tda6508 NXP Semiconductors, tda6508 Datasheet - Page 4

• Manufacturer Part Number: tda6508
• Description: 3-band Mixer/oscillator And Pll For Terrestrial Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
loop filter between pin CP and pin VTUNE as shown in
Fig.27. The tuning amplifier can supply up to 33 V (max.)
at pin VT for controlling any of the internal oscillators via
external tank circuits. The phase comparator can operate
at 62.5, 50 or 31.25 kHz with a 4 MHz crystal, depending
on the reference divider ratio of either 64, 80 or 128; see
Table 4. An externally sourced signal having a frequency
between 3.58 MHz and 4.43 MHz can be used as a
reference frequency for the internal crystal oscillator at any
of the reference divider ratios.
In test mode, port P3 will output either half the crystal
reference frequency (
frequency (
The device can be controlled according to the I
format; see Table 1. The in-lock flag bit FL is set to logic 1
when the PLL is locked. This flag is read from the status
byte on pin SDA during a READ operation; see Table 6
and Table 7.
4
Measured over full voltage and temperature ranges.
5
2005 Mar 25
V
I
f
P
T
T
TDA6508TT
TDA6508ATT
TDA6509TT
TDA6509ATT
TDA6509HN
TDA6509AHN
CC
xtal
stg
amb
CC
tot
3-band mixer/oscillator and PLL for
terrestrial tuners
NUMBER
SYMBOL
QUICK REFERENCE DATA
ORDERING INFORMATION
TYPE
1
2
f
div
); see Table 5.
supply voltage
supply current
crystal oscillator frequency
total power dissipation
IC storage temperature
ambient temperature
TSSOP32
TSSOP32
HVQFN32
NAME
1
2
f
ref
) or half the reference divider
PARAMETER
plastic thin shrink small outline package; 32 leads body width 6.1 mm
plastic thin shrink small outline package; 32 leads body width 6.1 mm
plastic thermal enhanced very thin quad flat package; no leads;
32 terminals; body 5
2
C-bus
5
V
R
4
CC
0.85 mm
xtal
DESCRIPTION
Automatic frequency control is provided using an internal
Analog-to-Digital Converter controlled by the voltage on
pin ADC. The ADC code is read during a READ operation;
see Table 8.
The device requires to be addressed by five sequential
serial bytes (including the address byte) via the I
set the crystal oscillator frequency, program the five ports
and to set the charge-pump current; see Table 1. The
address byte can have one of four possible device
addresses which are selected by applying a specific
voltage to pin AS; see Table 3.
= 5 V; all ports off
= 25
PACKAGE
CONDITIONS
to 300
TDA6508; TDA6508A;
TDA6509; TDA6509A
4.5
43
3.58
MIN.
40
20
5
58
4.0
290
TYP.
Product specification
5.5
74
4.43
385
MAX.
150
85
SOT487-1
SOT487-1
SOT617-1
VERSION
2
C-bus to
V
mA
MHz
mW
UNIT
C
C