AD8346ARU Analog Devices Inc, AD8346ARU Datasheet
AD8346ARU
Specifications of AD8346ARU
Available stocks
Related parts for AD8346ARU
AD8346ARU Summary of contents
Page 1
FEATURES High accuracy 1 degree rms quadrature error @ 1.9 GHz 0.2 dB I/Q amplitude balance @ 1.9 GHz Broad frequency range: 0.8 GHz to 2.5 GHz Sideband suppression: −46 dBc @ 0.8 GHz Sideband suppression: −36 dBc @ 1.9 ...
Page 2
AD8346 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Equivalent Circuits ........................................................................... 6 Typical Performance Characteristics ............................................. 7 Circuit Description......................................................................... 10 Overview...................................................................................... 10 LO Interface................................................................................. 10 V-to-I Converter......................................................................... 10 Mixers ...
Page 3
SPECIFICATIONS 25°C; LO frequency = 1900 MHz; LO level = –10 dBm; BB frequency = 100 kHz; BB inputs are dc-biased to 1 input S A level = 1.0 V p-p each ...
Page 4
AD8346 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage VPS1, VPS2 Input Power LOIP, LOIN (relative to 50 Ω) Min Input Voltage IBBP, IBBN, QBBP, QBBN Max Input Voltage IBBP, IBBN, QBBP, QBBN Internal Power Dissipation θJA Operating Temperature Range ...
Page 5
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 IBBP I Channel Baseband Positive Input Pin. Input should be dc-biased to approximately 1.2 V. Nominal characterized ac swing p-p (0.7 V ...
Page 6
AD8346 EQUIVALENT CIRCUITS VPS2 BUFFER 9kΩ INPUT 3kΩ ACTIVE LOADS Figure 3. Circuit A VPS1 LOIN LOIP Figure 4. Circuit B TO MIXER CORE PHASE SPLITTER CONTINUES Rev Page VPS1 75kΩ TO BIAS FOR 75kΩ ...
Page 7
TYPICAL PERFORMANCE CHARACTERISTICS – 25°C – 5.5V P –8 V –9 –10 – 2.7V P –12 –13 –14 –15 800 1000 1200 1400 1600 1800 LO FREQUENCY (MHz) Figure 7. Single Sideband (SSB) Output ...
Page 8
AD8346 –7 – 5.5V P –9 – –11 P – 2.7V P –13 –14 –15 –40 –30 –20 – TEMPERATURE (°C) Figure 13. SSB P vs. Temperature ...
Page 9
–38 –40 –42 –44 –40 –30 –20 – TEMPERATURE (°C) Figure 19. Sideband Suppression vs. Temperature 1900 MHz, I and Q ...
Page 10
AD8346 CIRCUIT DESCRIPTION OVERVIEW The AD8346 can be divided into the following sections: local oscillator (LO) interface, mixer, voltage-to-current (V-to-I) converter, differential-to-single-ended (D-to-S) converter, and bias. A detailed block diagram of the part is shown in Figure 25. The LO ...
Page 11
BASIC CONNECTIONS The basic connections for operating the AD8346 are shown in Figure 27. A single power supply of between 2.7 V and 5 applied to pins VPS1 and VPS2. A pair of ESD protection diodes are connected ...
Page 12
AD8346 INTERFACE TO AD9761 T DAC® X Figure 28 shows a dc-coupled current output DAC interface. The use of dual-integrated DACs, such as the AD9761 with specified ±0.02 dB and ±0.004 dB gain and offset matching characteristics, ensures minimum error ...
Page 13
AC-COUPLED INTERFACE An ac-coupled interface can also be implemented, as shown in Figure 29. This is an advantage because there is almost no voltage loss due to the biasing network, allowing the AD8346 inputs to be driven by the full ...
Page 14
AD8346 EVALUATION BOARD The schematic of the AD8346 evaluation board is shown in Figure 30. This is a 4-layer FR4 board; the two center layers are used as ground planes and the top and bottom layers are used for signal ...
Page 15
Figure 31. Layout of Evaluation Board Figure 32. Silkscreen of Evaluation Board Rev Page AD8346 ...
Page 16
AD8346 CHARACTERIZATION SETUPS SSB SETUP Two main setups were used to characterize this product. These setups are shown in Figure 33 and Figure 35. Figure 33 shows the setup used to evaluate the product as an SSB. The AD8346 motherboard ...
Page 17
CDMA SETUP For evaluating the AD8346 with CDMA waveforms, the setup shown in Figure 35 was used. This is essentially the same setup as that used for the single sideband characterization, except that the AFG2020 was replaced with the AWG2021 ...
Page 18
... ORDERING GUIDE Model Temperature Range AD8346ARU −40°C to +85°C AD8346ARU-REEL −40°C to +85°C AD8346ARU-REEL7 −40°C to +85°C 1 AD8346ARUZ-REEL −40°C to +85°C 1 AD8346ARUZ-REEL7 −40°C to +85°C AD8346-EVAL Pb-free part. 5.10 5.00 4. 4.50 6.40 4.40 BSC 4.30 ...
Page 19
NOTES Rev Page AD8346 ...
Page 20
AD8346 NOTES ©2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective companies. C05335–0–6/05(A) Rev Page ...