MAX19707 datasheet(1/37 Pages) MAXIM

Part #	MAX19707

Description	10-Bit, 45Msps, Ultra-Low-Power Analog Front-End

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Manufacturer	MAXIM [Maxim Integrated Products]

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General Description

The MAX19707 is an ultra-low-power, mixed-signal ana-

log front-end (AFE) designed for power-sensitive com-

munication equipment. Optimized for high dynamic

performance at ultra-low power, the device integrates a

dual, 10-bit, 45Msps receive (Rx) ADC; dual, 10-bit,

45Msps 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 typ-

ical operating power in Tx-Rx FAST mode is 84.6mW at

a 45MHz clock frequency.

The Rx ADCs feature 54.2dB SNR and 71.2dBc SFDR

at fIN = 5.5MHz and fCLK = 45MHz. The analog I/Q

input amplifiers are fully differential and accept

1.024VP-P full-scale signals. Typical I/Q channel match-

ing is ±0.03° phase and ±0.01dB gain.

The Tx DACs feature 73.2dBc SFDR at fOUT = 2.2MHz

and fCLK = 45MHz. The analog I/Q full-scale output volt-

age is ±400mV differential. The Tx DAC common-mode

DC level is programmable from 0.71V to 1.05V. The I/Q

channel offset is programmable to optimize radio lineup

sideband/carrier suppresion. The typical I/Q channel

matching is ±0.01dB gain and ±0.07° phase.

The Rx ADC and Tx DAC share a single, 10-bit parallel,

high-speed digital bus allowing half-duplex operation

for time-division duplex (TDD) applications. A 3-wire

serial interface controls power-management modes, the

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

The MAX19707 operates on a single 2.7V to 3.3V ana-

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

MAX19707 is specified for the extended (-40°C to

+85°C) temperature range and is available in a 48-pin,

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

data sheet lists other pin-compatible versions in this

AFE family.

Applications

Features

♦ Dual, 10-Bit, 45Msps Rx ADC and Dual, 10-Bit,

45Msps Tx DAC

♦ Ultra-Low Power

84.6mW at fCLK = 45MHz, Fast Mode

77.1mW at fCLK = 45MHz, Slow Mode

Low-Current Standby and Shutdown Modes

♦ Programmable Tx DAC Common-Mode DC Level

and I/Q Offset Trim

♦ Excellent Dynamic Performance

SNR = 54.2dB at fIN = 5.5MHz (Rx ADC)

SFDR = 73.2dBc at fOUT = 2.2MHz (Tx DAC)

♦ Three 12-Bit, 1µs Aux-DACs

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

Data Averaging

♦ Excellent Gain/Phase Match

±0.03° Phase, ±0.01dB Gain (Rx ADC) at

fIN = 5.5MHz

♦ Multiplexed Parallel Digital I/O

♦ Serial-Interface Control

♦ Versatile Power-Control Circuits

Shutdown, Standby, Idle, Tx/Rx Disable

♦ Miniature 48-Pin Thin QFN Package

(7mm x 7mm x 0.8mm)

10-Bit, 45Msps, Ultra-Low-Power

Analog Front-End

________________________________________________________________ Maxim Integrated Products

1

19-3826; Rev 1; 6/07

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION

KIT

AVAILABLE

Ordering Information

PART*

PIN-PACKAGE

PKG CODE

MAX19707ETM

48 Thin QFN-EP**

T4877-4

MAX19707ETM+

48 Thin QFN-EP**

T4877-4

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

range.

**EP = Exposed paddle.

+Denotes lead-free package.

Functional Diagram and Selector Guide appear at end of

data sheet.

D9

D8

D6

OVDD

D4

D3

D2

D0

D1

OGND

D5

D7

VDD

IDN

IDP

GND

VDD

QDN

QDP

REFN

EXPOSED PADDLE (GND)

REFIN

DAC1

COM

DAC2

37

38

39

40

41

42

43

44

45

46

47

48

12

34

5

67

89

10

24

23

22

21

20

19

18

17

16

15

14

13

THIN QFN

MAX19707

TOP VIEW

11 12

36 35 34 33 32 31 30 29 28 27 26 25

Pin Configuration

WiMAX CPEs

802.11a/b/g WLAN

VoIP Terminals

Portable Communication

Equipment

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