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1. general description the sa604a is an improved mono lithic low-power fm if system incorporating two limiting intermediate frequency amplifiers, quadrature detector, muting, logarithmic received signal strength indicator, and voltage regulator. the sa604a features higher if bandwidth (25 mhz) and temperature compensated rssi and limiters providing wide rssi dynamic range, high if/limiter gain and overall stab ility. the sa604a is available in an so16 (surface-mounted miniature) and hxqfn16 package. 2. features and benefits ? low power consumption: 3.3 ma typical ? temperature compensated logarithmic receiv ed signal strength indicator (rssi) with a dynamic range in excess of 90 db ? two audio outputs ? muted and un-muted ? low external component count; suit able for crystal/ ceramic filters ? excellent sensitivity: 1.5 ? v across input pins (0.22 ? v into 50 ? matching network) for 12 db sinad (signal-to-noise an d distortion ratio) at 455 khz ? sa604a meets cellular radio specifications 3. applications ? cellular radio fm if ? high-performance communications receivers ? intermediate frequency amplification and detection up to 25 mhz ? rf level meter ? spectrum analyzer ? instrumentation ? fsk and ask data receivers sa604a high-performance low -power fm if system rev. 4.1 ? 30 march 2015 product data sheet
sa604a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights rese rved. product data sheet rev. 4.1 ? 30 march 2015 2 of 31 nxp semiconductors sa604a high-performance low-power fm if system 4. ordering information 4.1 ordering options table 1. ordering information type number topside marking package name description version sa604ad/01 sa604ad so16 plastic small outline package; 16 leads; body width 3.9 mm sot109-1 sa604ahr 04a hxqfn16 plastic thermal enhanc ed extremely thin quad flat package; no leads; 16 terminals; body 3 ? 3 ? 0.5 mm sot1039-2 table 2. ordering options type number orderable part number package packing method minimum order quantity temperature sa604ad/01 sa604ad/01,112 so16 standard marking * ic?s tube - dsc bulk pack 1000 t amb = ? 40 ? c to +85 ? c sa604ad/01,118 so16 reel 13? q1/t1 *standard mark smd 2500 t amb = ? 40 ? c to +85 ? c sa604ahr sa604ahrz hxqfn16 reel 7? q2/t3 *standard mark smd 1500 t amb = ? 40 ? c to +85 ? c sa604a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights rese rved. product data sheet rev. 4.1 ? 30 march 2015 3 of 31 nxp semiconductors sa604a high-performance low-power fm if system 5. block diagram pin numbers for so16; hxqfn16 pins shown in parentheses fig 1. block diagram of sa604a aaa-012738 voltage regulator signal strength indicator 1(14) 2(15) 3(16) 4(1) 5(2) 6(3) 7(4) 8(5) 16(13) 15(12) 14(11) 13(10) 12(9) 11(8) 10(7) 9(6) gnd v cc gnd mute if amp limiter quadrature detector if_amp_input if_amp_decoupl if_amp_output limiter_input limiter_decoupl limiter_decoupl limiter_output if_amp_decoupl mute_input rssi_output mute_aud_outp unmute_aud_outp quadrature_input sa604a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights rese rved. product data sheet rev. 4.1 ? 30 march 2015 4 of 31 nxp semiconductors sa604a high-performance low-power fm if system 6. pinning information 6.1 pinning fig 2. pin configuration for so16 (1) die attach paddle (dap). fig 3. pin configuration for hxqfn16 sa604ad/01 if_amp_decoupl if_amp_input gnd if_amp_decoupl mute_input if_amp_output v cc gnd rssi_output limiter_input mute_aud_outp limiter_decoupl unmute_aud_outp limiter_decoupl quadrature_input limiter_output aaa-012737 1 2 3 4 5 6 7 8 10 9 12 11 14 13 16 15 aaa-016798 sa604ahr (1) transparent top view unmute_aud_outp limiter_input mute_aud_outp gnd rssi_outp if_amp_output v cc if_amp_decoupl quadrature_input limiter_output limiter_decoupl limiter_decoupl mute_input gnd if_amp_decoupl if_amp_input 4 9 3 10 2 11 1 12 5 6 7 8 16 15 14 13 terminal 1 index area sa604a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights rese rved. product data sheet rev. 4.1 ? 30 march 2015 5 of 31 nxp semiconductors sa604a high-performance low-power fm if system 6.2 pin description [1] hxqfn16 package supply ground is connected to both g nd pin and exposed center pad. gnd pin must be connected to supply ground for pr oper device operation. for enhanced thermal, electrical, and board level performance, the exposed pad must be solder ed to the board using a corresponding thermal pad on the board. for proper heat conduction through the board, thermal vias must be incorporated in the pcb in the thermal pad region. table 3. pin description symbol pin description so16 hxqfn16 if_amp_decoupl 1 14 if amplifier decoupling gnd 2 15 ground mute_input 3 16 mute input v cc 4 1 supply voltage rssi_output 5 2 rssi output mute_aud_outp 6 3 mute audio output unmute_aud_outp 7 4 unmute audio output quadrature_input 8 5 quadrature input limiter_output 9 6 limiter output limiter_decoupl 10 7 limiter decoupling limiter_decoupl 11 8 limiter decoupling limiter_input 12 9 limiter input gnd 13 10 [1] ground if_amp_output 14 11 if amplifier output if_amp_decoupl 15 12 if amplifier decoupling if_amp_input 16 13 if amplifier input - - dap exposed die attach paddle xxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx x xxxxxxxxxxxxxx xxxxxxxxxx xxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxx xxxxxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxx x x sa604a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights rese rved. product data sheet rev. 4.1 ? 30 march 2015 6 of 31 nxp semiconductors sa604a high-performance low-power fm if system 7. functional description fig 4. equivalent circuit d d d n ) 8 / / : $ 9 ( 5 ( & |