19-0512; Rev 0; 6/06
700MHz to 1200MHz High-Linearity,
SPI-Controlled DVGA with Integrated Loopback Mixer
General Description
The MAX2058 high-linearity digital-variable-gain ampli-
fier (DVGA) is designed to provide 62dB of total gain
range and typical output IP3 and output P1dB levels of
+32.3dBm and +19dBm, respectively. The device is
ideal for a variety of applications, including RFID hand-
held and portal readers, as well as single and multicar-
rier 700MHz to 1200MHz GSM/EDGE, cdma2000
®
,
WCDMA, and iDEN
®
base stations. The MAX2058
yields a high level of component integration, which
includes two 5-bit, 31dB digital attenuators, a two-stage
driver amplifier, a loopback mixer, and a serial interface
to control the attenuators.
The MAX2058 is pin compatible with the MAX2059
1800MHz to 2200MHz DVGA, facilitating an easy
design-in for applications where a common PC board
layout is used for both frequency bands.
The MAX2058 is available in a 40-pin thin QFN pack-
age with an exposed paddle. Electrical performance is
guaranteed over a -40°C to +85°C temperature range.
♦
+32.3dBm Typical Output IP3
♦
+19dBm Typical Output 1dB Compression Point
♦
700MHz to 1200MHz RF Frequency Range
♦
1800MHz to 2200MHz RF Frequency Range
(MAX2059)
♦
10.5dB Typical Small-Signal Gain
♦
Includes Two Independent 31dB Attenuator
Stages, Yielding 62dB of Total Gain-Control
Range with 1dB Steps
♦
3-Wire SPI™/MICROWIRE™-Compatible
♦
Integrated Loopback Mixer for Tx/Rx Self-
Diagnostics
♦
+5V Single-Supply Operation
♦
External Current-Setting Resistors for Scalable
Device Power
♦
Lead-Free Package Available
Features
MAX2058
Applications
GSM 850/GSM 900 2G and 2.5G EDGE Base-
Station Transmitters and Power Amplifiers
Cellular cdmaOne™, cdma2000, and Integrated
Digital Enhanced Network (iDEN) Base-Station
Transmitters and Power Amplifiers
WCDMA 850MHz and Other 3G Base-Station
Transmitters and Power Amplifiers
Transmitter Gain Control
Receiver Gain Control
Broadband Systems
Automatic Test Equipment
Digital and Spread-Spectrum Communication
Systems
Microwave Terrestrial Links
RFID Handheld and Portal Readers
SPI is a trademark of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
iDEN is a registered trademark of Motorola, Inc.
cdmaOne is a trademark of CDMA Development Group.
Ordering Information
PART
MAX2058ETL
MAX2058ETL-T
MAX2058ETL+
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
PKG
CODE
40 Thin QFN-EP**
T4066-3
(6mm x 6mm)
40 Thin QFN-EP**
T4066-3
(6mm x 6mm)
40 Thin QFN-EP**
T4066-3
(6mm x 6mm)
40 Thin QFN-EP**
T4066-3
(6mm x 6mm)
MAX2058ETL+T -40°C to +85°C
**EP
= Exposed paddle.
+Denotes
lead-free package.
T
= Tape-and-reel.
Pin Configuration/Functional Diagram appears at end of data
sheet.
________________________________________________________________
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.
700MHz to 1200MHz High-Linearity,
SPI-Controlled DVGA with Integrated Loopback Mixer
MAX2058
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND ...........................................................-0.3V to +5.5V
RSET1, RSET2......................................................+1.2V to +4.0V
LBBIAS .......................................................(V
CC
- 1.5V) to +5.5V
LB_EN, DATA,
CS,
CLK .............................-0.3V to (V
CC
+ 0.3V)
ATTEN_INA, ATTEN_INB, ATTEN_OUTA, ATTEN_OUTB
Input Power .................................................................+24dBm
AMPIN, Differential LO Input Power ...............................+12dBm
Continuous Power Dissipation (T
A
= +70°C)
40-Pin TQFN (derated 26.3mW/°C above +70°C) ......2100mW
Operating Temperature Range (Note A) .............-40°C to +85°C
Junction Temperature ......................................................+150°C
θ
JC
....................................................................................10°C/W
θ
JA
....................................................................................38°C/W
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note A:
T
C
is the temperature on the exposed paddle of the package.
