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參數(shù)資料
| 型號： | AFE1203 |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:15; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:15-15 RoHS Compliant: No |
| 中文描述： | 2Mbps的，單對HDSL模擬前端 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 193K |
| 代理商： | AFE1203 |
1998 Burr-Brown Corporation
PDS-1460A
Printed in U.S.A. October, 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
AFE1203
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 AFE1203 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 AFE1203 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
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).
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
AFE1203
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AFE1203E | LJT 18C 18#20 PIN PLUG |
| AFE1205 | LJT 18C 18#20 PIN PLUG |
| AFE1205E | Circular Connector; No. of Contacts:18; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:15-18 RoHS Compliant: No |
| AFE1224 | 2Mbps, Single Pair ANALOG FRONT END |
| AFE1224E | Circular Connector; No. of Contacts:18; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:15-18 RoHS Compliant: No |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AFE1203E | 制造商:Texas Instruments 功能描述: |
| AFE1203E/1K | 功能描述:電信線路管理 IC 2Mbps Sngl Pair HDSL Anlg Front End 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 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AFE1203E/1KG4 | 功能描述:電信線路管理 IC 2Mbps Sngl Pair HDSL Anlg Front End 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 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| AFE1205 | 制造商:BB 制造商全稱:BB 功能描述:2Mbps, Single Pair HDSL ANALOG FRONT END |
| AFE1205E | 功能描述:電信線路管理 IC 2Mbps Sngl Pair HDSL Anlg Front End 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 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
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