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PDF ( 数据手册 , 数据表 ) MAX2326

零件编号 MAX2326
描述 Adjustable / High-Linearity / SiGe Dual-Band LNA/Mixer ICs
制造商 Maxim Integrated
LOGO Maxim Integrated LOGO 


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MAX2326 数据手册, 描述, 功能
19-1535; Rev 1; 6/00
EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
General Description
The MAX2320/MAX2321/MAX2322/MAX2324/MAX2326/
MAX2327 high-performance silicon germanium (SiGe)
receiver front-end ICs set a new industry standard for
low noise and high linearity at a low supply current. This
family integrates a variety of unique features such as an
LO frequency doubler and divider, dual low-noise
amplifier (LNA) gain settings, and a low-current paging
mode that extends the handset standby time.
The MAX2320 family includes six ICs: four operate at
both cellular and PCS frequencies, one operates at cel-
lular frequencies, and one at PCS frequencies (see
Selector Guide). Each part includes an LNA with a high
input third-order intercept point (IIP3) to minimize inter-
modulation and cross-modulation in the presence of
large interfering signals. In low-gain mode, the LNA is
bypassed to provide higher cascaded IIP3 at a lower
current. For paging, a low-current, high-gain mode is
provided.
The CDMA mixers in cellular and PCS bands have high
linearity, low noise, and differential IF outputs. The FM
mixer is designed for lower current and a single-ended
output.
All devices come in a 20-pin TSSOP-EP package with
exposed paddle (EP) and are specified for the extend-
ed temperature range (-40°C to +85°C).
Features
o Ultra-High Linearity at Ultra-Low Current and
Noise
o +2.7V to +3.6V Operation
o Pin-Selectable Low-Gain Mode Reduces Gain by
17dB and Current by 3mA
o Pin-Selectable Paging Mode Reduces Current
Draw by 6mA when Transmitter Is Not in Use
o LO Output Buffers
o LO Frequency Doubler (MAX2321)
o LO Frequency Divider (MAX2326)
o 0.1µA Shutdown Current
o 20-Pin TSSOP-EP Package
PART
MAX2320EUP
MAX2321EUP
MAX2322EUP
MAX2324EUP
MAX2326EUP
MAX2327EUP
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 TSSOP-EP
20 TSSOP-EP
20 TSSOP-EP
20 TSSOP-EP
20 TSSOP-EP
20 TSSOP-EP
Applications
CDMA/TDMA/PDC/WCDMA/GSM Cellular Phones
Single/Dual/Triple-Mode Phones
Wireless Local Loop (WLL)
Selector Guide
PART
MAX2320
MAX2321
MAX2322
MAX2324
MAX2326
MAX2327
DESCRIPTION
Dual-band, dual VCO inputs, and dual IF outputs
MAX2320 with LO doubler
PCS band, single mode with optional frequency
doubler
Cellular band, dual IF outputs
MAX2320 with LO divider
Dual-band, dual VCO inputs, and separately
controlled VCO buffers
Typical Application Circuits appear at end of data sheet.
Pin Configurations
TOP VIEW
LNAOUTH 1
LNAOUTL 2
RLNA 3
LNAINH 4
20 TSSOP-EP
6mm x 6.3mm
LNAINL 5
BAND 6
LIN 7
GAIN 8
LOLIN 9
LOHIN 10
MAX2320
MAX2321
MAX2326
20 MIXINH
19 MIXINL
18 RBIAS
17 CDMA+
16 CDMA-
15 BUFFEN
14 VCC
13 FMOUT
12 LOLOUT
11 LOHOUT
TSSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.







MAX2326 pdf, 数据表
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
Typical Operating Characteristics (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOHIN = 1750MHz, fLOLIN = 1091MHz
(digital modes), fLOLIN = 991MHz (FM mode), LO input power = -7dBm, 50system, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
FM MIXER IF
CELLULAR-BAND HGHL LNA GAIN
PORT IMPEDANCE
vs. CURRENT
100
1.0MAX2320 toc10
17
90
CAPACITANCE
TA = -40°C
16
80 0.9
70 15
60
50
40
0.8 14
TA = +25°C
0.7 13 TA = +85°C
30 RESISTANCE
12
20 0.6
10 11
PCS-BAND HGHL LNA GAIN
vs. CURRENT
17
TA = -40°C
16
15
14 TA = +25°C
TA = +85°C
13
12
11
0 0.5
0 50 100 150 200 250 300 350 400 450
FREQUENCY (MHz)
10
4
6 8 10 12 14 16
LNA CURRENT (mA)
10
4
9
LNA CURRENT (mA)
14
PCS-BAND HGHL LNA GAIN
vs. CURRENT
16
15
14 VCC = +2.7V TO +3.6V
13
12
11
10
5
10 15
LNA CURRENT (mA)
20
CELLULAR-BAND HGHL LNA
MAXIMUM AVAILABLE GAIN
18
17
16
15
14
13
12
11
10
700 750 800 850 900 950 1000
FREQUENCY (MHz)
CELLULAR-BAND LNA GAIN
vs. FREQUENCY
16
14
HGHL
12
10 HGHL, FM
8
6
4
2
0 LGHL
-2
850
870 890
FREQUENCY (MHz)
PCS-BAND HGHL LNA
MAXIMUM AVAILABLE GAIN
18
910
17
16
15
14
13
12
1700 1800 1900 2000 2100 2200 2300 2400 2500
FREQUENCY (MHz)
PCS-BAND LNA GAIN vs. FREQUENCY
15
13
11
9
7
5
3
1
-1
-3
1900
HGHL
HGLL, FM
LGHL
1950 2000
FREQUENCY (MHz)
CELLULAR-BAND HGHL LNA IIP3
vs. CURRENT
10
9 TA = +85°C
8
7 TA = -40°C TA = +25°C
6
5
4
3
2
1
0
0 5 10 15 20
LNA CURRENT (mA)
8 _______________________________________________________________________________________







