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KA8601C Datasheet

  • KA8601C

  • SPEAKER PHONE WITH SPEECH NETWORK

  • 10頁

  • SAMSUNG   SAMSUNG

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KA8601C
INTRODUCTION
SPEAKER PHONE WITH SPEECH NETWORK
The KA8601C is a monolithic integrated circuit for use in high perfor-
mance speaker phone system.
The KA860lC consists of speaker phone and speech network. Speaker
phone includes attenuators, amplifiers, level detectors, attenuator
control, hybrid amplifiers, regulator and AGC circuit. Speech network
includes transmit amp, receive amp, voltage regulator for dialer, side
tone control, and line equalizer.
48-SDIP-600
FEATURES
鈥?/div>
Speaker Phone
- Low Operating Voltage (3.0 ~ 6.5V)
- High Attenuator Gain Range (52dB)
- Improved Sensitivity (Four-point Signal Sensing)
- Chip Disable for Active or Standby Operation
- Microphone Amp Gain set by External Components
鈥?/div>
Speech Network
- Low Operating Voltage (1.5V : speech)
- Regulated Voltage for Dialer (Typically 3.3V)
- Transmit, Receive, Side Tone Gains set by
External Components
- Mute Input for DTMF Dialing
ORDERING INFORMATION
Device
KA8601C
Package
48-SDIP-600
Operating Temperature
- 25擄C ~ + 75擄C
BLOCK DIAGRAM
DETO
RX1
DETO
RX2
DETO
TX1
DETO
TX2
DETI
RX1
DETI
RX2
DETI
TX1
DETI
TX2
RXO
ATT
DTO-
TXO
ATT
26
RXI
ATT
TXI
ATT
PD
RX
PD
TX
MICO
GND
MICI
47 DTI
36
46
45
44
43
42
41
40
39
38
37
35
34
33
32
31
30
29
28
27
48
25
V
CC
24
POWER
BNM : Back Noise Monitor
3.3Vreg
level
detector
mic
amp
level
detector
RX
Attenuator
SPEAKER PHONE PART
hybrid
amp 1
ATTENUATOR
CONTROLLER
hybrid
amp 2
sidetone
amp
TX
amp2
BNM
FILTER
SPEECH NET-
8 WORK PART
DC level
shift
1.7Vreg
AGC
mic
amp
15 TX
amp1
REC
amp
RXO
SUM
21
10
11
14
16
17
18
19
20
22
RX
amp
TX
Attenuator
BNM
AGC
12
13
RXO+
DTO+
MICI+
MICO
RXO-
MICI-
GND
AGC
TXI
RXI
MS
CD
MT
NC
NC
FO
VR
LC
VI
FI
ZB
VL
23
1
2
3
4
5
6
7
9
V
DD
MT
VC
VB
CT

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