參數(shù)資料
型號(hào)： SA1921
廠商： NXP SEMICONDUCTORS
元件分類： 無(wú)繩電話/電話
英文描述： Ceramic Multilayer Capacitor; Capacitance:100000pF; Capacitance Tolerance:+/- 5 %; Working Voltage, DC:50V; Dielectric Characteristic:X7R; Package/Case:0805; Series:VJ; Leaded Process Compatible:Yes; Mounting Type:Surface Mount
中文描述： TELECOM, CELLULAR, RF FRONT END CIRCUIT, PQFP48
封裝： 7 X 7 X 1.40 MM, PLASTIC, QFP-48
文件頁(yè)數(shù)： 2/36頁(yè)
文件大小： 507K
代理商： SA1921
Philips Semiconductors
Product specification
SA1921
Satellite and cellular dual-band RF front-end
2
1999 Mar 02
853–2121 20917
DESCRIPTION
The SA1921 is an integrated dual-band RF front-end that operates
at both cellular (AMPS, DAMPS, and GSM) and satellite
(1515–1600 MHz) frequencies, and is designed in a 13 GHz f
T
BiCMOS process—QUBiC1. The low-band is a combined low-noise
amplifier (LNA) and mixer. The LNA has a 1.7 dB noise figure at 943
MHz with 18.3 dB of gain and an IIP3 of –5 dBm. The wide-dynamic
range mixer has a 11 dB noise figure at 943 MHz with 7.2 dB of gain
and an IIP3 of +5 dBm.
The high-band contains a receiver front-end, and a high frequency
transmit mixer intended for closed loop transmitters. One advantage
of the high-band architecture is an image-rejection mixer with over
30 dB of image rejection; thus, eliminating external filter cost while
saving board space. The system noise figure is 3.9 dB at 1550 MHz
with a power gain of 22.2 dB and an IIP3 of –11.5 dB.
FEATURES
Low current consumption
Outstanding low- and high-band noise figure
Excellent gain stability versus temperature and supply
Image reject high-band mixer with over 30 dB of rejection
Increased low-band LNA gain compression during analog
transmission
LO input and output buffers
On chip logic for network selection and power down
Very small outline package
APPLICATIONS
800 to 1000 MHz analog and digital receivers
1515 to 1600 MHz digital receivers
Portable radios
Digital mobile communications equipment
PIN CONFIGURATION
GND
SR01732
21
22
23
24
25
26
27
28
29
30
31
37
38
39
40
41
42
43
1
2
3
4
5
6
18
19
20
7
8
9
10
11
12
44
45
46
47
48
32
33
34
35
36
15
16
17
13
14
T
V
H
H
G
G
L
G
H
N
G
N
G
M
G
T
N
Rx ON
LOW BAND LO A
LOW BAND LO A
HIGH BAND LO B
HIGH BAND LO A
GND
LOW BAND IF B
LOW BAND IF A
HIGH BAND IF B
HIGH BAND IF A
SYN ON
HI/LO
N/C
GND
STRONG SIGNAL
GND
HIGH BAND LNA IN
LOW BAND LNA IN
GND
LOW BAND LNA OUT
N/C
C
VC
VCC
GND
T
G
T
T
G
VC
Figure 1.
Pin Configuration
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
LQFP48
DESCRIPTION
VERSION
SOT313-2
SA1921
Plastic low profile quad flat package; 48 leads; body 7x7x1.4 mm
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