AD8347ARU Analog Devices Inc, AD8347ARU Datasheet - Page 2

• Manufacturer Part Number: AD8347ARU
• Description: Quadrature Dmod 65MHz 28-Pin TSSOP
• Manufacturer: Analog Devices Inc

Specifications of AD8347ARU

• Package: 28TSSOP
• Device Type: Demodulator
• Maximum I/q Frequency: 65(Typ) MHz
• Modulation Type: Quadrature
• Typical Noise Figure: 11 dB
• Maximum Conversion Gain: 39.5(Typ) dB
• Rohs Status: RoHS non-compliant
• Function: Demodulator
• Lo Frequency: 800MHz ~ 2.7GHz
• Rf Frequency: 800MHz ~ 2.7GHz
• P1db: -30dBm
• Gain: 39.5dB
• Noise Figure: 11dB
• Current - Supply: 80mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Package / Case: 28-TSSOP

AD8347
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 16
REVISION HISTORY
10/05—Rev. 0 to Rev. A
Updated Format..................................................................Universal
Change V
Changes to Figure 46...................................................................... 19
Changes to Figure 48 ..................................................................... 21
Changes to Figure 49 and Figure 50............................................. 22
Changes to Ordering Guide .......................................................... 27
10/01—Revision 0: Initial Version
ESD Caution.................................................................................. 5
RF Amp and Demodulator ......................................................... 8
Baseband Output Amplifiers .................................................... 11
RF Amp/Demod and Baseband Output Amplifiers .............. 12
Equivalent Circuits..................................................................... 14
RF Variable Gain Amplifiers (VGA)........................................ 16
Mixers .......................................................................................... 16
Baseband Variable Gain Amplifiers ......................................... 16
Output Amplifiers ...................................................................... 16
GIN
to V
VGIN
..........................................................Universal
Rev. A | Page 2 of 28
Applications..................................................................................... 18
Evaluation Board ............................................................................ 23
Outline Dimensions ....................................................................... 26
LO and Phase Splitters............................................................... 16
Output Level Detector ............................................................... 17
Bias ............................................................................................... 17
Basic Connections...................................................................... 18
RF Input and Matching ............................................................. 18
LO Drive Interface ..................................................................... 18
Operating the VGA.................................................................... 19
Mixer Output Level and Drive Capability .............................. 19
Operating the VGA in AGC Mode .......................................... 19
Changing the AGC Setpoint ..................................................... 20
Baseband Amplifiers.................................................................. 20
Driving Capacitive Loads.......................................................... 21
External Baseband Amplification ............................................ 21
Filter Design Considerations .................................................... 21
DC Offset Compensation.......................................................... 22
Ordering Guide .......................................................................... 26