19-2108; Rev 0; 7/01
IT
TION K
VALUA
E
BLE
AVAILA
W-CDMA Upconverter and PA Driver
with Power Control
General Description
Features
o
+6dBm Output Power with -46dBc ACPR
o
Ultra-Miniature UCSP Package
o
Upconverter Gain-Control Range: 35dB
o
Automatic Dynamic Current Control
o
12mA Quiescent Supply Current
o
On-Chip LO Buffer with Disable
o
Low Out-of-Band Noise Power in RX Band:
≤
-144dBm/Hz at +6dBm P
OUT
o
No Interstage TX SAW Bandpass Filter Required
MAX2383
The MAX2383 upconverter and PA driver IC
is designed for emerging ARIB (Japan) and
ETSI-UMTS (Europe) W-CDMA applications. The IC
includes an upconversion mixer with variable gain con-
trol, an LO buffer, and a variable-gain PA driver for out-
put power control.
The MAX2383 is designed to support the IMT-2000
frequency band. It includes a differential IF input port,
an LO input port, and PA driver input/output ports. The
upconverter mixer incorporates an AGC with over 30dB
of gain control. The IC provides automatic throttle-back
of PA driver and mixer current as output power is
reduced. The main signal path and the LO buffer can
be shutdown independently. The on-chip LO buffer can
be kept ON while the main transmitter path is being
turned on and off to minimize VCO pulling during TX
gated-transmission.
The MAX2383 is specified for +2.7V to +3.0V single
supply and is housed in an ultra-miniature 3 x 4
UCSP™ package for optimum cost- and space-reduc-
tion and for best RF performance. The IC is targeted for
the 2270MHz to 2580MHz LO frequency range. It is
fabricated using an advanced high-frequency bipolar
process. The mixer and PA driver linearity have been
optimized to provide excellent RF performance in the
1920MHz to 1980MHz band, while drawing minimal
current. The mixer’s performance is optimized for a
-10dBm ±3dB LO drive at the LO buffer input port. The
LO port can be configured to be driven either single-
ended or differentially.
The MAX2383 achieves excellent noise and image sup-
pression without the use of an interstage TX SAW band-
pass filter, thereby saving valuable board space, cost,
and supply current.
For LNA and downconverter mixer companion ICs, see
the MAX2387/MAX2388/MAX2389 data sheet.
Ordering Information
PART
MAX2383EBC
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
3 x 4 UCSP
ACTUAL SIZE
UCSP
2mm
✕
1.5mm
Block Diagram
TOP VIEW
Applications
Japanese 3G Cellular Phones (ARIB)
European 3G Cellular Phones (UMTS)
Chinese 3G Cellular Phones (TD-SCDMA)
PCS Phones
Pin Configuration appears at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
LO+ /
LO_EN
A1
V
CC
A2
DROUT
A3
GND
A4
PA
DRVR
MAX2383
LO-/
SHDN
B1
GC B3
B4
DRIN
C1
IF
IN-
C2
IF
IN+
C3
RF
OUT
C4
GND
________________________________________________________________
Maxim Integrated Products
1
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.
W-CDMA Upconverter and PA Driver
with Power Control
MAX2383
ABSOLUTE MAXIMUM RATINGS
V
CC
, RF
OUT
to GND ..............................................-0.3V to +6.0V
AC Signals ................................................................+1.0V Peak
SHDN,
LO_EN, V
GC
to GND ......................-0.3V to (V
CC
+ 0.3V)
Digital Input Current ....................................................... ±10mA
Continuous Power Dissipation (T
A
= +70°C)
12-Pin UCSP (derate 80mW/°C above +70°C) ........ 628mW
Operating Temperature Range ..........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range ............................-65°C to +160°C
Lead Temperature (Bump Reflow) ..................................+235°C
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
(V
CC
= +2.7V to +3.0V,
SHDN
= +1.5V, T
A
= -40°C to +85°C. Typical values are at V
CC
= +2.85V, T
A
= +25°C, unless otherwise
noted.)