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.
DC ELECTRICAL CHARACTERISTICS
(MAX2058
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, R1 = 1.2kΩ, R2 = 3.92kΩ, R3 = 2kΩ, T
C
= -40°C to +85°C. Typical
values are at V
CC
= +5.0V and T
C
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Total Supply Current
SYMBOL
V
CC
I
CC
CONDITIONS
Reference to V
CC
, VCCLB, VCCLOGIC,
VCCBIAS1, VCCBIAS2, VCCAMP
LB mixer disabled (LB_EN = 1)
LB mixer enabled (LB_EN = 0)
2.4
0.8
0.01
0.01
MIN
4.75
TYP
5.0
134
158
MAX
5.25
156
186
UNITS
V
mA
LOGIC INPUTS (DATA,
CS,
CLK, LB_EN)
Input High Voltage
Input Low Voltage
Input Current with Logic-High
Input Current with Logic-Low
V
IH
V
IL
I
IH
I
IL
V
V
µA
µA
AC ELECTRICAL CHARACTERISTICS
(MAX2058
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, digital attenuators set for maximum gain, 700MHz
≤
f
RF
≤
1200MHz,
40MHz
≤
f
LO
≤
100MHz, T
C
= -40°C to +85°C. Typical values are at V
CC
= 5.0V, P
IN
= 0dBm, f
RF
= 940MHz, P
LO
= -6dBm, f
LO
=
45MHz, f
LBOUT
= f
RF
- f
LO
, and T
C
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
RF Frequency (Note 2)
Small-Signal Gain
Gain Variation vs. Temperature
Output Power
Output Power Flatness
Attenuation Range
Output Third-Order Intercept
Point
OIP3
Two tones: f
RF1
= 940MHz, f
RF2
= 941MHz,
P
OUT1
= P
OUT2
= +5dBm
P
OUT
A
V
SYMBOL
MAX2058
MAX2059
f
RF
= 940MHz, T
C
= +25°C
All attenuation
settings
T
C
= -40°C to +25°C
T
C
= +25°C to +85°C
8.4
800MHz to 900MHz
900MHz to 1000MHz
CONDITIONS
MIN
700
1800
8.4
10.5
-0.014
-0.021
10.5
0.13
-0.52
62
32.3
12.8
TYP
MAX
1200
2200
12.8
UNITS
MHz
dB
dB/°C
dBm
dB
dB
dBm
P
IN
= 0dBm, f
RF
= 940MHz, T
C
= +25°C
P
IN
= 0dBm
2
_______________________________________________________________________________________
700MHz to 1200MHz High-Linearity,
SPI-Controlled DVGA with Integrated Loopback Mixer
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2058
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, digital attenuators set for maximum gain, 700MHz
≤
f
RF
≤
1200MHz,
40MHz
≤
f
LO
≤
100MHz, T
C
= -40°C to +85°C. Typical values are at V
CC
= 5.0V, P
IN
= 0dBm, f
RF
= 940MHz, P
LO
= -6dBm, f
LO
=
45MHz, f
LBOUT
= f
RF
- f
LO
, and T
C
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
Output -1dB Compression Point
(Note 3)
RMS Error Vector Magnitude
Spurious Emissions in 30kHz
Bandwidth (Note 4)
Noise Figure
Input Return Loss
Output Return Loss
5-BIT DIGITAL ATTENUATORS
Insertion Loss
Attenuator measured separately Z
S
= Z
L
=
50Ω
IIP3
Attenuator measured separately Z
S
= Z
L
=
50Ω, two tones: f
RF1
= 940MHz, f
RF2
=
941MHz, P
IN1
= P
IN2
= +5dBm
800MHz to 900MHz
900MHz to 1000MHz
800MHz to 1000MHz,
T
C
= -40°C to +25°C
800MHz to 1000MHz,
T
C
= +25°C to +85°C
3.3
dB
NF
50Ω source, minimum attenuation setting
50Ω load, minimum attenuation setting
SYMBOL
OP
1dB
EVM
P
OUT
= +12dBm, EDGE modulation
200kHz offset
P
OUT
= +12dBm,
EDGE modulation
400kHz offset
600kHz offset
1.2MHz offset
CONDITIONS
MIN
TYP
19
0.5
-39.2
-73.5
-82.7
-85.7
6.8
18
20
dB
dB
dB
dBc
MAX
UNITS
dBm
%
MAX2058
Input Third-Order Intercept Point
Control Range
Attenuation Step Size Variation
vs. Frequency
44
31
±0.08
±0.06
±0.002
dBm
dB
dB
Attenuation Variation vs.
