TDA7417 Просмотр технического описания (PDF) - STMicroelectronics
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TDA7417 Datasheet PDF : 34 Pages
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TDA7417
Car radio audio processor
Features
■ Input Multiplexer
– QD: quasi-differential stereo inputs
– FD: full-differential stereo inputs
– Mono: Mono input
– SE1: stereo single-ended input
– SE2: stereo single-ended input
– In-Gain 0 to 15dB, 1dB step
– internal offset-cancellation (AutoZero)
■ IN/OUT control
– Selectable full-differential stereo inputs or
Bass output
■ Loudness
– 2nd order frequency response
– programmable center frequency
(400Hz/800Hz/2400Hz)
– 15dB with 1dB steps
– soft-step control with programmable blend
times
– selectable low & high frequency boost
■ Volume
– +15dB to -79dB with 1dB step resolution
– soft-step control with programmable blend
times
– multi-step control
■ Bass
– 2nd order frequency response
– center frequency programmable in 4 steps
(60Hz/80Hz/100Hz/200Hz)
– Q programmable 1.0/1.25/1.5/2.0
– DC gain programmable
– -15 to 15dB with 1dB resolution
– soft-step control with programmable blend
times
TQFP32
■ Treble
– 2nd order frequency response
– center frequency programmable in 4 steps
(10KHz/12.5KHz/15KHz/17.5KHz)
– -15 to 15dB with 1dB resolution
■ High pass
– 2nd order frequency response
– center frequency programmable in 3 steps
(80Hz/120Hz/160Hz)
■ Speaker
– independent soft step speaker controls,
+15dB to -79dB with 1dB steps
– Independent programmable mix input with
50% mixing ratio for front speakers
– direct mute
– multi-step control
■ Mute Functions
– digitally controlled SoftMute with 3
programmable mute-times
(0.48ms/0.96ms/123ms)
Description
The TDA7417 is an high performance signal
processor specifically designed for car radio
applications with fully integrated audio filters.
The digital control allows a full programming of
the audioprocessor in a wide range of filter
characteristics.
By using BICMOS-process low distortion and low
noise are obtained.
Table 1.
Device summary
Order codes
TDA7417
TDA7417TR
Package
TQFP32
TQFP32
Packing
Tray
Tape & reel
June 2007
Rev 2
1/34
www.st.com
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