73M1903C-IMR-F datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > semiconductor> Analog mixed-signal IC> 73M1903C-IMR-F

73M1903C-IMR-F: DescriptionAnalog Front End - AFE Modem Analog Front End; Categorysemiconductor Analog mixed-signal IC; File Size453KB，48 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

Download Datasheet Parametric Compare View All

73M1903C-IMR-F Online Shopping

Suppliers	Part Number	Price	MOQ	In stock
	73M1903C-IMR-F	-	-	View	Buy Now

73M1903C-IMR-F Overview

Analog Front End - AFE Modem Analog Front End

73M1903C-IMR-F Parametric

Parameter Name	Attribute value
Product Category	Analog Front End - AFE
Manufacturer	Maxim
RoHS	Details
Type	Modem AFE
Packaging	Cut Tape
Packaging	MouseReel
Packaging	Reel
Product	Analog Front Ends
Factory Pack Quantity	2500

Preview

Download Datasheet

View All

73M1903C

Modem Analog Front End

Simplifying System Integration

DS_1903C_033

DESCRIPTION

The 73M1903C 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.

The device incorporates a programmable sample rate

circuit to support soft modem and DSP based

implementations of all speeds up to V.92 (56 kbps).

The sampling rates supported are from 7.2 kHz to

16.0 kHz by programming the pre-scaler NCO and the

PLL NCO.

The 73M1903C 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. This interface can be configured as a

single master/slave mode or as a daisy chain mode

that allows the user to connect up to eight 73M1903C

devices to a single host for multi Analog Front End

applications, such as, central server modems.

Costs saving features of the device include an input

reference frequency circuit, which accepts a range of

crystals from 4.9-27 MHz. It also accepts external

reference clock values between 1 MHz and 40 MHz

generated by the host processor. In most

applications, this eliminates the need for a dedicated

crystal oscillator and reduces the bill of materials

(BOM).

The 73M1903C also supports two analog loop back

and one digital loop back test modes.

FEATURES

•

Two pairs of software selectable transmit

differential outputs for worldwide impedance

driver implementations.

Up to 56 kbps (V.92) performance

Programmable sample rates (7.2-16.0 kHz)

Reference clock range of 1-40 MHz

Crystal frequency range of 4.9-27 MHz

Master or slave mode operation

Daisy chain configurable synchronous serial

Host interface

Low power modes

Fully differential receiver and transmitter

Drivers for transformer interface

3.0 V – 3.6 V operation

5 V tolerant I/O

Industrial temperature range (-40 to +85

°C)

JATE compliant transmit spectrum

Package option: 32-pin QFN

DATA SHEET

March 2010

•

APPLICATIONS

•

Central site server modems

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

Digital Answering Machines

RF Modems

VBG

(HYBRID)

TXAP1

TXAN1

TXAP2

TXAN2

RXAP

RXAN

Transmit

Drivers/

Filters

Analog

Sigma

Delta

Ref.

SCLK

Control

Registers

SDIN

Serial

Port

SDOUT

Control

Logic

FSD

Receiver

MUX/

Filters

DAC

GPIO

HOOK

DAA

controls

Clock

Crystal

Rev. 5.0

73M1903C Data Sheet

DS_1903C_033

Table of Contents

Pin Description

................................................................................................................................ 4

Modem Analog Front End (MAFE) Serial Interface

........................................................................ 6

2.1 Serial Data and Control.............................................................................................................. 7

2.2 Slave Mode and DAISY CHAIN ............................................................................................... 10

2.3 Control Register Map ............................................................................................................... 12

3 System Control Registers

............................................................................................................. 13

4 GPIO Registers

.............................................................................................................................. 15

5 PLL Configuration Registers

........................................................................................................ 16

6 Clock Generation...........................................................................................................................

6.1 Crystal Oscillator and Prescaler NCO ...................................................................................... 19

6.2 Analog I/O ............................................................................................................................... 22

6.3 Modem Transmitter.................................................................................................................. 23

6.4 Transmit Levels ....................................................................................................................... 24

6.5 Transmit Power – dBm ............................................................................................................ 25

6.6 Modem Receiver ..................................................................................................................... 26

7 Test Modes

.................................................................................................................................... 29

7.1 Power Saving Modes ............................................................................................................... 29

8 Electrical Specifications

............................................................................................................... 30

8.1 Absolute Maximum Ratings ..................................................................................................... 30

8.2 Recommended Operating Conditions....................................................................................... 30

8.3 Digital Specifications ................................................................................................................ 31

8.3.1 DC Characteristics ........................................................................................................ 31

8.4 AC Timing ............................................................................................................................... 32

9 Analog Specifications

................................................................................................................... 33

9.1 DC Specifications .................................................................................................................... 33

9.2 AC Specifications .................................................................................................................... 33

9.3 Performance ............................................................................................................................ 34

9.3.1 Receiver ....................................................................................................................... 34

9.3.2 Transmitter ................................................................................................................... 35

10 Mechanical Drawings

.................................................................................................................... 37

11 Ordering Information.....................................................................................................................

