TEA6845H/V2,557 NXP Semiconductors, TEA6845H/V2,557 Datasheet - Page 3

• Manufacturer Part Number: TEA6845H/V2,557
• Description: IC CAR RADIO TUNER 64-QFP
• Manufacturer: NXP Semiconductors

Specifications of TEA6845H/V2,557

• Frequency: AM, FM, WB
• Modulation Or Protocol: AM, FM
• Applications: AM/FM Radio Receiver
• Current - Receiving: 78mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 7.8 V ~ 9.2 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 935262638557; TEA6845H/V2; TEA6845H/V2

Philips Semiconductors
1
3
2003 Feb 04
TEA6845H
FM mixer for conversion of FM RF from 65 to 108 MHz
to IF of 10.7 MHz; the mixer provides inherent image
rejection
FM RF mixer can be set to receive weather band radio
up to 162.55 MHz; weather band radio flag output
AM mixer 1 for conversion of AM RF to AM IF1 of
10.7 MHz
LC tuner oscillator providing mixer frequencies for
FM mixer and AM mixer 1
AM mixer 2 for conversion of AM IF1 to AM IF2 of
450 kHz
Crystal oscillator providing mixer frequencies for
AM mixer 2 and reference for synthesizer PLL, IF count,
timing for Radio Data System (RDS) update and
reference frequency for car audio signal processor ICs
Fast synthesizer PLL tuning system with local control for
inaudible RDS updating
Timing function for RDS update algorithm and control
signal output for car audio signal processor ICs
(TEA688x, SAA77xx or TEF689x)
Digital auto alignment circuit for conversion of
LC oscillator tuning voltage to controlled alignment
voltage of FM antenna tank circuit
AGC PIN diode drive circuit for FM RF AGC; AGC
detection at FM mixer input; the AGC PIN diode drive
can be activated by the I
function; AGC threshold is a programmable and keyed
function switchable via the I
FM IF linear amplifiers with high dynamic input range
FM quadrature demodulator with automatic centre
frequency adjustment and Total Harmonic Distortion
(THD) compensation
New In Car Entertainment (NICE) car radio
NUMBER
FEATURES
ORDERING INFORMATION
TYPE
QFP64
NAME
2
C-bus as a local or distance
2
C-bus
plastic quad flat package; 64 leads (lead length 1.95 mm);
body 14
20
2.8 mm
3
DESCRIPTION
2
The TEA6845H is a single IC with car radio tuner for
AM and FM intended for microcontroller tuning with the
I
2
PACKAGE
C-bus. It provides the following functions:
Level detector for AM and FM with temperature
compensated output voltage; starting point and slope of
level output is programmable via the I
AM RF PIN diode drive circuit; AGC threshold detection
at AM mixer 1 and IF2 AGC input; threshold is
programmable via the I
demodulator
AM AF output switchable to provide AM IF2 for
AM stereo decoder
AM noise blanker with blanking at AM IF2
Several test modes available for fast IC and system
tests.
AM double conversion receiver for LW, MW and SW
(31 m, 41 m and 49 m bands) with IF1 = 10.7 MHz and
IF2 = 450 kHz
FM single conversion receiver with integrated image
rejection for IF = 10.7 MHz capable of selecting US FM,
US weather, Europe FM, East Europe FM and Japan
FM bands.
GENERAL DESCRIPTION
2
C-bus; AM IF2 AGC and
Product specification
TEA6845H
2
C-bus
VERSION
SOT319-2