TEF6721HL/V1S,518 NXP Semiconductors, TEF6721HL/V1S,518 Datasheet - Page 7

• Manufacturer Part Number: TEF6721HL/V1S,518
• Description: IC FRONT END DGTL CAR RAD 64LQFP
• Manufacturer: NXP Semiconductors

Specifications of TEF6721HL/V1S,518

• Modulation Or Protocol: AM, FM, WB
• Applications: AM/FM Radio Receiver
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 5V, 8.5V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Frequency: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Current - Receiving: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 935288831518

Philips Semiconductors
7. Functional description
TEF6721HL_4
Product data sheet
7.1 FM in-phase/quadrature-phase mixer
7.2 Buffer output for weather band flag
7.3 VCO
7.4 Crystal oscillator
Table 3:
The FM quadrature mixer converts FM RF (64 MHz to 108 MHz and
162.4 MHz to 162.55 MHz) to an IF of 10.7 MHz. It provides inherent image rejection and
high dynamic range. The image rejection can be switched from low injection Local
Oscillator (LO) to high injection LO via the I
increased by 6 dB via the I
be lowered by 6 dB to prevent the mixer from being overloaded.
The buffer output (pin WBFLAG) is HIGH for weather band mode.
The varactor tuned LC oscillator provides the local oscillator signal for both FM and AM
mixers. It has a frequency range from 159.9 MHz to 248.2 MHz.
The crystal oscillator provides a 20.5 MHz signal that is used for:
Symbol
SCL
IFAGCLSB
IFAGCMSB
SWPORT2
V
GND
V
XTAL1
XTAL2
XTALGND
VDAC
IREF
i.c.
IFOUT1
IFOUT2
•
•
DDA5
DDA6
Reference frequency for frequency synthesizer PLL
Timing signal for the Radio Data System (RDS) update algorithm.
Pin description
Pin
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Rev. 04 — 20 December 2005
…continued
2
C-bus. In this case the threshold of the FM keyed AGC has to
Description
I
Least Significant Bit (LSB) input for IF AGC amplifier gain setting
from IF DSP
Most Significant Bit (MSB) input for IF AGC amplifier gain setting
from IF DSP
software programmable port 2
analog supply voltage 5 (8.5 V) for on-chip power supply
ground
analog supply voltage 6 (5 V) for on-chip power supply
crystal oscillator 1
crystal oscillator 2
crystal oscillator ground
Digital-to-Analog Converter (DAC) output voltage for crystal
oscillator frequency pulling
reference current for power supply
internally connected; connect to ground
IF AGC amplifier output 1
IF AGC amplifier output 2
2
C-bus Serial Clock (SCL) line input
2
C-bus. The mixer conversion gain can be
Car radio tuner front-end for digital IF
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
TEF6721HL
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