19-5511; Rev 1; 11/10
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Analog/Digital VGA
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.
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
MAX2062
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
Ordering Information
PART
MAX2062ETM+
MAX2062ETM+T
TEMP RANGE
-40NC to +85NC
-40NC to +85NC
PIN-PACKAGE
48 TQFN-EP*
48 TQFN-EP*
+Denotes
lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
T = Tape and reel.
SPI is a trademark of Motorola, Inc.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
WiMAX is a trademark of WiMAX Forum.
_______________________________________________________________
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.
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Analog/Digital VGA
MAX2062
ABSOLUTE MAXIMUM RATINGS
V
CC_AMP_1
, V
CC_AMP_2
, V
CC_RG
to GND ..........-0.3V
STA_A_1, STA_A_2, STA_B_1, STA_B_2,
PD_1, PD_2, AMPSET to GND .........................-0.3V
A_VCTL_1, A_VCTL_2 to GND .............................-0.3V
DAT,
CS,
CLK, AA_SP, DA_SP to GND ...............-0.3V
D0_1, D1_1, D2_1, D3_1, D4_1, D0_2, D1_2,
D2_2, D3_2, D4_2 to GND ...............................-0.3V
AMP_IN_1, AMP_IN_2 to GND ..........................+0.95V
AMP_OUT_1, AMP_OUT_2 to GND .....................-0.3V
D_ATT_IN_1, D_ATT_IN_2, D_ATT_OUT_1,
D_ATT_OUT_2 to GND ......................................... 0V
A_ATT_IN_1, A_ATT_IN_2, A_ATT_OUT_1,
A_ATT_OUT_2 to GND ......................................... 0V
to +5.5V
to +3.6V
to +3.6V
to +3.6V
to +3.6V
to +1.2V
to +5.5V
to +3.6V
to +3.6V
REG_OUT to GND ................................................-0.3V to +3.6V
RF Input Power (D_ATT_IN_1, D_ATT_IN_2) ............... +20dBm
RF Input Power (A_ATT_IN_1, A_ATT_IN_2) .............. +20dBm
RF Input Power (AMP_IN_1, AMP_IN_2)...................... +18dBm
q
JC
(Notes 1, 2) ......................................................... +12.3NC/W
q
JA
(Notes 2, 3) ............................................................ +38NC/W
Continuous Power Dissipation (Note 1) ..............................5.3W
Operating Case Temperature Range (Note 4) .. -40NC to +85NC
Junction Temperature .....................................................+150NC
Storage Temperature Range............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
Note 1:
Based on junction temperature T
J
= T
C
+ (q
JC
x V
CC
x I
CC
). This formula can be used when the temperature of the
exposed pad is known while the device is soldered down to a PCB. See the
Applications Information
section for details.
The junction temperature must not exceed +150NC.
Note 2:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
Note 3:
Junction temperature T
J
= T
A
+ (q
JA
x V
CC
x I
CC
). This formula can be used when the ambient temperature of the PCB is
known. The junction temperature must not exceed +150NC.
Note 4:
T
C
is the temperature on the exposed pad of the package. T
A
is the ambient temperature of the device and PCB.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
5.0V SUPPLY DC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
V
CC
= V
CC_AMP_1
= V
CC_AMP_2
= V
CC_RG
= 4.75V to 5.25V, AMPSET = 0, PD_1 = PD_2 = 0,
T
C
= -40NC to +85NC. Typical values are at V
CC_
= 5.0V and T
C
= +25NC, unless otherwise noted.)
PARAMETER
Supply Voltage
Supply Current
Power-Down Current
Logic-Low Input Voltage
Logic-High Input Voltage
Input Logic Current
SYMBOL
V
CC
I
DC
I
DCPD
V
IL
V
IH
I
IH,
I
IL
1.7
-1
PD_1 = PD_2 = 1, V
IH
= 3.3V
CONDITIONS
MIN
4.75
TYP
5
148
5.3
MAX
5.25
210
8
0.5
3.465
+1
UNITS
V
mA
mA
V
V
FA
3.3V SUPPLY DC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
V
CC
= V
CC_AMP_1
= V
CC_AMP_2
= V
CC_RG
= 3.135V to 3.465V, AMPSET = 1, PD_1 = PD_2 = 0,
T
C
= -40NC to +85NC. Typical values are at V
CC_
= 3.3V and T
C
= +25NC, unless otherwise noted.)
