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SAA7724H/N106, SAA7730HV/116, SAA7740H

Table of contents:
Info of SAA7724H/N106
Info of SAA7730HV/116
Info of SAA7740H

SAA7724H/N106, SAA7730HV/116, SAA7740H Selling Leads, Datasheet

MFG:NXP Package Cooled:QFP D/C:09+

SAA7724H/N106, SAA7730HV/116, SAA7740H Picture

SAA7724H/N106, SAA7730HV/116, SAA7740H Datasheet download

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Part Number: SAA7724H/N106

MFG: NXP

Package Cooled: QFP

D/C: 09+

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SAA7740H General Description

The SAA7740H is a function-specific digital signal processor. The device is capable of performing processing for listening-environments such as equalization, hall-effects, reverberation, surround-sound and digital volume/balance control. The SAA7740H can also be reconfigured (in a dual and quad filter mode) so that it can be used as a digital filter with programmable characteristics.

For reasons of silicon efficiency, the SAA7740H realises most functions directly in hardware. The flexibility exists in the possibility to download function parameters, correction coefficients and various configurations from a host microcontroller (see Fig.1). The parameters can be passed in real time and all functions can be switched on simultaneously.

The communication with a host microcontroller conforms with the standard I²C-bus format. The SAA7740H accepts 2 digital stereo signals in the I2S-bus format at audio sampling frequency (fas) and provides 2 digital stereo outputs.

SAA7740H Maximum Ratings

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
V_DD V_DD I_IK I_OK I_O I_DD I_SS LTCH P_O P_tot T_stg T_amb V_es	DC supply voltage (each supply pin) voltage difference between VDD and VDDX DC input clamp diode current DC output clamp diode current (output type 4 mA) DC output sink or source current (output type 4 mA) DC supply current per pin DC supply current per pin latch-up protection power dissipation per output total power dissipation storage temperature operating ambient temperature electrostatic discharge	V_I < -0.5 V or V_I> V_DD + 0.5 V V_O < -0.5 V or V_O > V_DD + 0.5 V -0.5 < V_O < V_DD+ 0.5 V CIC specification/test method note 1 note 2	-0.5 - - - - - - 100 - - -65 -40 -3000 -300	+6.5 550 ±10 ±20 ±20 50 50 - 100 1 +150 +85 +3000 +300	V mV mA mA mA mA mA mA mW W °C °C V V

Notes
1. Human body model: C = 100 pF; R = 1.5 k.
2. Machine model: C = 200 pF; L = 2.5 mH; R = 0 .

SAA7740H Features

· Two digital inputs and two digital outputs in the I²S-bus format (i.e. 4 audio channels)
· Independent input/output interfaces
· Slave input/output interfaces
· Slave processing
· I2C-bus microcontroller interface
· DC filtering at the inputs
· One programmable 2nd-order digital filter unit
· Two multiply accumulate processor units (24 ×16-bit/MAC)
· DRAM interface and address computation unit for external delay lines
· On-chip coefficient and external delay line address storage
· Hardware controlled soft mute via the MUTE pin
· Hardware controlled soft demute via the RST pin
· Operating ambient temperature; -40 to +85 °C. Software
· 5-band parametric equalizer with selectable centre frequency, slope setting and boost/cut gain settings from -12 to +12 dB
· Stereo width control from mono to stereo to spatial stereo
· Stereo Hall-effects for field acoustics, such as concert halls, with 8 coefficients and 8 delayed taps per channel
· External delay line processing for delays up to 1 second
· Reverberation with selectable reverberation time (up to 5 seconds) and energy
· Three different surround sound programs to obtain a spatial effect on 4 loudspeakers
· Passive DOLBY surround processing with the addition of an external dynamic noise reduction IC
· Karaoke processing
· Dual 16th-order correction filtering
· Quad 8th-order correction filtering
· Digital volume and balance control
· Soft controlled soft mute/demute via the microcontroller interface
· Input switching matrix
· Output rear and front switching matrix.

SAA7740H Typical Application

· Digital amplifiers
· Audio combination sets
· Car audio systems
· TV audio channels.

SAA7740H Connection Diagram

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