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PDF MAX2530 Data sheet ( Hoja de datos )
| Número de pieza | MAX2530 | |
| Descripción | Quadruple-Mode PCS/Cellular/GPS LNA/Mixers | |
| Fabricantes | Maxim Integrated | |
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19-2487; Rev 3; 1/04
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
General Description
The MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/
MAX2531/MAX2537/MAX2538 family of single- and multi-
band LNA/mixer ICs is optimized for CDMA, GSM, and
TDMA applications in both cellular and PCS bands. In
addition, the MAX2530/MAX2531/MAX2537/MAX2538 ICs
feature a GPS LNA/mixer signal path for E911 and traveler
assistance applications. The cellular and PCS signals can
be routed to either IF port. For example, one IF port can be
connected to an IF filter with 30kHz bandwidth, while the
other port can drive an IF filter with a wider bandwidth. The
GPS band has its own IF port.
To optimize dynamic range at minimum current, the
MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/
MAX2531/MAX2537/MAX2538 implement multiple LNA
and mixer states, including high gain/high linearity, high
gain/low linearity, midgain, low gain, and ultra-low gain. In
high-gain/high-linearity mode, the high-IP3 LNA mini-
mizes desensitization in the presence of a large interfer-
ing signal. For the other gain states, the LNA current is
reduced to improve standby time. Each band is imple-
mented with a separate mixer to optimize performance for
the specific band, and each mixer provides multiple lin-
earity modes to optimize linearity and current consump-
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tion. The ultra-low gain mode operates with very little
current, which results in significant power savings
because the handset typically spends most of its time in
this mode.
Applications
Triple-Band, Quadruple-Mode PCS/Cellular Handsets
Single-Band Handsets
E911 and Traveler Assistance Through GPS
GSM/TDMA Cellular Phones
Selector Guide
PART CELL PCS GPS CELL VCO
PCS VCO
MAX2351 ✓ ✓ —
Input
Internal doubler
MAX2354 ✓ — —
Input
—
MAX2358 ✓ ✓ — Internal divider
Input
MAX2359 — ✓ —
—
Input
MAX2530 ✓ ✓ ✓
Input
Input
MAX2531 ✓ ✓ ✓
Input
Internal doubler
MAX2537 ✓ — ✓ Internal divider
Input
MAX2538 ✓ ✓ ✓ Internal divider
Input
Features
♦ Eliminate Up to 35 External Components
♦ Low LNA Noise Figure
PCS: 1.2dB
Cellular: 0.9dB
GPS: 1.0dB
♦ No External GPS VCO Required
♦ No Interstage GPS SAW Filter Required
♦ Triple Band, Quadruple Mode
♦ Ultra-Low Current: <10mA Average in CDMA
Phones
♦ Small 28-Pin QFN Package (5mm ✕ 5mm)
Ordering Information
PART
TEMP RANGE
MAX2351ETI
-40°C to +85°C
MAX2354ETI
-40°C to +85°C
MAX2358ETI
-40°C to +85°C
MAX2359ETI
-40°C to +85°C
MAX2530ETI
-40°C to +85°C
MAX2531ETI
-40°C to +85°C
MAX2537ETI
-40°C to +85°C
MAX2538ETI
-40°C to +85°C
*EP = exposed pad.
PIN-PACKAGE
28 Thin QFN-EP*
28 Thin QFN-EP*
28 Thin QFN-EP*
28 Thin QFN-EP*
28 Thin QFN-EP*
28 Thin QFN-EP*
28 Thin QFN-EP*
28 Thin QFN-EP*
Pin Configurations
28
CLNA_OUT 1
27
26 25 24
23 22
21 GIF-
PLNA_IN 2
20 GIF+
GND 3
CLNA_IN 4
MAX2538
19 IFO-
18 IFO+
SHDN 5
17 VCC
GLNA_IN 6
÷2 16 LO_OUT
G1 7
÷1.5
15 BUFFEN
8
9
10 11 12
13 14
Pin Configurations continued at end of data sheet.