PARAMETER
Supply Voltage
Supply Current
Power-Down Current
Logic-Low Input Voltage
Logic-High Input Voltage
SYMBOL
V
CC
I
DC
I
DCPD
V
IL
V
IH
PD_1 = PD_2 = 1, V
IH
= 3.3V
CONDITIONS
MIN
3.135
TYP
3.3
87
4.5
0.5
1.7
MAX
3.465
145
8
UNITS
V
mA
mA
V
V
2
______________________________________________________________________________________
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Analog/Digital VGA
RECOMMENDED AC OPERATING CONDITIONS
PARAMETER
RF Frequency
SYMBOL
f
RF
(Note 5)
CONDITIONS
MIN
50
TYP
MAX
1000
UNITS
MHz
MAX2062
5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (Each Path, Unless Otherwise
Noted)
(Typical
Application Circuit,
V
CC
= V
CC_AMP_1
= V
CC_AMP_2
= V
CC_RG
= 4.75V to 5.25V, attenuators are set for maximum gain, RF
ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz
P
f
RF
P
500MHz, T
C
= -40NC to +85NC. Typical values
are at maximum gain setting, V
CC_
= 5.0V, P
IN
= -20dBm, f
RF
= 350MHz, and T
C
= +25NC, unless otherwise noted.) (Note 6)
PARAMETER
SYMBOL
f
RF
= 50MHz
f
RF
= 100MHz
f
RF
= 200MHz
Small-Signal Gain
G
f
RF
= 350MHz, T
C
= +25NC
f
RF
= 450MHz
f
RF
= 750MHz
f
RF
= 900MHz
Gain vs. Temperature
From 100MHz to 200MHz
Gain Flatness vs. Frequency
Any 100MHz frequency band from 200MHz
to 500MHz
f
RF
= 50MHz
f
RF
= 100MHz
f
RF
= 200MHz
Noise Figure
NF
f
RF
= 350MHz
f
RF
= 450MHz
f
RF
= 750MHz
f
RF
= 900MHz
Total Attenuation Range
Output Second-Order Intercept
Point
OIP2
Analog and digital combined
P
OUT
= 0dBm/tone,
Df
= 1MHz, f
1
+ f
2
RF input 1 amplified power measured at RF
output 2 relative to RF output 1, all unused
ports terminated to 50I
RF input 2 amplified signal measured at RF
output 1 relative to RF output 2, all unused
ports terminated to 50I
P
OUT
= 0dBm/tone,
Df
= 1MHz, f
RF
= 50MHz
P
OUT
= 0dBm/tone,
Df
= 1MHz, f
RF
= 100MHz
Output Third-Order Intercept
Point
P
OUT
= 0dBm/tone,
Df
= 1MHz, f
RF
= 200MHz
OIP3
P
OUT
= 0dBm/tone,
Df
= 1MHz, f
RF
= 350MHz
P
OUT
= 0dBm/tone,
Df
= 1MHz, f
RF
= 450MHz
P
OUT
= 0dBm/tone,
Df
= 1MHz, f
RF
= 750MHz
P
OUT
= 0dBm/tone,
Df
= 1MHz, f
RF
= 900MHz
Output -1dB Compression Point
P
1dB
f
RF
= 350MHz, T
C
= +25NC (Note 7)
17
17.0
CONDITIONS
MIN
TYP
20.3
19.9
19.4
18.9
18.6
17.8
16.5
-0.01
0.5
0.34
6.4
6.8
7.3
7.6
7.8
8.7
9.0
64.1
52.1
dB
dBm
dB
dB
dB/NC
21.0
dB
MAX
UNITS
48.6
dB
47.7
47.5
43.4
41.3
37.4
35.1
28.8
25.8
18.8
dBm
3
dBm
Path Isolation
_______________________________________________________________________________________
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Analog/Digital VGA
MAX2062
5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (Each Path, Unless Otherwise
Noted) (continued)
(Typical
Application Circuit,
V
CC
= V
CC_AMP_1
= V
CC_AMP_2
= V
CC_RG
= 4.75V to 5.25V, attenuators are set for maximum gain, RF
ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz
P
f
RF
P
500MHz, T
C
= -40NC to +85NC. Typical values
are at maximum gain setting, V
CC_
= 5.0V, P
IN
= -20dBm, f
RF
= 350MHz, and T
C
= +25NC, unless otherwise noted.) (Note 6)
PARAMETER
Second Harmonic
Third Harmonic
Group Delay
Amplifier Power-Down Time
Amplifier Power-Up Time
Input Return Loss
Output Return Loss
Insertion Loss
Input Second-Order Intercept
Point
Input Third-Order Intercept Point
Attenuation Range
Step Size
Relative Attenuation Accuracy
