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Part: MAX4003
Category:
Analog & Mixed-Signal Processing
Description: MAX4003 100MHz to 2500MHz, 45dB RF Detector in a Ucsp
Company: Maxim Integrated Products
Datasheet: Download MAX4003 datasheet File size : 155 kB
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Datasheet text preview:
19-2620; Rev 1; 3/03
100MHz to 2500MHz, 45dB RF Detector in a UCSP
General Description
The MAX4003 low-cost, low-power logarithmic amplifier is designed to detect the power levels of RF power amplifiers (PAs) operating from 100MHz to 2500MHz. A typical dynamic range of 45dB makes this logarithmic a m p l i f i e r useful in a variety of wireless applications including cellular handset PA control, TSSI for wireless terminal devices, and other transmitter power measurements. This logarithmic amplifier provides much wider measurement range and superior accuracy than typical diode-based detectors. Excellent temperature stability is achieved over the full operating range of -40°C to +85°C. The MAX4003 logarithmic amplifier is a voltage-measuring device with a typical signal range of -58dBV to -13dBV. The input signal is internally AC-coupled by an on-chip 5pF capacitor in series with a 2k resistance. This highpass coupling, with a corner at 16MHz, sets the lowest operating frequency and allows the input signal source to be DC grounded. The MAX4003 also features a power-on delay, which holds the detector o u t p u t (OUT) low for approximately 5µs to ensure glitchless controller output. The MAX4003 is available in an 8-bump chip-scale package (UCSPTM), an 8-pin µMAX package, and an 8-pin thin QFN package. The device consumes 5.9mA with a 3.0V supply and only 13µA when the device is in shutdown. o Complete RF Detector o Frequency Range from 100MHz to 2500MHz o Input Range of -58dBV to -13dBV (-45dBm to 0dBm into 50) o Fast Response: 70ns in 10dB Steps o Low-Current Consumption: 5.9mA at VCC = 3.0V o 13µA (typ) Shutdown Current o Available in 8-Bump UCSP or 8-Pin µMAX and Thin QFN Packages
Features
MAX4003
Ordering Information
PART MAX4003EBL-T MAX4003EUA MAX4003ETA-T TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN/BUMPPACKAGE 8 UCSP-8 8 µMAX 8 Thin QFN-EP TOP MARK ABV -- ADG
Pin Configurations
TOP VIEW (BUMPS ON BOTTOM)
1 2 3 RFIN 1 SHDN 2 8 VCC 7 OUT
TOP VIEW
Applications
Cellular Handsets (TDMA, CDMA, GPRS, GSM) TSSI for Wireless Terminal Devices Transmitter Power Measurement and Control RSSI for Fiber Modules
UCSP is a trademark of Maxim Integrated Products, Inc.
A
RFIN
SHDN
GND
MAX4003
B VCC
MAX4003
CLPF
GND 3 CLPF 4
6 N.C. 5 GND
C
VCC
OUT
GND
µMAX
UCSP
Pin Configurations continued at end of data sheet.
Functional Diagram
SHDN VCC OUTPUT ENABLE DELAY + gm 1X OUT
DET RFIN 10dB
DET
DET
DET
DET
CLPF 10dB 10dB 10dB V-I OFFSET COMP LOWNOISE BANDGAP
MAX4003
GND
________________________________________________________________ Maxim Integrated Products
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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.
100MHz to 2500MHz, 45dB RF Detector in a UCSP MAX4003
ABSOLUTE MAXIMUM RATINGS
VCC to GND .........-0.3V to +5.25V SHDN, CLPF to GND..........-0.3V to (VCC + 0.3V) RFIN..........+6dBm OUT Short Circuit to GND.......10s Continuous Power Dissipation (TA = +70°C) 8-Bump UCSP (derate 4.7mW/°C above +70°C).........379mW 8-Pin µMAX (derate 4.5mW/°C above +70°C) ....362mW 8-Pin Thin QFN (derate 24.4mW/°C above +70°C) ...1951mW Operating Temperature Range ...-40°C to +85°C Junction Temperature ......+150°C Storage Temperature Range .....-65°C to +150°C Lead Temperature (soldering, 10s) .........+300°C
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.
