ucb1200 NXP Semiconductors, ucb1200 Datasheet - Page 32

• Manufacturer Part Number: ucb1200
• Description: Advanced Modem/audio Analog Front-end
• Manufacturer: NXP Semiconductors

Philips Semiconductors
POWER ROUTING STRATEGY
The UCB1200 has nine power supply pins, since the UCB1200 contains five power supply regions within the circuit. The
analog and digital parts have their separate power supplies to reduce the interference between these parts. The speaker
driver circuit is powered separately (V
has its own ground pin (V
and the touch screen switch matrix, which has relatively large and fluctuating current consumption and the remaining
parts of the analog circuit.
1998 Jul 22
Advanced modem/audio analog front-end
Fig.28 Recommended power supply connection strategy, single power supply systems.
vddd
SSA3
vssd
37
32
). This separation in the analog part reduces the interference between the speaker driver
UCB1200
DDA2
vssd
5
/V
SSA2
48
vssa1
vddd
) from the other analog circuit parts and the touch screen switch matrix
18
vdda2
vdda1
vssa2
vssa3
32
17
10
26
7
Product specification
3.3V supply
UCB1200