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RF3321 반도체 회로 부품 판매점

REVERSE PATH HIGH OUTPUT POWER PROGRAMMABLE GAIN AMPLIFIER



RF Micro Devices 로고
RF Micro Devices
RF3321 데이터시트, 핀배열, 회로
Preliminary
2
Typical Applications
• Euro-DOCSIS/DOCSIS Cable Modems
• CATV Set-Top Boxes
• Telephony Over Cable
RF3321
REVERSE PATH HIGH OUTPUT POWER
PROGRAMMABLE GAIN AMPLIFIER
• Home Networks
• Automotive/Mobile Multimedia
• Coaxial and Twisted Pair Line Driver
3
Product Description
The RF3321 is a variable gain amplifier for use in CATV
3.90
+ 0.10
reverse path (upstream) applications. It is designed to be
DOCSIS-compliant for use in cable modems. The gain
control covers a 56dB range and is serially programma-
4.90
+ 0.20
ble via three-wire digital bus for compatibility with stan-
dard baseband chipsets. Amplifier shutdown and transmit
disable modes are hardware-controlled. The device oper-
ates over the frequency band of 5MHz to 65MHz for use
6.00
+ 0.20
in current U.S. and European systems. The amplifier
delivers up to +69dBmV at the output of the balun. Gain
8° MAX
0° MIN
is controllable in accurate 1dB steps. The device is pro-
vided in a thermally enhanced, exposed die flag package.
0.60
+ 0.15
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
3.302
0.24
0.20
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
VCC1 6
VCC1 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
Functional Block Diagram
Package Style: SSOP16 EDF Slug
Features
• Differential Input and Output
• 31dB Maximum Voltage Gain
• -25dB Minimum Voltage Gain
• 5MHz to 65MHz Operation
• Sophisticated Power Management
• DOCSIS 1.1 RF Compliant
Ordering Information
RF3321
RF3321 PCBA
Reverse Path High Output Power Programmable
Gain Amplifier
Fully Assembled Evaluation Board
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Rev A10 010516
2-1


RF3321 데이터시트, 핀배열, 회로
RF3321
Preliminary
Absolute Maximum Ratings
Parameter
Rating
Supply Voltage (VCC1)
Supply Voltage (VCC2)
Input RF Level
Operating Ambient Temperature
Storage Temperature
Humidity
Maximum Power Dissipation
3 Maximum TJ
-0.5 to +5.5
-0.5 to +7.5
12
-40 to +85
-40 to +150
80
0.5
150
Unit
VDC
VDC
dBm
°C
°C
%
W
°C
Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate
at the time of this printing. However, RF Micro Devices reserves the right to
make changes to its products without notice. RF Micro Devices does not
assume responsibility for the use of the described product(s).
Parameter
Overall
DC Specifications
Supply Voltage 1 (VCC1)
Supply Voltage 2 (VCC2)
Supply Current
Maximum Gain, SV1
Maximum Gain, SV2
Low Gain, SV1
Low Gain, SV2
Transmit Disable
Shut Down
Logic High Voltage
Logic Low Voltage
Logic Leakage Current
AC Specifications
Voltage Gain
Maximum
Minimum
Bandwidth
Maximum Input Level
Maximum Output Level
Output Harmonic Distortion
Output Step Size
Output Noise
Maximum Gain
Minimum Gain
Transmit Disabled
TX EN Enable Time
TX EN Transient Duration
Specification
Min.
Typ.
Max.
4.75 5.0 5.25
6.65 7.0 7.35
85 100
135 150
75 90
55 70
25 35
5
2
0.8
-1 1
Unit
V
V
mA
mA
mA
mA
mA
mA
V
V
µA
Condition
VCC1=5V, VCC2=7V, TXEN=SHDNB=1,
VIN=38dBmV (rms) differential, output
impedance=75through a 2:1 transformer.
Typical performance is at TA=+25°C,
VCC = 5 V.
Main chip supply
Output stage supply
Gain Control Word=56, VCC2=5V or 7V
Gain Control Word=56, VCC2=5V or 7V
Gain Control Word<28, VCC2=5V or 7V
Gain Control Word<28, VCC2=5V or 7V
TXEN=0, VCC2=5V or 7V
SHDNB=0, VCC2=5V or 7V
29 31
dB Gain Control Word=56, VCC2=5V or 7V
-25 -23 dB Gain Control Word=0, VCC2=5V or 7V
100
MHz
Intended operating range is 5MHz to
65 MHz.
40 dBmV(rms)
69 dBmV(rms) Into 75load at balun output (CW),
VCC2 = 7 V
65 dBmV VCC2=5V
-56 -50 dBc Output Level=68dBmV (rms) (CW)
Maximum Gain, VCC2=5V or 7V
0.8 1.0 1.1 dB
-35 -30 dBmV/ VCC2=5V or 7V
160 kHz
-50 -45 dBmV/ VCC2=5V or 7V
160 kHz
-75 -70 dBmV/ TXEN=0, VCC2=5V or 7V
160 kHz
0.5 1.0 µS Time for gain to reach 99% of final value.
See Note 1.
2.4 3.0
µS See Note 1.
2-2 Rev A10 010516




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RF3321 amplifier

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