ANALOG DEVICES ADL5500 Service Manual

100 MHz to 6 GHz

FEATURES

True rms response Excellent temperature stability ±0.1 dB accuracy vs. temperature over top 8 dB of input range Up to 30 dB input dynamic range at 3.9 GHz 50 Ω input impedance 1250 mV rms, +15 dBm, maximum input Single-supply operation: 2.7 V to 5.5 V Low power: 3 mW at 3 V supply RoHS compliant

APPLICATIONS

Measurement of CDMA2000, W-CDMA, and QPSK-/QAM-

based OFDM, and other complex modulation waveforms

RF transmitter or receiver power measurement

GENERAL DESCRIPTION

The ADL5500 is a mean-responding power detector for use in high frequency receiver and transmitter signal chains from 100 MHz to 6 GHz. It is easy to apply, requiring only a single supply between 2.7 V and 5.5 V and a power supply decoupling capacitor. The input is internally ac-coupled and has a nominal input impedance of 50 Ω. The output is a linear-responding dc voltage with a conversion gain of 6.4 V/V rms at 900 MHz. The on-chip, 1 kΩ series resistance at the output combined with an external shunt capacitor creates a low-pass filter response that reduces the residual ripple in the dc output voltage.

TruPwr™ Detector

ADL5500

5

1

OUTPUT (V)

0.1

0.03 –25 15

–20–15–10–50 510

INPUT (dBm)

Figure 1. Output vs. Input Level, Supply 3 V, Frequency 1.9 GHz

The ADL5500 offers excellent temperature stability with near 0 dB measurement error across temperature. The high accuracy range, centered around +3 dBm at 900 MHz, offers ±0.1 dB error from −40°C to +85°C over an 8.5 dB range. The ADL5500 reduces calibration requirements with low drift across a 30 dB range over temperature and process variations.

The ADL5500 operates from −40°C to +85°C and is available in a 4-ball, 1.0 mm × 1.0 mm wafer-level chip scale package. It is fabricated on a proprietary high f

silicon bipolar process.

T

05546-001

The ADL5500 is intended for true power measurement of simple and complex waveforms. The device is particularly useful for measuring high crest factor (high peak-to-rms ratio) signals, such as CDMA2000, W-CDMA, and QPSK/QAMbased OFDM waveforms.

FUNCTIONAL BLOCK DIAGRAM

ADL5500

i

2

RFIN

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her 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.

x

TRANSCONDUCTANCE CELLS

i

2

x

1kΩ

VPOS

VRMS

COMM

05546-002

INTERNAL FILTER CAPACITOR

ERROR AMP

BUFFER

Figure 2.

ADL5500

REVISION HISTORY

2/06—Rev 0 to Rev. A

Changes to Features.......................................................................... 1

Changes to Table 2............................................................................ 7

Changes to Figure 5.......................................................................... 9

Changes to Figure 28 and Figure 31............................................. 13

Changes to Figure 35 Caption....................................................... 15

Changes to Power Consumption and Power-On/-Off

Response Section ............................................................................ 16

Changes to Figure 48...................................................................... 20

Changes to Ordering Guide.......................................................... 22

7/05—Revision 0: Initial Version

Rev. A | Page 2 of 24

ADL5500

SPECIFICATIONS

TA = 25°C, VS = 3.0 V, C

Table 1.

Parameter Condition Min Typ Max Unit

FREQUENCY RANGE Input RFIN 100 6000 MHz RMS CONVERSION (f = 100 MHz) Input RFIN to output VRMS

Input Impedance 94||3 Ω||pF Input Return Loss 10 dB Dynamic Range

±0.1 dB Error ±0.25 dB Error

1

2

3

V ±1 dB Error

3

V ±2 dB Error

3

V Maximum Input Level

Minimum Input Level Conversion Gain VOUT = (Gain × VIN) + Intercept 6.1 V/V rms

V Output Intercept

4

V Output Voltage—High Power In PIN = +5 dBm, 400 mV rms 2.43 V Output Voltage—Low Power In PIN = −21 dBm, 20 mV rms 0.14 V Temperature Sensitivity PIN = −5 dBm

RMS CONVERSION (f = 450 MHz) Input RFIN to output VRMS

Input Impedance 75||1.4 Ω||pF Input Return Loss 12.5 dB Dynamic Range

±0.1 dB Error ±0.25 dB Error

1

2

3

V ±1 dB Error

3

V ±2 dB Error

3

V Maximum Input Level

Minimum Input Level Conversion Gain VOUT = (Gain × VIN) + Intercept 6.9 V/V rms

Output Intercept

4

Output Voltage—High Power In PIN = +5 dBm, 400 mV rms 2.8 V Output Voltage—Low Power In PIN = −21 dBm, 20 mV rms 0.16 V Temperature Sensitivity PIN = −5 dBm

= 10 nF, light condition ≤ 600 LUX, unless otherwise noted.