Appendix A

.......................................................................................................................................... 39

73M1903C DAA Resistor Calculation Guide .................................................................................... 39

Trans-Hybrid Loss (THL) ................................................................................................................. 41

Appendix B

.......................................................................................................................................... 42

Crystal Oscillator ............................................................................................................................. 42

PLL 43

Examples of NCO Settings .............................................................................................................. 44

Example 1 ............................................................................................................................... 44

Example 2 ............................................................................................................................... 45

Example 3 ............................................................................................................................... 46

Example 4 ............................................................................................................................... 47

Revision History

.................................................................................................................................. 48

Rev. 5.0

DS_1903C_033

73M1903C Data Sheet

Figures

Figure 1: SCLK and

with SckMode=0 ................................................................................................. 8

Figure 2: Control Frame Position versus SPOS........................................................................................ 8

Figure 3: Serial Port Timing Diagrams ..................................................................................................... 9

Figure 4: 73M1903C Host Connection in Master and Slave Modes ........................................................ 10

Figure 5: 73M1903C Daisy Chaining for Master/Slave Mode and Slave Modes ...................................... 10

Figure 6: Clock Generation .................................................................................................................... 19

Figure 7: Analog Block Diagram............................................................................................................. 22

Figure 8: Overall TX Path Frequency Response at 8 kHz Sample Rate.................................................. 23

Figure 9: Frequency Response of TX Path for DC to 4 kHz in Band Signal at 8 kHz Sample Rate.......... 24

Figure 10: Overall Receiver Frequency Response at 8 kHz Sample Rate............................................... 26

Figure 11: Rx Passband Response at 8 kHz Sample Rate ..................................................................... 27

Figure 12: RXD Spectrum of 1 kHz Tone ............................................................................................... 28

Figure 13: RXD Spectrum of 0.5 kHz, 1 kHz, 2 kHz, 3 kHz and 3.5 kHz Tones of Equal Amplitudes ....... 28

Figure 14: Serial Port Data Timing ......................................................................................................... 32

Figure 15: Typical DAA Block Diagram .................................................................................................. 39

Figure 16: Single Transmitter Arrangement ............................................................................................ 40

Figure 17: Dual transmitter arrangement ................................................................................................ 41

Figure 18: NCO Block Diagram.............................................................................................................. 42

Figure 19: PLL Block Diagram ............................................................................................................... 43

Tables

Table 1: 32 QFN Pin Description.............................................................................................................. 4

Table 2: Register Map ........................................................................................................................... 12

Table 3: Fvco and Kvco Settings at 25°C ............................................................................................... 16

Table 4: PLL Power Down ..................................................................................................................... 18

Table 5: Clock Generation Register Settings for Fxtal = 27 MHz ............................................................ 19

Table 6: Clock Generation Register Settings for Fxtal = 24.576 MHz...................................................... 20

Table 7: Clock Generation Register Settings for Fxtal = 9.216 MHz........................................................ 20

Table 8: Clock Generation Register Settings for Fxtal = 24.000 MHz...................................................... 21

Table 9: Clock Generation Register Settings for Fxtal = 25.35 MHz........................................................ 21

Table 10: Peak to RMS Ratios and Maximum Transmit.......................................................................... 25

Table 11: Receive Gain ......................................................................................................................... 26

Table 12: Absolute Maximum Ratings .................................................................................................... 30

Table 13: Recommended Operation Conditions ..................................................................................... 30

Table 14: DC Characteristics ................................................................................................................. 31

Table 15: Serial Interface Timing ........................................................................................................... 32

Table 16: Reference Voltage Specifications ........................................................................................... 33

Table 17: Maximum Transmit Levels ...................................................................................................... 33

Table 18: Receiver Performance Specifications ..................................................................................... 34

Table 19: Transmitter Performance Specifications ................................................................................. 35

Rev. 5.0

73M1903C-IMR-F Related Products

	73M1903C-IMR-F	73M1903C-IM-F
Description	Analog Front End - AFE Modem Analog Front End	Analog Front End - AFE Modem Analog Front End
Product Category	Analog Front End - AFE	Analog Front End - AFE
Manufacturer	Maxim	Maxim
RoHS	Details	Details
Type	Modem AFE	Modem AFE
Product	Analog Front Ends	Analog Front Ends
Factory Pack Quantity	2500	490
Packaging	Reel	Tube

Recommended Resources

Do you know the connector selection considerations?

Characteristic curve circuit of semiconductor transistor

LA4500 audio IC amplifier circuit diagram

IL221AT/IL222AT/IL223AT type Darlington structure small surface mount optical coupling circuit

Three-phase asynchronous motor is changed to single-phase operation

Simple fully automatic nickel-cadmium battery charger

A problem encountered by LM3S+FATFS+U disk+FLASH: The function to be realized in the project is to copy data between the U disk (device 1/0) under FATFS and the external serial FLASH (device 0/1)The current situation is that when operating a device a...; LxiaoseI Microcontroller MCU

Design of intelligent window control system based on single chip microcomputer: [p=30, null, left][b] I. Introduction[/b] With the continuous development of electronic technology, many household electrical appliances such as color TVs, refrigerators, air conditioners, etc. have b...; fish001 Microcontroller MCU

Please advise, pointer function problem...: #define bHiByte(arg) (*(BYTE *)&arg) //High 8 bits #define bLoByte(arg) (*((BYTE *)&arg + 1)) //Low 8 bits These two functions are used to get the high 8 bits and the low 8 bits. I don't understand ho...; flyingsnows Embedded System

Xinjiang cuisine: Nang, tastes pretty good. But don't buy those near the train station, they are all scamming people from other places.Hand-pulled rice Roasted lamb leg Yogurt Drinks, made with hawthorn, raisins, dried...; ltbytyn Talking

DSP system design - clock and power supply related issues: Q: What aspects should be paid special attention to in the power supply design and clock design of DSP? Is it better to use active or passive external crystal oscillator?A: The clock generally uses cr...; 火辣西米秀 DSP and ARM Processors

【NXP USB Type C Review】 + LPC11U35 Program Development: The May Day holiday is over, and I am back to update a post. I have previously introduced and used some basic NXP USB Type-C boards. During the evaluation process, I have a certain understanding of th...; wufeijian Integrated technical exchanges

Shortcut: 00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W

Popular Components