AD8340ACPZ-WP Analog Devices Inc, AD8340ACPZ-WP Datasheet

IC MOD VECT 700-1000MHZ 24-LFCSP

AD8340ACPZ-WP

Manufacturer Part Number
AD8340ACPZ-WP
Description
IC MOD VECT 700-1000MHZ 24-LFCSP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8340ACPZ-WP

Function
Vector, Modulator
Lo Frequency
700MHz ~ 1GHz
Rf Frequency
700MHz ~ 1GHz
P1db
11dBm
Noise Floor
-149dBm/Hz
Current - Supply
150mA
Voltage - Supply
4.75 V ~ 5.25 V
Test Frequency
880MHz
Package / Case
24-VFQFN, CSP Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Cartesian amplitude and phase modulation
700 MHz to 1.0 GHz frequency range
Continuous magnitude control of −2 dB to −32 dB
Continuous phase control of 0° to 360°
Output third-order intercept 24 dBm
Output 1 dB compression point 11 dBm
Output noise floor −149 dBm/Hz @ full gain
Adjustable modulation bandwidth up to 230 MHz
Fast output power disable
4.75 V to 5.25 V single-supply voltage
APPLICATIONS
RF PA linearization/RF predistortion
Amplitude and phase modulation
Variable attenuators and phase shifters
CDMA2000, GSM/EDGE linear power amplifiers
Smart antennas
GENERAL DESCRIPTION
The AD8340 vector modulator performs arbitrary amplitude
and phase modulation of an RF signal. Because the RF signal
path is linear, the original modulation is preserved. This part
can be used as a general-purpose RF modulator, a variable
attenuator/phase shifter, or a remodulator. The amplitude can
be controlled from a maximum of −2 dB to less than −32 dB,
and the phase can be shifted continuously over the entire 360°
range. For maximum gain, the AD8340 delivers an OP1dB
of 11 dBm, an OIP3 of 24 dBm, and an output noise floor of
−149 dBm/Hz, independent of phase. It operates over a fre-
quency range of 700 MHz to 1.0 GHz.
The baseband inputs in Cartesian I and Q format control the
amplitude and phase modulation imposed on the RF input
signal. Both I and Q inputs are dc-coupled with a ±500 mV
differential full-scale range. The maximum modulation band-
width is 230 MHz, which can be reduced by adding external
capacitors to limit the noise bandwidth on the control lines.
Rev. B
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.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Both the RF inputs and outputs can be used differentially or
single-ended and must be ac-coupled. The RF input and output
impedances are nominally 50 Ω over the operating frequency
range. The DSOP pin allows the output stage to be disabled
quickly to protect subsequent stages from overdrive. The
AD8340 operates off supply voltages from 4.75 V to 5.25 V
while consuming approximately 130 mA.
The AD8340 is fabricated using the Analog Devices, Inc.
proprietary, high performance 25 GHz SOI complementary
bipolar IC process. It is available in a 24-lead RoHS-compliant
LFCSP package and operates over a −40°C to +85°C tempera-
ture range. Evaluation boards are available.
RFIM
RFIP
FUNCTIONAL BLOCK DIAGRAM
CMOP
VPRF
©2004–2007 Analog Devices, Inc. All rights reserved.
700 MHz to 1000 MHz
RF Vector Modulator
90°
QBBP
IBBP
Figure 1.
IBBM
QBBM
DSOP
VPS2
AD8340
www.analog.com
RFOP
RFOM

Related parts for AD8340ACPZ-WP

AD8340ACPZ-WP Summary of contents

Page 1

FEATURES Cartesian amplitude and phase modulation 700 MHz to 1.0 GHz frequency range Continuous magnitude control of − −32 dB Continuous phase control of 0° to 360° Output third-order intercept 24 dBm Output 1 dB compression point 11 ...

Page 2

AD8340 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics ...

Page 3

SPECIFICATIONS 25° Ω 880 MHz, single-ended, ac-coupled source drive to RFIP through 5.6 nH series inductor, RFIM ac-coupled through 5.6 nH series inductor to common, differential-to-single-ended ...

