19-4080; Rev 0; 4/08
50MHz to 1000MHz High-Linearity,
Serial/Analog-Controlled VGA
General Description
The MAX2067 high-linearity analog variable-gain ampli-
fier (VGA) is a monolithic SiGe BiCMOS attenuator and
amplifier designed to interface with 50Ω systems oper-
ating in the 50MHz to 1000MHz frequency range (see
the
Typical Application Circuit).
The analog attenuator
is controlled using an external voltage or through the
SPI™-compatible interface using an on-chip 8-bit DAC.
Because each stage has its own RF input and RF out-
put, this component can be configured to either opti-
mize NF (amplifier configured first), or OIP3 (amplifier
last). The device’s performance features include 22dB
amplifier gain (amplifier only), 4dB NF at maximum gain
(includes attenuator insertion loss), and a high OIP3
level of +43dBm. Each of these features makes the
MAX2067 an ideal VGA for numerous receiver and
transmitter applications.
In addition, the MAX2067 operates from a single +5V
supply with full performance, or a single +3.3V supply
with slightly reduced performance, and has an
adjustable bias to trade current consumption for linearity
performance. This device is available in a compact 40-
pin thin QFN package (6mm x 6mm) with an exposed
pad. Electrical performance is guaranteed over the
extended temperature range (T
C
= -40°C to +85°C).
o
Pin-Compatible Family Includes
MAX2065 (Analog/Digital VGA)
MAX2066 (Digital VGA)
o
+21.9dB (typ) Maximum Gain
o
0.5dB Gain Flatness Over 100MHz Bandwidth
o
31dB Gain Range
o
Built-In DAC for Analog Attenuation Control
o
Excellent Linearity (Configured with Amplifier
Last)
+43dBm OIP3
+66dBm OIP2
+19dBm Output 1dB Compression Point
-70dBc HD2
-87dBc HD3
o
4dB Typical Noise Figure (NF)
o
Single +5V Supply (Optional +3.3V Operation)
o
External Current-Setting Resistors Provide Option
for Operating Device in Reduced-Power/
Reduced-Performance Mode
Features
o
50MHz to 1000MHz RF Frequency Range
MAX2067
Applications
IF and RF Gain Stages
Temperature Compensation Circuits
Cellular Band WCDMA and cdma2000® Base
Stations
GSM 850/GSM 900 EDGE Base Stations
WiMAX and LTE Base Stations and Customer
Premise Equipment
Fixed Broadband Wireless Access
Wireless Local Loop
Military Systems
Video-on-Demand (VOD) and DOCSIS®-
Compliant EDGE QAM Modulation
Cable Modem Termination Systems (CMTS)
RFID Handheld and Portal Readers
Ordering Information
PART
MAX2067ETL+
MAX2067ETL+T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
40 Thin QFN-EP*
40 Thin QFN-EP*
+Denotes
a lead-free package.
*EP
= Exposed pad.
T = Tape and reel.
Pin Configuration appears at end of data sheet.
SPI is a trademark of Motorola, Inc.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
DOCSIS and CableLabs are registered trademarks of Cable
Television Laboratories, Inc. (CableLabs®).
________________________________________________________________
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.
50MHz to 1000MHz High-Linearity,
Serial/Analog-Controlled VGA
MAX2067
ABSOLUTE MAXIMUM RATINGS
VCC_ to GND ........................................................-0.3V to +5.5V
VDD_LOGIC, DATA,
CS,
CLK, VDAC_EN,
VREF_SELECT.....................................-0.3V to (VCC_ + 0.3V)
AMP_IN, AMP_OUT, VREF_IN,
ANALOG_VCTRL ................................-0.3V to (VCC_ + 0.3V)
ATTEN_IN, ATTEN_OUT........................................-1.2V to +1.2V
RSET to GND.........................................................-0.3V to +1.2V
RF Input Power (ATTEN_IN, ATTEN_OUT).....................+20dBm
RF Input Power (AMP_IN)...............................................+18dBm
Continuous Power Dissipation (Note 1) ...............................6.5W
θ
JA
(Notes 2, 3)..............................................................+38°C/W
θ
JC
(Note 3) ...................................................................+10°C/W
Operating Temperature Range (Note 4) .....T
C
= -40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1:
Based on junction temperature T
J
= T
C
+ (θ
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 printed-circuit board (PCB). See the
Applications Information
section
for details. The junction temperature must not exceed +150°C.
