參數(shù)資料
型號(hào)： KT8554B
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
元件分類： Codec
英文描述： 1 Chip Codecs(編解碼器)
中文描述： 1芯片解碼器（編解碼器）
文件頁(yè)數(shù)： 7/12頁(yè)
文件大小： 136K
代理商： KT8554B
KT8554B/7B 1 CHIP CODECS
TRANSMISSION CHARACTERISTICS
(Unless otherwise specified : Ta = 0
o
C to 70
o
C, V
= 5V
±
5%, V
= -5V
±
5%, GNDA = 0V, f = 1.02KHz,
V
IN
= 0dBm0, transmit input amplifier connected for unity-gain non-inverting.)
Characteristic
Symbol
Test Conditions
Min
Typ
Max
Unit
Amplitude Respons
Receive Gain, Absolute
G
V (ARX)
Ta = 25
o
C, V
= 5V, V
= -5V
Input = Digital code sequence for
0dBm0 signal at 1020Hz
f = 0Hz to 3000Hz
f = 3300Hz
f = 3400Hz
f = 4000Hz
-0.15
0.15
dB
Receive Gain, Relative to G
V (ARX)
G
V (RRX)
-0.15
-0.35
-0.7
0.15
0.05
0
-14
dB
dB
dB
dB
Absolute Receive Gain Variation
with Temperature
Absolute Receive Gain Variation
with Supply Voltage
G
V (ARX)
/
G
V (ARX)
/
Ta = 0
o
C to 70
o
C
±
0.1
dB
V
CC
= 5V
±
5%, V
BB
= -5V
±
5%
±
0.05
dB
Receive Gain Variations with
Level
G
V (RXL)
Sinusoidal test method ; reference
input PCM code corresponds to an
Ideally encoded -10dBm0 signal
PCM level = -40dBm0 to +3dBm0
PCM level = -50dBm0 to -40dBm0
PCM level = -55dBm0 to -50dBm0
R
L
= 600
Nominal 0dBm0 level is 4dBm (600
)
0dBm0
Max overload level (3.17dBm0):
KT8554B
Max overload level (3.14dBm0):
KT8557B
Ta = 25
o
C, V
= 5V, V
= -5V
Input at GS
X
= 0dBm0 at 1020Hz
f = 16Hz
f = 50Hz
f = 60Hz
f = 200Hz
f = 300Hz - 3000Hz
f = 3300Hz
f = 3400Hz
f = 4000Hz
f = 4600Hz and up, measure
response from 0Hz to 4000Hz
Ta = 0
o
C to 70
o
C
-0.2
-0.4
-1.2
-2.5
0.2
0.4
1.2
2.5
dB
dB
dB
V
Receive Output Drive Level
Absolute Levels
V
O (RX)
V
AL
1.2276
V
rms
2.501
V
PK
-0.15
0.15
dB
Transmit Gain, Relative to G
V (ATX)
G
V (RTX)
-1.8
-0.15
-0.35
-0.7
-40
-30
-26
-0.1
0.15
0.05
0
-14
-32
dB
dB
dB
dB
dB
dB
dB
dB
dB
Absolute Transmit Gain Variation
with Temperature
Absolute Transmit Gain Variation
with Supply Voltage
G
V(ATX)
/
G
V (ATX)
/
±
0.1
dB
V
CC
= 5V
±
5%, V
BB
= -5V
±
5%
±
0.05
dB
Sinusoldal test method
Reference level = - 10dBm0
VF
X
I + = - 40dBm0 to + 3dBm0
VF
X
I + = - 50dBm0 to - 40dBm0
VF
X
I + = - 55dBm0 to - 50dBm0
- 0.2
- 0.4
- 1.2
0.2
0.4
1.2
dB
dB
dB
Transmit Gain, Absolute
G
V (ATX)
Max Overload Level
V
OL (MAX)
G
V (TXL)
Transmit Gain Variations with
Level
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