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GP2015 Dataheets PDF



Part Number GP2015
Manufacturers Mitel Networks Corporation
Logo Mitel Networks Corporation
Description GPS Receiver RF Front End
Datasheet GP2015 DatasheetGP2015 Datasheet (PDF)

GP2015 GPS Receiver RF Front End Supersedes edition in August 1996 Global Positioning Products Handbook, HB4305-1.0 DS4374 - 2.4 October 1996 The GP2015 is a small format RF Front-end for Global Positioning System (GPS) receivers. Equivalent in performance to the GP2010 but in a TQFP package, this product is suited for size-critical applications as the RF area can be reduced by a factor of two to three using miniature surface mount passive components The GP2015 is designed to operate from eithe.

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GP2015 GPS Receiver RF Front End Supersedes edition in August 1996 Global Positioning Products Handbook, HB4305-1.0 DS4374 - 2.4 October 1996 The GP2015 is a small format RF Front-end for Global Positioning System (GPS) receivers. Equivalent in performance to the GP2010 but in a TQFP package, this product is suited for size-critical applications as the RF area can be reduced by a factor of two to three using miniature surface mount passive components The GP2015 is designed to operate from either 3 or 5 Volt supplies. The input to the device is the L1 (1575.42MHz) CoarseAcquisition (C/A) code Global Positioning signal from an antenna (via a low-noise pre-amplifier). The output is 2-bit quantised for subsequent signal processing in the digital domain. The GP2015 contains an on-chip synthesiser, mixers, AGC and a quantiser which provides Sign and Magnitude digital outputs. A minimum of external components is required to make a complete GPS front-end. The device has been designed to operate with the GP2021 12-channel Global Positioning Correlator, and DW9255 SAW filter, both also available from Mitel Semiconductor. Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 36 35 34 33 32 31 30 29 28 27 26 25 37 38 39 40 41 42 43 44 45 46 47 48 24 23 22 21 20 GP2015 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 FP48 Name Name IF Output PLL Filter 1 PLL Filter 2 VEE (OSC) VCC (OSC) VEE (OSC) VEE (REG) PRef PReset VEE (IO) CLK N/C N/C MAG SIGN OPCIKOPCIK+ VDD (IO) PDN TEST LD VEE (DIG) AGC AGC + Pin 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 FEATURES s Ultra miniature TQFP package s Low Voltage Operation (3V - 5V) s Low Power - 200mW typ. (3V supply) s C/A Code Compatible s On-chip PLL Including Complete VCO s Triple Conversion Receiver s 48-Lead Surface Mount Quad Flat-Pack Package s Sign and Magnitude Digital Outputs s Compatible with GP2021 CMOS Correlator APPLICATIONS s C/A Code Global Positioning by Satellite Receivers s Time Standards s Navigation s Surveying ORDERING INFORMATION The GP2015 is available in 48 pin TQFP package to Industrial (-40°C to +85°C) grade. N/C VCC (DIG) REF 2 REF 1 VCC (RF) VEE (RF) VEE (RF) RF Input VEE (RF) VEE (RF) VCC (RF) N/C O/P 1O/P 1+ VCC (2) I/P 2I/P 2+ VEE (IF) VEE (IF) O/P 2O/P 2+ VCC (3) I/P 3I/P 3+ Fig. 1 Pin connections - top view RELATED PRODUCTS AND PUBLICATIONS Part DW9255 GP2021 GP2010 GP2015 GPSBuilder-2 Description Data Reference DS3861 DS4057 DS4056 AN4533 DS4004 DS4537 ORDERING CODE GP2015 IG FP1R Industrial - Plastic 48-pin TQFP 35.42MHz SAW Filter Twelve-Channel Correlator GPS receiver RF Front-end Design with the GP2015 Twelve-Channel GPS receiver development system GPSBuilder-2.1 Twelve-Channel GPS development system GP2015 ABSOLUTE MAXIMUM RATINGS (Non-simultaneous) Max. Supply Voltage 7V Max. RF Input +15dBm Max. voltage on any pin VCC/VDD + 0.5V except LD (pin 21) and PReset (pin 9), which are 5.5V Min. voltage on any pin VEE - 0.5V Storage Temperature -65°C to +150°C Operation Junction Temperature -40°C to +150°C 10MHz Reference Input 1.5V pk -pk IF STRIP The input signal to the GP2015 is the GPS L1 signal received via an antenna and a suitable LNA. The L1 input is a spread spectrum signal at 1575.42MHz with 1.023Mbps BPSK modulation. The signal level at the antenna is about -130dBm, spread over a 2.046MHz bandwidth, so the wanted signal is actually buried in noise. The high RF input compression point of the GP2015 means that with subsequent IF filtering it is possible to reject large out of band jamming signals, in particular 900MHz as used by mobile telephones.The on-chip PLL generates the first local-oscillator frequency at 1400MHz. The output of the front-end mixer (Stage 1) at 175.42 MHz can then be filtered before being applied to the second stage. The double-balanced stage 1 mixer outputs are open-collectors, and require external dc bias to VCC. The second stage contains further gain and a mixer with a local oscillator signal at 140 MHz giving a second IF at 35.42 MHz. The second stage mixer is also double-balanced with open-collector outputs requiring external dc bias to VCC. The signal from stage 2 is passed through an external filter with a 1dB bandwidth of 1.9MHz. The performance of this filter is critical to system performance and it is recommended that a SAW filter is used (part number DW9255, also available from Mitel Semiconductor). The output of the filter then feeds the main IF amplifier. This includes 2 AGC amplifiers and a third mixer with a local oscillator signal at 31.111 MHz giving a final IF at 4.309 MHz. There is an on-chip filter after the third mixer which provides filtering centred on 4.309 MHz. The IF output, which has 1kΩ output impedance, is provided for test purposes. All of the signals within the IF amplifier are differential including the filter inputs and outputs, except the IF output (pin 1), to reduce any common mode interference. ESD PROTECTION The GP2015 de.


GP2010 GP2015 GP201MHS18


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