Note 2:
Junction temperature T
J
= T
A
+ (θ
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 +150°C.
Note 3:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer
board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
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.
+3.3V SUPPLY DC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
high-current (HC) mode, V
CC
= V
DD
= +3.0V to +3.6V, T
C
= -40°C to +85°C. Typical values are at V
CC
=
V
DD
= +3.3V and T
C
= +25°C, unless otherwise noted.)
PARAMETER
Supply Voltage
Supply Current
Input High Voltage
Input Low Voltage
SYMBOL
V
CC
I
CC
V
IH
V
IL
Note 5
CONDITIONS
MIN
3.0
TYP
3.3
60
2
0.8
MAX
3.6
82
UNITS
V
mA
V
V
LOGIC INPUTS (DATA,
CS,
CLK, VDAC_EN, VREF_SELECT)
+5V SUPPLY DC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
V
CC
= V
DD
= +4.75V to +5.25V, T
C
= -40°C to +85°C. Typical values are at V
CC
= V
DD
= +5V and
T
C
= +25°C, unless otherwise noted.)
PARAMETER
Supply Voltage
Supply Current
SYMBOL
V
CC
I
CC
Low-current (LC) mode
High-current (HC) mode
3
0.8
-1
-1
+1
+1
CONDITIONS
MIN
4.75
TYP
5
72
123
MAX
5.25
92
146
UNITS
V
mA
LOGIC INPUTS (DATA,
CS,
CLK, VDAC_EN, VREF_SELECT)
Input High Voltage
Input Low Voltage
Input Current Logic-High
Input Current Logic-Low
V
IH
V
IL
I
IH
I
IL
V
V
µA
µA
2
_______________________________________________________________________________________
50MHz to 1000MHz High-Linearity,
Serial/Analog-Controlled VGA
+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
V
CC
= V
DD
= +3.0V to +3.6V, T
C
= -40°C to +85°C. Typical values are at V
CC
= V
DD
= +3.3V, HC mode
with attenuator set for maximum gain, P
IN
= -20dBm, f
RF
= 200MHz, and T
C
= +25°C, unless otherwise noted.) (Note 6)
PARAMETER
RF Frequency Range
Small-Signal Gain
Output Third-Order Intercept
Point
Noise Figure
Total Attenuation Range
SYMBOL
f
RF
G
OIP3
NF
P
OUT
= 0dBm/tone, maximum gain setting
Maximum gain setting
(Notes 5, 7)
CONDITIONS
MIN
50
21.3
38
4.3
31
TYP
MAX
1000
UNITS
MHz
dB
dBm
dB
dB
MAX2067
+5V SUPPLY AC ELECTRICAL CHARACTERISTICS
(Typical
Application Circuit,
V
CC
= V
DD
= +4.75 to +5.25V, HC mode with attenuator set for maximum gain, 50MHz
≤
f
RF
≤
1000MHz,
T
C
= -40°C to +85°C. Typical values are at V
CC
= V
DD
= +5.0V, HC mode, P
IN
= -20dBm, f
RF
= 200MHz, and T
C
= +25°C, unless
otherwise noted.) (Note 6)
PARAMETER
RF Frequency Range
SYMBOL
f
RF
(Notes 5, 7)
200MHz
350MHz, T
C
= +25°C (Note 5)
Small-Signal Gain
G
450MHz
750MHz
900MHz
Gain Variation vs. Temperature
Gain Flatness vs. Frequency
Any 100MHz frequency band from 50MHz
to 500MHz
200MHz
350MHz, T
C
= +25°C (Note 5)
Noise Figure
NF
450MHz
750MHz
900MHz
Total Attenuation Range
Output Second-Order Intercept
Point
OIP2
P
OUT
= 0dBm/tone,
∆f
= 1MHz, f
1
+ f
2
200MHz
350MHz
P
OUT
= 0dBm/tone,
HC mode,
∆
f = 1MHz
Output Third-Order Intercept
Point
OIP3
450MHz
750MHz
900MHz
200MHz
350MHz
P
OUT
= 0dBm/tone,
450MHz
LC mode,
∆f
= 1MHz
750MHz
900MHz
20.3
CONDITIONS
MIN
50
21.9
21.3
20.9
19.4
18.7
-0.006
0.5
4
4.2
4.3
4.8
5
31
66
43
40.8
39.8
37.3
36.2
40
38.2
37.4
35.5
34.3
dBm
dB
dBm
5.2
dB
dB/°C
dB
22.3
dB
TYP
MAX
1000
UNITS
MHz
_______________________________________________________________________________________
3
