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73M1903-IM

更新时间： 2024-11-14 14:46:59
品牌 Logo 应用领域
东电化 - TDK /
页数 文件大小 规格书
46页 1248K
描述
Modem, PQCC32

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73M1903-IM 数据手册

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73M1903  
Modem Analog Front End  
PRODUCT DATA SHEET  
JANUARY 2004  
DESCRIPTION  
FEATURES  
The TDK 73M1903 Analog Front End (AFE) IC  
includes fully differential hybrid driver outputs,  
which connect to the telephone line interface  
through a transformer-based DAA. The receive  
pins are also fully differential for maximum  
flexibility and performance. This arrangement  
allows for the design of a high performance  
hybrid circuit to improve signal to noise  
performance under low receive level conditions,  
and compatibility with any standard transformer  
intended for PSTN communications applications.  
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Up to 56Kbps (V.92) performance  
Programmable sample rates (7.2 - 14.4kHz)  
Reference clock range of 9-40MHz  
Crystal frequency range of 9-27MHZ  
Host synchronous serial interface operation  
Pin compatible with 73M2901CL modem  
Low power modes  
On board line interface drivers  
Fully differential receiver and transmitter  
Drivers for transformer interface  
3.0V – 3.6V operation  
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5V tolerant I/O  
The device incorporates  
a
programmable  
Industrial temperature range (-40 to +85°C)  
JATE compliant transmit spectrum  
Package options: 32-TQFP and 32-MLF  
sample rate circuit to support soft modem and  
DSP based implementations of all speeds up to  
V.92 (56Kbps). The sampling rates supported  
are from 7.2kHz to 14.4kHz by programming  
pre-scaler NCO and PLL NCO.  
APPLICATIONS  
The TDK 73M1903 device incorporates a digital  
host interface that is compatible with the serial  
ports found on most commercially available  
DSPs and processors and exchanges both  
payload and control information with the host.  
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Set Top Boxes  
Personal Video Recorders (PVR)  
Multifunction Peripherals (MFP)  
Fax Machines  
Internet Appliances  
Game Consoles  
Point of Sale Terminals  
Automatic Teller Machines  
Speaker Phones  
Cost saving features of the device include an  
input reference frequency circuit, which accepts  
a range of crystals from 9-27MHz. It also  
accepts external reference clock values between  
9-40MHz generated by the host processor. In  
most applications, this eliminates the need for a  
dedicated crystal oscillator and reduces the bill  
of material (BOM).  
RF Modems  
VBG  
(HYBRID)  
Transmit  
Drivers/  
Filters  
Analog  
Sigma  
Delta  
The 73M1903 also supports two analog loop  
back and one digital loop back test modes.  
TXAP  
TXAN  
Ref.  
SCLK  
SDIN  
The 73M1903 in 32-TQFP package is footprint  
compatible with 73M2901CL embedded modem  
and allows for the same circuit design to  
accommodate soft modem, V.22bis hard  
modem, and high speed (V.32bis/V.34/V.92)  
applications through population of an external  
data pump device.  
Receive  
Mux/  
Filters  
RXAP  
RXAN  
Control  
Registers  
Serial  
Port  
SDOUT  
DAC  
FSB  
GPIO  
DAA  
Controls  
Control  
Logic  
Clocks  
Crystal  
HOOK  
http://www.tdksemiconductor.com  
TDK SEMICONDUCTOR CONFIDENTIAL  
1/08/04 R4.031  
1234567...46

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73M1903-IMR/F TERIDIAN

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73M1903-IVT/F TERIDIAN

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73M1922-IM/F MAXIM

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 		Consumer Circuit, 5 X 5 MM, ROHS COMPLIANT, QFN-32
73M1922-IMR/F TERIDIAN

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 		Consumer Circuit, 5 X 5 MM, ROHS COMPLIANT, QFN-32
73M1922-IMR/F MAXIM

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 		Consumer Circuit, 5 X 5 MM, ROHS COMPLIANT, QFN-32
73M1922-IVT/F TERIDIAN

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 		Consumer Circuit, PDSO20, ROHS COMPLIANT, MO-153AC, TSSOP-20
73M1922-IVT/F MAXIM

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 		Consumer Circuit, PDSO20, ROHS COMPLIANT, MO-153AC, TSSOP-20

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