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MAX19712

更新时间： 2024-11-09 12:32:23

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
36页	770K
描述
10-Bit, 22Msps, Full-Duplex Analog Front-End

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MAX19712 数据手册

19-0528; Rev 0; 5/06

10-Bit, 22Msps, Full-Duplex

Analog Front-End

MAX9712

General Description

Features

♦ Dual 10-Bit, 22Msps Rx ADC and Dual 10-Bit,

The MAX19712 is an ultra-low-power, highly integrated

mixed-signal analog front-end (AFE) ideal for wideband

communication applications operating in full-duplex

(FD) mode. Optimized for high dynamic performance

and ultra-low power, the device integrates a dual 10-bit,

22Msps receive (Rx) ADC; dual 10-bit, 22Msps transmit

(Tx) DAC; three fast-settling 12-bit aux-DAC channels

for ancillary RF front-end control; and a 10-bit, 333ksps

housekeeping aux-ADC. The typical operating power in

FD mode is 50.4mW at a 22MHz clock frequency.

22Msps Tx DAC

♦ Ultra-Low Power

50.4mW at f_CLK= 22MHz, FD Mode

39.9mW at f_CLK= 22MHz, Slow Rx Mode

33.9mW at f_CLK= 22MHz, Slow Tx Mode

Low-Current Standby and Shutdown Modes

♦ Programmable Tx DAC Common-Mode DC Level

and I/Q Offset Trim

♦ Excellent Dynamic Performance

SNR = 54.8dB at f_IN= 5.5MHz (Rx ADC)

The Rx ADCs feature 54.7dB SINAD and 75.6dBc SFDR

at 5.5MHz input frequency with a 22MHz clock frequen-

cy. The analog I/Q input amplifiers are fully differential

SFDR = 72.9dBc at f_OUT= 2.2MHz (Tx DAC)

♦ Three 12-Bit, 1μs Aux-DACs

♦ 10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and

and accept 1.024V

full-scale signals. Typical I/Q

P-P

Data Averaging

channel matching is 0.01ꢀ phase and 0.01dB gain.

♦ Excellent Gain/Phase Match

0.01° Phase, 0.01dB Gain (Rx ADC) at

f_IN= 5.5MHz

The Tx DACs feature 72.9dBc SFDR at f = 2.2MHz

OUT

and f

= 22MHz. The analog I-Q full-scale output volt-

CLK

age range is 400mV differential. The output DC com-

mon-mode voltage is from 0.89V to 1.36V. The I/Q

channel offset is adjustable to optimize radio lineup side-

band/carrier suppression. Typical I-Q channel matching

is 0.01dB gain and 0.1ꢀ phase.

♦ Multiplexed Parallel Digital I/O

♦ Serial-Interface Control

♦ Versatile Power-Control Circuits

Shutdown, Standby, Idle, Tx/Rx Disable

♦ Miniature 56-Pin Thin QFN Package

Two independent 10-bit parallel, high-speed digital

buses used by the Rx ADC and Tx DAC allow full-

duplex operation for frequency-division duplex applica-

tions. The Rx ADC and Tx DAC can be disabled

independently to optimize power management. A 3-wire

serial interface controls power-management modes, the

aux-DAC channels, and the aux-ADC channels.

(7mm x 7mm x 0.8mm)

Pin Configuration

TOP VIEW

The MAX19712 operates on a single 2.7V to 3.3V analog

supply and 1.8V to 3.3V digital I/O supply. The

MAX19712 is specified for the extended (-40ꢀC to

+85ꢀC) temperature range and is available in a 56-pin,

thin QFN package. The Selector Guide at the end of the

data sheet lists other pin-compatible versions in this AFE

family. For time-division duplex (TDD) applications, refer

to the MAX19705–MAX19708 AFE family of products.

42 41 40 39 38 37 36 35 34 33 32 31 30 29

ADC1

DAC3

DA3

DA2

DA1

DA0

DAC2 45

DAC1 46

IDN 48

IDP 49

GND 50

OGND

AD9

MAX19712

AD8

Applications

20 AD7

19 AD6

18 AD5

17 AD4

16 AD3

15 AD2

WCDMA Handsets

801.11a/b/g WLAN

RFID Readers

VoIP Terminals

Portable Communication

Equipment

QDN 52

QDP 53

REFIN 54

COM 55

REFN 56

EXPOSED PADDLE (GND)

Ordering Information

10 11 12 13 14

PART*

PIN-PACKAGE

56 Thin QFN-EP**

PKG CODE

MAX19712ETN

MAX19712ETN+

T5677-1

THIN QFN

NOTE: THE PIN 1 INDICATOR IS “+” FOR LEAD-FREE DEVICES.

T5677-1

*All devices are specified over the -40ꢀC to +85ꢀC operating range.

**EP = Exposed paddle. +Denotes lead-free package.

Functional Diagram and Selector Guide appear at end of

data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...36

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与MAX19712相关器件

型号	品牌	获取价格	描述	数据表
MAX19712ETN	MAXIM	获取价格	10-Bit, 22Msps, Full-Duplex Analog Front-End
MAX19712ETN+	MAXIM	获取价格	Telecom Circuit, 1-Func, CMOS, 7 X 7 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220, TQFN-56
MAX19712ETN+T	MAXIM	获取价格	Telecom Circuit, 1-Func, CMOS, 7 X 7 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220, TQFN-56
MAX19712ETN-T	MAXIM	获取价格	Telecom Circuit, 1-Func, CMOS, 7 X 7 MM, 0.80 MM HEIGHT, MO-220, TQFN-56
MAX19712EVCMODU+	MAXIM	获取价格	Low-Voltage and Low-Power Operation
MAX19712EVKIT+	MAXIM	获取价格	Low-Voltage and Low-Power Operation
MAX19713	MAXIM	获取价格	10-Bit, 45Msps, Full-Duplex Analog Front-End
MAX19713	ADI	获取价格	10位、45Msps、全双工模拟前端
MAX19713ETN	MAXIM	获取价格	10-Bit, 45Msps, Full-Duplex Analog Front-End
MAX19713ETN-T	MAXIM	获取价格	Telecom Circuit, 1-Func, CMOS, 7 X 7 MM, 0.80 MM HEIGHT, MO-220, TQFN-56

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