________________________________________________________________ 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.
1 page  
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
AC ELECTRICAL CHARACTERISTICS (continued)
(EV kits to evaluate the MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/MAX2531/MAX2357/MAX2538, fCELL = 869MHz to
894MHz, fPCS = 1930MHz to 1990MHz, fGPS = 1575.42MHz (MAX2530/MAX2531/MAX2537/MAX2538), fIF = 183.6MHz, high-side
LO for all except GPS, 50Ω system impedance, VCC = 2.7V to 3.3V, RBIAS = 20kΩ, RIF0 = RIF1 = 3.3kΩ, RGIF = 8.2kΩ, LO input
power = -10dBm, TA = -40°C to +85°C. Typical values are at fCELL = 881MHz, fPCS = 1960MHz, VCC = 2.75V, LO input power = -
7dBm, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIXER PERFORMANCE (see Tables 1 and 2 for abbreviations)
Mixer Gain
(Note 1)
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CELL
HGHL/
MG
HGLL/
LG
ULG
HGHL
PCS LG
ULG
GPS
CELL
HGHL/
MG
HGLL/
LG
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
TA = -40°C to +85°C
TA = +25°C
Change over temperature from
TA = +25°C to +85°C
TA = +25°C
Mixer Noise
Figure
ULG
HGHL
PCS
LG
ULG
GPS
TA = +25°C
TA = +25°C
Change over temperature from
TA = +25°C to +85°C
TA = +25°C
TA = +25°C
TA = +25°C
Change over temperature from
TA = +25°C to +85°C
MIN TYP MAX UNITS
9.5
8.5
9.0
8
6
5
10.0
8.5
8.0
6.5
7.5
6.0
12.0
10
12.5
12
10
13
12
12
11
15
13
8
0.3
15.0
16
14.5
15.5
12.5
14
16.5
16.5
14.5
14.5
13.5
14.5
17.5
19
9.5
7.2 9
79
7 8.5
0.3
6.2 7.5
6 7.5
7.2 9
0.5
dB
dB
_______________________________________________________________________________________ 5
5 Page 
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Table 2. Modes of Operation
BAND
OPERATION MODE
LNA
MIXER
IF PORT
G2
G1 MODE BAND
HGHL
HGHL
HL
IF0 or IF1
0
0
1
0
HGLL
HGLL
LL
IF0 or IF1
0
0
0
0
Cellular
MG
MG
HL
IF0 or IF1
0
1
X
0
LG
LG
LL
IF0 or IF1
1
1
X
0
ULG
LG
LG
IF0 or IF1
1
0
X
0
HGHL
HGHL
HL
IF0 or IF1
0
0
1
1
PCS LG
LG
LL
IF0 or IF1
1
1
X
1
ULG
LG
LG
IF0 or IF1
1
0
X
1
GPS*
GPS
GPS
GPS
GIF
0001
*MAX2530/MAX2531/MAX2537/MAX2538 only.
X = Don’t care.
Table 3. LO Frequency Plan
PART
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MAX2351
MAX2354
MAX2358
MAX2359
MAX2530
MAX2531
MAX2537
MAX2538
VCO FREQUENCY
Cell Band VCO
Cell Band VCO
PCS Band VCO
PCS Band VCO
Cell and PCS Dual-Band VCO
Cell Band VCO
PCS Band VCO
PCS Band VCO
CELLULAR LO
FREQUENCY
fVCO
fVCO
0.5 x fVCO
—
fVCO
fVCO
0.5 x fVCO
0.5 x fVCO
PCS LO FREQUENCY
2 x fVCO
—
fVCO
fVCO
fVCO
2 x fVCO
—
fVCO
GPS LO
FREQUENCY
—
—
—
—
(2/3) fVCO
(4/3) fVCO
(2/3) fVCO
(2/3) fVCO
GPS Interstage
The GPS LNA and mixer include on-chip resonant tanks
that can be used instead of a saw filter for image sup-
pression. These tanks are coupled by an external L-C
network between pins 8 and 10 as shown in the Typical
Application Circuit.
Layout Considerations
Keep RF signal lines as short as possible to minimize
losses and radiation. Use controlled impedance on all
high-frequency traces. Use high-Q (>40) components
for the LNA input-matching circuit to achieve the lowest
possible noise figure. At the mixer outputs, keep the
differential signal lines together and of equal length to
ensure signal balance. For proper operation, solder the
exposed paddle evenly to the ground plane. Use abun-
dant ground vias between RF traces to minimize unde-
sired coupling.
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet MAX2530.PDF ] | |
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