REVERSE PATH HIGH OUTPUT POWER PROGRAMMABLE GAIN AMPLIFIER
Preliminary
RF3321
REVERSE PATH HIGH OUTPUT POWER PROGRAMMABLE GAIN AMPLIFIER
2
Typical Applications
• Euro-DOCSIS/DOC...
Description
Preliminary
RF3321
REVERSE PATH HIGH OUTPUT POWER PROGRAMMABLE GAIN AMPLIFIER
2
Typical Applications
Euro-DOCSIS/DOCSIS Cable Modems CATV Set-Top Boxes Telephony Over Cable
Home Networks Automotive/Mobile Multimedia Coaxial and Twisted Pair Line Driver
3
-A-
The RF3321 is a variable gain amplifier for use in CATV 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 programmable via three-wire digital bus for compatibility with standard baseband chipsets. Amplifier shutdown and transmit disable modes are hardware-controlled. The device operates over the frequency band of 5MHz to 65MHz for use in current U.S. and European systems. The amplifier delivers up to +69dBmV at the output of the balun. Gain is controllable in accurate 1dB steps. The device is provided in a thermally enhanced, exposed die flag package.
3.90 + 0.10
0.25 + 0.05
0.05 + 0.05
Note 3
4.90 + 0.20
0.65
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.
6.00 + 0.20
1.40 + 0.10
EXPOSED DIE FLAG
8° MAX 0° MIN
3.302
0.60 + 0.15
0.24 0.20 2.286
Optimum Technology Matching® Applied
Package Style: SSOP16 EDF Slug
üSi Bi-CMOS
SHDNB TX EN NC VIN VINB VCC1 VCC1 RAMP 1 2 3 4 5 6 7 8
Si BJT
GaAs HBT SiGe HBT
GaAs MESFET Si CMOS
Features
Differential Input and Output 31dB M...
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