TEA5768HL/V2,157 NXP Semiconductors, TEA5768HL/V2,157 Datasheet - Page 8

• Manufacturer Part Number: TEA5768HL/V2,157
• Description: Tuners LO-PWR FM STEREO
• Manufacturer: NXP Semiconductors

Specifications of TEA5768HL/V2,157

• Mounting Style: SMD/SMT
• Package / Case: SOT-358
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935272968157 TEA5768HLBD

Philips Semiconductors
7
7.1
The LNA input impedance together with the LC RF input
circuit defines an FM band filter. The gain of the LNA is
controlled by the RF AGC circuit.
7.2
The FM quadrature mixer converts the FM RF
(76 MHz to 108 MHz) to an IF of 225 kHz.
7.3
The varactor tuned LC VCO provides the Local Oscillator
(LO) signal for the FM quadrature mixer. The VCO
frequency range is 150 MHz to 217 MHz.
7.4
The crystal oscillator can operate with a 32.768 kHz clock
crystal or a 13 MHz crystal. The temperature drift of
standard 32.768 kHz clock crystals limits the operational
temperature range from 10 C to +60 C.
2004 Sep 13
Low-power FM stereo radio for
handheld applications
FUNCTIONAL DESCRIPTION
Low-noise RF amplifier
FM mixer
VCO
Crystal oscillator
VCOTANK1
VCOTANK2
V
CC(VCO)
CPOUT
CLOCK
DGND
DATA
V
CCD
1
2
3
4
5
6
7
8
Fig.2 Pin configuration.
TEA5768HL
7
The PLL synthesizer can be clocked externally with a
32.768 kHz, a 6.5 MHz or a 13 MHz signal via pin XTAL2.
The crystal oscillator generates the reference frequency
for:
7.5
The PLL synthesizer tuning system is suitable to operate
with a 32.768 kHz or a 13 MHz reference frequency
generated by the crystal oscillator or applied to the IC from
an external source. The synthesizer can also be clocked
via pin XTAL2 at 6.5 MHz. The PLL tuning system can
perform an autonomous search tuning function.
7.6
The RF AGC prevents overloading and limits the amount
of intermodulation products created by strong adjacent
channels.
The reference frequency divider for the synthesizer PLL
The timing for the IF counter
The free-running frequency adjustment of the stereo
decoder VCO
The centre frequency adjustment of the IF filters.
PLL tuning system
RF AGC
001aab494
24
23
22
21
20
19
18
17
LIMDEC2
LIMDEC1
TIFC
V
MPXO
TMUTE
V
V
ref
AFR
AFL
TEA5768HL
Product specification