PARAMETER
Supply Voltage
Operating Supply Current
Shutdown Supply Current
LO Buffer Current
Digital Input Logic High
Digital Input Logic Low
Input Logic High Current
Input Logic Low Current
Recommended Gain-Control
Voltage
Gain-Control Input Bias Current
SYMBOL
V
CC
I
CC
I
CC
I
CC
V
IH
V
IL
I
IH
I
IL
V
GC
I
GC
0.5V
≤
V
GC
≤
2.0V
-1
0.5
-5
2.0
5
P
DROUT
= +6dBm, V
GC
= 2.0V
P
IF
≤
-35dBm, V
GC
= 1.4V
SHDN
= 0.5V, LO_EN = 0.5V, V
GC
= 0.5V
SHDN
= 0.5V, LO_EN = 1.5V, V
GC
= 2V
1.5
0
CONDITIONS
MIN
2.7
TYP
2.85
34
12
0.5
6
MAX
3.0
44
20
10
8
V
CC
0.5
1
UNITS
V
mA
µA
mA
V
V
µA
µA
V
µA
AC ELECTRICAL CHARACTERISTICS
(MAX2383 EV Kit; V
CC
= +2.7V to +3.0V;
SHDN
= LO_EN = +1.5V; IF source impedance = 400Ω (differential), IF input level =
-16dBm (differential); LO input level = -10dBm, differential LO drive from 150Ω source impedance; mixer upconverter and PA driver
are cascaded directly through an interstage matching network; DROUT drives a 50Ω load impedance; V
GC
= 2.0V; f
IF
= 380MHz,
f
RF
= 1920MHz to 1980MHz, f
LO
= 2300MHz to 2360MHz; T
A
= -40°C to +85°C. Typical values are at V
CC
= +2.85V, T
A
= +25°C,
unless otherwise noted.) (Note 1)
PARAMETER
IF Frequency
RF Frequency Range
LO Frequency Range
Output Power (meets ACPR
specifications)
Power Gain
SYMBOL
f
IF
f
RF
f
LO
P
DROUT
G
P
(Note 2)
(Note 2)
High-side LO case (Note 2)
V
GC
= 2.0V
V
GC
= 2.0V
3σ limit
6σ limit
4.4
3.8
17
1920
2270–2580
+6
+6
19.5
CONDITIONS
MIN
TYP
200–600
1980
MAX
UNITS
MHz
MHz
MHz
dBm
dB
CASCADED PERFORMANCE (measured from IF input to DROUT (PA driver output))
2
_______________________________________________________________________________________
W-CDMA Upconverter and PA Driver
with Power Control
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2383 EV Kit; V
CC
= +2.7V to +3.0V;
SHDN
= LO_EN = +1.5V; IF source impedance = 400Ω (differential), IF input level =
-16dBm (differential); LO input level = -10dBm, differential LO drive from 150Ω source impedance; mixer upconverter and PA driver
are cascaded directly through an interstage matching network; DROUT drives a 50Ω load impedance; V
GC
= 2.0V; f
IF
= 380MHz,
f
RF
= 1920MHz to 1980MHz, f
LO
= 2300MHz to 2360MHz; T
A
= -40°C to +85°C. Typical values are at V
CC
= +2.85V, T
A
= +25°C,
unless otherwise noted.) (Note 1)
PARAMETER
Gain-Control Range
Adjacent Channel Power Ratio
Alternate Channel Power Ratio
Out-of-Band Noise Power in
RX Band
TX In-Band Noise Power
TX In-Band Noise Power
Recommended LO Input Level
P
LO
ACPR1
ACPR2
SYMBOL
CONDITIONS
V
GC
= 0.5V to 2.0V, P
IF
≤
-35dBm
V
GC
= 2.0V (5MHz offset / 3.84MHz BW)
V
GC
= 2.0V (10MHz offset / 3.84MHz BW)
V
GC
= 2.0V, P
DROUT
= +6dBm
(TX: 1980MHz; RX: 2110MHz)
V
GC
= 2.0V, P
DROUT
= +6dBm
V
GC
= 0.5V, P
DROUT
= -35dBm
Differential
-13
-144
-139
-147
-10
-7
MIN
25
TYP
35
-46
-56
-140
-135
MAX
UNITS
dB
dBc
dBc
dBm/
Hz
dBm/
Hz
dBm/
Hz
dBm
MAX2383
Note 1:
Minimum and maximum values are guaranteed by design and characterization over temperature and supply voltages.
Note 2:
Operation outside this frequency range is possible, but has not been verified.
Typical Operating Characteristics
(MAX2383 EV Kit; V
CC
= +2.85V;
SHDN
= LO_EN = V
CC
, V
GC
= 2.0V; IF source impedance = 400Ω (differential), IF input level =
-16dBm (differential); LO input level = -10dBm, differential LO drive from 150Ω source impedance; mixer upconverter and PA driver
are cascaded through an interstage matching network; DROUT drives a 50Ω load impedance; f
IF
= 380MHz, f
RF
= 1950 MHz, f
LO
=
2330MHz; T
A
= +25°C.)
