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PDF ADL5385 Data sheet ( Hoja de datos )
| Número de pieza | ADL5385 | |
| Descripción | Quadrature Modulator | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
Output frequency range: 50 MHz to 2200 MHz
1 dB output compression: 11 dBm @ 350 MHz
Noise floor: –159 dBm/Hz @ 350 MHz
Sideband suppression: −50 dBc @ 350 MHz
Carrier feedthrough: −46 dBm @ 350 MHz
Single supply: 4.75 V to 5.5 V
24-lead, Pb-free LFCSP_VQ with exposed paddle
APPLICATIONS
Radio-link infrastructure
Cable modem termination systems
Wireless infrastructure systems
Wireless local loop
WiMAX/broadband wireless access systems
PRODUCT DESCRIPTION
The ADL5385 is a silicon, monolithic, quadrature modulator
designed for use from 50 MHz to 2200 MHz. Its excellent phase
accuracy and amplitude balance enable both high performance
intermediate frequency (IF) and direct radio frequency (RF)
modulation for communication systems.
The AD5385 takes the signals from two differential baseband
inputs and modulates them onto two carriers in quadrature
with each other. The two internal carriers are derived from
a single-ended, external local oscillator input signal at twice the
frequency as the desired carrier output. The two modulated
signals are summed together in a differential-to-single-ended
amplifier designed to drive 50 Ω loads.
50 MHz to 2200 MHz
Quadrature Modulator
ADL5385
FUNCTIONAL BLOCK DIAGRAM
ENBL
IBBP
BIAS
TEMPERATURE
SENSOR
TEMP
IBBN
LOIP
LOIN
DIVIDE-BY-2
QUADRATURE
PHASE
SPLITTER
VOUT
QBBP
QBBN
Figure 1.
The ADL5385 can be used as either an IF or a direct-to-RF
modulator in digital communication systems. The wide
baseband input bandwidth allows for either baseband drive or
drive from a complex IF. Typical applications are in radio-link
transmitters, cable modem termination systems, and broadband
wireless access systems.
The ADL5385 is fabricated using the Analog Devices, Inc.,
advanced silicon germanium bipolar process and is packaged in
a 24-lead, Pb-free LFCSP_VQ with exposed paddle.
Performance is specified over –40°C to +85°C. A Pb-free
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
©2006 Analog Devices, Inc. All rights reserved.
1 page  
Parameter
Second Baseband Harmonic
Third Baseband Harmonic
Output IP2
Output IP3
Quadrature Phase Error
I/Q Amplitude Balance
Noise Floor
Output Return Loss
OUTPUT FREQUENCY =
2150 MHz
Output Power
Output P1 dB
Carrier Feedthrough
Sideband Suppression
Conditions
@ +85°C after optimization at +25°C
@ −40°C after optimization at +25°C
(FLO − (2 × FBB)), POUT = 3 dBm
(FLO + (3 × FBB)), POUT = 3 dBm
F1 = +3.5 MHz, F2 = +4.5 MHz, POUT = −3 dBm per tone
F1 = +3.5 MHz, F2 = +4.5 MHz, POUT = −3 dBm per tone
20 MHz offset from LO, all BB inputs at a bias of 500 mV
20 MHz offset from LO, output power = −5 dBm
Single (lower) sideband output
Unadjusted (nominal drive level)
@ +85°C after optimization at +25°C
