TEF6890H/V2,557 NXP Semiconductors, TEF6890H/V2,557 Datasheet - Page 3

• Manufacturer Part Number: TEF6890H/V2,557
• Description: IC RADIO SIGNAL PROC 44-QFP
• Manufacturer: NXP Semiconductors
• Type: Car Signal Processorr

Specifications of TEF6890H/V2,557

• Applications: Automotive Audio
• Mounting Type: Surface Mount
• Package / Case: 44-MQFP, 44-PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935272793557; TEF6890H/V2; TEF6890H/V2

Philips Semiconductors
1
1.1
1.2
1.3
1.4
2003 Oct 21
High integration
No external components except coupling capacitors for
signal inputs and outputs
QFP44 package with small Printed-Circuit Board (PCB)
footprint.
Fast mode 400 kHz I
ranging from 2.5 to 5 V
Gated I
– Eases PCB layout (crosstalk)
– Allows mix of 400 kHz and 100 kHz busses
– Low bus load reduces crosstalk
– Buffered I/O circuit
– Supply voltage shift between both buses allowed.
Shortgate function offers easy control with automatic
gating of a single transmission; suited for TEA684x
Autogate function offers transparent microcontroller
control with automatic on/off gating (programmable
address).
FM stereo decoder with high immunity to birdy noise and
excellent pilot cancellation
Integrated IF roll-off correction controlled via I
De-emphasis selectable between 75 and 50 s via
I
New fully integrated AM noise blanker with excellent
performance
Fully integrated FM noise blanker with superior
performance.
Car radio integrated signal processor
2
C-bus.
FEATURES
General
I
Stereo decoder
Noise blanking
2
C-bus
2
C-bus loop through to tuner IC
2
C-bus, interfaces to logic levels
2
C-bus
3
1.5
1.6
FM weak signal processing with detectors for RF level,
Ultrasonic Noise (USN) and Wideband AM (WAM)
information
AM weak signal processing with detectors for level
information
AM processing with soft mute and High Cut Control
(HCC)
FM processing with soft mute, stereo blend and HCC
Setting of the sensitivity of the detectors and start and
slope of the control functions via I
Weather band de-emphasis
Level, USN and WAM read-out via I
quality detectors)
Full support of tuner AF update functions with TEA684x
tuner ICs, FM audio processing holds the detectors for
the FM weak signal processing in their present state
during RDS updating.
RDS/RBDS demodulator uses TEA684x reference
frequency, no external crystal necessary.
Weak signal processing
RDS demodulator
2
C-bus
Product specification
2
TEF6890H
C-bus (signal