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參數(shù)資料
| 型號： | SA1620 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Low voltage GSM front-end transceiver(低壓GSM前端收發(fā)器) |
| 中文描述： | 低電壓的GSM前端收發(fā)器（低壓手機前端收發(fā)器） |
| 文件頁數(shù)： | 2/26頁 |
| 文件大?。?/td> | 203K |
| 代理商： | SA1620 |
Philips Semiconductors
Product specification
SA1620
Low voltage GSM front-end transceiver
2
1997 May 22
853-1784 18066
DESCRIPTION
The SA1620 is a combined receive (Rx) and transmit (Tx) front-end
for GSM cellular telephones. The receive path contains two low
noise amplifiers (LNA1 and LNA2) with four switchable attenuation
steps. A Gilbert Cell mixer in the receive path down-converts the
RF signal to a first IF of 70 to 500 MHz. A second Gilbert Cell in the
transmit path transposes a GMSK or phase modulated IF to RF by
image reject mixing and has a fixed IF of 400 MHz. A buffered LO
signal is fed to Rx and Tx mixers. Rx or Tx path or the entire circuit
may be powered-down.
FEATURES
Excellent noise figure: <2dB for the LNAs at 950MHz
LNAs matched to 50
with external matching components
LNAs with gain control, 59dB dynamic range in four discrete steps
LNA gain stability
±
0.5dB within -40 to 85
°
C
Feedthrough attenuation LNA1 to Rx mixer
≥
35dB
Tx power adjustable from -3 to +12dBm by external resistor
Direct supply: 2.7V to 5.5V
Battery supply voltage V
BATT
= 3.3V to 7.5V or direct supply
Two DC regulators programmable for 3.0V, 3.4V, 3.7V or 5.1V
Low current consumption: 28mA for Rx or 59mA for Tx
Fully compatible with SA1638 GSM IF Digital I/Q circuit
APPLICATIONS
900MHz front end for GSM hand-held units
Portable radio, TDMA systems
PIN CONFIGURATION
LQFP Package
V
BATT
PON
GNDREG1
VREG1
VREGF2
VREG2
GNDREG2
CON1
LO INX
LO IN
V
CCL2
IN2
GNDL2
GNDL2A
OUT2
B
A
INM
INMX
COMP2
48–PIN LQFP
45
46
47
48
1
2
3
4
5
6
7
13 14
15 16 17 18 19
25
26
27
28
29
30
42
43
44
31
32
33
34
35
36
20
21 22 23 24
8
9
10
11
12
39
40
41
37
38
COMP1
V
CC
BM
CON2
GNDTx2
V
O
G
G
I
R
G
T
T
G
P
P
G
P
G
R
G
T
T
G
V
G
V
R
SR00127
Figure 1.
Pin Configuration
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
-40 to +85
°
C
ORDER CODE
DWG #
48-Pin Thin Quad Flat Pack (TQFP)
SA1620BE
SOT313-2
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
RATING
UNITS
V
CCXX
V
BATT
T
A
Supply voltages
2.7 to 5.5
V
Battery voltage
3.3 to 7.5
V
Operating ambient temperature range
-40 to +85
°
C
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