有线电视放大器

主页

有线电视放大器

SG211 5–700 MHz Balanced Return Path Amplifier

SG211 5–700 MHz Balanced Return Path Amplifier for DOCSIS 4.0 Applications

SG211 5–700 MHz Balanced Return Path Amplifier

主要特点

● 工作频率范围:5 MHz 至 700 MHz
● 典型增益 27 dB
● +23 dBm P1dB
● +38 dBm OIP3
● 噪声系数:1.5dB @700MHz
● 5V/75Ω平衡设计
● 符合RoHS标准

 

SG211 is a GaAs pHEMT balanced RF amplifier designed for 5–700 MHz return-path and upstream applications. Operating from a single 5 V supply, it combines 27 dB typical gain, low noise and high output linearity for DOCSIS 4.0 optical nodes, amplifiers and CMTS-related equipment.

The differential RF architecture and 75 Ω system interface make SG211 suitable for broadband CATV upstream signal chains where low noise, high gain and linear output performance are required.

Reference Application Circuit

SG211 5–700 MHz balanced return path amplifier reference application circuit

■ Pin Assignment & Package

SG211 5–700 MHz balanced return path amplifier 8-pin SOIC pin assignment
Pin Name Function
1 RFIN+ RF Input +
4 RFIN− RF Input −
5 RFOUT− / VDD2 RF output − and VDD through RF choke
8 RFOUT+ / VDD1 RF output + and VDD through RF choke
2, 3, 6, 7 GND Ground

Body Size: 5.0 × 4.0 × 1.52 mm Max.

The compact 8-pin SOIC package makes SG211 suitable for broadband CATV return-path and upstream amplifier designs where PCB space and thermal performance are important.

CATV return-path amplifier evaluation

Evaluating an Alternative Return Path Amplifier?

SG211 is a 5 V, 8-pin SOIC balanced RF amplifier covering 5–700 MHz. It can be considered for engineering evaluation in selected CATV return-path and upstream amplifier designs. Frequency range, gain, noise figure, output linearity, balanced RF architecture and existing bias circuitry should be reviewed for the intended application.

5–700 MHz 5 V supply 8-Pin SOIC 27 dB gain

Qorvo reference part

QPB8896

5–700 MHz Balanced Return Path Amplifier

 

QPB8896 and SG211 are both 5 V balanced RF amplifiers covering 5–700 MHz for CATV return-path and upstream applications. QPB8896 provides 25 dB typical gain, while SG211 provides 27 dB typical gain, with similar P1dB and OIP3 performance.

Gain & current: SG211 provides approximately 2 dB higher typical gain while operating at a slightly lower typical current.

MACOM reference part

MAAM-011163

5–1218 MHz Differential CATV Amplifier

 

MAAM-011163 and SG211 are both 5 V differential amplifiers for 75 Ω CATV signal chains, with balanced RF input and output architecture. SG211 provides 27 dB typical gain compared with 19 dB for MAAM-011163 and is optimized for the 5–700 MHz return path.

Gain comparison: SG211 provides substantially higher typical gain for 5–700 MHz return-path applications.

Analog Devices reference part

ADCA5191

5 MHz–1.8 GHz Broadband CATV Amplifier

 

ADCA5191 and SG211 can both serve as CATV upstream amplification stages across the 5–700 MHz return path. SG211 provides 27 dB typical gain from a fixed 5 V supply and uses a compact 8-pin SOIC package, while ADCA5191 uses a wider-band, adjustable-bias architecture.

Implementation comparison: SG211 uses a simpler fixed 5 V supply and compact 8-pin SOIC package for 5–700 MHz upstream designs.

MACOM reference part

MAAM-011185

5–300 MHz CATV Return Path Differential Amplifier

 

MAAM-011185 and SG211 are both 5 V differential amplifiers designed for CATV return-path applications. SG211 extends the operating range from 300 MHz to 700 MHz and provides 27 dB typical gain compared with 21.2 dB for MAAM-011185.

Frequency coverage: SG211 extends return-path operation from 300 MHz to 700 MHz while providing higher typical gain.

Published specifications for reference parts may use different test frequencies, bias conditions and evaluation circuits. Compare devices at the same frequencies and circuit conditions before qualification.

Critical check: pin configuration and bias network

Cross-reference information is provided for evaluation purposes. Electrical characteristics, pin configuration, balanced input/output arrangement, RF choke bias network, package and PCB compatibility should be verified for each application. SG211 should not be described as a drop-in or pin-to-pin replacement unless circuit-level compatibility has been independently confirmed.

