adl5513 Analog Devices, Inc., adl5513 Datasheet

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adl5513

Manufacturer Part Number
adl5513
Description
1 Mhz To 4 Ghz, 80 Db Logarithmic Detector/controller
Manufacturer
Analog Devices, Inc.
Datasheet

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Preliminary Technical Data
FEATURES
Wide bandwidth: 1 MHz to 4 GHz
80 dB dynamic range (±3 dB)
Stability over temperature: < ±0.5 dB
Low noise measurement/controller output (VOUT)
Pulse response time: 10 ns
Small footprint package: 3 mm x 3 mm LFCSP
Supply operation: 2.7 to 5.5 V at 30 mA
Fabricated using high speed SiGe process
APPLICATIONS
RF transmitter PA setpoint control and level monitoring
Power monitoring in radiolink transmitters
RSSI measurement in base stations, WLAN, WiMAX, radar
GENERAL DESCRIPTION
The ADL5513 is a demodulating logarithmic amplifier, capable
of accurately converting an RF input signal to a corresponding
decibel-scaled output. It employs the progressive compression
technique over a cascaded amplifier chain, each stage of which
is equipped with a detector cell. The device can be used in
either measurement or controller modes. The ADL5513
maintains accurate log conformance for signals greater than 4
GHz. The input dynamic range is typically 80 dB (re: 50 Ω)
with error less than ±3 dB. The ADL5513 has 10 ns response
time which enables RF burst detection to a pulse rate of beyond
50 MHz. The device provides unprecedented logarithmic
intercept stability vs. ambient temperature conditions. A supply
of 2.7 V to 5.5 V is required to power the device. Current
consumption is less than 30 mA, and decreases to TBD μA
when the device is disabled.
The ADL5513 can be configured to provide a control voltage to
a power amplifier or a measurement output from the VOUT
Rev. PrA 6/08
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.
Logarithmic Detector/Controller
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
V P OS
V P OS
pin. Because the output can be used for controller applications,
special attention has been paid to minimize wideband noise. In
this mode, the setpoint control voltage is applied to the VSET
pin.
The feedback loop through an RF amplifier is closed via VOUT,
the output of which regulates the amplifier’s output to a
magnitude corresponding to V
to (V
controller applications. As a measurement device, VOUT is
externally connected to VSET to produce an output voltage
V
The logarithmic slope is 20 mV/dB, determined by the VSET
interface. The intercept is -95 dBm (re: 50 Ω, CW input, 900
MHz) using the INHI input. These parameters are very stable
against supply and temperature variations.
IN LO
IN HI
OUT
POS
that increases linear-in-dB with RF input signal amplitude.
1
2
3
4
DET
− 0.1 V) output capability at the VOUT pin, suitable for
FUNCTIONAL BLOCK DIAGRAM
16
5
DET
CO NT RO L
S L O P E
1 MHz to 4 GHz, 80 dB
AD L5513
©2008 Analog Devices, Inc. All rights reserved.
15
6
DET
Figure 1.
RE FE RENC E
BA N D G AP
SET
DET
. The ADL5513 provides 0 V
14
7
DET
Σ
G AIN
BIAS
ADL5513
13
8
I
I
www.analog.com
V
V
12
11
10
9
VO UT
V S E T
COMM
TADJ

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adl5513 Summary of contents

Page 1

... GHz. The input dynamic range is typically 80 dB (re: 50 Ω) with error less than ±3 dB. The ADL5513 has 10 ns response time which enables RF burst detection to a pulse rate of beyond 50 MHz. The device provides unprecedented logarithmic intercept stability vs ...

Page 2

... ADL5513 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 6 REVISION HISTORY Preliminary Technical Data   ESD Caution...................................................................................6   Pin Configuration and Function Descriptions ..............................7   Typical Performance Characteristics ..............................................8   Evaluation Board Configuration Options ................................... 10   Outline Dimensions ....................................................................... 12   ...

Page 3

... P = -50 dBm A IN < +125° -10 dBm A IN < +125° − 30 dBm A IN < +125° -50 dBm A IN Rev. PrA | Page ADL5513 Error referred to best-fit line (linear Min Typ Max Unit 0.001 4 GHz 1.578 V 0.589 ...

Page 4

... ADL5513 Parameter Conditions 1900 MHz Output Voltage: High Power -10 dBm IN Output Voltage: Low Power -60 dBm IN ±3.0 dB Dynamic Range CW input, T ±1.0 dB Dynamic Range CW input, T ±0.5 dB Dynamic Range CW input, T Maximum Input Level, ±1.0 dB Minimum Input Level, ±1.0 dB Deviation vs. Temperature Deviation from output at 25°C -40° ...

Page 5

... Typ 1.6 0 -66 ±0.64 ±0.64 ±0.62 ±0.856 ±0.926 ±0.937 21 -90.57 TBD TBD TBD TBD = LPF = LPF 2 TBD VPOS − 0.7 V 143 100 ADL5513 Max Unit mV/dB dBm Ω/ 5 μ ...

Page 6

... ADL5513 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage: V POS V Voltage SET Input Power (Single-Ended, Re: 50 Ω) Internal Power Dissipation θ JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering 60 sec) ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection ...

Page 7

... In controller mode, the capacitance on this node sets the response time of the error amplifier/integrator. Exposed Internally connected to COMM; solder to a low impedance ground plane. Paddle PIN 1 INDICATOR 1 12 VOUT VPOS INHI 2 11 VSET ADL5513 INLO 3 10 COMM TOP VIEW (Not to Scale) VPOS 4 9 TADJ Figure 2. Rev. PrA | Page ADL5513 ...

Page 8

... ADL5513 TYPICAL PERFORMANCE CHARACTERISTICS +25°C, −40°C, +85°C; +125°C, unless otherwise noted. Black: +25°C, Blue: −40°C; Red: +85°C, Orange: +125°C. Error is POS A calculated by using the best-fit line between P 2.6 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 -70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 ...

Page 9

... Figure 14. V OUT Rev. PrA | Page ADL5513 - Pin (dBm) and Log Conformance vs. Input Amplitude at 2140 MHz 0.925 V TADJ - Pin (dBm) and Log Conformance vs. Input Amplitude at 2600 MHz 0.9 V TADJ ...

Page 10

... R4, R5, R10 Output Interface—Controller Mode. In this mode, R4 must be open. In controller mode, the ADL5513 can control the gain of an external component. A setpoint voltage is applied to Pin VSET, the value of which corresponds to the desired RF input signal level applied to the ADL5513 RF input. A sample of the RF output signal from this variable gain component is selected, typically via a directional coupler, and applied to ADL5513 RF input ...

Page 11

... Z1 R6 open R12 0 ohms R7 0 ohms C6 VPOS 0.1 uF Figure 15. Evaluation Board Schematic Rev. PrA | Page open R3 VOUT ohms open open R10 0 ohms VSET VPOS TADJ R8 open TADJ R9 open EXT_ PWDN - TADJ Figure 17. Component Side Silkscreen ADL5513 ...

Page 12

... ADL5513-ACPZ-R2 −40°C to +125°C 12 ADL5513-ACPZ-WP −40°C to +125°C 1 ADL5513-EVALZ RoHS Compliant Part waffle pack © 2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR07514-0-6/08(PrA) ...

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