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參數資料
| 型號： | KT8557B |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 元件分類： | Codec |
| 英文描述： | 1 CHIP CODECS |
| 中文描述： | 1芯片編解碼器 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 152K |
| 代理商： | KT8557B |
KT8554B/7B 1 CHIP CODECS
INTRODUCTION
The KT8554B/7B are single-chip PCM encoders and decoders
(PCM CODECs) and PCM line filters. These devices provide
all the functions required to interface a full-duplex voice
telephone circuit with a time-division-multiplex (TDM)
system.
These devices are designed to perform the transmit encoding
and receive decoding as well as the transmit and receive filter-
ing functions in PCM system. They are intended to be used
at the analog termination of a PCM line or trunk.
These devices provide the bandpass filtering of the analog
signals prior to encoding and after decoding. These combina-
tion devices perform the encoding and decoding of voice and
call progress tones as well as the signalling and supervision
information.
FEATURES
Complete CODEC and filtering system
Meets or exceeds AT&T D3/D4 and CCITT
specifications
μ
-Law : KT8554B, A-Law : KT8557B
On-chip auto zero, sample and hold, and precision
voltage references
Low power dissipation : 60mW (operating)
3mW (standby)
±
5V operation
TTL or CMOS compatible
Automatic power down
PIN CONFIGURATION
Fig. 1
Device
KT8554BJ
KT8557BJ
KT8557BN
KT8554BN
KT8554BD
KT8557BD
Package
Operating Temperature
16-CERDIP
- 25 ~ 125
°
C
16-DIP-300A
- 25 ~ 70
°
C
16-SOP-BD300
-SG
- 25 ~ 70
°
C
VF
X
I
+
VF
X
I
-
GS
X
TS
X
FS
X
S
D
X
BCLK
X
MCLK
X
V
BB
GNDA
VF
R
O
V
CC
FS
R
D
R
BCLK
R
/CLKSEL
MCLK
R
/PDN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
KT8554B/7B
ORDERING INFORMATION
16-CERDIP
16-DIP-
300A
16-SOP-BD300
-SG
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