Absolute Attenuation Accuracy
0dB to 16dB
Insertion Phase Step
f
RF
= 170MHz
0dB to 24dB
0dB to 31dB
Amplitude Overshoot/Undershoot
Switching Speed
Input Return Loss
Output Return Loss
Insertion Loss
Input Second-Order Intercept
Point
Input Third-Order Intercept Point
P
IN1
= 0dBm, P
IN2
= 0dBm (minimum
attenuation),
Df
= 1MHz, f
1
+ f
2
P
IN1
= 0dBm, P
IN2
= 0dBm (minimum
attenuation),
Df
= 1MHz
Between any two Elapsed time = 15ns
states
Elapsed time = 40ns
RF settled to
within
Q0.1dB
50I source
50I load
31dB to 0dB
0dB to 31dB
P
IN1
= 0dBm, P
IN2
= 0dBm (minimum
attenuation),
Df
= 1MHz, f
1
+ f
2
P
IN1
= 0dBm, P
IN2
= 0dBm (minimum
attenuation),
Df
= 1MHz
f
RF
= 350MHz, T
C
= +25NC, V
CC
= 5.0V
29.5
RL
IN
RL
OUT
SYMBOL
CONDITIONS
P
OUT
= +3dBm
P
OUT
= +3dBm
Includes EV kit PCB delays
PD_1 or PD_2 from 0 to 1, amplifier DC
supply current settles to within 0.1mA
PD_1 or PD_2 from 1 to 0, amplifier DC
supply current settles to within 1%
50I source
50I load
MIN
TYP
-55.0
-72.7
1.03
0.5
0.5
16.1
30.8
3.0
53.6
41.5
30.9
1
0.13
0.14
0
1.1
1.2
1.0
0.05
25
21
22.0
21.9
2.2
61.9
37.0
dB
ns
dB
dB
dB
dBm
dBm
Degrees
MAX
UNITS
dBc
dBc
ns
Fs
Fs
dB
dB
dB
dBm
dBm
dB
dB
dB
dB
DIGITAL ATTENUATOR (Each Path, Unless Otherwise Noted)
ANALOG ATTENUATOR (Each Path, Unless Otherwise Noted)
4
______________________________________________________________________________________
Dual 50MHz to 1000MHz High-Linearity,
Serial/Parallel-Controlled Analog/Digital VGA
5.0V SUPPLY AC ELECTRICAL CHARACTERISTICS (Each Path, Unless Otherwise
Noted) (continued)
(Typical
Application Circuit,
V
CC
= V
CC_AMP_1
= V
CC_AMP_2
= V
CC_RG
= 4.75V to 5.25V, attenuators are set for maximum gain, RF
ports are driven from 50I sources, AMPSET = 0, PD_1 = PD_2 = 0, 100MHz
P
f
RF
P
500MHz, T
C
= -40NC to +85NC. Typical values
are at maximum gain setting, V
CC_
= 5.0V, P
IN
= -20dBm, f
RF
= 350MHz, and T
C
= +25NC, unless otherwise noted.) (Note 6)
PARAMETER
Attenuation Range
Gain Control Slope
Maximum Gain Control Slope
Insertion Phase Change
SYMBOL
CONDITIONS
f
RF
= 350MHz, T
C
= +25NC, V
CC
= 5.0V
Analog control input
Over analog control input range
Over analog control input range
AA_SP = 0, V
A_VCTL__
from 2.75V to 0.25V
AA_SP = 1, DAC code
from 11111111 to
00000000, from
CS
rising
edge
AA_SP = 0, V
A_VCTL__
from 0.25V to 2.75V
AA_SP = 1, DAC code
from 00000000 to
11111111, from
CS
rising
edge
Group Delay vs. Control Voltage
Analog Control Input Range
Analog Control Input Impedance
Input Return Loss
Output Return Loss
D/A CONVERTER
Number of Bits
Output Voltage
SERIAL PERIPHERAL INTERFACE (SPI)
Maximum Clock Speed
Data-to-Clock Setup Time
Data-to-Clock Hold Time
Clock-to-CS Setup Time
CS
Positive Pulse Width
CS
Setup Time
Clock Pulse Width
t
CS
t
CH
t
ES
t
EW
t
EWS
t
CW
20
2
2.5
3
7
3.5
5
MHz
ns
ns
ns
ns
ns
ns
DAC code = 00000000
DAC code = 11111111
2.7
8
0.35
Bits
V
50I source
50I load
Over analog control input from 0.25V to
2.75V
0.25
19.2
16.1
16.8
MIN
29.5
TYP
33.2
-13.3
-35.2
17.6
500
MAX
UNITS
dB
dB/V
dB/V
Deg
MAX2062
500
ns
500
Attenuator Response Time
RF settled to
within
Q0.5dB
500
-0.34
2.75
ns
V
kI
dB
dB
_______________________________________________________________________________________
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
