- 您現在的位置：買賣IC網 > PDF目錄364329 > 1N5268AFE1205 2Mbps. Single Pair HDSL ANALOG FRONT END PDF資料下載
參數資料
| 型號： | 1N5268AFE1205 |
| 英文描述： | 2Mbps. Single Pair HDSL ANALOG FRONT END |
| 中文描述： | 2Mbps的。單對HDSL模擬前端 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 196K |
| 代理商： | 1N5268AFE1205 |
1998 Burr-Brown Corporation
PDS-1461A
Printed in U.S.A. September, 1998
2Mbps, Single Pair HDSL ANALOG FRONT END
FEATURES
G
E1/T1 SINGLE PAIR 2B1Q OPERATION
G
COMPLETE ANALOG INTERFACE
G
385mW POWER DISSIPATION
G
PROGRAMMABLE POWER
AFE1205
International Airport Industrial Park Mailing Address: PO Box 11400, Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 Tel: (520) 746-1111 Twx: 910-952-1111
Internet: http://www.burr-brown.com/ FAXLine: (800) 548-6133 (US/Canada Only) Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
DESCRIPTION
Burr-Brown’s Analog Front End greatly reduces the size and
cost of a single pair HDSL (High bit rate Digital Subscriber
Line) system by providing all of the active analog circuitry
needed to connect an HDSL digital signal processor to an
external compromise hybrid and an HDSL line transformer.
The transmit and receive filter responses automatically change
with clock frequency, allowing the AFE1205 to operate over a
wide range of data rates. The power dissipation of the device
can be reduced under digital control for operation at lower
speeds. The AFE1205 will operate at bit rates from 160kbps to
2.3Mbps. It meets ETSI PSD specifications for single pair E1,
as well as ETSI and ANSI PSD specifications for two pair E1
and T1.
Functionally, this unit consists of a transmit and a receive
section. The transmit section generates, filters, and buffers
outgoing 2B1Q data. The receive section filters and digitizes
the symbol data received on the telephone line. This IC operates
Pulse
Former
PLL
OUT
PLL
IN
txDAT
txCLK
rxSYNC
rxLOOP
rxGAIN
rxD13 - rxD0
Line
Driver
Voltage
Reference
Delta-Sigma
Modulator
Transmit
Control
Receive
Control
Decimation
Filter
14
2
txLINE
N
txLINE
P
REF
P
V
CM
REF
N
rxLINE
P
rxLINE
N
rxHYB
P
rxHYB
N
Patents Pending
D/A
Converter
G
48-LEAD SSOP PACKAGE
G
SCALEABLE DATA RATE
G
OPERATION FROM 2.3Mbps TO 160kbps
G
+5V ONLY (5V OR 3.3V DIGITAL)
G
–40
°
C TO +85
°
C OPERATION
on a single 5V supply. The digital circuitry in the unit can be
connected to a supply from 3.3V to 5V. The chip uses only
385mW for full-speed operation. It is housed in a small 48-lead
SSOP package.
The receive channel is designed around a fourth-order delta-
sigma analog-to-digital converter. It includes a difference am-
plifier designed to be used with an external compromise hybrid
for first-order analog echo cancellation. A programmable gain
amplifier with gains 0dB to +9dB is also included. The delta-
sigma modulator, operating at a 24X oversampling ratio, pro-
duces a 14-bit output at symbol rates up to 1168kHz (for
2.3Mbps operation).
The transmit channel consists of a digital-to-analog converter and
switched-capacitor pulse forming network followed by a differ-
ential line driver. The pulse forming network receives symbol
data and generates a standard 2B1Q output waveform. The
differential line driver uses a composite output stage combining
class B operation (for high efficiency driving large signals) with
class AB operation (to minimize crossover distortion).
AFE1205
相關PDF資料 |
PDF描述 |
|---|---|
| 1N5273A | 1/2 Watt ZENER DIODES |
| 1N5274A | 1/2 Watt ZENER DIODES |
| 1N5275A | 1/2 Watt ZENER DIODES |
| 1N5276A | 1/2 Watt ZENER DIODES |
| 1N5277A | 1/2 Watt ZENER DIODES |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 1N5268B | 功能描述:穩壓二極管 RoHS:否 制造商:Vishay Semiconductors 齊納電壓:12 V 電壓容差:5 % 電壓溫度系數:0.075 % / K 齊納電流: 功率耗散:3 W 最大反向漏泄電流:3 uA 最大齊納阻抗:7 Ohms 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AC 封裝:Reel |
| 1N5268B (DO-35) | 制造商:Aeroflex 功能描述:COMMERCIAL ZENER VOLTAGE REGUL 制造商:Aeroflex / Metelics 功能描述:COMMERCIAL ZENER VOLTAGE REGULATOR DIODE - Bulk 制造商:Microsemi Corporation 功能描述:1N5268B (DO-35) - Bulk |
| 1N5268B AP | 功能描述:DIODE ZENER 82V 500MW DO35 制造商:central semiconductor corp 系列:- 包裝:剪切帶（CT） 零件狀態:有效 電壓 - 齊納（標稱值）（Vz）:82V 容差:±5% 功率 - 最大值:500mW 阻抗（最大值）（Zzt）:330 歐姆 不同?Vr 時的電流 - 反向漏電流:100nA @ 62V 不同 If 時的電壓 - 正向（Vf）:1.1V @ 200mA 工作溫度:-65°C ~ 200°C 安裝類型:通孔 封裝/外殼:DO-204AH，DO-35，軸向 供應商器件封裝:DO-35 標準包裝:1 |
| 1N5268B BK | 功能描述:DIODE ZENER 82V 500MW DO35 制造商:central semiconductor corp 系列:- 包裝:散裝 零件狀態:有效 電壓 - 齊納（標稱值）（Vz）:82V 容差:±5% 功率 - 最大值:500mW 阻抗（最大值）（Zzt）:330 歐姆 不同?Vr 時的電流 - 反向漏電流:100nA @ 62V 不同 If 時的電壓 - 正向（Vf）:1.1V @ 200mA 工作溫度:-65°C ~ 200°C 安裝類型:通孔 封裝/外殼:DO-204AH，DO-35，軸向 供應商器件封裝:DO-35 標準包裝:2,500 |
| 1N5268B TR | 功能描述:DIODE ZENER 82V 500MW DO35 制造商:central semiconductor corp 系列:- 包裝:剪切帶（CT） 零件狀態:有效 電壓 - 齊納（標稱值）（Vz）:82V 容差:±5% 功率 - 最大值:500mW 阻抗（最大值）（Zzt）:330 歐姆 不同?Vr 時的電流 - 反向漏電流:100nA @ 62V 不同 If 時的電壓 - 正向（Vf）:1.1V @ 200mA 工作溫度:-65°C ~ 200°C 安裝類型:通孔 封裝/外殼:DO-204AH，DO-35，軸向 供應商器件封裝:DO-35 標準包裝:1 |
發布緊急采購，3分鐘左右您將得到回復。