@ −40°C after optimization at +25°C
Unadjusted (nominal drive level)
Second Baseband Harmonic
Third Baseband Harmonic
Output IP2
Output IP3
Quadrature Phase Error
I/Q Amplitude Balance
Noise Floor
Output Return Loss
LO INPUTS
LO Drive Level
Input Impedance
Input Return Loss
BASEBAND INPUTS
I and Q Input Bias Level
Input Bias Current
Bandwidth (0.1 dB)
Bandwidth (3 dB)
ENABLE INPUT
Turn-On Settling Time
Turn-Off Settling Time
ENBL High Level (Logic 1)
ENBL Low Level (Logic 0)
TEMPERATURE OUTPUT
Output Voltage
Temperature Slope
Output Impedance
POWER SUPPLIES
Voltage
Supply Current
(FLO − (2 × FBB)), POUT = 2.6 dBm
(FLO + (3 × FBB)), POUT = 2.6 dBm
F1 = +3.5 MHz, F2 = +4.5 MHz, POUT = −3 dBm per tone
F1 = +3.5 MHz, F2 = +4.5 MHz, POUT = −3 dBm per tone
20 MHz offset from LO, all BB inputs at a bias of 500 mV
20 MHz offset from LO, output power = −5 dBm
Pin LOIP and Pin LOIN
Characterization performed at typical level
350 MHz, LOIN ac-coupled to ground
Pin IBBP, Pin IBBN, Pin QBBP, Pin QBBN
RF = 500 MHz, output power = 0 dBm
RF = 500 MHz, output power = 0 dBm
ENBL
ENBL = high (for output to within 0.5 dB of final value)
ENBL = low (at supply current falling below 20 mA)
TEMP
TA = 27.15°C, 300K, RL = 1 MΩ (after full warmup)
−40°C ≤ TA ≤ +85°C, RL = 1 MΩ
Pin VPS1 and Pin VPS2
ENBL = high
ENBL = low
Rev. 0 | Page 5 of 24
ADL5385
Min Typ Max Unit
−43 dBc
−47 dBc
−58 dBc
−47 dBc
57 dBm
22 dBm
2.6 degrees
0.003
dB
−160
dBm/Hz
−156
dBm/Hz
−20 dB
2.6 dBm
8 dBm
−36 dBm
−47 dBm
−48 dBm
−37 dBc
−56
−45
54
21
1.5
< 0.05
−160
−156
−15
dBc
dBc
dBm
dBm
degrees
dB
dBm/Hz
dBm/Hz
dB
−10
–7 +5
dBm
50 Ω
−20 dB
500
−70
80
>500
mV
μA
MHz
MHz
1.0 μs
1.4 μs
1.5 V
0.4 V
1.56 V
4.6 mV/°C
1.0 kΩ
4.75 5.5 V
215 240 mA
80 μA
5 Page 
20
18
16
14
12
10
8
6
4
2
0
–156.7 –156.6 –156.5 –156.4 –156.3 –156.2 –156.1 –156.0 –155.9
dBm/Hz AT 20MHz OFFSET FROM LO FREQUENCY
Figure 21. 20 MHz Offset Noise Floor Distribution,
Output Frequency = 350 MHz, POUT = −5 dBm, QPSK Carrier,
Symbol Rate = 3.84 MSPS
20
18
16
14
12
10
8
6
4
2
0
–155.2 –155.1 –155.0 –154.9 –154.8 –154.7 –154.6 –154.5 –154.4
dBm/Hz AT 12MHz OFFSET FROM LO FREQUENCY
Figure 22. 12 MHz Offset Noise Floor Distribution,
Output Frequency = 860 MHz, POUT = −5 dBm, 64 QAM Carrier,
Symbol Rate = 5 MSPS
0
–5
–10
–15
–20
–25
100 530 960 1390 1820 2250 2680 3110 3540 3970 4400
LOIP FREQUENCY (MHz)
Figure 23. LO Port Input Return Loss vs. Frequency
ADL5385
90
120 60
150
180
210
S11 OF LOIP
S22 OF OUTPUT
2200MHz
50MHz
100MHz
4400MHz
30
0
330
240 300
270
Figure 24. Output Impedance and LO Input Impedance vs. Frequency
0.300
0.275
VVVSSS
=
=
=
5.5V
5V
4.75V
0.250
0.225
0.200
0.175
0.150
–40
25
85
TEMPERATURE (°C)
Figure 25. Power Supply Current vs. Temperature and Supply Voltage
Rev. 0 | Page 11 of 24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet ADL5385.PDF ] | |
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