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參數(shù)資料
| 型號(hào)： | AS2521 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 英文描述： | Telephone Speech Circuit with Loudhearing and Handsfree |
| 中文描述： | 電話語音電路Loudhearing和免提 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 96K |
| 代理商： | AS2521 |
Preliminary
AS2520/21/20B/21B
Rev. 5.1
Page 11
May 1999
Receive
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
A
RX
Gain (LS to RO), Default
LSP Gain (LSI to LO)
Volume reset
1.5
17.5
3
19
4.5
20.5
dB
dB
A
TX/F
Variation with Frequency
f = 500 Hz to 3.4 kHz
+/- 0.8
dB
A
LLC
Gain Range, LLC
Speech mode; LLC = V
SS
or V
DD
-6
dB
A
RX
Volume Range
10 steps, each 2 dB
20
dB
THD
Distortion
V
RI
< 0.2 V
RMS
2
%
V
SC
A
SCO
Soft Clip Level (RO)
Soft Clip Level (LO)
Soft Clip Overdrive
V
RO
=
Not AS2520B/21B; V
LO
=
Unloaded
1
1.3
30
V
PEAK
V
PEAK
dB
V
RTH
A
AD
t
DECAY
t
DECAY
Threshold Voltage at RTH
Attenuation Depth
Attack Time
Decay Time
Channel control; V
RI
> 0.8 V
RMS
Channel control
7
15
30
25
mV
dB
μs/6dB
μs/6dB
V
NO
V
UFC
Noise Output Voltage (RO)
Unwanted Frequency
Components (RO)
HS = high; T
AMB
= 25°C
50 Hz.........20 kHz
-72
-60
dBmp
dBmp
Z
IN
Input Impedance, RI
8
kohm
V
IN RI
Input Voltage Range, RI
+/- 2
V
PEAK
A
ST
Sidetone Cancellation
V
RI
< 0.2 V
RMS
; T
AMB
= 25°C
26
dB
Z
IN
Input Impedance, STB
80
kohm
V
IN ST
Input Voltage Range, STB
+/- 2
V
PEAK
General Timings
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
t
VOL
Volume Key Debounce
7
ms
t
SCA
Soft Clip Attack Time
V
IN
above soft clip level
0.12
ms/6dB
t
SCD
Soft Clip Decay Time
V
IN
below soft clip level
128
ms/6dB
t
PDA
Peak Detector Attack Time V
IN
above V
TH
3.2
ms/V
t
PDD
Peak Detector Decay Time V
IN
below V
TH
29
ms/V
t
LPA
Low-Power Attack Time
V
PP
< 3.6V
250
ms/6dB
t
LPD
Low-Power Release
V
PP
> 3.6V
1
sec/6dB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS2520P | Telephone Speech Circuit with Loudhearing and Handsfree |
| AS2520 | Telephone Speech Circuit with Loudhearing and Handsfree |
| AS2520B | Telephone Speech Circuit with Loudhearing and Handsfree |
| AS2520T | Telephone Speech Circuit with Loudhearing and Handsfree |
| AS2521B | Telephone Speech Circuit with Loudhearing and Handsfree |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2521B | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Telephone Speech Circuit with Loudhearing and Handsfree |
| AS2521BP | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Telephone Speech Circuit with Loudhearing and Handsfree |
| AS2521BT | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Telephone Speech Circuit with Loudhearing and Handsfree |
| AS2521P | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Telephone Speech Circuit with Loudhearing and Handsfree |
| AS2521T | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Telephone Speech Circuit with Loudhearing and Handsfree |
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