MAX2538ETI+T Maxim Integrated Products, MAX2538ETI+T Datasheet - Page 9

• Manufacturer Part Number: MAX2538ETI+T
• Description: RF Mixer IC LNA/MIXER CELL/PCS/GPS
• Manufacturer: Maxim Integrated Products

Specifications of MAX2538ETI+T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX2351/MAX2354/MAX2358/MAX2359/MAX2530/
MAX2531/MAX2537/MAX2538 have multiple RF signal
paths. The cellular signal path has five modes of opera-
tion using a 4-gain-mode LNA and a 3-gain-mode mixer.
Similarly, the PCS signal path has four modes of opera-
tion made up of a 2-gain-mode LNA and a 3-gain-mode
mixer. The cellular and PCS mixer’s IF output can be
routed to either the IF0 or IF1 port. The GPS signal path
consists of a single-mode GPS, LNA, and mixer, which
has a dedicated IF output port. Tables 1 and 2 summa-
rize the modes of operation.
MAX2351
MAX2358
18, 19
22, 23
EP
16
17
24
25
26
27
28
—
Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
MAX2354 MAX2359
Signal Paths and Operation Modes
18, 19
22, 23
16
17
24
26
EP
—
—
—
—
_______________________________________________________________________________________
18, 19
22, 23
Detailed Description
PIN
16
17
25
26
28
EP
—
—
—
MAX2530
MAX2531
MAX2538
18, 19
20, 21
22, 23
16
17
24
25
26
27
28
EP
MAX2537
18, 19
20, 21
22, 23
EP
16
17
24
26
27
—
—
PLNA_OUT
GIF+, GIF-
IF0+, IF0-
IF1+, IF1-
LO_OUT
CMIX_IN
Exposed
PMIX_IN
IF_SEL
NAME
BAND
V
CC
The MAX2351/MAX2358/MAX2530/MAX2531/MAX2538
incorporate three LNA signal paths for the cellular,
PCS, and GPS bands. Using Maxim’s latest advanced
BiCMOS SiGe process, these LNAs deliver 1dB noise
figure for cellular, PCS, and GPS bands. The cellular
band LNAs have four modes of operation: high gain/
high linearity (HGHL), high gain/low linearity (HGLL),
midgain (MG), and low gain (LG). The PCS band LNAs
have two modes of operation: high gain/high linearity
and low gain. The GPS LNA has only one mode.
The BAND input selects the frequency band. The G1,
G2, and MODE pins are logic inputs that control the
LNA modes (see Table 2). Use HGHL mode when high
PCS and Cellular LO Output. Output frequency is equal to
mixer LO frequency. Internally matched with DC-blocking
capacitor. If not used, connect pin to ground or leave open.
2.7V to 3.3V Supply Pin. Connect a 100pF bypass capacitor
as close as possible to the pin.
Differential IF Output Port 0. Requires a pullup inductor and a
DC-blocking capacitor at each pin, which can be used as part
of the matching network. If not used, connect pins to V
GPS IF Output. Requires a pullup inductor and a DC-blocking
capacitor at each pin, which can be used as part of the
matching network. If not used, connect pins to V
Differential IF Output Port 1. Requires a pullup inductor and a
DC-blocking capacitor at each pin, which can be used as part
of the matching network. If not used, connect pins to V
Cellular Mixer Input. Internally matched to 50Ω, including an
on-chip DC-blocking capacitor.
PCS Mixer Input. Internally matched to 50Ω. Requires a DC-
blocking capacitor.
IF Select Logic Input. Logic low selects IF0 port, and logic
high selects IF1 port.
BAND Logic Input. See Table 2 for details.
PCS LNA Output. Requires a pullup inductor and a DC-
blocking capacitor, which can be used as part of the
matching network.
Exposed Pad. RF and DC ground.
Pin Description (continued)
FUNCTION
Low-Noise Amplifiers
CC
.
CC
CC
.
.
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