19-0526; Rev 0; 5/06
10-Bit, 7.5Msps, Full-Duplex
Analog Front-End
MAX9710
General Description
Features
♦ Dual 10-Bit, 7.5Msps Rx ADC and Dual 10-Bit,
The MAX19710 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,
7.5Msps receive (Rx) ADC; dual 10-bit, 7.5Msps 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 30mW at a 7.5MHz clock frequency.
7.5Msps Tx DAC
♦ Ultra-Low Power
30mW at fCLK = 7.5MHz, FD Mode
21.3mW at fCLK = 7.5MHz, Slow Rx Mode
21.9mW at fCLK = 7.5MHz, 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 = 54.9dB at fIN = 3.3MHz (Rx ADC)
The Rx ADCs feature 54.8dB SINAD and 79.8dBc SFDR
at 3.3MHz input frequency with a 7.5MHz clock frequen-
cy. The analog I/Q input amplifiers are fully differential
SFDR = 73.8dBc at fOUT = 620kHz (Tx DAC)
♦ Three 12-Bit, 1μs Aux-DACs
and accept 1.024V
full-scale signals. Typical I/Q
P-P
♦ 10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and
channel matching is 0.01ꢀ phase and 0.01dB gain.
Data Averaging
The Tx DACs feature 73.8dBc SFDR at f = 620kHz
OUT
♦ Excellent Gain/Phase Match
0.01° Phase, 0.01dB Gain (Rx ADC) at
fIN = 1.8MHz
and f
= 7.5MHz. 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 0.15ꢀ phase.
♦ Multiplexed Parallel Digital I/O
♦ Serial-Interface Control
♦ Versatile Power-Control Circuits
Shutdown, Standby, Idle, Tx/Rx Disable
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.
♦ Miniature 56-Pin Thin QFN Package
(7mm x 7mm x 0.8mm)
Pin Configuration
TOP VIEW
The MAX19710 operates on a single 2.7V to 3.3V analog
supply and 1.8V to 3.3V digital I/O supply. The
MAX19710 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
28
27
26
25
24
23
22
21
ADC1
DAC3
DA3
DA2
DA1
DA0
43
44
DAC2 45
DAC1 46
V
47
OV
DD
DD
IDN 48
IDP 49
GND 50
OGND
AD9
Applications
MAX19710
AD8
V
51
20 AD7
19 AD6
18 AD5
17 AD4
16 AD3
15 AD2
DD
QDN 52
QDP 53
Broadband Access
Radio
Portable Communication
Equipment
REFIN 54
COM 55
REFN 56
Private Mobile Radio
EXPOSED PADDLE (GND)
Ordering Information
1
2
3
4
5
6
7
8
9
10 11 12 13 14
PART*
PIN-PACKAGE
56 Thin QFN-EP**
56 Thin QFN-EP**
PKG CODE
THIN QFN
NOTE: THE PIN 1 INDICATOR IS “+” FOR LEAD-FREE DEVICES.
MAX19710ETN
MAX19710ETN+
T5677-1
T5677-1
Functional Diagram and Selector Guide appear at end of
data sheet.
*All devices are specified over the -40ꢀC to +85ꢀC operating range.
**EP = Exposed paddle. +Denotes lead-free package.
________________________________________________________________ Maxim Integrated Products
1
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.
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