4304-01
器件描述：75 Ohm RF Digital Attenuator 6-bit, 31.5 dB, DC - 2.0 GHz
器件厂商：PEREGRINE [Peregrine Semiconductor Corp.]
文件大小：543.4KB，共11页
Sponsor by e络盟器件资料摘要：
Page 1 of 11
Document No. 70-0066-03 │ www.psemi.com ©2005 Peregrine Semiconductor Corp. All rights reserved.
4x4 mm -20 Lead QFN
The PE4304 is a 75-ohm high-linearity, 6-bit RF Digital Step
Attenuator (DSA) covering a 31.5 dB attenuation range in 0.5
dB steps. The PE4304 provides both a parallel (latched or
direct mode) and serial CMOS control interface, operates on a
single 3-volt supply and maintains high attenuation accuracy
over frequency and temperature. It also has a unique control
interface that allows the user to select an initial attenuation
state at power-up. The PE4304 exhibits very low insertion loss
and low power consumption. This functionality is delivered in a
4x4 mm QFN footprint.
The PE4304 is manufactured on Peregrine’s UltraCMOS™
process, a patented variation of silicon-on-insulator (SOI)
technology on a sapphire substrate, offering the performance
of GaAs with the economy and integration of conventional
CMOS.
Product Specification
75 Ω RF Digital Attenuator
6-bit, 31.5 dB, DC – 2.0 GHz
Product Description
Figure 1. Functional Schematic Diagram
PE4304
Features
• 75 Ω impedance
• Attenuation: 0.5 dB steps to 31.5 dB
• Low distortion for CATV and multi-carrier
applications
• Flexible parallel and serial programming
interfaces
• Unique power-up state selection
• Positive CMOS control logic
• High attenuation accuracy and linearity
over temperature and frequency
• Very low power consumption
• Single-supply operation
• Packaged in a 20 lead 4x4 mm QFN
Table 1. Electrical Specifications @ +25 °C, V
DD
= 3.0 V, Z
o
= 75 Ω
Notes: 1. Device Linearity will begin to degrade below 1Mhz
2. Max input rating in Table 2 & Figures on Pages 4 to 6 for data across frequency.
3. Note Absolute Maximum in Table 3.
4. Measured in a 50 Ω system.
Control Logic Interface
Parallel Control
Power-Up Control
Serial Control
RF Input RF Output
Switched Attenuator Array
6
3
2
Parameter Test Conditions Frequency Minimum Typical Maximum Units
Operation Frequency DC 2000 MHz
Insertion Loss
2
DC ≤ 1.2 GHz - 1.4 1.8 dB
Attenuation Accuracy
Any Bit or Bit
Combination
DC ≤ 1.2 GHz - -
±(0.15 + 4% of attenuation
setting)
dB
1 dB Compression
3,4
1 MHz ≤ 1.2 GHz 30 34 - dBm
Input IP3
1,2,4
Two-tone inputs up to
+18 dBm
1 MHz ≤ 1.2 GHz - 52 - dBm
Return Loss DC ≤ 1.2 GHz 10 13 - dB
Switching Speed
50% control to 0.5 dB
of final value
- - 1 µs
Figure 2. Package Type
Document No. 70-0066-03 │ www.psemi.com ©2005 Peregrine Semiconductor Corp. All rights reserved.
4x4 mm -20 Lead QFN
The PE4304 is a 75-ohm high-linearity, 6-bit RF Digital Step
Attenuator (DSA) covering a 31.5 dB attenuation range in 0.5
dB steps. The PE4304 provides both a parallel (latched or
direct mode) and serial CMOS control interface, operates on a
single 3-volt supply and maintains high attenuation accuracy
over frequency and temperature. It also has a unique control
interface that allows the user to select an initial attenuation
state at power-up. The PE4304 exhibits very low insertion loss
and low power consumption. This functionality is delivered in a
4x4 mm QFN footprint.
The PE4304 is manufactured on Peregrine’s UltraCMOS™
process, a patented variation of silicon-on-insulator (SOI)
technology on a sapphire substrate, offering the performance
of GaAs with the economy and integration of conventional
CMOS.
Product Specification
75 Ω RF Digital Attenuator
6-bit, 31.5 dB, DC – 2.0 GHz
Product Description
Figure 1. Functional Schematic Diagram
PE4304
Features
• 75 Ω impedance
• Attenuation: 0.5 dB steps to 31.5 dB
• Low distortion for CATV and multi-carrier
applications
• Flexible parallel and serial programming
interfaces
• Unique power-up state selection
• Positive CMOS control logic
• High attenuation accuracy and linearity
over temperature and frequency
• Very low power consumption
• Single-supply operation
• Packaged in a 20 lead 4x4 mm QFN
Table 1. Electrical Specifications @ +25 °C, V
DD
= 3.0 V, Z
o
= 75 Ω
Notes: 1. Device Linearity will begin to degrade below 1Mhz
2. Max input rating in Table 2 & Figures on Pages 4 to 6 for data across frequency.
3. Note Absolute Maximum in Table 3.
4. Measured in a 50 Ω system.
Control Logic Interface
Parallel Control
Power-Up Control
Serial Control
RF Input RF Output
Switched Attenuator Array
6
3
2
Parameter Test Conditions Frequency Minimum Typical Maximum Units
Operation Frequency DC 2000 MHz
Insertion Loss
2
DC ≤ 1.2 GHz - 1.4 1.8 dB
Attenuation Accuracy
Any Bit or Bit
Combination
DC ≤ 1.2 GHz - -
±(0.15 + 4% of attenuation
setting)
dB
1 dB Compression
3,4
1 MHz ≤ 1.2 GHz 30 34 - dBm
Input IP3
1,2,4
Two-tone inputs up to
+18 dBm
1 MHz ≤ 1.2 GHz - 52 - dBm
Return Loss DC ≤ 1.2 GHz 10 13 - dB
Switching Speed
50% control to 0.5 dB
of final value
- - 1 µs
Figure 2. Package Type