ad8363acpz-wp Analog Devices, Inc., ad8363acpz-wp Datasheet

ad8363acpz-wp

Manufacturer Part Number

ad8363acpz-wp

Description

50 Hz To 6 Ghz 50 Db Trupwr Detector

Manufacturer

Analog Devices, Inc.

Datasheet

1.AD8363ACPZ-WP.pdf (14 pages)

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Preliminary Technical Data

FEATURES

Accurate RMS-to-DC conversion from 50 Hz to 6 GHz

Single ended input dynamic range of >50 dB

Waveform and modulation independent, such as

Linear-in-decibels output, scaled 50 mV/dB

Log conformance error of <0.3 dB

Temperature stability of <±0.5 dB

Voltage supply range of 4.5 V to 5.5 V

Operating temperature range of −40°C to +125°C

Power-down capability

APPLICATIONS

Power amplifier linearization/control loops

Transmitter power controls

Transmitter signal strength indication (TSSI)

RF instrumentation

GENERAL DESCRIPTION

The AD8363 is a true RMS responding power detector that has

more than 50 dB measurement range when driven with a

single-ended 50 Ω source. The device provides a solution in a

variety of high frequency communication systems, and in

instrumentation, requiring an accurate response to signal

power. The AD8363 is easy to use with its single-ended 50 Ω

input, only requiring a single 5 V supply, and a few capacitors.

The AD8363 can operate from arbitrarily low frequencies to 6

GHz and can accept inputs that have RMS values from less than

-50 dBm to at least 0 dBm, with large crest factors, exceeding

the requirements for accurate measurement of WiMAX,

WCDMA, and CDMA signals.

The AD8363 can determine the true power of a high frequency

signal having a complex low frequency modulation envelope, or

can be used as a simple low frequency RMS voltmeter. The

high-pass corner generated by its internal offset-nulling loop

can be lowered by a capacitor added on the CHPF pin.

Rev. PrB

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.

WiMAX/GSM/CDMA/WCDMA/TDMA

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

Used as a power measurement device, VOUT is connected to

VSET. The output is then proportional to the logarithm of the

RMS value of the input. In other words, the reading is

presented directly in decibels and is conveniently scaled 1 V per

decade, or 50 mV/dB; other slopes are easily arranged. In

controller mode, the voltage applied to VSET determines the

power level required at the input to null the deviation from the

set point. The output buffer can provide high load currents.

The AD8363 has 1.5 mW power consumption when powered

down by a logic high applied to pin 1, TCM2. It powers up

within about 30 μs to its nominal operating current of 60 mA at

25°C. The AD8363 is supplied in a 4 mm x 4 mm, 16-lead

LFCSP for operation over the temperature range of −40°C to

+125°C. An evaluation board is available.

50 dB TruPwr

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

50 Hz to 6 GHz

™

Detector

AD8363

www.analog.com

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ad8363acpz-wp Summary of contents

Page 1

... The AD8363 is supplied mm, 16-lead LFCSP for operation over the temperature range of −40°C to +125°C. An evaluation board is available. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 ©2008 Analog Devices, Inc. All rights reserved. ™ Detector AD8363 www.analog.com ...

Page 2

AD8363 SPECIFICATIONS Pins VPOS = 25° Error referred to best-fit line (linear regression), Table 1. Parameter Conditions OVERALL FUNCTION Maximum Input Frequency RF INPUT INTERFACE Pins INHI, INLO, ac-coupled ...

Page 3

Preliminary Technical Data Parameter Conditions 12 dB peak-to-rms ratio (WiMAX), over 40 dB dynamic range 14.0 dB peak-to-rms ratio (16C CDMA2K), over 40 dB dynamic range 256 QAM CF=8 Input Impedance Single-ended drive 2140 MHz TCM1=0.49V, TCM2=1.2V Output Voltage: High ...

Page 4

AD8363 Parameter Conditions Maximum Input Level, ±1.0 dB Minimum Input Level, ±1.0 dB Deviation vs. Temperature Deviation from output at 25°C -40°C < T -40°C < T Logarithmic Slope Logarithmic Intercept Deviation from CW Response 13 dB peak-to-rms ratio (WCDMA), ...

Page 5

Preliminary Technical Data ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage VPOS Input Power (Into Input of Device) Equivalent Voltage Internal Power Dissipation θ JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering 60 sec) ESD ...

Page 6

AD8363 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin Mnemonic No. 1 TCM2/PWDN 2 CHPF 3, 10 VPOS 4, 9 COMM 5 CLPF 6 VOUT 7 VSET 8 TEMP 11 VREF 12 VTGT 13 NCON 14 INHI ...

Page 7

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS Ω, Single ended input drive, VOUT tied to VSET (Blue), +85°C (red) 4 3.6 3.2 2.8 2.4 2 1.6 1.2 0.8 0.4 0 -60 -50 ...

Page 8

AD8363 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -60 -50 -40 Input Amplitude, INHI (dBm) Figure 9. VOUT Voltage and Log Conformance vs. Input Amplitude at 1.90 GHz, Typical Device, TCM1 = 0.51 V, TCM2 = 0.51 V, Sine Wave, ...

Page 9

Preliminary Technical Data 4 3.6 3.2 2.8 2.4 2 1.6 1.2 0.8 0.4 0 -55 -50 -45 -40 -35 -30 -25 -20 Input Amplitude, INHI (dBm) Figure 15. VOUT Voltage and Log Conformance vs. Input Amplitude at 2.6 GHz, Typical ...

Page 10

AD8363 4 3.6 3.2 2.8 2.4 2 1.6 1.2 0.8 0.4 0 -55 -50 -45 -40 -35 -30 Input Amplitude, INHI (dBm) Figure 21. VOUT Voltage and Log Conformance vs. Input Amplitude at 5.8 GHz, Typical Device, TCM1 = 0.88 ...

Page 11

Preliminary Technical Data Table 4. Pin Function Descriptions Component Function/Notes C6, C10, C11, Input: C12 The AD8363 was designed to be driven single ended. At frequencies below 2.6 GHz, more dynamic range can be achieved by driving Pin 14 (INHI). ...

Page 12

AD8363 EVALUATION BOARD R11 R040 AGND C AGND C C10 C040 2 C040 2 C6 TESTLOO ORANGE OPE N R040 2 AGND C AGND C TC2_PW D N TESTLOO ...

Page 13

Preliminary Technical Data Fig 28 Evaluation Board Layout, Top Fig 29 Evaluation Board Assembly, Top ASSEMBLY DRAWINGS Fig 30 Evaluation Board Layout, Bottom Fig 31 Evaluation Board Assembly, Bottom Rev. PrB | Page AD8363 ...

Page 14

... AD8363 OUTLINE DIMENSIONS INDICATOR ORDERING GUIDE Model Temperature Range 40°C to +125°C AD8363ACPZ-R7 AD8363ACPZ-R2 40°C to +125°C AD8363ACPZ-WP 40°C to +125°C AD8363-EVALZ 4.00 BSC SQ 0.60 MAX 12 0.65 BSC PIN 1 TOP 3.75 VIEW BSC SQ 0.75 9 0.60 0.50 0.80 MAX 12° MAX 0.65 TYP 0.05 MAX 1.00 0.02 NOM 0.85 0.30 0.20 REF 0.80 0.23 COPLANARITY SEATING 0.08 0.18 PLANE COMPLIANT TO JEDEC STANDARDS MO-220-VGGC ...

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