BU8763FV
BU8763FV is Melody LSI for Cellular Phone manufactured by ROHM.
Features
1) Generating 3 waves, Controlled by CPU 2) Selectable master clock (5.376MHz / 2.688MHz) 3) Changeable parameter for wave generate 4) Including DTMF create function 5) Changeable Sine wave or special square wave 6) Serial control from CPU 7) Include smoothing filter (fc=20KHz) 8) SSOP-B16 package
!Absolute maximum ratings (Ta=25°C)
Parameter Symbol DVDD AVDD VDIN VAIN Pd Tstg Topr
+
Limits
- 0.3 to +4.5
- 0.3 to +4.5 DVSS- 0.3 to DVDD+0.3 AVSS- 0.3 to AVDD+0.3 450∗
- 50 to +125
- 20 to +70
Unit V V V V m W °C °C
Digital supply voltage Analog supply voltage Input voltage for digital Input voltage for analog Power dissipation Storage temperature range Operating temperature range
∗ To use at temperature higher than 25 C, derate 4m W / C, PCB(70mm 70mm, d=1.6mm glass epoxy)
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BU8763FV munications
!Block diagram
TEST1
TEST2
TEST3
TEST4
DGND
TEST CIRCUIT
WAVE GEN 1(h) WAVEFORM GENERATOR WAVE GEN 2(m) WAVE GEN 3(l)
ATT 1 ATT 2 ATT 3
+
SMOOTHING FILTER
CLOCK GENERATOR
CONTROL...
