參數(shù)資料
型號(hào): MT8966AS
廠商: Mitel Networks Corporation
元件分類: Codec
英文描述: Integrated PCM Filter Codec
中文描述: 集成的PCM編解碼器
文件頁數(shù): 17/32頁
文件大小: 607K
代理商: MT8966AS
MT8960/61/62/63/64/65/66/67
Data Sheet
17
Zarlink Semiconductor Inc.
AC Electrical Characteristics - Transmit (A/D) Path
- Voltages are with respect to GNDD unless otherwise stated.
T
A
=0 to 70
°
C, V
DD
=5V
±
5%, V
EE
=-5V
±
5%, V
Ref
=2.5V
±
0.5%, GNDA=GNDD=0V, Clock Frequency = 2.048MHz,
Filter Gain Setting = 0dB. Outputs unloaded unless otherwise specified.
Characteristics
Sym.
Min.
Typ.
*
Max.
Units
Test Conditions
1
A
N
A
L
O
G
Analog Input at V
X
equivalent to
the overload decision level at the
codec
V
IN
4.82
9
5.00
0
V
PP
V
PP
Level at codec:
μ
-
Law: 3.17 dBm0
A-Law: 3.14 dBm0
See Note 6
2
Absolute Gain (0dB setting)
G
AX
-0.25
+0.25
dB
0 dBm0 @ 1004 Hz
3
Absolute Gain (+1dB to +7dB
settings)
-0.35
+0.35
dB
from nominal,
@ 1004 Hz
4
Gain Variation
With Temp
G
AXT
0.01
dB
T
A
=0
°
C to 70
°
C
With Supplies
G
AXS
0.04
dB/V
5
Gain Tracking
(See Figure 12)
CCITT G712
(Method 1)
GT
X1
-0.25
-0.25
-0.50
+0.25
+0.25
+0.50
dB
dB
dB
Sinusoidal Level:
+3 to -20 dBm0
Noise Signal Level:
-10 to -55 dBm0
-55 to -60 dBm0
CCITT G712
(Method 2)
AT&T
GT
X2
-0.25
-0.50
-1.50
+0.25
+0.50
+1.50
dB
dB
dB
Sinusoidal Level:
+3 to -40 dBm0
-40 to -50 dBm0
-50 to -55 dBm0
6
Quantization
Distortion
(See Figure 13)
CCITT G712
(Method 1)
D
QX1
28.00
35.60
33.90
29.30
14.20
dB
dB
dB
dB
dB
Noise Signal Level:
-3 dBm0
-6 to -27 dBm0
-34 dBm0
-40 dBm0
-55 dBm0
CCITT G712
(Method 2)
AT&T
D
QX2
35.30
29.30
24.30
dB
dB
dB
Sinusoidal Input Level:
0 to -30 dBm0
-40 dBm0
-45 dBm0
7
Idle Channel
C-message
N
CX
18
dBrnC0
μ
-
Law Only
Noise
Psophometric
N
PX
-67
dBm0p
CCITT G712
8
Single Frequency Noise
N
SFX
-56
dBm0
CCITT G712
9
Harmonic Distortion
(2nd or 3rd Harmonic)
-46
dB
Input Signal:
0 dBm0 @ 1.02 kHz
10
Envelope Delay
D
AX
270
μ
s
@ 1004 Hz
11
Envelope Delay
Variation With
Frequency
1000-2600 Hz
600-3000 Hz
400-3200 Hz
D
DX
60
150
250
μ
s
μ
s
μ
s
Input Signal:
400-3200 Hz
Sinewave
at 0 dBm0
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