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PDF ADL5811 Data sheet ( Hoja de datos )
| Número de pieza | ADL5811 | |
| Descripción | IF Amplifier and Wideband LO Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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High IP3, 700 MHz to 2800 MHz, Double Balanced,
Passive Mixer, IF Amplifier, and Wideband LO Amplifier
ADL5811
FEATURES
RF frequency: 700 MHz to 2800 MHz continuous
LO frequency: 250 MHz to 2800 MHz, high-side or
low-side inject
IF range: 30 MHz to 450 MHz
Power conversion gain of 7.5 dB at 1900 MHz
SSB noise figure of 10.7 dB at 1900 MHz
Input IP3 of 27.5 dBm at 1900 MHz
Input P1dB of 12.7 dBm at 1900 MHz
Typical LO drive of 0 dBm
Single-ended, 50 Ω RF port
Single-ended or balanced LO input port
Single-supply operation: 3.6 V to 5.0 V
Serial port interface control on all functions
Exposed paddle 5 mm × 5 mm, 32-lead LFCSP package
APPLICATIONS
Multiband/multistandard cellular base station receivers
Wideband radio link diversity downconverters
Multimode cellular extenders and broadband receivers
FUNCTIONAL BLOCK DIAGRAM
32 31 30 29 28 27 26 25
NC 1
24 NC
RFCT 2
NC 3
23 NC
ADL5811
22 NC
RFIN 4
21 LOIP
NC 5
20 LOIN
NC 6
NC 7
NC 8
9
BIAS
GEN
SERIAL
PORT
INTERFACE
19 LE
18 DATA
17 CLK
10 11 12 13 14 15 16
Figure 1.
GENERAL DESCRIPTION
The ADL5811 uses revolutionary new broadband, square
wave limiting, local oscillator (LO) amplifiers to achieve an
unprecedented radio frequency (RF) bandwidth of 700 MHz
to 2800 MHz. Unlike conventional narrow-band sine wave LO
amplifier solutions, this permits the LO to be applied either
above or below the RF input over an extremely wide bandwidth.
Because energy storage elements are not used, the dc current
consumption also decreases with decreasing LO frequency.
The ADL5811 uses highly linear, doubly balanced, passive
mixer cores along with integrated RF and LO balancing circuits
to allow single-ended operation. The ADL5811 incorporates
programmable RF baluns, allowing optimal performance over a
700 MHz to 2800 MHz RF input frequency. The balanced passive
mixer arrangement provides outstanding LO-to-RF and LO-to-
IF leakages, excellent RF-to-IF isolation, and excellent
intermodulation performance over the full RF bandwidth.
The balanced mixer cores also provide extremely high input
linearity, allowing the device to be used in demanding
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wideband applications where in-band blocking signals may
otherwise result in the degradation of dynamic range. Blocker
noise figure performance is comparable to narrow-band passive
mixer designs. High linearity IF buffer amplifiers follow the
passive mixer cores, yielding typical power conversion gains of
7.5 dB, and can be used with a wide range of output
impedances. For low voltage applications, the ADL5811 is
capable of operation at voltages down to 3.6 V with
substantially reduced current. Two logic bits are provided to
power down (<1.5 mA) the circuit when desired.
All features of the ADL5811 are controlled via a 3-wire serial
port interface, resulting in optimum performance and
minimum external components.
The ADL5811 is fabricated using a BiCMOS high performance
IC process. The device is available in a 32-lead, 5mm × 5mm,
LFCSP package and operates over a −40°C to +85°C
temperature range. An evaluation board is also available.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Supply Voltage, VPOS
CLK, DATA, LE
IF Output Bias
RF Input Power
LO Input Power
Internal Power Dissipation
θJA (Exposed Paddle Soldered Down)
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Rating
5.5 V
5.5 V
6.0 V
20 dBm
13 dBm
1.1 W
25°C/W
150°C
−40°C to +85°C
−65°C to +150°C
ADL5811
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
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Rev. 0 | Page 5 of 28
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
100
MEAN: 7.5
SD: 0.12%
80
60
40
20
0
7.1 7.3 7.5 7.7
CONVERSION GAIN (dB)
Figure 28. Conversion Gain Distribution
100
MEAN: 27.5
SD: 0.36%
80
7.9
60
40
20
0
23.5 25.5 27.5 29.5
INPUT IP3 (dBm)
Figure 29. Input IP3 Distribution
100
MEAN: 11.68
SD: 0.36%
80
31.5
60
40
20
0
10.5 11.0 11.5 12.0
INPUT P1dB (dBm)
Figure 30. Input P1dB Distribution
12.5
ADL5811
500
TA = 25°C
400
RF = 900MHz
RF = 1900MHz
RF = 2500MHz
10
8
300 6
200 4
100 2
00
30 80 130 180 230 280 330 380 430
IF FREQUENCY (MHz)
Figure 31. IF Output Impedance (R Parallel C Equivalent)
0
TA = +25°C
–5
–10
–15
–20
–25
–30
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–35
–40
700 900 1100 1300 1500 1700 1900 2100 2300 2500 2700
RF FREQUENCY (MHz)
Figure 32. RF Port Return Loss, Fixed IF vs. RF Frequency
0
TA = 25°C
–3
–6
–9
–12
–15
–18
–21
–24
500 700 900 1100 1300 1500 1700 1900 2100 2300 2500
LO FREQUENCY (MHz)
Figure 33. LO Return Loss
Rev. 0 | Page 11 of 28
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