MAX2014 Maxim, MAX2014 Datasheet

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MAX2014

Manufacturer Part Number
MAX2014
Description
The MAX2014 complete multistage logarithmic amplifier is designed to accurately convert radio-frequency (RF) signal power in the 50MHz to 1000MHz frequency range to an equivalent DC voltage
Manufacturer
Maxim
Datasheet

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The MAX2014 complete multistage logarithmic amplifier is
designed to accurately convert radio-frequency (RF) sig-
nal power in the 50MHz to 1000MHz frequency range to
an equivalent DC voltage. The outstanding dynamic range
and precision over temperature of this log amplifier make it
particularly useful for a variety of base-station and other
wireless applications, including automatic gain control
(AGC), transmitter power measurements, and received-
signal-strength indication (RSSI) for terminal devices.
The MAX2014 can also be operated in a controller
mode where it measures, compares, and controls the
output power of a variable-gain amplifier as part of a
fully integrated AGC loop.
This logarithmic amplifier provides much wider mea-
surement range and superior accuracy compared to
controllers based on diode detectors, while achieving
excellent temperature stability over the full -40°C to
+85°C operating range.
19-0583; Rev 0; 6/06
Pin Configuration appears at end of data sheet.
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.
AGC Measurement and Control
RF Transmitter Power Measurement
RSSI Measurements
Cellular Base-Station, WLAN, Microwave Link,
Radar, and other Military Applications
Optical Networks
PWDN
INLO
INHI
________________________________________________________________ Maxim Integrated Products
2
3
5
General Description
50MHz to 1000MHz, 75dB Logarithmic
50Ω
POWER DETECTORS
Σ
Applications
7dB
MAX2014
Σ
7dB
GND
V
CC
1, 4
6
♦ Complete RF Detector/Controller
♦ 50MHz to 1000MHz Frequency Range
♦ Exceptional Accuracy Over Temperature
♦ High Dynamic Range
♦ 2.7V to 5.25V Supply Voltage Range*
♦ Scaling Stable Over Supply and Temperature
♦ Controller Mode with Error Output
♦ Shutdown Mode with Typically 1µA of Supply
♦ Available in 8-Pin TDFN Package
*See the Power-Supply Connections section.
+Denotes lead-free package.
T = Tape-and-reel package.
*EP = Exposed paddle.
MAX2014ETA-T
MAX2014ETA+T
Variations
Current
Σ
OFFSET AND COMMON-
PART
7dB
MODE AMP
Detector/Controller
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
Functional Diagram
20kΩ
20kΩ
PIN-
PACKAGE
8 TDFN-EP*
(3mm x 3mm)
8 TDFN-EP*
(3mm x 3mm)
8
7
OUT
SET
Features
T833-2
T833-2
CODE
PKG
1

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MAX2014 Summary of contents

Page 1

... The MAX2014 can also be operated in a controller mode where it measures, compares, and controls the output power of a variable-gain amplifier as part of a fully integrated AGC loop. ...

Page 2

... Source Current Sink Current Minimum Output Voltage V Maximum Output Voltage V AC ELECTRICAL CHARACTERISTICS (MAX2014 Typical Application Circuit (Figure 1), V +85°C, unless otherwise noted. Typical values are at T PARAMETER RF Input Frequency Range Return Loss Large-Signal Response Time RSSI MODE—50MHz RF Input Power Range ± ...

Page 3

... Typical Slope Variation Intercept Typical Intercept Variation Note 1: The MAX2014 is guaranteed by design for T Note 2: Typical minimum and maximum range of the detector at the stated frequency. Note 3: Dynamic range refers to the range over which the error remains within the stated bounds. The error is calculated at T and +85° ...

Page 4

... Logarithmic Detector/Controller (MAX2014 Typical Application Circuit (Figure 1 0V +25°C, unless otherwise noted.) PWDN OUTPUT VOLTAGE vs. INPUT POWER 2 50MHz IN 1.8 1.6 1.4 1.2 1 +85° -40°C A 0.6 0.4 -80 -70 -60 -50 -40 -30 -20 -10 0 INPUT POWER (dBm) OUTPUT VOLTAGE ERROR vs. INPUT POWER 50MHz -40° ...

Page 5

... Logarithmic (MAX2014 Typical Application Circuit (Figure 1 0V +25°C, unless otherwise noted.) PWDN OUTPUT VOLTAGE vs. INPUT POWER 2 450MHz IN 1.8 1.6 1.4 1.2 1 +85° -40°C A 0.8 0.6 0.4 -80 -70 -60 -50 -40 -30 -20 -10 INPUT POWER (dBm) OUTPUT VOLTAGE ERROR vs. INPUT POWER 450MHz -40°C ...

Page 6

... Logarithmic Detector/Controller (MAX2014 Typical Application Circuit (Figure 1 0V +25°C, unless otherwise noted.) PWDN OUTPUT VOLTAGE ERROR vs. INPUT POWER 900MHz -40° NORMALIZED TO DATA AT +25° -80 -70 -60 -50 -40 -30 -20 -10 ...

Page 7

... Logarithmic (MAX2014 Typical Application Circuit (Figure 1 0V +25°C, unless otherwise noted.) PWDN OUTPUT VOLTAGE vs. FREQUENCY 2.0 1.8 1 -10dBm -30dBm IN 1 -45dBm IN 0 -60dBm IN 0 0.4 0 200 400 FREQUENCY INPUT (MHz) S11 MAGNITUDE -10.0 -12.5 -15 2.7V, 3.0V, 3.3V, 3.6V CC -17.5 -20.0 -22.5 -25.0 0 200 400 FREQUENCY (MHz) ...

Page 8

... S 5.25V, set R4 = 75Ω ±1% (100ppm/°C max) and PWDN must be connected to GND. Power-Down Mode The MAX2014 can be powered down by driving PWDN with logic-high (logic-high = V CC mode, the supply current is reduced to a typical value of 1µA. For normal operation, drive PWDN with a logic- low ...

Page 9

... SET. With R1 = 0Ω, the controller mode slope is approximately 19mV/dB (RF = 100MHz). Layout Considerations As with any RF circuit, the layout of the MAX2014 circuit affects the device’s performance. Use an abundant num- ber of ground vias to minimize RF coupling. Place the input capacitors (C1, C2) and the bypass capacitors (C3– ...

Page 10

... A2 0.20 REF. -DRAWING NOT TO SCALE- 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. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

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