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| 型号： | MAX2034CTM+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 8/13页 |
| 文件大小： | 0K |
| 描述： | IC AMP LOW NOISE QUAD 48-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 43 |
| 频率： | 70MHz |
| P1dB： | 3dBm（2mW） |
| 增益： | 19dB |
| 噪音数据： | 2.2dB |
| RF 型： | SONAR |
| 电源电压： | 4.75 V ~ 5.25 V |
| 电流 - 电源： | 46.5mA ~ 54.5mA |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 包装： | 管件 |
Quad-Channel, Ultra-Low-Noise Amplifier with
Digitally Programmable Input Impedance
PD
ZF1
Functional Diagram
D2/D1/D0
Digitally Programmable Input Impedance
The MAX2034 features an on-chip digitally programma-
ble input impedance, which makes the part compatible
with a variety of source impedances ranging from 50 ?
to 1k ? . The input impedance can be programmed for
50 ? , 100 ? , 200 ? , or 1k ? through the digital inputs D2,
D1, and D0. See Table 1 for programming details. In
addition to these fixed values, virtually any other input
impedance can be supported by using an off-chip
external feedback resistor, R F . To utilize this feature, set
D2, D1, and D0 to any of the four external resistor-con-
IN1
OUT1-
trolled states shown in Table 1. The value of the off-chip
INC1
OUT1+
feedback resistor can be determined by using the fol-
lowing relationship:
R F = (1 + (A / 2)) x R S
INB1
ZF2
IN2
INC2
INB2
ZF3
MAX2034
OUT2-
OUT2+
where R S is the source impedance, and A is the gain of
the amplifier (A = 9) defined with a differential output.
Noise Figure
The MAX2034 is designed to provide maximum input
sensitivity with its exceptionally low noise figure. The
input active devices are selected for very low equiva-
lent input noise voltage and current, and they have
been optimized for source impedances from 50 ? to
1000 ? . Additionally, the noise contribution of the
matching resistor is effectively divided by 1 + (A / 2).
Using this scheme, typical noise figure of the amplifier
is approximately 2.2dB for R IN = R S = 200 ? . Table 2
illustrates the noise figure for other input impedances.
Table 2. Noise Figure vs. Source and
Input Impedances
Rs ( ? )
R IN ( ? )
NF (dB)
IN3
OUT3-
50
50
4.1
INC3
OUT3+
100
200
1000
100
200
1000
2.9
2.2
1.4
INB3
Input Clamp
The MAX2034 includes configurable integrated input-
clamping diodes. The diodes are clamped to ground at
ZF4
±275mV. The input-clamping diodes can be used to
prevent large transmit signals from overdriving the inputs
of the amplifiers. Overdriving the inputs could possibly
IN4
OUT4-
place charge on the input-coupling capacitor, causing
INC4
INB4
OUT4+
longer transmit overload recovery times. Input signals
are AC-coupled to the single-ended inputs IN1–IN4, but
are clamped with the INC1–INC4 inputs. See the Typical
Application Circuit . If external clamping devices are pre-
ferred, simply leave INC1–INC4 unconnected.
8
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相关代理商/技术参数 |
参数描述 |
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| MAX2034CTM+ | 功能描述:射频放大器 4Ch Amp w/Digital Prog Input Imp RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| MAX2034CTM+T | 功能描述:射频放大器 4Ch Amp w/Digital Prog Input Imp RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| MAX2034CTM-T | 功能描述:射频放大器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| MAX2035 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Ultrasound Variable-Gain Amplifier |
| MAX2035_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Ultrasound Variable-Gain Amplifier |
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