Rainbow Electronics MAX2062 - Manual

_______________________________________________________________ Maxim Integrated Products 1
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.
MAX2062
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Analog/Digital VGA
19-5511; Rev 1; 11/10
General Description
The MAX2062 high-linearity, dual analog/digital variable-
gain amplifier (VGA) operates in the 50MHz to 1000MHz
frequency range with two independent attenuators in
each signal path. Each digital attenuator is controlled
as a slave peripheral using either the SPIK-compatible
interface, or a 5-bit parallel bus with 31dB total adjust-
ment range in 1dB steps. An added feature allows
rapid-fire gain selection among each of the four steps,
preprogrammed by the user through the SPI-compatible
interface. A separate 2-pin control lets the user quickly
access any one of four customized attenuation states
without reprogramming the SPI bus. Each analog attenu-
ator is controlled using an external voltage or through the
SPI-compatible interface using an on-chip 8-bit DAC.
Since each of the stages has its own external RF input
and RF output, this component can be configured to
either optimize noise figure (NF) (amplifier configured
first), OIP3 (amplifier last), or a compromise of NF and
OIP3. The device’s performance features include 24dB
amplifier gain (amplifier only), 7.3dB NF at maximum
gain (includes attenuator insertion losses), and a high
OIP3 level of +41dBm. Each of these features makes
the device an ideal VGA for multipath receiver and trans-
mitter applications.
In addition, the device operates from a single +5V
supply with full performance or a +3.3V supply for an
enhanced power-savings mode with lower performance.
The device is available in a compact 48-pin TQFN
package (7mm x 7mm) with an exposed pad. Electrical
performance is guaranteed over the extended tempera-
ture range, from T
C = -40NC to +85NC.
Applications
IF and RF Gain Stages
Temperature-Compensation Circuits
GSM/EDGE Base Stations
WCDMA, TD-SCDMA, and cdma2000
M Base
Stations
WiMAXK, LTE, and TD-LTE Base Stations and
Customer-Premise Equipment
Fixed Broadband Wireless Access
Wireless Local Loop
Military Systems
Features
S Independently Controlled Dual Paths
S
50MHz to 1000MHz RF Frequency Range
S Pin-Compatible Family Includes
MAX2063 (Digital-Only VGA)
MAX2064 (Analog-Only VGA)
S
19.4dB (typ) Maximum Gain
S 0.34dB Gain Flatness Over 100MHz Bandwidth
S
64dB Gain Range (33dB Analog Plus 31dB Digital)
S 56dB Path Isolation (at 200MHz)
S Built-In 8-Bit DACs for Analog Attenuation Control
S Supports Four Rapid-Fire Preprogrammed
Attenuator States
Quickly Access Any One of Four Customized
Attenuator States
Ideal for Fast-Attack, High-Level Blocker
Protection
Protects ADC Overdrive Condition
S
Excellent Linearity (Configured with Amp Last at
200MHz)
+41dBm OIP3
+56dBm OIP2
+19dBm Output 1dB Compression Point
S
7.3dB Typical Noise Figure (at 200MHz)
S Fast, 25ns Digital Switching
S Very Low Digital VGA Amplitude Overshoot/
Undershoot
S Single +5V Supply (or +3.3V Operation)
S Amplifier Power-Down Mode for TDD Applications
+Denotes lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
Ordering Information
SPI is a trademark of Motorola, Inc.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
WiMAX is a trademark of WiMAX Forum.
PART TEMP RANGE PIN-PACKAGE
MAX2062ETM+ -40NC to +85NC 48 TQFN-EP*
MAX2062ETM+T -40NC to +85NC 48 TQFN-EP*