參數(shù)資料
型號(hào)： T8536B
元件分類： Codec
英文描述： T8535B/T8536B Quad Programmable Codec
中文描述： T8535B/T8536B四可編程編解碼器
文件頁數(shù)： 30/50頁
文件大小： 929K
代理商： T8536B
30
Agere Systems Inc.
Preliminary Data Sheet
September 2001
T8535B/T8536B Quad Programmable Codec
Electrical Characteristics
(continued)
Gain and Dynamic Range
(continued)
Table 13. Gain and Dynamic Range
(continued)
* Applied to all four channels.
RTZ
and CTZ paths open.
Parameter
Symbol
GXAL
Test Conditions
Sinusoidal test method*,
reference level = 0 dBm0
:
VF
X
I =
40 dBm0 to +3 dBm0
VF
X
I =
50 dBm0 to
40 dBm0
VF
X
I =
55 dBm0 to
50 dBm0.
Receive gain programmed to
6 dB,
apply 0 dBm0 signal to IPCM, mea-
sure
V
RCV
,
R
L
= 100 k
differential:
20 °C to 70 °C
0 °C to 85 °C
40
°C
to +85
°C.
Digital input 0 dBm0 signal,
f = 300 Hz to 3400 Hz.
Digital input 0 dBm0 signal,
f = 300 Hz to 3400 Hz.
Measure receive gain over the range
from maximum to minimum setting,
calculated deviation from the pro-
grammed gain relative to GRA at
0 dB,
V
DD
= 5 V.
Relative to 1004 Hz, digital input =
0 dBm0 code, minimum gain < GR <
maximum gain, 0 dB path gain:
f = below 3000 Hz
f = 3140 Hz
f = 3380 Hz
f = 3860 Hz
f = 4600 Hz and above.
Sinusoidal test method*,
reference level = 0 dBm0:
IPCM digital level =
40 dBm0 to +3 dBm0
IPCM digital level =
50 dBm0 to
40 dBm0
IPCM digital level =
55 dBm0 to
50 dBm0.
Min
Typ
Max
Unit
Transmit Gain Variation
with Signal Level
0.25
0.50
1.40
—
—
—
0.25
0.50
1.40
dB
dB
dB
Receive Gain Absolute
Accuracy
GRA
—
0.25
0.30
±0.15
—
—
—
0.25
0.30
dB
dB
dB
Relative Gain,
VF
R
OP
to
VF
R
ON
Relative Phase,
VF
R
OP
to
VF
R
ON
Receive Gain Variation
with Programmed Gain
—
0.01
—
0.01
dB
—
0.25
—
0.25
Degrees
GRAG
0.1
—
0.1
dB
Receive Gain Variation
with Frequency,
600
Resistive Termination
GRAF
0.125
0.57
0.735
—
—
±0.04
±0.04
0.550
10.7
—
0.125
0.125
0.015
8.98
28
dB
dB
dB
dB
dB
Receive Gain Variation
with Signal Level
GRAL
0.25
0.50
1.40
—
—
—
0.25
0.50
1.40
dB
dB
dB
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