PDF CXA3355ER Data sheet ( Hoja de datos )

Número de pieza	CXA3355ER
Descripción	GPS Down Converter IC
Fabricantes	Sony
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No Preview Available ! GPS Down Converter IC CXA3355ERwww.DataSheet4U.com Description The CXA3355ER is an IC developed as a GPS RF down converter. This IC realizes a reduction in the number of external parts by integrating an LNA, image rejection mixer, IF filter, PLL and VCO (L, C) into a small package with low current consumption. 44 pin VQFN (Plastic) Features • Includes all functions required for the GPS down converter • Low voltage operation: VCC = 1.6 to 2.0V • Low current consumption (active mode): 11mA (Typ. at VCC = 1.8V, IF ≈ 1MHz) • Low current consumption (power save mode) < 1µA • Total gain ≈ 100dB • Total NF ≈ 4dB • On-chip VCO and PLL • Supports typical TCXO frequencies (13MHz, 16.368MHz, 18.414MHz, etc.) • On-chip LNA (LNA NF: 2.0dB) • Image rejection mixer • On-chip IF filter, and an external filter can be connected as an option for further band narrowing. • 1-bit IF output • Antenna sense function Absolute Maximum Ratings (Ta = 25°C) • Supply voltage VCC1 –0.2 to +2.5 V VCC2 –0.2 to +3.6 V VCC3 –0.2 to +3.6 V • Operating temperature Topr –40 to +85 °C • Storage temperature Tstg –65 to +150 °C Recommended Operating Conditions Supply voltage VCC1 1.6 to 2.0 VCC2 1.6 to 3.3 VCC3 2.7 to 3.3 V V V Applications GPS down converter IC Structure SiGe BiCMOS monolithic IC Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. –1– E04156-PS 1 page Pin No. Symbol Standard pin voltage [V] DC AC Equivalent circuit VCC1 (PLL) CXA3355ER www.DataSheet4U.com Description 17 LPF 1.2 — 17 PLL loop filter connection. 18 GND GND (PLL) 0— VCC1 (RF) GND. 19 C_VCO 1.1 — 19 Capacitor connection for decoupling the VCO bias circuit. GND (RF) VCC1 (RF) 20 VCO_I 0.1 — 20 Capacitor connection for decoupling the VCO bias circuit. 21 GND (LNA) 22 GND (LNA) 23 GND (LNA) 0 0 0 — — — 24 LNA_IN 0.8 — 27 LNA_OUT 1.8 24 — GND (RF) LNA block GND. LNA block GND. LNA block GND. VCC1 (LNA) 27 LNA input. LNA output. GND (LNA) –5– 5 Page Electrical Characteristics Measurement Circuit CXA3355ER www.DataSheet4U.com RF_IN 18n 12n 3.3p 12p LNA_OUT VCC1 (LNA) 100p 1p 3.9n 3p LNA_IN 50Ω matching condition 2.7p 4.7n 12p 33 32 31 30 29 28 27 26 25 24 23 10p VCC1 (RF) 34 VCC1 (RF) 35 VCC1 (RF) TESTIN Buffer 36 TESTINP 37 TESTINN TESTOUT Buffer 38 TESTOUTP 39 TESTOUTN VCC1 (IF) 0.1µ 40 VCC1 (IF) 1n 41 GND (IF) 33k 42 R_EXT1 VCC2 (IF) 43 ENABLE 39k 44 R_EXT2 GND (LNA) 22 GND (LNA) 21 0.1µ VCO_I 20 0.1µ C_VCO 19 GND 18 LPF 17 VCC1 (PLL) 16 GND (PLL) 15 TCXO 14 24k 100p VCC1 (PLL) 8p VCC1 (PLL) 10p 10n TCXO input level: 0.2 to 1.2Vp-p CLK_OUT 13 CLK_OUT LT 12 ENABLE pin VCC2 (IF): Active mode GND: Power save mode 123 DIAG 4 5 6 7 8 9 10 11 18n DATA_OUT Bus Control 1n ANT VCC2 (IF) ∗ The RF block bypass capacitors should have excellent high frequency characteristics. ∗ Use parts with a tolerance of ±1% for the following resistor elements. Other parts should have a tolerance of ±5%. • Pin 17 (LPF) • Pin 42 (R_EXT1) • Pin 44 (R_EXT2) – 11 – 11 Page

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