TEA6849H/V1 NXP Semiconductors, TEA6849H/V1 Datasheet - Page 9

• Manufacturer Part Number: TEA6849H/V1
• Description: Tuners NICE/PACS SONY
• Manufacturer: NXP Semiconductors

Specifications of TEA6849H/V1

• Bus Type: I2C
• Maximum Agc: 89 dB
• Maximum Frequency: 9.99 MHz, 108 MHz
• Minimum Frequency: 5.73 MHz, 65 MHz
• Modulation Technique: AM, FM
• Mounting Style: SMD/SMT
• Package / Case: LQFP-80
• Function: Radio
• Noise Figure: 16 dB, 4.5 dB
• Operating Supply Voltage: 8.5 V
• Supply Voltage (min): 8 V
• Supply Voltage (max): 9 V
• Minimum Operating Temperature: - 40 C
• Maximum Operating Temperature: + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TEA6849H/V1,557

Philips Semiconductors
7
7.1
7.1.1
The varactor tuned VCO provides the local oscillator signal
for both FM and AM mixer 1. It has a frequency range of
162.9 to 248.2 MHz.
7.1.2
Fast synthesizer PLL tuning system with local control for
inaudible RDS updating.
7.1.3
The crystal oscillator provides a 20.5 MHz signal that is
used for:
7.2
To reduce the number of manual alignments in production
the following I
(DAA) functions are included:
2003 Dec 19
Reference frequency for frequency synthesizer PLL
Local oscillator for AM mixer 2 and FM mixer 2
Reference frequency for the IF counter
Timing signal for the RDS update algorithm
Reference frequency (75.368 kHz) for the TEA688x (car
audio signal processor - CASP) or TEF689x (car radio
integrated signal processor - CRISP).
FM RF DAA
– 7-bit DAA circuitry for the conversion of the VCO
FM and AM level DAA
– Level DAA circuitry for alignment of slope (3-bit) and
IF2 centre DAA
– Centre frequency alignment (7-bit) of integrated
New In Car Entertainment car radio tuner IC with
Precision Adjacent Channel Suppression (NICE-PACS)
FUNCTIONAL DESCRIPTION
tuning voltage to a controlled alignment voltage for
the FM antenna tank circuit
starting point (5-bit) of the level curve
FM IF2 dynamic selectivity.
Oscillators
DAA
VCO
PLL
C
RYSTAL OSCILLATOR
2
C-bus controlled Digital Auto Alignment
9
7.3
7.3.1
FM quadrature mixer converts FM RF (65 to 108 MHz and
weather band) to IF of 10.7 MHz. The FM mixer provides
inherent image rejection and high RF sensitivity.
It is capable of tuning the US FM, US weather,
Europe FM, Japan FM and East Europe FM bands:
7.3.2
The buffer output on pin WBFLAG is HIGH for weather
band mode.
7.3.3
The AGC threshold is programmable and the keyed AGC
function is switchable via the I
occurs at the input of the first FM mixer. If the keyed AGC
function is activated, the AGC is keyed only by the narrow
band level. The AGC PIN diode drive can be activated via
the I
sources a constant 10 mA current into the FM PIN diode in
AM mode.
7.3.4
The FM IF amplifier provides 18 dB amplification with high
linearity over a wide dynamic range.
7.3.5
The FM mixer 2 converts 10.7 MHz FM IF1 to 450 kHz
FM IF2 in I and Q phase to achieve image rejection in the
demodulator.
US FM = 87.9 to 107.9 MHz
US weather FM = 162.4 to 162.55 MHz
Europe FM = 87.5 to 108 MHz
Japan FM = 76 to 91 MHz
East Europe FM = 65 to 74 MHz.
2
C-bus as a local function for search tuning. The AGC
FM signal channel
FM
B
(
FM
FM IF
FM
PIN
UFFER OUTPUT FOR WEATHER BAND FLAG
MIXER
KEYED
MIXER
WBFLAG)
AMPLIFIER
1
2
AGC
2
C-bus. AGC detection
Product specification
TEA6849H