FLT

CW input, −40°C < TA < +85°C Delta from 25°C, VS = 5 V 5 dB VS = 3 V 17.5 dB

= 5 V 20 dB

S

VS = 3 V 25 dB

= 5 V 29 dB

S

VS = 3 V 28.5 dB

= 5 V 33 dB

S

±0.25 dB error ±1 dB error

= 5 V 4.6 7.2 V/V rms

S

3

0.03 V = 5 V −20 +100 mV

S

25°C ≤ T

−40°C ≤ T

≤ 85°C

A

≤ +25°C

A

CW input, −40°C < TA < +85°C Delta from 25°C, VS = 5 V 8 dB VS = 3 V 19 dB

= 5 V 24 dB

S

VS = 3 V 24.5 dB

= 5 V 29 dB

S

VS = 3 V 27.5 dB

= 5 V 33 dB

S

±0.25 dB error ±1 dB error

3

0.03 V

25°C ≤ T

−40°C ≤ T

≤ 85°C

A

≤ +25°C

A

6 dBm

−18.5 dBm

0.0032 dB/°C

−0.0042 dB/°C

5 dBm

−19.5 dBm

0.0020 dB/°C

−0.0023 dB/°C

Rev. A | Page 3 of 24

ADL5500

Parameter Condition Min Typ Max Unit

RMS CONVERSION (f = 900 MHz) Input RFIN to output VRMS

Input Impedance 62||1.1 Ω||pF Input Return Loss 13 dB Dynamic Range

±0.1 dB Error ±0.25 dB Error V ±1 dB Error V

±2 dB Error V Maximum Input Level

Minimum Input Level Conversion Gain VOUT = (Gain × VIN) + Intercept 6.4 V/V rms

Output Intercept Output Voltage—High Power In PIN = +5 dBm, 400 mV rms 2.61 V Output Voltage—Low Power In PIN = −21 dBm, 20 mV rms 0.15 V Temperature Sensitivity PIN = −5 dBm

RMS CONVERSION (f = 1900 MHz) Input RFIN to output VRMS

Input Impedance 43||0.9 Ω||pF Input Return Loss 11.5 dB Dynamic Range

±0.1 dB Error

±0.25 dB Error

V

±1 dB Error

V

±2 dB Error V Maximum Input Level

Minimum Input Level Conversion Gain VOUT = (Gain × VIN) + Intercept 5.0 V/V rms

Output Intercept Output Voltage—High Power In PIN = +5 dBm, 400 mV rms 2.02 V Output Voltage—Low Power In PIN = −21 dBm, 20 mV rms 0.11 V Temperature Sensitivity PIN = −5 dBm

1

2

3

4

1

2

3

4

CW input, −40°C < TA < +85°C Delta from 25°C, VS = 5 V 8.5 dB VS = 3 V 19.5 dB

= 5 V 23 dB

S

VS = 3 V 24.5 dB

= 5 V 29 dB

S

VS = 3 V 28 dB

= 5 V 32 dB

S

±0.25 dB error ±1 dB error

3

6 dBm

−19 dBm

0.04 V

25°C ≤ T

−40°C ≤ T

≤ +85°C

A

≤ +25°C

A

0.0018 dB/°C

−0.0023 dB/°C

CW input, −40°C < TA < +85°C Delta from 25°C, VS = 5 V 7 dB VS = 3 V 20 dB

= 5 V 23 dB

S

VS = 3 V 26 dB

= 5 V 30 dB

S

VS = 3 V 31.5 dB

= 5 V 33 dB

S

±0.25 dB error ±1 dB error

3

8 dBm

−19.5 dBm

0.02 V

25°C ≤ T

−40°C ≤ T

≤ 85°C

A

≤ +25°C

A

0.0017 dB/°C

−0.0031 dB/°C

Rev. A | Page 4 of 24

ADL5500

Parameter Condition Min Typ Max Unit

RMS CONVERSION (f = 2350 MHz) Input RFIN to output VRMS

Input Impedance 37||0.9 Ω||pF Input Return Loss 9 dB Dynamic Range

±0.1 dB Error ±0.25 dB Error V ±1 dB Error V

±2 dB Error V Maximum Input Level

Minimum Input Level Conversion Gain VOUT = (Gain × VIN) + Intercept 4.5 V/V rms

Output Intercept Output Voltage—High Power In PIN = +5 dBm, 400 mV rms 1.82 V Output Voltage—Low Power In PIN = −21 dBm, 20 mV rms 0.11 V Temperature Sensitivity PIN = −5 dBm

RMS CONVERSION (f = 2700 MHz) Input RFIN to output VRMS

Input Impedance 34||0.8 Ω||pF Input Return Loss 8.5 dB Dynamic Range

±0.1 dB Error

±0.25 dB Error

V

±1 dB Error

V

±2 dB Error V Maximum Input Level

Minimum Input Level Conversion Gain VOUT = (Gain × VIN) + Intercept 4.2 V/V rms

Output Intercept Output Voltage—High Power In PIN =+5 dBm, 400 mV rms 1.67 V Output Voltage—Low Power In PIN = –21 dBm, 20 mV rms 0.1 V Temperature Sensitivity PIN = –5 dBm

