TDA8735 Datasheet, PDF (2/16 Pages) NXP Semiconductors – PLL frequency synthesizer

Philips Semiconductors
PLL frequency synthesizer
Product specification
TDA8735
FEATURES
• Complete 30 MHz single-chip tuning system
• Loop amplifier included
• 2-level current amplifier (charge pump) for adjusting the
loop gain
• A powerful digital memory phase detector
• Programmable reference frequencies of 1 kHz, 10 kHz
or 25 kHz
• I²C-bus interface
• Programmable address select input
• Software controlled switch output.
APPLICATIONS
• Satellite sound receiver
• Radio receiver: LW, MW and SW.
GENERAL DESCRIPTION
The TDA8735 is a single-chip PLL synthesizer designed
for satellite receivers. The device can be set to two
different addresses which can be used in applications
where independently tuned VCOs are required.
To adapt to different frequency accuracy, 3 reference
frequencies are selectable via the I²C-bus. The charge
pump current can be set to 2 values with a ratio of 1 : 100
via the I²C-bus.
A programmable switch (open-collector) is integrated to
enable mode or normal switching, or other types of
application.
QUICK REFERENCE DATA
SYMBOL
V_CC1
V_CC2
I_CC1
I_CC2
f_i(max)
f_i(min)
V_i(rms)
P_tot
T_amb
PARAMETER
supply voltage (pin 3)
supply voltage (pin 16)
supply current (pin 3)
supply current (pin 16)
maximum input frequency
minimum input frequency
input voltage (RMS value)
total power dissipation
operating ambient temperature
CONDITIONS
outputs unloaded
outputs unloaded
MIN.
4.5
V_CC1
12
0.2
30
−
30
−
−30
TYP.
5.0
8.5
20
0.5
−
−
−
0.14
−
MAX.
5.5
12
28
1
−
512
500
−
+85
UNIT
V
V
mA
mA
MHz
kHz
mV
W
°C
ORDERING INFORMATION
TYPE
NUMBER
TDA8735
TDA8735T
NAME
DIP16
SO16
PACKAGE
DESCRIPTION
plastic dual in-line package; 16 leads (300 mil); long body
plastic small outline package; 16 leads; body width 7.5 mm
VERSION
SOT38-1
SOT162-1
1998 Oct 23
2