Details, datasheet, quote on part number: MAX2678GTB/V+
PartMAX2678GTB/V+
Category
TitleRF Front End GPS/GNSS Front-End Amplifier
Description

Maxim MAX2678 GPS/GNSS Front-End Amplifier IC is designed for automotive and marine GPS/GNSS satellite navigation antenna modules, or for any application that needs to compensate for cable losses from the antenna to the receiver. Two unconditionally stable low-noise amplifier stages provide the high gain and integrated I/O matching. These stages minimize the need for external matching components and eliminate the need for additional gain stages. The IC features the option to place a bandpass ceramic or surface acoustic wave (SAW) filter between the two amplifier stages for improved immunity to out-of-band interferers. A 3.4dB-gain step is also provided to compensate for cable loss variation between different applications.



CompanyIntegra Technologies
DatasheetDownload MAX2678GTB/V+ datasheet
  
MAX2678GTB/V+ photo

Others parts numbering
MAX2678EVKIT#: RF Development Tools Eval Kit for MAX2678
MAX2678GTB/V+T

 

Features, Applications

The MAX2678 GPS/GNSS front-end amplifier IC is designed for automotive and marine GPS/GNSS satellite navigation antenna modules, or for any application that needs to compensate for cable losses from the antenna to receiver. Two unconditionally stable low-noise amplifier stages provide the high gain and integrated I/O matching to minimize the need for external matching components and eliminate the need for additional gain stages. The IC features the option to place a bandpass ceramic or surface acoustic wave (SAW) filter between the two amplifier stages for improved immunity to out-of-band interferers. Additionally, a 3.4dB-gain step is provided to compensate for cable loss variation between different applications. The device is designed to operate across all GNSS frequency standards with a 35dB typical cascaded gain and a 25mA supply current. The two LNA stages allow the use of a wide range of GNSS filter types for maximum flexibility in system design. The final RF output pin, which drives the cable to the GNSS receiver, is also the powersupply connection that accepts a DC supply in the to 5.25V range. Alternatively, the DC supply can be applied to pin 4. This GPS/GNSS front-end amplifier is available in a leadfree, 10-pin TDFN surface-mount package x 3mm). Electrical performance is guaranteed over the extended to +105C temperature range.

Features

First Amplifier Noise Figure: 0.9dB High Gain:* 35dB 3.4dB Gain Step Shared VCC and RFOUT2 Pin Integrated 50 Output Matching AMP 2 includes 50 Input Matching to 5.25V Supply Voltage Range Small x 3mm) Low-Cost Package AEC-Q100 Qualified ESD Protected to 2kV Human Body Model to +105C Ambient Temperature Range

Applications
Integrated Automotive and Marine GPS Receivers Active Antennas

*First amplifier input is impedance matched = -10dB). Second amplifier is set to high gain. Amplifiers are cascaded without interstage filter. Ordering Information and Typical Operating Circuit appear at end of data sheet.

RFOUT2/VCC, EXTCAP/ALT_VCC, VCC to +5.5V GAIN_SELECT, GND...............-0.3V to (VCC + 0.25V, but RFIN1, RFIN2 Input Power to +1V Continuous Power Dissipation (TA +70C) 12-Pin TDFN (derate 18.5mW/C above +70C).......1481mW Operating Ambient Temperature Range............ to +105C Maximum Junction Temperature......................................+150C Storage Temperature Range............................. to +150C Lead Temperature (soldering, 10s).................................. +300C Soldering Temperature (reflow)........................................+260C

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.

PARAMETER Supply Voltage Supply Current Gain-Select Input Current SYMBOL VCC ICC IIL

(VIN to +105C. Typical values are at +5.0V and = +25C. Pin 7 is open, unless otherwise noted.) (Note 1) CONDITIONS to +105C VIL 0V 20 MIN 15.0 25 TYP MAX UNITS mA A

PARAMETER Operating Frequency AMP 1 Gain AMP 1 Gain Variation Over Temperature AMP 1 Noise Figure AMP 1 Input Third-Order Intercept Point AMP 1 Input 1dB Compression Point AMP 1 Input Return Loss AMP 1 Output Return Loss AMP 1 Reverse Isolation AMP 2 Gain AMP 2 Gain Step AMP 2 Gain Variation Over Temperature AMP 2 Noise Figure AMP 2 Output Third-Order Intercept Point NF1 IIP3 SYMBOL fRF |S21|1

(VCC to 5.25V, PIN = -40dBm, fIN to +105C. Typical values are at 5.0V and = +25C. AMP 1 input matched to 50. All ports terminated in 50. Pin 7 is open, unless otherwise noted.) (Note 1) CONDITIONS MIN 14 TYP Two tones at 1574.5MHz and 1575.5MHz, -35dBm per tone Gain change when pin 7 is shorted to GND Two tones at 1574.5MHz and 1575.5MHz, -30dBm per tone MAX UNITS MHz dB dBm dB dBm

PARAMETER AMP 2 Output 1dB Compression Point AMP 2 Input Return Loss AMP 2 Output Return Loss AMP 2 Reverse Isolation |S22|2 |S12|2 SYMBOL

(VCC to 5.25V, PIN = -40dBm, fIN to +105C. Typical values are at 5.0V and = +25C. Input matched to 50, load = 50, pin 7 is open, unless otherwise noted.) (Note 1) CONDITIONS MIN TYP MAX UNITS dBm dB

Note = +25C and = +105C are guaranteed by production test. = -40C, the minimum and maximum values are guaranteed by design and characterization, unless otherwise noted.

(MAX2678 EV kit, all measurements are calibrated to SMA connectors, PIN = -40dBm, fIN = 1575MHz, inputs and outputs are terminated to 50, VCC = +25C, unless otherwise noted.)

SUPPLY CURRENT vs. SUPPLY VOLTAGE (PIN 7 OPEN, HIGH-GAIN MODE)
AMP 2 GAIN vs. SUPPLY VOLTAGE (PIN 7 OPEN, HIGH-GAIN MODE)
AMP 2 GAIN vs. SUPPLY VOLTAGE (PIN 7 SHORT TO GND, LOW-GAIN MODE)

 

Some Part number from the same manufacture Integra Technologies
MAX2678EVKIT#

Maxim MAX2678 GPS/GNSS Front-End Amplifier IC is designed for automotive and marine GPS/GNSS satellite navigation antenna modules, or for any application that needs to compensate for cable losses from

MAX2678GTB/V+T
 
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