50MHz to 1000MHz High-Linearity,
Serial/Analog-Controlled VGA
MAX2067
+5V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)
(Typical
Application Circuit,
V
CC
= V
DD
= +4.75 to +5.25V, HC mode with attenuator set for maximum gain, 50MHz
≤
f
RF
≤
1000MHz,
T
C
= -40°C to +85°C. Typical values are at V
CC
= V
DD
= +5.0V, HC mode, P
IN
= -20dBm, f
RF
= 200MHz, and T
C
= +25°C, unless
otherwise noted.) (Note 6)
PARAMETER
Output -1dB Compression Point
Second Harmonic
Third Harmonic
Attenuator Response Time
(Note 9)
Group Delay
Input Return Loss
Output Return Loss
ANALOG ATTENUATOR
Insertion Loss
Input Second-Order Intercept
Point
Input Third-Order Intercept Point
Attenuation Range
Gain-Control Slope
Maximum Gain-Control Slope
Insertion Phase Change
Group Delay vs. Control Voltage
Analog Control Input Range
Analog Control Input Impedance
Input Return Loss
Output Return Loss
DAC
Number of Bits
Output Voltage
DAC code = 00000000
DAC code = 11111111
2.75
8
0.25
Bits
V
50Ω source, maximum gain setting
50Ω load, maximum gain setting
IIP2
IIP3
P
RF1
= 0dBm, P
RF2
= 0dBm, maximum gain
setting,
∆f
= 1MHz, f
1
+ f
2
P
RF1
= 0dBm, P
RF2
= 0dBm, maximum gain
setting,
∆f
= 1MHz
Analog control input
Analog control input
Over analog control input range
Over analog control input range
Over analog control input range
0.25
80
22
22
1.2
70
36
31
-12.5
-35
18
-0.25
2.75
dB
dBm
dBm
dB
dB/V
dB/V
Degrees
ns
V
kΩ
dB
dB
SYMBOL
P
1dB
CONDITIONS
350MHz, T
C
= +25°C (Notes 5, 8)
P
OUT
= +3dBm, f
RF
= 200MHz, T
C
= +25°C
(Note 5)
P
OUT
= +3dBm, f
RF
= 200MHz, T
C
= +25°C
(Note 5)
Input from ANALOG_VCTRL
Input from
CS
rising edge
Maximum gain setting, includes EV kit PCB
delays
50Ω source, maximum gain setting
50Ω load, maximum gain setting
MIN
17
-61
-74
TYP
18.7
-70
-87
1
3.2
0.8
30
16
MAX
UNITS
dBm
dBc
dBc
µs
ns
dB
dB
4
_______________________________________________________________________________________
50MHz to 1000MHz High-Linearity,
Serial/Analog-Controlled VGA
+5V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)
(Typical
Application Circuit,
V
CC
= V
DD
= +4.75 to +5.25V, HC mode with attenuator set for maximum gain, 50MHz
≤
f
RF
≤
1000MHz,
T
C
= -40°C to +85°C. Typical values are at V
CC
= V
DD
= +5.0V, HC mode, P
IN
= -20dBm, f
RF
= 200MHz, and T
C
= +25
o
C, unless
otherwise noted.) (Note 6)
PARAMETER
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
SYMBOL
f
CLK
t
CS
t
CH
t
ES
t
EW
t
EWS
t
CW
CONDITIONS
MIN
TYP
20
2
2.5
3
7
3.5
5
MAX
UNITS
MHz
ns
ns
ns
ns
ns
ns
MAX2067
SERIAL PERIPHERAL INTERFACE (SPI)
Note 5:
Guaranteed by design and characterization.
Note 6:
All limits include external component losses. Output measurements are performed at RF output port of the
Typical
Application Circuit
Note 7:
Operating outside this range is possible, but with degraded performance of some parameters.
Note 8:
It is advisable not to continuously operate the VGA RF input above +15dBm.
Note 9:
Response time includes full attenuation range change with output setting to within ±0.1dB.
_______________________________________________________________________________________
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
