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參數(shù)資料
| 型號(hào)： | AS2525 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Single-Chip Handsfree Phone CMOS Integrated Circuit |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, PQFP44 |
| 封裝： | TQFP-44 |
| 文件頁數(shù)： | 10/26頁 |
| 文件大?。?/td> | 264K |
| 代理商： | AS2525 |
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Preliminary
AS2525
Rev. 1.3
Page 10
May 1999
Table 10: Handsfree Tx gain setting
[PG] + [0] + (Password) + [0] + [3] + (x) + [PG]
Key
(x)
Tx Gain (dB)
M3/4 to LS
Key
(x)
Tx Gain (dB)
M3/4 to LS
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
39
40
41
42
43
44
45
46
[8]
[9]
[M1]
[M2]
[M3]
[M4]
[M5]
[M6]
47
48
49
50
51
52
53
54
The input is differential with an impedance of 10 k
.
The soft clip circuit limits the output voltage swing at
pin LS to 2 V
PEAK
when activated.
Table 11: Handsfree Tx soft clipping selection
[PG] + [0] + (Password) + [9] + [2] + (digit) + [PG]
Digit
Handfree Tx Soft Clipping
[0]
Disabled
[1]
Enabled
(2 V
PEAK
)
There is no LLC option for this path.
Receive Path
The gain of the LS —> RO receive path is default set
to 1 dB. This gain can be changed from -6 dB to 9 dB
in 1 dB steps by set-up programming.
Table 12: Handset Rx gain setting
[PG] + [0] + (Password) + [0] + [2] + (x) + [PG]
Key
(x)
Rx Gain (dB)
LS to RO
Key
(x)
Rx Gain (dB)
LS to RO
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
-6
-5
-4
-3
-2
-1
0
1
[8]
[9]
[M1]
[M2]
[M3]
[M4]
[M5]
[M6]
2
3
4
5
6
7
8
9
The user can also change the gain within this range in
4 dB steps via the [V+]/[V-] keys. The receive default
gain in handset and headset mode must lie between
position 5 and 9 for correct operation of the volume
control. The receive input is the differential signal of
RI and STB. The soft clip circuit limits the output
voltage at RO to 1 V
PEAK
. It prevents harsh distortion
and acoustic shock.
Table 13: Handset Rx soft clipping selection
[PG] + [0] + (Password) + [#] + [5] + (digit) + [PG]
Digit
Handset Rx Soft Clipping (Earpiece)
[0]
Disabled
[1]
Enabled
There is LLC option for this path.
The gain of the LS —> LO1/LO2 receive path is set to
29 dB.
This gain can be changed by set-up programming
from 22 dB to -37 dB in 1 dB steps.
Table 14: Loudspeaker gain setting
[PG] + [0] + (Password) + [0] + [4] + (x) + [PG]
Key
(x)
Rx Gain (dB)
LS to LO1/2
Key
(x)
Rx Gain (dB)
LS to LO1/2
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
22
23
24
25
26
27
28
29
[8]
[9]
[M1]
[M2]
[M3]
[M4]
[M5]
[M6]
30
31
32
33
34
35
36
37
The user can also change the gain using the [V+]/[V-]
keys (see section "Handsfree"). The volume range is
15 dB (-7/+8 dB).
The receive input is the differential signal of RI and
STB. The soft clip circuit limits the output voltage
swing at LO1/LO2 to 1 V
PEAK
.
Table 15: Loudspeaker soft clipping selection
[PG] + [0] + (Password) + [9] + [3] + (digit) + [PG]
Digit
Handfree Rx Soft Clipping (Loudspeaker)
[0]
Disabled
[1]
Enabled
There is optional LLC for this path.
Line Loss Compensation (LLC)
The line loss compensation is set-up programmable
and effects only the handset mode.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS2534ET | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535 | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535P | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2535T | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
| AS2536 | Multi-Standard CMOS Single Chip Telephone IC with Dual Soft Clipping |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS2525 DB | 功能描述:AS2525 - Telecom Evaluation Board 制造商:ams 系列:- 零件狀態(tài):停產(chǎn) 主要用途:電信 嵌入式:- 使用的 IC/零件:AS2525 主要屬性:- 輔助屬性:- 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
| AS2525_1 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Single-Chip Handsfree Phone CMOS Integrated Circuit |
| AS2525B | 功能描述:電信線路管理 IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AS2525B-T | 功能描述:IC HANDSFREE TELEPH CMOS 44-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| AS2525-DB | 制造商:AMS 功能描述:BOARD DEMO FOR AS2525 制造商:ams 功能描述:AS2525 Demo Board |
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