technique.
鈥?/div>
14-Bit Sigma-Delta A/D converter
鈥?2 Channel Analog MUX
鈥?Sigma-Delta ADC.
* 128X Oversampling
* 2-th-Order Sigma-Delta modulator
* On-chip Decimation Filter
* 80dB Signal to Noise Ratio.
鈥?Single-ended Analog Input
鈥?Serial and Parallel Digital Output
鈥?Sampling Rate of 28KHz
鈥?Single +5V Power Supply
X128FS, BW0404X is suitable for speech and
telephony
systems.
applications.,
multimedia
TYPICAL APPLICATIONS
鈥?Speech Processing
(Recognition, Synthesis, Compression etc.)
鈥?Telephony
鈥?Modem
FUNCTIONAL BLOCK DIAGRAM
INP
INN
OUT
INSE
PDOUT
AMP
Sigma-Delta A/D CONVERTER
MUX
Sigma-Delta
Modulator
SERIAL
Decimation
Filter
14
I/F
SDOUT
BCK
FS
AMP
OPS
CLOCK GENERATOR
REFERENCE
BIST
VREF
PWDN
RSEL
RST
MCLK
Ver 1.2
(April 2002)
No responsibility is assumed by SEC for its use nor for any infringements of patents or other rights of third
parties that may result from its use. The content of this datasheet is subject to change without any notice.
SEC ASIC
1/8
ANALOG