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부품번호 | HMC542BLP4E 기능 |
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기능 | 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR | ||
제조업체 | Analog Devices | ||
로고 | |||
전체 10 페이지수
HMC542BLP4E
v00.1212
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
SERIAL CONTROL ATTENUATOR, DC - 4 GHz
Typical Applications
The HMC542BLP4E is ideal for:
• Cellular/PCS/3G Infrastructure
• ISM, MMDS, WLAN, WiMAX, & WiBro
• Microwave Radio & VSAT
• Test Equipment and Sensors
Functional Diagram
Features
0.5 dB LSB Steps to 31.5 dB
TTL/CMOS Compatible Serial Data Interface
SPI Compatible Serial Output
± 0.25 dB Typical Step Error
Single +5V Supply
24 Lead 4x4 mm QFN Package: 16 mm²
General Description
The HMC542BLP4E is a broadband 6-bit GaAs IC
digital attenuator with a CMOS compatible serial
to parallel driver in low cost leadless surface mount
package. This serial control digital attenuator incorp
rates off chip AC ground capacitors for near DC opera-
tion, making it suitable for a wide variety of RF and
IF applications. Covering DC to 4 GHz, the inser-
tion loss is 1.7 dB and the attenuator bit values are
0.5 (LSB), 1, 2, 4, 8, and 16 dB for a total attenua-
tion of 31.5 dB. Attenuation accuracy is excellent at
±0.25 dB typical step error with an IIP3 of +50 dBm.
Six bit serial control words are used to select each
attenuation state. A single Vcc bias of +5V is required.
Electrical Specifications, TA = +25° C, with Vcc = +5V
Parameter
Insertion Loss
Attenuation Range
Frequency (GHz)
DC - 1.5 GHz
1.5 - 3.0 GHz
3.0 - 4.0 GHz
DC - 4.0 GHz
Return Loss (RF1 & RF2, All Atten. States)
DC - 4.0 GHz
Min.
Typ.
1.4
1.7
1.9
31.5
19
Max.
1.5
1.8
2.3
Units
dB
dB
dB
dB
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-Tone Input Power= 0 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
DC - 1.0 GHz
1.0 - 4.0 GHz
± (0.20 + 3% of Atten. Setting) Max
± (0.20 + 2.5% of Atten. Setting) Max
dB
dB
0.1 - 4.0 GHz
0.1 - 4.0 GHz
30
50
dBm
dBm
DC - 4.0 GHz
60
100
ns
ns
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HMC542BLP4E
v00.1212
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
SERIAL CONTROL ATTENUATOR, DC - 4 GHz
Relative Phase vs. Frequency
(Only Major States are Shown)
80
60
40
31.5 dB
20 16 dB
8 dB
0
-20
0.5-4 dB
-40
0 0.5 1 1.5 2 2.5 3 3.5 4
FREQUENCY (GHz)
Worst Case Step Error
Between Successive Attenuation States
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
0 0.5 1 1.5 2 2.5 3 3.5 4
FREQUENCY (GHz)
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4페이지 HMC542BLP4E
v00.1212
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
SERIAL CONTROL ATTENUATOR, DC - 4 GHz
Pin Descriptions
Pin Number
Function
1, 3, 5, 14,
16-18, 23
N/C
2 Vcc
Description
These pins are not connected internally. However, all data
shown herein was measured with these pins connected
to RF/DC Ground.
Supply Voltage.
4, 15
6 - 11, 13
12
RF1, RF2
ACG1 - ACG7
N/C
This pin is DC coupled and matched to 50 Ohms
Blocking capacitors are required. Select value based on
lowest frequency of operation.
External capacitor to ground is required. Select value for
lowest frequency of operation. Place capacitor as close to
pins as possible.
This pin is not connected internally and any connection made
to it externally will have no effect on product performance.
Interface Schematic
19 Serial Output
Serial data output. Serial input data
delayed by 8 clock cycles
20 Reset
See truth table, control voltage table and timing diagram.
21 Shift Clock
22 Latch Enable
24 Serial Input
GND
Package bottom has an exposed metal paddle
that must be connected to RF/DC Ground.
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6
7페이지 | |||
구 성 | 총 10 페이지수 | ||
다운로드 | [ HMC542BLP4E.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
HMC542BLP4E | 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR | Analog Devices |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |