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參數(shù)資料
| 型號： | SA621DH |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 118K |
| 代理商： | SA621DH |
Philips Semiconductors
Product specification
SA621
1GHz low voltage LNA, mixer and VCO
2
1997 Nov 07
853-1849 018660
DESCRIPTION
The SA621 is a combined low-noise amplifier, mixer and VCO
designed for high-performance low-power communication systems
from 800-1000MHz. The low-noise preamplifier has a 1.7dB noise
figure at 881MHz with 15dB gain and an IP3 intercept of -7dBm at
the input. The gain is stabilized by on-chip compensation to vary
less than
±
0.2dB over -40 to +85
°
C temperature range. The
wide-dynamic-range mixer has a 12dB noise figure and IP3 of
+4.5dBm at the input at 881MHz. The integrated VCO circuit with
external resonator produces a high quality LO signal that drives the
mixer and is buffered to an external PLL synthesizer IC. The
nominal current drawn from a single 3V supply is 13.3mA.
Additionally, the entire circuit can be powered down to further reduce
the supply current to less than 20
μ
A.
FEATURES
Low current consumption
Outstanding gain and noise figure
Excellent gain stability versus temperature and supply voltage
LNA, mixer and VCO power down capability
Monotonic VCO frequency vs control voltage
PIN CONFIGURATION
SR01429
1
2
3
4
5
6
7
8
9
10
11
12
13
14
20
19
18
17
16
15
GND
LNA OUT
V
CC
LNA IN
GND
GND
MIXER IN
MIXER OUT
MIXER OUT
GND
GND
BYPASS
GND
TANK
GND
GND
LO OUT
PD2
PD1
GND
Figure 1. Pin Configuration
APPLICATIONS
900MHz cellular and cordless front-end
Spread spectrum receivers
RF data links
UHF frequency conversion
Portable radio
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
-40 to +85
°
C
ORDER CODE
DWG #
20-Pin Thin Shrink Small Outline Package (Surface-mount, TSSOP)
SA621DH
SOT360-1
BLOCK DIAGRAM
SR01428
4
3
2
1
5
20
19
18
17
16
7
6
10
9
8
15
14
13
12
11
LO
OUT
GND
BYPASS
GND
V
CC
LNA
IN
GND
MIXER
IN
MIXER
OUT
MIXER
OUT
PD1
PD2
GND
LNA
OUT
GND
GND
TANK
LNA
GND
GND
GND
10pF
10pF
Figure 2. SA621 Block Diagram
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