Rainbow Electronics MAX2203 User Manual

General Description

The MAX2203 RMS power detector is designed to
operate from 800MHz to 2.0GHz. The device is ideal for
wideband code-division multiple access (WCDMA),
cdma2000

®

, and high-speed downlink/uplink packet
access. The MAX2203 accepts an RF signal at the
input and outputs the same voltage regardless of the
peak-average of the input signal. The output voltage
and input power is linear in dB. The device has a

-24dBm to +3dBm detection range, and every dB
change in input power gives 35mV (typ) change in out­put voltage.

The MAX2203 operates from a 2.5V to 4.2V supply and
is specified over the -40°C to +85°C extended tempera­ture range. The device is available in a 6-bump WLP
package.

Applications

WCDMA, cdma2000, 1xEVDO

High-Speed Downlink Packet Access (HSDPA)

High-Speed Uplink Packet Access (HSUPA)

Features

o -24dBm to +3dBm Power-Detection Range

o 35mV/dB (typ) Log Detector

o 0.1dB (typ) RMS Accuracy from WCDMA

Modulation Change

o ±0.4dB Detection Error Due to Temperature

o +2.5V to +4.2V Single-Supply Operation

o Space-Saving 6-Bump WLP Package

MAX2203

RMS Power Detector

________________________________________________________________

Maxim Integrated Products

1

Pin Configuration

Ordering Information

19-4982; Rev 0; 10/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

EVALUATION KIT

AVAILABLE

PART TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX2203EWT+T10 -40°C to +85°C 6 WLP AA

+

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Typical Operating Circuit appears at end of data sheet.

cdma2000 is a registered trademark of Telecommunications
Industry Association.

TOP VIEW
(BUMPS ON BOTTOM)

12

+

MAX2203

A

RFIN/ENA

GND

B

GND

FILT

C

V

OUT

CC

MAX2203

RMS Power Detector

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC= 2.5V to 4.2V, TA= -40°C to +85°C, V

ENA

= 2.7V, no RF signal applied. Typical values are at VCC= 2.8V, TA= +25°C, unless

otherwise noted.) (Note 3)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Note 3: Guaranteed by production test at TA= +85°C and 800MHz. Guaranteed by design and characterization at TA= -40°C and

T

A

= +25°C, and over frequency limits.

Note 4: Guaranteed by design and characterization.
Note 5: Input power -24dBm to +3dBm. Ideal straight line calibrated with input power -20dBm and 0dBm at T

A

= +25°C.

V

CC

to GND...........................................................-0.3V to +4.5V

ENA, OUT, FILT to GND ........................................-0.3V to +3.0V

RFIN Input Power ...........................................................+10dBm

Continuous Power Dissipation (TA= +70°C)

6-Bump WLP (derate 2.9mW/°C above +70°C)...........232mW

Junction-to-Ambient Thermal Resistance (θJA)

(Note 1) ......................................................................347°C/W

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +160°C

Junction Temperature .....................................................+150°C

Lead Temperature (soldering, 10s)..........Reflow Profile (Note 2)

AC ELECTRICAL CHARACTERISTICS

(VCC= 2.8V, TA= -40°C to +85°C, V

ENA

= 2.7V, fRF= 800MHz to 2GHz, unless otherwise noted. Typical values are at TA= +25°C.)

(Note 3)

Note 1: Package thermal resistances were obtained using the method described in JEDEC specifications. For detailed information

on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial

.

Note 2: Refer to Application Note 1891:

Wafer-Level Packaging (WLP) and Its Applications

.

