SA3229 Datasheet, PDF (2/16 Pages) ON Semiconductor – Preconfigured DSP System

RHYTHM SA3229
• Eight Biquadratic Filters
• 16 kHz or 8 kHz Bandwidth
• Four Fully Configurable Memories with Audible
Memory Change Indicator
• 96 dB Input Dynamic Range with HRX Headroom
Extension
• 128−bit Fingerprint Security System and Other Security
Features to Protect Against Device Cloning and
Software Piracy
• High Fidelity Audio CODEC
• Soft Acoustic Fade between Memory Changes
• Drives Zero−Bias Two−Terminal Receivers
• E1 RoHS−compliant Hybrid
• Hybrid Typical Dimensions:
0.225 x 0.125 x 0.045 in
(5.72 x 3.18 x 1.14 mm)
• These Devices are Pb−Free and are RoHS Compliant
BLOCK DIAGRAM
VREG 1
REGULATOR
MIC1 18
A/D
MIC2 17
TIN 16
A/D
DAI 15
MGND 2
SA3229
MS2
9
MS1
10
SDA CLK
12
11
MIC / TELECOIL
COMPENSATION
PROGRAMMING
INTERFACE
FEEDBACK
CANCELLER
TONE
GENERATOR
+
PRE BIQUAD FILTERS
1−4
POST BIQUAD FILTERS
3&4
CROSS
FADER
1, 2 or 4 CHANNEL
WDRC
AGC−O
EVOKE
POST BIQUAD FILTERS
1&2
VC GAIN
WIDEBAND GAIN
TRIMMER/VC INTERFACE
13
D_VC
14
22
21
20
19
VC TR1 TR2 TR3 TR4
NOISE GENERATOR BIQUAD 1−4
Figure 1. Hybrid Block Diagram
VB
8
7 VBP
PEAK
CLIPPING
D/A
HBRIDGE
5 OUT+
6 OUT −
4 PGND
3
GND
www.onsemi.com
2