Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsMAX2204EXK+T

General Description

The MAX2204 RF power detector is designed to oper-

ate from 450MHz to 2.5GHz. The device is ideal for

wideband code-division multiple access (WCDMA),

cdma2000

, and high-speed downlink/uplink packet

access. The MAX2204 accepts an RF signal at the

input, and outputs a highly repeatable voltage. The out-

put voltage increases monotonically with increasing

input power. The device is designed to compensate for

temperature and process shifts, reducing the typical

output variation to less than ±0.5dB at full input power

and ±1.5dB at the lower power.

The MAX2204 features a detection range from -16dBm

to +5dBm. High input impedance allows for low-loss

resistive tap if an isolator is used. The device uses

external termination at the input so that the RF signal

from several directional couplers can be connected to

a single detector chip.

The MAX2204 operates from a 2.7V to 3.3V power

supply. The device is available in a tiny 5-pin SC70 pack-

age. Electrical performance is guaranteed over a -40°C to

+85°C temperature range.

Applications

WCDMA, cdma2000

High-Speed Downlink Packet Access (HSDPA)

High-Speed Uplink Packet Access (HSUPA)

Features

o -16dBm to +5dBm Detection Range

o ±0.3dB Detection Error Due to Temperature

o +2.7V to +3.3V Single-Supply Operation

o Easy-to-Assemble, Lead-Free, 5-Pin SC70

Package

MAX2204

RF Power Detector

________________________________________________________________

Maxim Integrated Products

GND

ENARFIN

1 5 OUTV

MAX2204

TOP VIEW

Pin Configuration

Ordering Information

19-0753; Rev 0; 4/07

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Denotes a lead-free package.

cdma2000 is a registered trademark of Telecommunications

Industry Association.

PART TEMP RANGE

PIN-

PACKAGE

PKG

CODE

MAX2204EXK+ -40°C to +85°C 5 SC70 X5+1

EVALUATION KIT

AVAILABLE

Summary of content (7 pages)

PAGE 1
9-0753; Rev 0; 4/07 KIT ATION EVALU E L B AVAILA RF Power Detector The MAX2204 RF power detector is designed to operate from 450MHz to 2.5GHz. The device is ideal for wideband code-division multiple access (WCDMA), cdma2000®, and high-speed downlink/uplink packet access. The MAX2204 accepts an RF signal at the input, and outputs a highly repeatable voltage. The output voltage increases monotonically with increasing input power.
PAGE 2
MAX2204 RF Power Detector ABSOLUTE MAXIMUM RATINGS VCC to GND ...........................................................-0.3V to +3.6V OUT, Logic Input (ENA) to GND ................-0.3V to (VCC + 0.3V) RF Input Power ...............................................................+10dBm Continuous Power Dissipation (TA = +70°C) (derate 3.1mW/°C above +70°C) ................................247mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ....................
PAGE 3
RF Power Detector 1.0 0.5 1.5 -0.5 0.5 -1.0 -15 -10 -5 PIN (dBm) 0 5 -15 -5 PIN (dBm) 0 5 10 -20 f = 824MHz TA = -40°C f = 849MHz TA = -40˚C 1.0 TA = +85°C -1.0 0 -15 -10 -5 PIN (dBm) 0 5 TA = +85°C -10 -5 PIN (dBm) 0 5 10 -20 -15 -10 -5 PIN (dBm) 0 DETECTOR ERROR FROM TA = +25°C AT 2500MHz 1.5 MAX2204 toc07 1.5 f = 1910MHz TA = -40°C TA = -40°C 1.0 0.5 ERROR (dB) 0.5 ERROR (dB) 10 0 -1.5 -15 DETECTOR ERROR FROM TA = +25°C AT 1910MHz 1.0 5 TA = -40°C -1.
PAGE 4
Typical Operating Characteristics (continued) (MAX2204 Evaluation Kit, typical values are at VCC = 2.85V, ENA = 2.0V, TA = +25°C, modulation equals CW, unless otherwise noted.) OUTPUT VOLTAGE vs. INPUT POWER AT 836MHz WITH RESISTIVE TAP OUTPUT VOLTAGE vs. INPUT POWER AT 1880MHz WITH RESISTIVE TAP f = 836MHz R = 3kΩ 2.0 MAX2204 toc10 2.5 MAX2204 toc09 2.5 f = 1880MHz R = 1.5kΩ 2.0 1.5 VOUT (V) 1.0 0.5 1.5 1.0 0.
PAGE 5
RF Power Detector PIN NAME FUNCTION 1 VCC 2 GND Power-Supply Pin. Bypass to GND with a capacitor as close as possible to the pin. Ground Connection. Use multiple ground vias to connect the GND pin to the ground plane. 3 RFIN RF Input. AC-couple with an external capacitor. 4 ENA Enable Input. Drive low to turn the part off. Drive high or connect to VCC to turn the part on. 5 OUT Power Detector Output. Filter with a capacitor to GND.
PAGE 6
MAX2204 RF Power Detector Table 1. MAX2204 Input Impedance Over Frequency PIN = -16dBm FREQUENCY (GHz) PIN = +5dBm REAL (Ω) IMAG (jΩ) REAL (Ω) IMAG (jΩ) 0.4 109.3 -556.5 120.0 -563.3 0.6 80.5 -369.0 91.0 -379.3 0.8 73.4 -300.3 80.8 -310.7 1.0 64.1 -260.2 75.6 -275.8 1.2 65.8 -216.4 79.9 -231.3 1.4 62.3 -194.9 64.4 -202.8 1.6 48.9 -177.5 53.9 -192.3 1.8 33.1 -157.4 39.9 -174.6 2.0 21.8 -142.2 25.9 -158.3 2.2 15.2 -131.2 18.3 -144.5 2.4 10.6 -116.
PAGE 7
RF Power Detector SC70, 5L.EPS PACKAGE OUTLINE, 5L SC70 21-0076 E 1 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.