- 您现在的位置：买卖IC网 > Sheet目录471 > MAX2027EUP+D (Maxim Integrated)IC AMP VAR GAIN 20-TSSOP
IF Digitally Controlled Variable-Gain Amplifier
Pin Description
PIN
1, 2, 11
3
4, 5, 16, 17,
19, 20, EP
6–10
12
13
14
15
18
NAME
V CC
RF_IN
GND
B4–B0
RF_OUT
I SET
I BIAS
AMP IN
ATTN OUT
FUNCTION
Power Supply. Bypass to GND with capacitors as close to the pin as possible as shown in the typical
application circuit (Figure 1).
Signal Input. See the typical application circuit for recommended component values. Requires an
external DC-blocking capacitor.
Ground. Use low-inductance layout techniques on PC board. Solder the exposed pad evenly to the
board ground plane.
Gain-Control Bits. See Table 3 for gain setting.
Signal Output. Requires an external pullup choke inductor (52mA typical current) to V CC along with a
DC-blocking capacitor (Figure 1).
Connect an 825 ? resistor from I SET to GND.
Amplifier Bias. Connect to AMP IN (pin 15) through a choke inductor (0.3mA typ).
Amplifier Input. Requires a DC-coupling capacitor to allow biasing.
Attenuator Output. Requires an external DC-blocking capacitor.
Detailed Description
The MAX2027 is a high-performance, digitally con-
Table 1. Suggested Components of
Typical Application Circuit
trolled variable-gain amplifier for use in applications
from 50MHz to 400MHz.
The MAX2027 incorporates a digital attenuator with a
23dB selectable attenuation range followed by a fixed-
gain, high-linearity amplifier. The attenuator is digitally
controlled through five logic lines: B0–B4. This on-chip
attenuator provides up to 23dB of attenuation with
±0.05dB state-to-state accuracy. The fixed-gain amplifi-
er utilizes negative feedback to achieve high stability,
gain, linearity, and wide bandwidth.
Applications Information
COMPONENT
C1, C3, C4
C2, C5
C6, C7
C10
R1
R2–R6
L1
L2
VALUE
1000pF
100pF
0.1μF
0.047μF
825 ? ±1%
47k ?
330nH
680nH
SIZE
0603
0603
0603
0603
0603
0603
0805
1008
Input and Output Matching
The MAX2027 incorporates on-chip input and output
Table 2. Suggested Matching
matching for operation below 250MHz. Use a DC-block-
ing capacitor value of 1000pF for pins 3, 12, and 18 (see
Figure 1). For operation above 250MHz, external match-
ing improves performance. Table 1 and Table 2 provide
recommended components for device operation.
Digitally Controlled Attenuator
The digital attenuator is controlled through five logic
Components
FREQUENCY
300MHz
400MHz
COMPONENT
L3, L4
C8, C9
L3, L4
C8, C9
VALUE
11nH
6.8pF
8.7nH
5pF
SIZE
0603
0603
0603
0603
lines: B0, B1, B2, B3, and B4. Table 3 lists the attenua-
tion settings. The input and output of this attenuator
require external DC-blocking capacitors. This attenua-
tor insertion loss is 2dB when the attenuator is set to
0dB (B0 = B1 = B2 = B3 = B4 = 0).
_______________________________________________________________________________________
7
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MAX2027EVKIT
EVAL KIT FOR MAX2027
MAX2029ETP+T
IC MIXER UP/DOWN HI LIN 20-TQFN
MAX2031EVKIT
EVAL KIT FOR MAX2031
MAX2032ETP+
IC MIXER UP/DOWN CONVER 20TQFN
MAX2034CTM+
IC AMP LOW NOISE QUAD 48-TQFN
MAX2035EVKIT
EVAL KIT FOR MAX2035
MAX2039ETP+D
IC MIXER UP/DWN HI LIN 20-TQFN
MAX2039EVKIT
EVAL KIT FOR MAX2039
相关代理商/技术参数
MAX2027EUP+T
制造商:Maxim Integrated Products 功能描述:RF AMP CHIP SGL GAIN AMP 400MHZ 5.25V 20TSSOP EP - Tape and Reel
MAX2027EUP+TD
功能描述:射频放大器 IF Dig Controlled Variable-Gain Amp 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
MAX2027EUP-D
功能描述:射频放大器 IF Dig Controlled Variable-Gain Amp 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
MAX2027EUP-T
制造商:Maxim Integrated Products 功能描述:IF DIGITALLY CONTROLLED VARIABLE-GAIN AMPLIFI - Tape and Reel
MAX2027EUP-TD
功能描述:射频放大器 IF Dig Controlled Variable-Gain Amp 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
MAX2027EVKIT
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
MAX20-28.0C
制造商:MDE 制造商全称:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE
MAX20-28.0CA
制造商:MDE 制造商全称:MDE Semiconductor, Inc. 功能描述:HIGH CURRENT TRANSIENT VOLTAGE SUPPRESSOR (TVS) DIODE