Temperature
Step Size
Relative Step Accuracy
Absolute Step Accuracy
dB/°C
±0.003
1
-0.2
+0.4
-0.2
+0.5
dB
dB
dB
800MHz to 1000MHz
800MHz to 1000MHz
No RF input, attenuator A stepped from 0 to
2dB, 7dB to 9dB, 15dB to 17dB, 0 to 31dB,
31dB to 0dB, with attenuator B at 0dB;
attenuator B stepped from 0 to 2dB, 7dB to
9dB, 15dB to 17dB, 0 to 31dB, 31dB to
0dB, with attenuator A at 0dB
From chip select transitioning high to the
output settling to within 1dB of steady state
output
Spurious Emissions in 300kHz
Bandwidth (Note 5)
-85
dBm
Switching Speed
0.3
µs
_______________________________________________________________________________________
3
700MHz to 1200MHz High-Linearity,
SPI-Controlled DVGA with Integrated Loopback Mixer
MAX2058
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2058
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, digital attenuators set for maximum gain, 700MHz
≤
f
RF
≤
1200MHz,
40MHz
≤
f
LO
≤
100MHz, T
C
= -40°C to +85°C. Typical values are at V
CC
= 5.0V, P
IN
= 0dBm, f
RF
= 940MHz, P
LO
= -6dBm, f
LO
=
45MHz, f
LBOUT
= f
RF
- f
LO
, and T
C
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
LOOPBACK MIXER
LO Frequency (Note 2)
LO Input Power
Output Power (Note 6)
Gain Accuracy
Output Third-Order Intercept
Point (Note 6)
Output Noise Floor
ON/OFF Switching Time
LBOUT to ATTEN_OUTB Isolation
ATTEN_OUTB to LBOUT Isolation
Output Return Loss
LO Port Return Loss
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
Negative Pulse Width
CLOCK Pulse Width
t
CS
t
CH
t
ES
t
EW
t
EWN
t
CW
38
1
9
4
18
24
13
MHz
ns
ns
ns
ns
ns
ns
OIP3
f
LO
P
LO
P
IN
= +5dBm, f
RF
= 940MHz, T
C
= +25°C
P
IN
= +5dBm, T
C
= -40°C to +25°C
800MHz to 900MHz
900MHz to 1000MHz
-14.7
40
-6
-12.7
±1.7
±1.7
10.6
-137
0.12
0.12
67
50
22
23
32
100
0
-10.8
MHz
dBm
dBm
dB
dBm
dBc/Hz
µs
dB
dB
dB
dB
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Two tones: f
RF1
= 940MHz, f
RF2
= 940.2MHz,
P
IN1
= P
IN2
= +2dBm, T
C
= +25°C
P
IN
= +5dBm
LB_EN enable time
LB_EN disable time
Mixer enabled, attenuators A and B both set
to 31dB, P
IN
= +5dBm
Mixer disabled, P
IN
= 0dBm
Mixer enabled, 50Ω load
Mixer disabled, 50Ω load
50Ω source
Note 1:
All limits include external component losses. Output measurements taken at RFOUT or LBOUT ports of the
Typical
Application Circuit.