What to verify in your design

RF performance Gain, NF, OP1dB, OIP3 and return loss across the operating band.
Circuit and supply Pin assignment, output bias, RF chokes, transformers, current budget and thermal margin.
Sourcing needs Qualification timeline, sample quantity and estimated annual demand.

Request a cross-reference review

Send your original part number, frequency range, target gain/NF, OP1dB/OIP3 requirements, schematic or BOM (if available), and annual quantity to the SANLAND engineering team.

Request a Cross-Reference Review

Frequently Asked Questions

What is the frequency range of SG211?

SG211 operates from 5 MHz to 700 MHz and is designed for 75 Ω return-path and upstream RF applications.

What are the typical gain and linearity of SG211?

At +5 V, SG211 typically provides 27 dB gain, +23 dBm OP1dB and +38 dBm OIP3.

Is SG211 designed for DOCSIS 4.0 return-path applications?

Yes. SG211 is designed as a balanced return-path amplifier for applications including CMTS equipment, return-path optical receivers, full-duplex upstream, DOCSIS 4.0 optical nodes and amplifiers.

Can SG211 be evaluated as an alternative to QPB8896, MAAM-011163, ADCA5191 or MAAM-011185?

Yes. SG211 can be evaluated as an alternative for selected broadband CATV return-path and upstream amplifier designs. Frequency range, gain, linearity, noise figure, pin configuration, bias network and PCB compatibility should be verified before replacement.

What applications is SG211 designed for?

SG211 is intended for return-path optical receivers, CMTS equipment, full-duplex upstream, DOCSIS 4.0 optical nodes and CATV amplifiers.

Does SG211 use a balanced RF architecture?

Yes. SG211 provides differential RF input and output connections through RFIN+/RFIN− and RFOUT+/RFOUT−.

01
SG211 / 射频性能

典型射频性能

范围 典型的
频率 5–700 MHz
供电电压 5伏
供电电流 256毫安
获得 27 分贝
增益斜率 1 分贝
反向隔离 31 分贝
输入收益损失 20 分贝
输出收益损失 19 分贝
噪声系数 1.1 分贝
OIP2L 62 分贝
OIP2U 65 分贝
OIP3 38 dBm
OP1dB 23 dBm
热阻 57 °C/W
测试基础

典型值在 T 处指定电磁脉冲 = +25°C,VDD 在 75 Ω 系统中,除非另有说明,否则输出为 +5 V,全频段。OIP2 使用 6 MHz 的音调间隔,每个音调输出 +5 dBm;OIP3 使用 1 MHz 的音调间隔,每个音调输出 +5 dBm。

02
SG211 / 测量曲线

典型性能曲线

射频特性
01 S21 / 增益 前期收益
SG211 S21 gain vs frequency from 5 MHz to 700 MHz
02 S11 / 输入返回损失 输入匹配
SG211 S11 input return loss vs frequency from 5 MHz to 700 MHz
03 S22 / 输出收益损失 输出匹配
SG211 S22 output return loss vs frequency from 5 MHz to 700 MHz
04 S12 / 反向隔离 反向隔离
SG211 S12 reverse isolation vs frequency from 5 MHz to 700 MHz
线性度和噪声
05 噪声系数 噪声响应
SG211 noise figure vs frequency from 5 MHz to 700 MHz at 5 V
06 输出 P1dB 输出压缩
SG211 output P1dB vs frequency from 5 MHz to 700 MHz at 5 V
07 OIP3 线性响应
SG211 OIP3 vs frequency from 5 MHz to 700 MHz at 5 V
Headend and CMTS equipment for broadband upstream CATV amplification

Headend & CMTS Equipment

Broadband upstream amplification for CATV headend and CMTS signal chains.

HeadendCMTSUpstream
Return path optical receiver post-amplification for upstream RF output

Return Path Optical Receivers

Post-amplification for upstream RF outputs from return-path optical receivers.

Optical RXReturn PathUpstream RF
Full duplex upstream RF path amplification

Full Duplex Upstream

Low-noise, high-linearity amplification for full-duplex upstream RF paths.

FDXLow NoiseHigh Linearity
DOCSIS 4.0 optical node and CATV amplifier return path amplification

DOCSIS 4.0 Nodes & Amplifiers

5–700 MHz return-path amplification for DOCSIS 4.0 optical nodes and CATV amplifiers.

5–700 MHzDOCSIS 4.0CATV

留言

留言
*如需产品资料、选型支持、样品或报价,请在此留言,我们会尽快回复您。
提交

主页

产品中心

whatsApp

联系我们