MAX2326 equivalent, schematic
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
MAX2322 Operation
The MAX2322 is a lower-cost PCS-only version that can
be installed as a drop-in replacement for the dual-band
versions. It consists of a PCS LNA, PCS mixer, pin-
selectable LO frequency doubler, and LO buffer. Logic
input SHDN = VCC / GND turns on/off the entire IC
except the LO buffer. The LOX2 logic input controls the
LO frequency doubler. LOX2 = GND disables the dou-
bler when using a PCS band VCO, and LOX2 = VCC
activates the doubler when using a cellular-band VCO.
GAIN and LIN logic inputs control the MAX2322’s three
operational modes, as summarized in Table 2.
MAX2324 Operation
The MAX2324 is a lower-cost cellular-only version that
can be installed as a drop-in replacement for the dual-
band versions. It consists of a cellular LNA, cellular dig-
ital mixer, cellular FM mixer, and LO buffer. A SHDN
logic input turns on/off the entire IC except the LO
buffer. GAIN and LIN logic inputs control the
MAX2324’s three operational modes, as summarized in
Table 3.
MAX2327 Operation
The MAX2327 is similar to the MAX2320 except it only
features an HGLL mode, and either LO output buffer is
selectable during shutdown. It consists of PCS and cel-
lular LNAs; PCS, cellular digital, and cellular FM mixers;
and PCS and cellular LO buffers. A SHDN logic input
turns on/off the entire IC except the LO buffer. BAND
and MODE logic inputs control the MAX2327’s three
operational modes, as summarized in Table 4.
Applications Information
Cascaded LNA/Mixer Performance
The LNA and mixer design aims at optimizing cascad-
ed performance in all gain and linearity modes. In high-
gain, high-linearity mode, both the LNA and mixer have
a low noise figure, high gain, and high linearity. The
LNA has high gain to minimize the noise contribution of
the mixer, thus increasing the receiver’s sensitivity and
extra-high linearity for superior cross-modulation sup-
pression. The HGLL mode is used when the transmitter
is off and cross-modulation is not a concern. In low-
gain, high-linearity mode, the received signal is strong
enough that linearity is the primary concern. The LNA
gain is reduced for higher system linearity. Tables 5
and 6 summarize the cascaded performance.
S Parameters
The S parameters are listed in Tables 7–11. An electron-
ic copy is also available at www.maxim-ic.com
/MAX2320/S_table/.
Table 2. MAX2322 Operational Modes
OPERATIONAL MODE
Not used.
Low-Gain, High-Linearity (LGHL) PCS
Mode. The LNA and mixer are in LGHL
mode.
GAIN
L
L
LIN
L
H
High-Gain, Low-Linearity (HGLL) PCS
Mode. The LNA and mixer are in HGLL
mode.
H
L
High-Gain, High-Linearity (HGHL) PCS
Mode. The LNA and mixer are in HGHL
mode.
Note: L = Logic Low; H = Logic High
H
H
Table 3. MAX2324 Operational Modes
OPERATIONAL MODE
FM Mode. The LNA is in HGLL mode.
The FM mixer and the associated LO
buffer are selected.
Low-Gain, High-Linearity (LGHL)
Cellular Mode. The LNA and digital
mixer are in LGHL mode.
High-Gain, Low-Linearity (HGLL )
Cellular Mode. The LNA and digital
mixer are in HGLL mode.
High-Gain, High-Linearity (HGHL )
Cellular Mode. The LNA and digital
mixer are in HGHL mode.
Note: L = Logic Low; H = Logic High
GAIN
L
L
H
H
LIN
L
H
L
H
Table 4. MAX2327 Operational Modes
OPERATIONAL MODE
BAND MODE
Not used.
LL
Digital PCS Mode. The LNA and mixer
are in HGLL mode.
L
H
FM Mode. The cellular FM mixer is
selected.
HL
Digital Cellular Mode. The cellular digi-
tal mixer is selected.
H
H
Note: L = Logic Low; H = Logic High
16 ______________________________________________________________________________________










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