
40 VCC-IFADC 5 V supply of IF ADC
41 VCC-PLL 5 V supply of PLL
42 GND-PLL PLL GND
43 VCC-VCO 5 V supply of VCO
44 GND-VCO VCO GND
Table 2. Pin description (continued)
Pin # Pin name Description