TOTAL SUPPLY CURRENT
vs. GAIN-CONTROL VOLTAGE
MAX2383 toc01
TOTAL SUPPLY CURRENT
vs. TEMPERATURE
MAX2383 toc02
CONVERSION POWER GAIN
vs. GAIN-CONTROL VOLTAGE
20
CONVERSION POWER GAIN (dB)
15
10
5
0
-5
-10
-15
-20
-25
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
MAX2383 toc03
37
34
TOTAL SUPPLY CURRENT (mA)
31
28
25
22
19
16
13
10
0
0.5
1.0
1.5
2.0
T
A
= -40°C
T
A
= +85°C
T
A
= +25°C
40
35
TOTAL SUPPLY CURRENT (mA)
30
SHDN = HIGH, LO_EN = HIGH
25
20
15
10
5
0
SHDN = LOW, LO_EN = HIGH
25
2.5
-40
-15
10
35
60
85
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
V
GC
(V)
V
GC
(V)
TEMPERATURE (°C)
_______________________________________________________________________________________
3
W-CDMA Upconverter and PA Driver
with Power Control
MAX2383
Typical Operating Characteristics (continued)
(MAX2383 EV Kit; V
CC
= +2.85V;
SHDN
= LO_EN = V
CC
, V
GC
= 2.0V; IF source impedance = 400Ω (differential), IF input level =
-16dBm (differential); LO input level = -10dBm, differential LO drive from 150Ω source impedance; mixer upconverter and PA driver
are cascaded through an interstage matching network; DROUT drives a 50Ω load impedance; f
IF
= 380MHz, f
RF
= 1950 MHz, f
LO
=
2330MHz; T
A
= +25°C.)
CONVERSION POWER GAIN
vs. RF FREQUENCY
MAX2383 toc04
CONVERSION POWER GAIN
vs. LO INPUT LEVEL
MAX2383 toc05
P
DROUT
vs. TEMPERATURE
ACPR = -46dBc
6.5
6.0
5.5
5.0
4.5
4.0
-40
-15
10
35
60
85
TEMPERATURE (°C)
ACPR = -49dBc
MAX2383 toc06
21.0
CONVERSION POWER GAIN (dB)
20.5
20.0
19.5
19.0
18.5
18.0
1920
21.0
CONVERSION POWER GAIN (dB)
20.5
20.0
19.5
19.0
18.5
18.0
7.0
1930
1940
1950
1960
1970
1980
-13
-12
-11
-10
P
LOIN
(dBm)
-9
-8
-7
RF FREQUENCY (MHz)
P
DROUT
(dBm)
ACPR1 AND ACPR2 vs. P
DROUT
MAX2383 toc07
RX BAND NOISE POWER vs. TEMPERATURE
MAX2383 toc08
INBAND NOISE POWER vs.
GAIN-CONTROL VOLTAGE
MAX2383 toc09
-30
-35
ACPR AND ACPR2 (dBc)
-40
-45
-50
-55
-60
-65
-70
-75
-5
-3
-1
1
3
5
7
9
ACPR1 AT V
GC
= 1.5V
ACPR2 AT V
GC
= 1.7V
ACPR2 AT V
GC
= 2V
ACPR1 AT V
GC
= 2V
ACPR1 AT V
GC
= 1.7V
-144
-145
NOISE POWER (dBm/Hz)
-146
-147
-148
-149
-150
TX: 1980MHz,
NOISE MEASURED AT 2110MHz
P
DROUT
= +6dBm
-136
-138
NOISE POWER (dBm/Hz)
-140
-142
-144
-146
-148
-150
TX : 1980MHz,
NOISE MEASURED AT 1960MHz
0
0.5
1.0
V
GC
(V)
1.5
11
-40
-15
10
35
60
85
2.0
P
DROUT
(dBm)
TEMPERATURE (°C)
LO LEAKAGE vs. GAIN-CONTROL VOLTAGE
MAX2383 toc10
IMAGE SUPPRESSION vs. RF FREQUENCY
-22
IMAGE SUPPRESSION (dBc)
-24
-26
-28
-30
-32
-34
-36
MAX2383 toc11
OUTPUT RETURN LOSS vs. RF FREQUENCY
MAX2383 toc12
-20
-25
LO LEAKAGE (dBm)
-30
-35
P
LO
= -7dBm
-40
-45
-50
0.5
1.0
V
GC
(V)
1.5
P
LO
= -10dBm
-20
-8
-10
V
GC
= 1.4V
-12
-14
-16
-18
-20
1920
V
GC
= 1.7V
V
GC
= 2V
2.0
OUTPUT RETURN LOSS (dB)
1920
1930
1940
1950
1960
1970
1980
1930
1940
1950
1960
1970
1980
RF FREQUENCY (MHz)
RF FREQUENCY (MHz)
4
_______________________________________________________________________________________
W-CDMA Upconverter and PA Driver
with Power Control
Pin Description
PIN
A1+
A2
A3
A4
B1
B3
B4
C1
C2
C3
C4
NAME
LO_EN
/LO+
V
CC
DROUT
GND
SHDN/
LO-
GC
DRIN
IF
IN-
IF
IN+
RF
OUT
GND
FUNCTION
LO Buffer Enable Pin. When LOW, the LO buffer shuts off. Also noninverting input for LO port. It can be AC-
coupled to GND, when the LO is driven single-ended.