Page 4

AD8340 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage VPRF, VPS2 DSOP IBBP, IBBM, QBBP, QBBM RFOP, RFOM RF Input Power at Maximum Gain (50 Ω) (RFIP or RFIM, Single-Ended Drive) Equivalent Voltage Internal Power Dissipation θ (with Pad Soldered ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic 1; 2 QFLP; QFLM 3; 4 QBBP; QBBM 5, 6, 14; 19, 24 VPS2; VPRF 7, 8, 11, 12; 20, 23 CMOP; CMRF 9; 10 RFOP; RFOM ...

Page 6

AD8340 TYPICAL PERFORMANCE CHARACTERISTICS 0 PHASE SETPOINT = 0° –5 –10 –15 PHASE SETPOINT = 270° –20 –25 –30 –35 PHASE SETPOINT = 180° –40 0.1 0 0.2 0.3 0.4 0.5 0.6 GAIN SETPOINT Figure 3. Gain Magnitude vs. Gain ...

Page 7

+5dBm IN –146 –147 –148 0dBm IN –149 –150 NO RF INPUT –151 –152 0.1 0 0.2 0.3 0.4 0.5 0.6 0.7 GAIN SETPOINT Figure 9. Output ...

Page 8

AD8340 TEMP = +85° 700 750 800 850 FREQUENCY (MHz) Figure 15. Output IP3 vs. Frequency and Temperature, Maximum Gain, I Only 0 –5 1V p-p BB INPUT –10 ...

Page 9

IMPEDANCE CIRCLE S22 PORT WITH TRANSFORMER SDD22 PORT DIFFERENTIAL Figure 21. Output Impedance Smith Chart (with Frequency Markers PHASE SETPOINT = 45° 2 ...

Page 10

AD8340 THEORY OF OPERATION The AD8340 is a linear RF vector modulator with Cartesian baseband controls. In the simplified block diagram shown in Figure 26, the RF signal propagates from the left to the right while baseband controls are placed ...

Page 11

I-Q ATTENUATORS AND BASEBAND AMPLIFIERS The proprietary linear-responding attenuator structure is an active solution with differential inputs and outputs that offer excellent linearity, low noise, and greater immunity from mis- matches than other variable attenuator methods. The gain, in linear ...

Page 12

AD8340 APPLICATIONS INFORMATION USING THE AD8340 The AD8340 is designed to operate Ω impedance system. Figure 30 illustrates where the RF input is driven in a single-ended fashion while the differential RF output is converted to a ...

Page 13

RF OUTPUT AND MATCHING The RF outputs of the AD8340, RFOP, and RFOM, are open collectors of a transimpedance amplifier that needs to be pulled up to the positive supply, preferably with RF chokes, as shown in Figure 31. The ...

Page 14

AD8340 INTERFACING TO HIGH SPEED DACs The AD977x family of dual DACs is well suited for driving the I and Q vector controls of the AD8340. While these inputs can in general be driven by any DAC, the differential outputs ...

Page 15

BS, 1X ADJ CHANNE L *RBW 30kHz *VBW 30kHz REF –12dBm *ATT 5dB *SWT 100ms OFFSET 0.5 dB –20 –30 –40 –50 –60 SWP –70 –80 –90 –100 2 –110 CENTER 880MHz 1MHz/DIV Figure 35. ...

Page 16

AD8340 EVALUATION BOARD The evaluation board circuit schematic for the AD8340 is shown in Figure 39. The evaluation board is configured to be driven from a single-ended 50 Ω source. Although the input of the AD8340 is differential, it may ...

Page 17

Table 4. Evaluation Board Configuration Options Components Description R7, R9, R11, R14, I Channel Baseband Interface. Resistor R7 and Resistor R9 can be R15, R19, R20, R21, installed to accommodate a baseband source that requires a C15, C19, W3, W4 ...

Page 18

AD8340 SCHEMATIC AND ARTWORK C7 R5 (OPEN) 0Ω 5.6nH 100pF RFIN L4 C5 5.6nH 100pF 0Ω (OPEN) IBBP IBBM C19 R9 R7 0.1µF (OPEN) (OPEN) R19 0Ω R21 R20 C15 0Ω 0Ω ...

Page 19

Figure 40. Component Side Layout Figure 41. Component Side Silkscreen Rev Page AD8340 ...

Page 20

... OUTLINE DIMENSIONS PIN 1 INDICATOR 1.00 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range 1, 2 AD8340ACPZ-WP −40°C to +85°C 1 AD8340ACPZ-REEL7 −40°C to +85°C 1 AD8340-EVALZ RoHS Compliant Part Waffle pack. ©2004–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...

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