Note 2:
Operating outside this range is possible, but with degraded performance of some parameters.
Note 3:
Compression point characterized. It is advisable not to continuously operate the VGA RF input above +15dBm.
Note 4:
Input RF source contribution to spurious emissions (Agilent ESG 4435B, PSA E4443A): 200kHz = -39.2dBc,
400kHz = -73.5dBc, 600kHz = -83.2dBc, 1.2MHz = -85.7dBc
Note 5:
No SPI clock input applied.
Note 6:
Guaranteed by design and characterization.
4
_______________________________________________________________________________________
700MHz to 1200MHz High-Linearity,
SPI-Controlled DVGA with Integrated Loopback Mixer
Typical Operating Characteristics
(MAX2058
Typical Application Circuit,
V
CC
= +4.75V to +5.25V, digital attenuators set for maximum gain, 700MHz
≤
f
RF
≤
1200MHz,
40MHz
≤
f
LO
≤
100MHz, T
C
= -40°C to +85°C. Typical values are at V
CC
= 5.0V, P
IN
= 0dBm, f
RF
= 940MHz, f
LO
= 45MHz, f
LBOUT
=
f
RF
- f
LO
, and T
C
= +25°C, unless otherwise noted.)
GAIN vs. RF FREQUENCY
GAIN vs. RF FREQUENCY
GAIN vs. RF FREQUENCY
(MAXIMUM GAIN)
ADJUSTING ATTEN A
(MAXIMUM GAIN)
MAX2058 toc01
MAX2058
12
11
GAIN (dB)
T
C
= +5°C
T
C
= -40°C
12
11
GAIN (dB)
10
9
8
7
6
V
CC
= 5.25V
MAX2058 toc02
5
GAIN (dB)
10
9
8
7
6
700
800
900
1000
1100
RF FREQUENCY (MHz)
1200
T
C
= +25°C
T
C
= +85°C
V
CC
= 5.0V
V
CC
= 4.75V
-5
-15
-25
700
800
900
1000
1100
1200
700
800
RF FREQUENCY (MHz)
900
1000
1100
RF FREQUENCY (MHz)
1200
ATTEN A ABS ACCURACY vs. RF FREQUENCY
MAX2058 toc04
ATTEN A REL ACCURACY vs. RF FREQUENCY
MAX2058 toc05
GAIN vs. RF FREQUENCY
ADJUSTING ATTEN B
MAX2058 toc06
1.0
1.0
15
0.5
ERROR (dB)
ERROR (dB)
0.5
GAIN (dB)
5
0
0
-5
-0.5
-0.5
-15
-1.0
700
800
900
1000
1100
RF FREQUENCY (MHz)
1200
-1.0
700
800
900
1000
1100
RF FREQUENCY (MHz)
1200
-25
700
800
900
1000
1100
RF FREQUENCY (MHz)
1200
ATTEN B ABS ACCURACY vs. RF FREQUENCY
MAX2058 toc07
ATTEN B REL ACCURACY vs. RF FREQUENCY
MAX2058 toc08
OUTPUT IP3 vs. RF FREQUENCY
T
C
= +5°C T
C
= -40°C
33
OUTPUT IP3 (dBm)
MAX2058 toc09
1.0
1.0
34
0.5
ERROR (dB)
ERROR (dB)
0.5
32
0
0
31
T
C
= +25°C
T
C
= +85°C
-0.5
-0.5
30
-1.0
700
-1.0
800
900
1000
1100
RF FREQUENCY (MHz)
1200
700
800
900
1000
1100
RF FREQUENCY (MHz)
1200
29
800
850
900
950
RF FREQUENCY (MHz)
1000
_______________________________________________________________________________________
MAX2058 toc03
13
13
15
5
DSP 与 ARM 处理器
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