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MAX19710

Description
10-Bit, 7.5Msps, Full-Duplex Analog Front-End
File Size811KB,37 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet View All

MAX19710 Overview

10-Bit, 7.5Msps, Full-Duplex Analog Front-End

19-0526; Rev 0; 5/06
KIT
ATION
EVALU
BLE
AVAILA
10-Bit, 7.5Msps, Full-Duplex
Analog Front-End
General Description
Features
Dual 10-Bit, 7.5Msps Rx ADC and Dual 10-Bit,
7.5Msps Tx DAC
Ultra-Low Power
30mW at f
CLK
= 7.5MHz, FD Mode
21.3mW at f
CLK
= 7.5MHz, Slow Rx Mode
21.9mW at f
CLK
= 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 f
IN
= 3.3MHz (Rx ADC)
SFDR = 73.8dBc at f
OUT
= 620kHz (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
±0.01° Phase, ±0.01dB Gain (Rx ADC) at
f
IN
= 1.8MHz
Multiplexed Parallel Digital I/O
Serial-Interface Control
Versatile Power-Control Circuits
Shutdown, Standby, Idle, Tx/Rx Disable
Miniature 56-Pin Thin QFN Package
(7mm x 7mm x 0.8mm)
MAX19710
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.
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
and accept 1.024V
P-P
full-scale signals. Typical I/Q
channel matching is ±0.01° phase and ±0.01dB gain.
The Tx DACs feature 73.8dBc SFDR at f
OUT
= 620kHz
and f
CLK
= 7.5MHz. The analog I-Q full-scale output volt-
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 ±0.15° phase.
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.
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 (-40°C to
+85°C) 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.
Pin Configuration
CS/WAKE
TOP VIEW
ADC2
GND
V
DD
V
DD
DOUT
SCLK
DA9
DA8
DA7
DA6
DA5
42 41 40 39 38 37 36 35 34 33 32 31 30 29
ADC1 43
DAC3 44
DAC2 45
DAC1 46
V
DD
47
IDN 48
IDP 49
GND 50
V
DD
51
28 DA3
27 DA2
26 DA1
25 DA0
24 OV
DD
23 OGND
22 AD9
Applications
Broadband Access
Radio
Private Mobile Radio
Portable Communication
Equipment
MAX19710
DA4
21 AD8
20 AD7
19 AD6
18 AD5
17 AD4
16 AD3
15 AD2
AD1
QDN 52
QDP 53
REFIN 54
COM 55
EXPOSED PADDLE (GND)
Ordering Information
PART*
MAX19710ETN
MAX19710ETN+
PIN-PACKAGE
56 Thin QFN-EP**
56 Thin QFN-EP**
PKG CODE
T5677-1
T5677-1
REFN 56
1
REFP
2
V
DD
3
IAP
4
IAN
5
GND
6
CLK
7
GND
8
V
DD
9
QAN
10 11 12 13 14
QAP
V
DD
GND
AD0
THIN QFN
NOTE:
THE PIN 1 INDICATOR IS “+” FOR LEAD-FREE DEVICES.
*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.
1
________________________________________________________________
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.
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