Power-Supply Pin. Bypass with a 330pF capacitor to GND as close to the pin as possible.
PA Driver Output Pin. Externally matched to 50Ω.
Ground Reference for RF
Shutdown Pin. When LOW, the entire part shuts off, except for LO buffer. Also inverting input for LO port. It
can be AC-coupled to GND, when the LO is driven single-ended.
Power Control Input Pin (0.5V to 2.0V for control voltage)
PA Driver Input Pin (interstage node). Can be externally matched to 50Ω.
Inverting IF Input (400Ω differential nominal impedance between IF
IN+
and IF
IN-
)
Noninverting IF Input (400Ω differential nominal impedance between IF
IN+
and IF
IN-
)
Upconverter Output Port (interstage node). Can be externally matched to 50Ω.
Ground Reference for RF
MAX2383
Detailed Description
Variable-Gain Mixer
The MAX2383 contains a double-balanced Gilbert cell
mixer merged with a gain-control circuit, followed by a
mixer buffer. The mixer is driven differentially at its IF
ports. The LO input for the mixer is conditioned through
a low-noise, inductively loaded buffer. The mixer differ-
ential output is driven through an on-chip balun into a
single-ended common emitter amplifier, which drives
the output pin (RF
OUT
). The mixer buffer is a single-
ended in/out common emitter stage with inductive
degeneration and an external inductive load.
Additionally, these circuits are biased from “VCS” gen-
erators, designed to produce a low-noise constant
degeneration voltage at the user’s current source.
These bias circuits also provide the control required to
selectively power-down the circuit and also provide for
gain control and current throttle-back.
turn off the whole IC when both pins are pulled LOW.
LO_EN helps reduce VCO pulling in gated-transmission
mode by providing means to keep the LO buffer on
while the upconverter and driver turn on and off. To
avoid loading of the LO buffer, connect a 10kΩ isolation
resistor between the LO_EN/LO+ pin and the LO_EN
logic input, and a 10kΩ isolation resistor between the
SHDN/LO-
pin and the
SHDN
logic input.
Differential IF Inputs
The MAX2383 has a differential IF input port for inter-
facing to differential IF filters. The IF pins should be AC-
coupled to the IF ports. The typical IF frequency is
380MHz, but the device can operate from 200MHz to
600MHz. The differential impedance between the two IF
inputs is approximately 400Ω in parallel with 1.0pF.
Interstage Matching
The mixer buffer drives the following PA driver through
an interstage matching network connected between the
mixer’s RF
OUT
pin and the PA driver’s input pin (DRIN).
This off-chip matching network, which consists of two
series inductors and a parallel capacitor, is designed to
achieve better than 25dBc image suppression with no
current consumption penalty. The quality factor of this
off-chip resonant circuit determines the image suppres-
sion level and usable bandwidth from the point of view
of passband gain flatness.
PA Driver
The PA buffer is a single-ended in/out common emitter
stage with inductive degeneration and an external
inductive load.
Applications Information
LO Buffer Inputs
The external LO is interfaced either differentially or sin-
gle-ended to the differential LO buffer. Those two pins
also function as the control inputs for the device.
Hence, they are DC-coupled to the chip-control circuit-
ry, and AC-coupled to the LO port.
SHDN
and LO_EN
PA Driver Output
The PA driver output, DROUT, is an open-collector out-
put that requires an external inductor to V
CC
for proper
biasing. The output matching components are chosen
5
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