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| 型号： | MAX2359ETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/27页 |
| 文件大小： | 0K |
| 描述： | IC LNA/MIXER PCS 28TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | LNA/混频器 |
| 频率： | 1.93GHz ~ 1.99GHz |
| RF 型： | PCS |
| 次要属性： | 四倍频器模式 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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Quadruple-Mode PCS/Cellular/GPS LNA/Mixers
Pin Description (continued)
PIN
MAX2351
MAX2358
MAX2530
MAX2354 MAX2359 MAX2531 MAX2537
MAX2538
NAME
FUNCTION
PCS and Cellular LO Output. Output frequency is equal to
16
16
16
16
16
LO_OUT
mixer LO frequency. Internally matched with DC-blocking
capacitor. If not used, connect pin to ground or leave open.
17
17
17
17
17
V CC
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
18, 19
18, 19
18, 19
18, 19
18, 19
IF0+, IF0-
DC-blocking capacitor at each pin, which can be used as part
of the matching network. If not used, connect pins to V CC .
GPS IF Output. Requires a pullup inductor and a DC-blocking
—
—
—
20, 21
20, 21
GIF+, GIF- capacitor at each pin, which can be used as part of the
matching network. If not used, connect pins to V CC .
Differential IF Output Port 1. Requires a pullup inductor and a
22, 23
22, 23
22, 23
22, 23
22, 23
IF1+, IF1-
DC-blocking capacitor at each pin, which can be used as part
of the matching network. If not used, connect pins to V CC .
24
25
26
27
24
—
26
—
—
25
26
—
24
25
26
27
24
—
26
27
CMIX_IN
PMIX_IN
IF_SEL
BAND
Cellular Mixer Input. Internally matched to 50 ? , including an
on-chip DC-blocking capacitor.
PCS Mixer Input. Internally matched to 50 ? . 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-
28
—
28
28
—
PLNA_OUT blocking capacitor, which can be used as part of the
matching network.
EP
EP
EP
EP
EP
Exposed
Exposed Pad. RF and DC ground.
Detailed Description
Signal Paths and Operation Modes
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.
Low-Noise Amplifiers
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
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