CAUTION! ESD SENSITIVE DEVICE

Supply Voltage V

Supply Current I

Shutdown Supply Current V

ENA Logic-High Threshold V

ENA Logic-Low Threshold V

ENA Input Current V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

CC

CC

VCC = 2.8V, RF input = -24dBm to +3dBm 5 8 mA

= 0V 0.5 10 µA

ENA

IH

IL

= 1.1V 25 µA

ENA

2.5 2.8 4.2 V

1.1 2.7 V

0 0.6 V

RF Input Frequency 800 2000 MHz

Max imum Output Voltage RFIN at +3dBm 1.05 1.5 1.75 V

Min imum Output Voltage No RF input power 300 400 mV

Minimum Input Power Level

Log Slope [(V

Log Conformance Error with
10dB Step

Power-Detector Accuracy Due to
Temperature

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

+1dB input power step results in at least
25mV increase in V

at +3dBm) - (V

OUT

(Notes 4, 5) -1.3 +1.3 dB

RF input at -4dBm to 0dBm, TA = -40°C to
+85°C, relative to +25°C

(Note 4)

OUT

at -24dBm)]/27 25 35 45 mV/dB

OUT

-24 dBm

±0.4 dB

MAX2203

RMS Power Detector

_______________________________________________________________________________________ 3

Typical Operating Characteristics

(VCC= 2.7V, TA= +25°C, WCDMA uplink DPCCH + 1DPDCH, log conformance calculation is referenced to a straight line that is
calibrated at -20dBm and 0dBm, unless otherwise noted.)

OUTPUT VOLTAGE vs. INPUT POWER

1.6

1.4

1.2

1.0

0.8

OUTPUT VOLTAGE (V)

0.6

0.4

0.2

-30 5

800MHz

2000MHz

INPUT POWER (dBm)

MAX2203 toc01

0-5-10-15-20-25

LOG CONFORMANCE WITH 1dB STEP

CELLULAR BAND

0.3

0.2
MEAN + 3 x STDEV

0.1

0

-0.1

LOG CONFORMANCE (dB)

-0.2

-0.3

MEAN

MEAN - 3 x STDEV

-5-10-15-20-25 0

INPUT POWER (dBm)

MAX2203 toc04

PCS WCDMA 1+1 vs. 1+5 RMS ERROR

(± DEVIATION FROM MIDPOINT)

0.25

0.20

0.15

0.10

RMS ERROR (dB)

0.05

0

-25

-21

-17

-13

-23

-19

-15
PIN (dBm)

-11 -7 -3

-9 -51-153

LOG CONFORMANCE WITH

1dB STEP PCS BAND

0.3

0.2

0.1

0

-0.1

LOG CONFORMANCE (dB)

-0.2

-0.3

MEAN + 3 x STDEV

MEAN - 3 x STDEV

INPUT POWER (dBm)

MEAN

-5-10-15-20-25 0

0.06

0.05

MAX2203 toc02

0.04

0.03

RMS ERROR (dB)

0.02

0.01

0

1.0

MAX2203 toc05

0.6

0.2

-0.2

LOG CONFORMANCE (dB)

-0.6

-1.0

-15 0

CELL WCDMA 1+1 vs. 1+5 RMS ERROR

(± DEVIATION FROM MIDPOINT)

-25

-21

-17

-13

-23

-19

-15
PIN (dBm)

-11 -7 -3

-9 -51-153

LOG CONFORMANCE WITH

10dB STEP CELLULAR BAND

MEAN + 3 x STDEV

MEAN

MEAN - 3 x STDEV

-5-10

INPUT POWER (dBm)

MAX2203 toc03

MAX2203 toc06

LOG CONFORMANCE WITH

10dB STEP PCS BAND

1.0

0.6

MEAN + 3 x STDEV

0.2

-0.2

LOG CONFORMANCE (dB)

-0.6

-1.0

-15 0

MEAN - 3 x STDEV

-5-10

INPUT POWER (dBm)

MAX2203 toc07

MEAN

TEMPERATURE ERROR (dB)

55-UNIT CELLULAR ROOM-COLD

TEMPERATURE ERROR

0.8

0.6

0.4

0.2

0

-0.2

-0.4

-25

-21

-17

-23

-13

-19

-15

INPUT POWER (dBm)

-9 -51-153

-11 -7 -3

MAX2203 toc08