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PDF HMC792ALP4E Data sheet ( Hoja de datos )
| Número de pieza | HMC792ALP4E | |
| Descripción | 0.25 LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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v00.0613
HMC792ALP4E
0.25 LSB GaAs MMIC 6-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
Typical Applications
The HMC792ALP4E is ideal for:
• Cellular/3G Infrastructure
• WiBro / WiMAX / 4G
• Microwave Radio & VSAT
• Test Equipment and Sensors
• IF & RF Applications
Functional Diagram
Features
0.25 dB LSB Steps to 15.75 dB
Power-Up State Selection
High Input IP3: +53 dBm
Low Insertion Loss: 1.8 dB @ 2.0 GHz
TTL/CMOS Compatible, Serial, Parallel
or Latched Parallel Control
±0.1 dB Typical Step Error
Single +3V or +5V Supply
24 Lead 4x4mm SMT Package: 16mm2
General Description
The HMC792ALP4E is a broadband 6-bit GaAs IC
Digital Attenuator in a low cost leadless SMT package.
This versatile digital attenuator incorporates off-chip
AC ground capacitors for near DC operation, making
it suitable for a wide variety of RF and IF applications.
The dual mode control interface is CMOS/TTL com-
patible, and accepts either a three wire serial input
or a 6 bit parallel word. The HMC792ALP4E also
features a user selectable power up state and a serial
output port for cascading other Hittite serial controlled
components. The HMC792ALP4E is housed in a
RoHS compliant 4x4 mm QFN leadless package, and
requires no external matching components.
Electrical Specifications, TA = +25° C, Vctl = 0/+Vdd
Parameter
Frequency (GHz)
Min.
Typ.
Vdd = +3V
Insertion Loss
DC - 3.0 GHz
3.0 - 6.0 GHz
1.8
2.3
Attenuation Range
DC - 6.0 GHz
15.75
Return Loss (RF1, RF2, All Atten. States)
DC - 6.0 GHz
18
Max.
2.4
4.0
Min.
Typ.
Vdd = +5V
1.8
2.3
15.75
18
Max.
2.4
4.0
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
DC - 6.0 GHz
± (0.2 + 3% of Atten. Setting) Max.
Input Power for 0.1 dB Compression
Input Third Order Intercept Point
(Two-Tone Input Power= 10 dBm Each Tone)
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
Supply Current
0.05 - 0.15 GHz
0.15 - 6.0 GHz
DC - 6.0 GHz
DC - 6.0 GHz
DC - 6.0 GHz
22
27
53
110
150
2.1
22
31
53
110
150
2.2
Units
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
ns
ns
mA
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1 page  
v00.0613
Input Power for 0.1dB Compression @
Vdd = 3V (Detail of Low Frequency Roll-Off)
32
30
28
26
24
22
20
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
FREQUENCY (GHz)
1
HMC792ALP4E
0.25 LSB GaAs MMIC 6-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
Input Power for 0.1dB Compression @
Vdd = 5V (Detail of Low Frequency Roll-Off)
34
32
30
28
26
24
22
20
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
FREQUENCY (GHz)
1
Serial Control Interface
The HMC792ALP4E contains a 3-wire SPI compatible digital interface (SERIN, CLK, LE). The serial control interface
is activated when P/S is kept high. The 6-bit serial word must be loaded MSB first. The positive-edge sensitive CLK
and LE requires clean transitions. If mechanical switches are used, sufficient debouncing should be provided. When
LE is high, 6-bit data in the serial input register is transferred to the attenuator. When LE is high CLK is masked to
prevent data transition during output loading.
When P/S is low, 3-wire SPI interface inputs (SERIN, CLK, LE) are disabled and the input register is loaded with
parallel digital inputs (D0-D5). When LE is high, 6-bit parallel data changes the state of the part per truth table.
For all modes of operations, the attenuation state will stay constant while LE is kept low.
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4
5 Page 
Notes:
v00.0613
HMC792ALP4E
0.25 LSB GaAs MMIC 6-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
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10
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet HMC792ALP4E.PDF ] | |
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