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MAX2321 Schematic ( PDF Datasheet ) - Maxim Integrated
| Teilenummer | MAX2321 |
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| Beschreibung | Adjustable / High-Linearity / SiGe Dual-Band LNA/Mixer ICs | |
| Hersteller | Maxim Integrated | |
| Logo |  |
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Gesamt 28 Seiten 
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.
 
Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX232_ EV kit, VCC = +2.75V, fLNAINH = fMIXINH = 1960MHz, fLNAINL = fMIXINL = 881MHz, fLOLIN = 1091MHz (digital mode), fLOLIN =
991MHz (FM mode), fLOHIN = 1750MHz (MAX2320, MAX2322 with LOX2 = low, MAX2326 with BAND = low, MAX2327), fLLOHIN =
1085MHz (MAX2321 with BAND = low, MAX2322 with LOX2 = high), fLOHIN = 1091MHz (MAX2321 with BAND = high), fLOHIN =
2182MHz (MAX2326 with BAND = high), LO input power = -7dBm (MAX2320/MAX2326), 50Ω system, TA = +25°C, unless otherwise
noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
HIGH-GAIN, LOW-LINEARITY, AND LOW-GAIN MODES (Note 1)
Gain (Note 4)
PCS
G
Without doubler
With doubler
Cellular Band
MIN -3σ TYP +3σ MAX UNITS
10.6
10.2
11.2
11.3
10.8
12.1
12
11.5
13
12.1
12.4
13.8
12.8
13.1
14.7
dB
Gain Variation Over
Temperature Relative
to +25°C
TA = -40°C to
+85°C
PCS
Cellular
±1 ±1
dB
±1 ±1
Noise Figure
PCS
NF
Without doubler
With doubler
(Note 7)
Cellular
Without divider
With divider
Input Third-Order
Intercept
PCS
IIP3
Cellular
Without doubler
With doubler
FM MODE (Note 1)
Gain (Note 4)
Noise Figure
G TA = +25°C
TA = -40°C to +85°C
NF
Input Third-Order
Intercept (Notes 5, 6)
IIP3 TA = -40°C to +85°C
LO BUFFER PERFORMANCE (BUFFEN = HIGH)
LO Output Level
Load = 100Ω pullup resistor
BUFFEN = GND
7.2 7.5 7.6
10.5 12
13.4
dB
7 7.2 7.6
7.5 7.7 8.1
+1
+2.2
dBm
+1.0
9.7 10.4 11.2 11.9 12.7
7.8 9.0 11.2 14.0 15.4
10.6 11.1 11.5
dB
dB
2.3 3.2 4.9
dBm
-12
dBm
-44
LO_OUT Even Harmonic
Distortion
-31 dBc
LO Emissions at LNA
Input Port
Interstage filter rejection = 20dB
-50 dBm
Note 1: See Tables 1–5 for operational mode selection.
Note 2: A total of 36 devices from 3 different wafer lots are used to determine the standard deviation. The lots were selected to rep-
resent worst-case process conditions.
Note 3: Operation is characterized for the frequencies specified in the conditions; for other frequencies in the band, see Tables 8–12
for LNA and mixer S parameters.
Note 4: Guaranteed by design, characterization, and production functional test.
Note 5: Guaranteed by design and characterization.
Note 6: For cellular band, RF inputs are -25dBm each tone at 881MHz and 882MHz, fLO = 1091MHz. For PCS band, RF inputs are
-25dBm each tone at 1960MHz and 1961MHz, fLO = 2170MHz. For IIP3 vs. ICC trade-off, see Typical Operating
Characteristics.
6 _______________________________________________________________________________________
6 Page 
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, 50Ω system, all measurements include matching component
losses but not connector and trace losses, TA = +25°C, unless otherwise noted.)
PCS-BAND HGHL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
14
PCS-BAND HGLL MIXER NOISE
FIGURE vs. LO INPUT LEVEL
14
CELLULAR-BAND LO BUFFER
OUTPUT LEVEL vs. INPUT LEVEL
0
12
10 HIGH SIDE LO
8
12
10 HIGH SIDE LO
8
-5
-10
6 LOW SIDE LO
4
2
6 LOW SIDE LO
4
2
-15
TA = -45°C TO +85°C HIGH SIDE
-20 AND LOW SIDE LO
0
-17
-12 -7
-2
LO INPUT LEVEL (dBm)
3
0
-17
-12 -7
-2
LO INPUT LEVEL (dBm)
3
-25
-20
-10 0
LO INPUT LEVEL (dBm)
10
CELLULAR-BAND 2ND AND 3RD
HARMONICS vs. LO INPUT POWER
0
fLO = 1091MHz
-10
3RD HARMONIC
-20
-30
PCS-BAND LO BUFFER
OUTPUT LEVEL vs. INPUT LEVEL
0
-5
-10
-40
2ND HARMONIC
-50
-60
-15 TA = -45°C TO +85°C
HIGH SIDE AND LOW
SIDE LO
-20
-70
-20
-10 0
LO INPUT LEVEL (dB)
10
-25
-20
-10 0
LO INPUT LEVEL (dBm)
10
PCS-BAND 2ND AND 3RD HARMONICS
LO BUFFER OUTPUT vs. INPUT LEVEL
0 fLO = 1750MHz
-10
PCS-BAND MIXER
2 x 2 SPURIOUS REJECTION
-55
-57
-59
-20 -61 HGLL, WITHOUT LO DOUBLER
-30 2ND HARMONIC
-40
-50 3RD HARMONIC
-60
-63
-65
-67
-69 HGHL, WITHOUT LO DOUBLER
-71
-73
-70
-20 -10 0 10
-75
80
90 100 110 120
LO INPUT LEVEL (dB)
IF OUTPUT FREQUENCY (MHz)
12 ______________________________________________________________________________________
12 Page | ||
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| PDF Download | [ MAX2321 Schematic.PDF ] | |
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