1

2

3

4

1

2

3

4

CW input, −40°C < TA < +85°C Delta from 25°C, VS = 5 V 5 dB VS = 3 V 5 dB

= 5 V 10 dB

S

VS = 3 V 28.5 dB

= 5 V 32 dB

S

VS = 3 V 32 dB

= 5 V 36 dB

S

±0.25 dB error ±1 dB error

3

8 dBm

−19.5 dBm

0.02 V

25°C ≤ T

−40°C ≤ T

≤ 85°C

A

≤ +25°C

A

0.0027 dB/°C

−0.0046 dB/°C

CW input, −40°C < TA < +85°C Delta from 25°C, VS = 5 V 5 dB VS = 3 V 5 dB

= 5 V 8.5 dB

S

VS = 3 V 28.5 dB

= 5 V 32 dB

S

VS = 3 V 33 dB

= 5 V 36 dB

S

±0.25 dB error ±1 dB error

3

9 dBm

−19.5 dBm

0.02 V

25°C ≤ T

−40°C ≤ T

≤ 85°C

A

≤ +25°C

A

0.0030 dB/°C

−0.0049 dB/°C

Rev. A | Page 5 of 24

ADL5500

Parameter Condition Min Typ Max Unit

RMS CONVERSION (f = 3900 MHz) Input RFIN to output VRMS

Input Impedance 30||0.6 Ω||pF Input Return Loss 9 dB Dynamic Range

±0.1 dB Error ±0.25 dB Error V ±1 dB Error V

±2 dB Error V Maximum Input Level

Minimum Input Level Conversion Gain VOUT = (Gain × VIN) + Intercept 3.2 V/V rms

Output Intercept Output Voltage—High Power In PIN = +5 dBm, 400 mV rms 1.28 V Output Voltage—Low Power In PIN = –21 dBm, 20 mV rms 0.08 V Temperature Sensitivity PIN = –5 dBm

OUTPUT OFFSET No signal at RFIN 40 150 mV POWER SUPPLIES

Operating Range −40°C < TA < +85°C 2.7 5.5 V Quiescent Current No signal at RFIN

1

The available output swing, and hence the dynamic range, is altered by the supply voltage; see Figure 8.

2

Error referred to delta from 25°C response; see Figure 16 through Figure 21.

3

Error referred to best-fit line at 25°C

4

Calculated using linear regression.

5

Supply current is input level dependant; see Figure 6.

1

2

3

4

CW input, −40°C < TA < +85°C Delta from 25°C, VS = 5 V 2 dB VS = 3 V 5.5 dB

= 5 V 8 dB

S

VS = 3 V 28.5 dB

= 5 V 32 dB

S

VS = 3 V 34 dB

= 5 V 36.5 dB

S

±0.25 dB error ±1 dB error

3

12 dBm

−17 dBm

0.02 V

25°C ≤ T

−40°C ≤ T

≤ 85°C

A

≤ +25°C

A

5

0.0035 dB/°C

−0.0066 dB/°C

1.0 mA

Rev. A | Page 6 of 24

ADL5500

ABSOLUTE MAXIMUM RATINGS

Table 2.

Parameter Rating

Supply Voltage V VRMS 0 V, V RFIN 1.25 V rms Equivalent Power, re 50 Ω 15 dBm Internal Power Dissipation 150 mW θJA (WLCSP) 260°C/W Maximum Junction Temperature 125°C Operating Temperature Range −40°C to +85°C Storage Temperature Range −65°C to +150°C

S

5.5 V

S

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. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.

Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Rev. A | Page 7 of 24

ADL5500

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

BUMP 1 INDICATOR

VRMS

VPOS

1

4

COMM

RFIN

2

3

05546-003

TOP VIEW

(BUMP SIDE DOWN)

Not to Scale

Figure 3. 4-Ball WLCSP Pin Configuration

Table 3. Pin Function Descriptions

Ball No. Mnemonic Description

1 VRMS

Output Pin. Rail-to-rail voltage output with limited current drive capability. The output has an internal 1 kΩ

series resistance. High resistive loads are recommended to preserve output swing. 2 COMM Device Ground Pin. 3 RFIN Signal Input Pin. Internally ac-coupled after internal termination resistance. Nominal 50 Ω input impedance. 4 VPOS Supply Voltage Pin. Operational range 2.7 V to 5.5 V.

Rev. A | Page 8 of 24

ANALOG DEVICES ADL5500 Service Manual

FEATURES

APPLICATIONS

GENERAL DESCRIPTION

FUNCTIONAL BLOCK DIAGRAM

TABLE OF CONTENTS

REVISION HISTORY

SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

ESD CAUTION

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS