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ADL5386 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADL5386
Beschreibung 50 MHz to 2200 MHz Quadrature Modulator
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 30 Seiten
ADL5386 Datasheet, Funktion
50 MHz to 2200 MHz Quadrature Modulator
with Integrated Detector and VVA
ADL5386
FEATURES
Output frequency range: 50 MHz to 2200 MHz
1 dB output compression: 11 dBm @ 350 MHz
Noise floor: −160 dBm/Hz @ 350 MHz
Sideband suppression: −46 dBc @ 350 MHz
Carrier feedthrough: −38 dBm @ 350 MHz
30 dB of linear AGC dynamic range @ 350 MHz
Single supply: 4.75 V to 5.5 V
40-lead, Pb-free LFCSP_VQ with exposed paddle
APPLICATIONS
Radio-link infrastructures
Cable modem termination systems
Wireless/cellular infrastructure systems
Wireless local loops
WiMAX/broadband wireless access systems
GENERAL DESCRIPTION
The ADL5386 is a quadrature modulator with unmatched
integration levels for low intermediate frequency (IF) and radio
frequency (RF) transmitters within broadband wireless access
systems, microwave radio links, cable modem termination
systems, and cellular infrastructure equipment. The ADL5386
operates over a frequency range of 50 MHz to 2200 MHz. Its
excellent phase accuracy and amplitude balance supports high data
rate, complex modulation for next-generation communication
infrastructure equipment.
In addition, the ADL5386 incorporates a standalone
logarithmic power detector, as well as a voltage variable
attenuator (VVA). The attenuator has its own separate input and
output pins for easy cascading with filters and buffer amplifiers.
The wide dynamic range of the power detector and VVA provides
flexibility in the choice of the signal monitoring point in the
transmitter system.
The wide baseband input bandwidth of 700 MHz allows for
either baseband drive or a drive from a complex IF signal.
Typical applications are in IF or direct-to-RF radio-link
transmitters, cable modem termination systems, broadband
wireless access systems, and cellular infrastructure equipment.
The ADL5386 takes 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 (LO) input signal at twice the frequency
as the desired output. The output amplifier is designed to drive
a 50 Ω load.
The ADL5386 consists of two die, one fabricated using the
Analog Devices, Inc., advanced SiGe bipolar process, and the other
using an external GaAs process. The ADL5386 is packaged in a
40-lead, Pb-free LFCSP_VQ with an exposed paddle. Performance
is specified over the −40°C to +85°C range. A Pb-free evaluation
board is also available.
IBBP 25
IBBN 26
LOIP 33
LOIN 34
QBBN 29
QBBP 30
FUNCTIONAL BLOCK DIAGRAM
VPOS
38 37 36 35
VPOS ENBL
23 22 21
24
MODOUT ATTI
10 12
NC
9
QUADRATURE
PHASE
SPLITTER
IQ MOD
BIAS
ADL5386
15dB
17 ATTCM
14 ATTCM
20 ATTO
6 VREF
IV
7 VDET/VCTL
TEMPERATURE
SENSOR
LOG
DETECTOR
4 CLPF
I V 3 VSET
8
TEMP
12
INLO INHI
39 5 11 13 15 16 18 19 27 28 31 32 40
TADJ
COMM
Figure 1.
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
©2009 Analog Devices, Inc. All rights reserved.






ADL5386 Datasheet, Funktion
Parameter
Output Frequency = 1900 MHz
Output Power
Modulator Voltage Gain
Output P1dB
Output Return Loss
Carrier Leakage
Sideband Suppression
Quadrature Error
I/Q Amplitude Balance
Second Harmonic
Third Harmonic
Output IP2
Output IP3
Noise Floor
Output Frequency = 2150 MHz
Output Power
Modulator Voltage Gain
Output P1dB
Output Return Loss
Carrier Leakage
Sideband Suppression
Quadrature Error
I/Q Amplitude Balance
Second Harmonic
Third Harmonic
Output IP2
Output IP3
Noise Floor
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)
Conditions
Min Typ
Single (lower) sideband output
Unadjusted (nominal drive level)
At 85°C after optimization at 25°C
At −40°C after optimization at +25°C
Unadjusted (nominal drive level)
At 85°C after optimization at 25°C
At −40°C after optimization at +25°C
(fLO − (2 × fBB)), POUT = 5 dBm
(fLO + (3 × fBB)), POUT = 5 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
3.2
−3.7
9.2
−13
−35
−53
−53
−30
−45
−45
−3
0.02
−59
−45
55
23
−160
−156
Single (lower) sideband output
Unadjusted (nominal drive level)
At 85°C after optimization at 25°C
At −40°C after optimization at +25°C
Unadjusted (nominal drive level)
At 85°C after optimization at 25°C
At −40°C after optimization at +25°C
(fLO − (2 × fBB)), POUT = 5 dBm
(fLO + (3 × fBB)), POUT = 5 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
Characterization performed at typical level (<140 MHz)
350 MHz, LOIN ac-coupled to ground
Pin IBBP, Pin IBBN, Pin QBBP, Pin QBBN
fLO = 2 × 900 MHz, POUT ≈ −4 dBm
fLO = 2 × 900 MHz, POUT ≈ −4 dBm
2.5
−4.4
8.4
−11
−35
−48
−46
−34
−45
−45
−1.2
0.03
−56
−48
53
21
−160
−155
−13 −7
−7 −7
50
−7
500
−60
50
700
ADL5386
Max Unit
dBm
dB
dBm
dBm
dBm
dBm
dBm
dBc
dBc
dBc
Degrees
dB
dBc
dBc
dBm
dBm
dBm/Hz
dBm/Hz
dBm
dB
dBm
dB
dBm
dBm
dBm
dBc
dBc
dBc
Degrees
dB
dBc
dBc
dBm
dBm
dBm/Hz
dBm/Hz
+2 dBm
+2 dBm
Ω
dB
mV
μA
MHz
MHz
Rev. 0 | Page 5 of 36

6 Page









ADL5386 pdf, datenblatt
ADL5386
Pin No.
24
25, 26, 29, 30
33
34
39
41 (EPAD)
Mnemonic
ENBL
IBBP, IBBN,
QBBN, QBBP
LOIP
LOIN
TADJ
Exposed
Pad (EPAD)
Description
IQ Modulator Enable. The IQ modulator is enabled by connecting this pin to VPOS and is disabled by connecting
ENBL to ground.
Differential In-Phase and Quadrature Baseband Inputs. These high impedance inputs should be dc-biased to 0.5 V.
Nominal characterized ac signal swing is 700 mV p-p on each pin, resulting in a differential drive of
1.4 V p-p on each input pair. These inputs are not self-biased and have to be externally biased.
Local Oscillator Input. The local oscillator signal, at two times the output frequency, should be ac-coupled into
this pin.
Local Oscillator Common. This pin should be ac-coupled to ground.
Temperature Compensation Adjustment Pin and Detector Enable/Disable. This pin is primarily used to
provide temperature compensation to the on-chip log amp based AGC circuit. The correct compensation
current is set by connecting a ground-referenced resistor to this pin. A value of 22.1 kΩ is recommended
for the frequencies over which the ADL5386 is specified. The TADJ pin can also be used to power down the
detector section of the ADL5386 by connecting it to VPOS. The detector must be disabled when the
modulator/VVA is operating in open loop mode.
Connect the exposed pad to ground via a low impedance path.
Rev. 0 | Page 11 of 36

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