參數(shù)資料
型號(hào): MTC20154
廠商: 意法半導(dǎo)體
英文描述: INTEGRATED ADSL CMOS ANALOG FRONT-END CIRCUIT
中文描述: 集成ADSL CMOS模擬前端電路
文件頁(yè)數(shù): 1/21頁(yè)
文件大?。?/td> 533K
代理商: MTC20154
1/21
MTC20154
February 2004
Features
Fully integrated AFE for ADSL
Overall 12 bit resolution, 1.1MHz signal
bandwidth
8.8 MS/s ADC
8.8 MS/s DAC
THD: -60 dB @ full scale
1V full scale input
Differential analog I/O
Accurate continuous-time channel filtering
3
rd
& 4
th
order tunable continuous time LP
Filters
64 pin TQFP package
350mW power consumption
Applications
ADSL Front-end for all full rate and Lite
standards
DESCRIPTION
The MTC20154 is the fifth generation Analog
Front End (AFE) designed for DMT based ADSL
(Asynchronous Digital Subscriber Line) modems
compliant with ANSI T1.413 category 2 standard.
It includes one 12 bit DAC and one 13 bit ADC.It is
intended to be used with the MTC20156/
MTC20147 DMT/ATM processors as part of the
MTK20150/MTK20141 chipsets, but may also be
used to support other xDSL signal processors.
The MTC20154 provides programmable low pass
filters for each of the two channels and automatic
gain control. A configuration pin allows the filters to
be switched from ATU-R mode to ATU-C mode.
The pipeline ADC architecture provides 13 bit dy-
namic range and a signal bandwith of 1.1 MHz.
The device consumes only 0.35 Watt in full opera-
tion and has a power down mode for standby. It is
housed in a compact 64 pin thin plastic quad flat
package.
TQFP64
(10 x 10 1.4mm)
ORDERING NUMBER:
MTC10154TQ-C (Temp.: 0 to 70°C)
INTEGRATED ADSL CMOS ANALOG FRONT-END CIRCUIT
Figure 1. Block Diagram
Tuning
circuit
I/V - Ref
Xtal-driver
VCXO DAC
ICCQ
Calibration
CTRL/TST
ifce
G= -9..6dB
1dB step
TXP
TXN
RXP
RXN
AACrx AGCrx
AGCtx
A = -15..0dB, 5dB step
G = -0..31dB, 1dB step
12bits
13bits
4bits
4bits
MUX
MUX
E
C
D
1.1MHz
HC/DS
138KHz
SC/US
ADC
DAC
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MTC20154-TQ-I1A 制造商:STMicroelectronics 功能描述:ADSL DMT/ATM IND T - Tape and Reel