DC ELECTRICAL CHARACTERISTICS
(VCC = 3.0V, V SHDN = VCC, CCLPF = 0.1µF, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER Supply Voltage Supply Current Shutdown Input Current Logic High Threshold Voltage Logic Low Threshold Voltage DETECTOR OUTPUT Voltage Range Output Voltage in Shutdown Output-Referred Noise Small-Signal Bandwidth Slew Rate BW V OUT V OUT RFIN = 0dBm RFIN = -45dBm V SHDN = 0V fo =150kHz CCLPF = 150pF VOUT = 0.36V to 1.45V, CCLPF = 150pF 1.45 0.36 1 8 8 5 V mV nV/Hz MHz V/µs SYMBOL VCC ICC I SHDN VIH VIL VCC = 5.0V V SHDN = 3.0V V SHDN = 0V 1.8 0.8 V SHDN = 1.8V V SHDN = 0.8V CONDITIONS MIN 2.7 5.9 13 5 -0.01 TYP MAX 5.0 10 30 20 ±5 UNITS V mA µA µA V V
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100MHz to 2500MHz, 45dB RF Detector in a UCSP MAX4003
AC ELECTRICAL CHARACTERISTICS
(VCC = 3.0V, V SHDN = VCC, CCLPF = 0.1µF, fRF = 100MHz to 2500MHz, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)
PARAMETER RF Input Frequency Range RF Input Voltage Range Equivalent RF Input Power Range SYMBOL fRF VRF PRF (Note 2) With 50 termination (Note 2) fRF = 100MHz, TA = +25°C Logarithmic Slope fRF = 100MHz fRF = 900MHz fRF = 1900MHz fRF = 100MHz, TA = +25°C Logarithmic Intercept PX fRF = 100MHz fRF = 900MHz fRF = 1900MHz RFIN Input Impedance RIN CIN -62.3 -64 -57 -56 2 0.5 k pF CONDITIONS MIN 100 -58 -45 22.8 22.5 25.0 29.0 -57 -51.7 -50 dBm 25.5 TYP MAX 2500 -13 0 28.2 28.5 mV/dB UNITS MHz dBV dBm
Note 1: All devices are 100% production tested at TA = +25°C and are guaranteed by design for TA = -40°C to +85°C as specified. All production AC tests are done at 100MHz. Note 2: Typical minimum and maximum range of the detector.
Typical Operating Characteristics
(VCC = V SHDN = 3.0V, CCLPF = 0.1µF, TA = +25°C, unless otherwise noted.)
OUTPUT VOLTAGE vs. INPUT POWER (µMAX)
MAX4003 toc01
OUTPUT VOLTAGE vs. INPUT POWER (UCSP)
MAX4003 toc02
LOG CONFORMANCE vs. INPUT POWER (µMAX)
3 2 1.9GHz ERROR (dB) 1 0 -1 0.9GHz -2 -3 -4
0.1GHz
MAX4003 toc03
1.8 1.6 1.4 VOUT (V) 1.2 1.0 0.8 0.6 0.4 0.2 -60 -50 -40 -30 -20 -10 0
0.1GHz
1.8 1.6 1.4 1.2 VOUT (V) 1.0 0.9GHz 0.8 0.6 0.4 0.2 0.1GHz 2.5GHz 1.9GHz
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1.9GHz 2.5GHz
2.5GHz
0.9GHz
10
-60
-50
-40
-30
-20
-10
0
10
-50
-40
-30
-20
-10
0
10
INPUT POWER (dBm)
INPUT POWER (dBm)
INPUT POWER (dBm)
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