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PDF RF3320 Data sheet ( Hoja de datos )
| Número de pieza | RF3320 | |
| Descripción | CABLE REVERSE PATH PROGRAMMABLE GAIN AMPLIFIER | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RF3320 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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Preliminary
3
Typical Applications
• Euro-DOCSIS/DOCSIS Cable Modems
• CATV Set-Top Boxes
• Telephony Over Cable
RF3320
CABLE REVERSE PATH
PROGRAMMABLE GAIN AMPLIFIER
• Home Networks
• Automotive/Mobile Multimedia
• Coaxial and Twisted Pair Line Driver
3
Product Description
The RF3320 is a variable gain amplifier for use in CATV
3.90
+ 0.10
reverse path (upstream) applications. It is DOCSIS-com-
pliant for use in cable modems. The gain control covers a
58dB range and is serially programmable via three-wire
4.90
+ 0.20
digital bus for compatibility with standard baseband
chipsets. Amplifier shutdown and transmit disable modes
are software- and hardware-controlled. The device is
placed into software-shutdown mode via the serial control
6.00
+ 0.20
bus. The device operates over the frequency band of
5MHz to 65MHz for use in current U.S. and European
8° MAX
0° MIN
systems. The amplifier delivers up to 60dBmV at the out-
put of the balun. Gain is controllable in accurate 1dB
steps. The device is provided in a thermally enhanced,
0.60
+ 0.15
exposed die flag package.
0.25
+ 0.05
0.65
1.40
+ 0.10
-A- 0.05
+ 0.05
Note 3
NOTES:
1. Shaded lead is pin 1.
2. Lead coplanarity - 0.10 with
respect to datum "A".
3. Lead standoff is specified from
the lowest point on the package
underside.
EXPOSED DIE
FLAG
0.24
0.20
3.302
2.286
Optimum Technology Matching® Applied
Si BJT
üSi Bi-CMOS
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
SHDNB 1
TX EN 2
NC 3
VIN 4
VINB 5
VCC 6
VCC 7
RAMP 8
Power
Control
Gain Control
and Serial Bus
16 GND
15 NC
14 NC
13 VOUT
12 VOUTB
11 SDA
10 CS
9 SCLK
Package Style: SSOP-16 EDF Slug
Features
• Single 5V Supply
• Differential Input and Output
• -30dB to +28dB Voltage Gain Range
• 5MHz to 65MHz Operation
• Sophisticated Power Management
• DOCSIS 1.1 RF Compliant
Ordering Information
RF3320
Cable Reverse Path Programmable Gain Amplifier
RF3320 PCBA Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Rev A10 010514
3-27
1 page  
Preliminary
Table 1. Serial Interface Control Word Format
Bit Mnemonic
Description
MSB 6
5
4
3
2
1
LSB 0
D6 Sleep Mode (Software Shutdown)
D5 Gain Control, Bit MSB
D4 Gain Control, Bit 4
D3 Gain Control, Bit 3
D2 Gain Control, Bit 2
D1 Gain Control, Bit 1
D0 Gain Control, Bit LSB
Serial Bus Timing Diagram
TES
TDATAH,TDATAL
TDS TDH
CS
RF3320
TWH
TC
TEH
3
SCLK
SDA
D0
D1 D2
D3 D4
D5
D6
(Data)
Table 2. Timing Data
Parameter
SCLK Pulsewidth
SCLK Period
Setup Time, SDA versus S CLK
Setup Time, CS versus S CLK
Hold Time, SDA versus S CLK
Hold Time, CS versus S CLK
SCLK Pulsewidth, High
SCLK Pulsewidth, Low
Table 3. Programming State
Enter Sleep Mode
Exit Sleep Mode
Enter Shutdown
Exit Shutdown
TX Enable
TX Disable
Symbol
TWH
TC
TDS
TES
TDH
TEH
TDATAH
TDATAL
Min
50
100
10
10
20
20
50
50
Typ
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
TX SHDND MSB6
XHL
H=High Voltage Logic
X H H*
L=Low Voltage Logic
XLX
X=Don’t Care
X H H* *Gain Control Data Must be Re-Sent
HXX
LXX
Rev A10 010514
3-31
5 Page 
Preliminary
-28.0
-28.2
-28.4
-28.6
-28.8
-29.0
-29.2
-29.4
-29.6
-29.8
-30.0
4.7
Gain versus Supply Voltage
at Gain Control Word = 0
5 MHz at 85°C
65 MHz at 85°C
42 MHz at 0°C
5 MHz at -40°C
65 MHz at -40°C
42 MHz at 85°C
5 MHz at 0°C
65 MHz at 0°C
42 MHz at -40°C
4.8 4.9 5.0 5.1 5.2 5.3
Supply Voltage (V)
-1 dB Compression Point
(GCW = 29)
40.0
Gain Control Word = 29
39.0 Trend
38.0
37.0
36.0
35.0
34.0
33.0
32.0
31.0
33.8 34.8 35.8 36.8 37.8 38.8 39.8 40.8 41.8
Power In (dBmV)
Third Harmonic versus Frequency and Output Level
-50.0
-55.0
-60.0
-65.0
-70.0
30dBmV
57dBmV
60dBmV
-75.0
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0
Frequency (MHz)
Rev A10 010514
RF3320
-1 dB Compression Point
(GCW = 58)
68.0
Gain Control Word = 58
67.0
Trend
66.0
65.0
64.0
63.0
62.0
61.0
60.0
33.8 34.8 35.8 36.8 37.8 38.8 39.8 40.8 41.8
Power In (dBmV)
Second Harmonic versus Frequency and Output Level
-50.0
-55.0
30dBmV
57dBmV
60dBmv
-60.0
-65.0
-70.0
-75.0
0.0
10.0 20.0 30.0 40.0 50.0 60.0 70.0
Frequency (MHz)
3
3-37
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet RF3320.PDF ] | |
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