MAX12000ETB+T Maxim Integrated Products, MAX12000ETB+T Datasheet

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MAX12000ETB+T

Manufacturer Part Number
MAX12000ETB+T
Description
GPS Amp 2 Low Noise Amp 1.575GHz 5.5V 10-Pin TDFN EP T/R
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX12000ETBT.pdf (9 pages)

Specifications of MAX12000ETB+T

Package
10TDFN EP
Manufacturer Type
Low Noise Amplifier
Number Of Channels Per Chip
2
Maximum Gain
19.6@1575MHz dB
Maximum Input Return Loss
21@1575MHz dB
Maximum Output Return Loss
14.5@1575MHz dB
Maximum Operating Temperature
85 °C
Minimum Operating Temperature
-40 °C
Maximum Operating Frequency
1575 MHz
Maximum Power Dissipation
1481 mW
Maximum Reverse Isolation
33@1575MHz dB
Maximum Supply Current
30.2@5.5V mA
Power Supply Type
Single
Typical Noise Figure
2@1575MHz dB
Typical Single Supply Voltage
5 V
The MAX12000 GPS front-end amplifier IC is designed
for automotive and marine GPS satellite navigation
antenna modules or for any application that needs to
compensate for cable losses from the GPS antenna to
receiver. Two unconditionally stable low-noise amplifier
stages provide the high gain and integrated I/O match-
ing to minimize the need for external matching compo-
nents and eliminate the need for additional gain stages.
The MAX12000 features the option to place a bandpass
ceramic or SAW filter between the two amplifier stages
to provide a narrow-band output to further improve the
noise performance of the GPS receiver. Additionally, a
3.4dB gain step is provided to compensate for cable
loss variation between different applications.
The MAX12000 is designed to operate at the GPS fre-
quency of 1575MHz with a 34.8dB typical cascaded
gain and a 25mA supply current. The two LNA stages
allow the use of a wide range of GPS filter types for
maximum flexibility in system design. The final RF out-
put pin, which drives the cable to the GPS receiver, is
also the power-supply connection that accepts a DC
supply in the +3.0V to +5.5V range. Alternatively, the
DC supply can be applied to pin 4.
The GPS front-end amplifier is designed on a low-noise,
advanced SiGe process and is available in a lead-free,
10-pin TDFN surface-mount package (3mm x 3mm).
19-4021; Rev 0; 3/06
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.
Integrated Automotive and Marine GPS
Receivers
________________________________________________________________ Maxim Integrated Products
General Description
TOP VIEW
1575MHz GPS Front-End Amplifier
Applications
EXTCAP/ALT_V
RFOUT2/V
RFIN2
GND
GND
CC
CC
+
1
2
3
4
5
Pin Configuration/Functional Diagram
AMP 2
♦ First Amp Noise Figure
♦ High Gain
♦ 3.4dB Gain Step
♦ Integrated 50Ω Output Matching
♦ 3.0V to 5.5V Supply Voltage Range
♦ Small, Low-Cost Package (3mm x 3mm)
♦ ESD Protected to ±1kV Human Body Model
*Without external input impedance match.
**First amplifier input is impedance matched (S
Second amplifier set to high gain. Amplifiers cascaded without
interstage filter.
+Denotes lead-free package.
Typical Operating Circuit appears at end of data sheet.
GENERATION
MAX12000
MAX12000ETB+
TDFN
DC
PART
AMP 1
**
: 34.8dB
10
9
8
7
6
RFOUT1
GND
GND
GAIN_SELECT
RFIN1
-40°C to +85°C
TEMP RANGE
Ordering Information
*
: 1.0dB
PIN-
PACKAGE
10 TDFN
11
Features
= -10dB).
PKG
CODE
T1033-2
1

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MAX12000ETB+T Summary of contents

Page 1

... TDFN surface-mount package (3mm x 3mm). Integrated Automotive and Marine GPS Receivers TOP VIEW ________________________________________________________________ Maxim Integrated Products 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. 1575MHz GPS Front-End Amplifier ♦ First Amp Noise Figure ♦ ...

Page 2

GPS Front-End Amplifier ABSOLUTE MAXIMUM RATINGS RFOUT1, RFOUT2, EXTCAP to GND...........-0. RFIN1 Input Power (50Ω source) ...................................+15dBm RFIN1 to GND........................................................-0.3V to +0.3V RFIN2 to GND........................................................-0.3V to +1.0V GAIN_SELECT to GND...............................-0. Stresses beyond those listed under ...

Page 3

AC ELECTRICAL CHARACTERISTICS (continued +3.0V to +5.5V -40dBm matched to 50Ω, load = 50Ω, pin 7 open, unless otherwise noted.) (Note 1) PARAMETER SYMBOL AMP 2 Input Return Loss AMP 2 Output Return ...

Page 4

GPS Front-End Amplifier (P = -40dBm 1575MHz, inputs and outputs are terminated to 50Ω AMP 1 GAIN vs. FREQUENCY (WITH EXTERNAL INPUT IMPEDANCE MATCH 800 ...

Page 5

AMP 1 S12 -32 -34 -36 -38 -40 800 1000 1200 1400 1600 FREQUENCY (MHz) PIN NAME Amplifier 2 Input. Incorporates an internal DC-blocking ...

Page 6

GPS Front-End Amplifier Detailed Description The MAX12000 IC contains two LNA stages tuned for use at 1575MHz. AMP 1 has an internal load that limits the bandwidth and provides a 50Ω output impedance through a DC- blocking capacitor. The ...

Page 7

Figure 1. Layout of the Evaluation Board Realized on 0.8mm FR4 (Not to Scale) _______________________________________________________________________________________ 1575MHz GPS Front-End Amplifier 7 ...

Page 8

GPS Front-End Amplifier (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) D PIN 1 INDEX AREA -DRAWING NOT TO SCALE- 8 _______________________________________________________________________________________ A2 N ...

Page 9

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 © 2006 Maxim Integrated Products ...

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