SA636: Low voltage high performance mixer FM IF system with high-speed RSSI

The SA636 is a low-voltage high performance monolithic FM IF system with high-speed RSSI incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, logarithmic Received Signal Strength Indicator (RSSI), voltage regulator, wideband data output and fast RSSI op amps. The SA636 is available in 20-lead SSOP (Shrink Small Outline Package) and HVQFN20 (quad flat package).

The SA636 was designed for high bandwidth portable communication applications and will function down to 2.7 V. The RF section is similar to the famous SA605. The data output has a minimum bandwidth of 600 kHz. This is designed to demodulate wideband data. The RSSI output is amplified. The RSSI output has access to the feedback pin. This enables the designer to adjust the level of the outputs or add filtering.

SA636 incorporates a power-down mode which powers down the device when POWER_DOWN_CTRL pin is LOW. Power-down logic levels are CMOS and TTL compatible with high input impedance.

Outline 3d SOT917-1
Data Sheets (1)
Name/DescriptionModified Date
Low voltage high performance mixer FM IF system with high-speed RSSI (REV 7.0) PDF (2.0 MB) SA63616 Jun 2016
Application Notes (1)
Name/DescriptionModified Date
FM/IF systems for SMSK/GFSK receivers (REV 2.0) PDF (983.0 kB) AN199718 Aug 2014
Brochures (1)
Name/DescriptionModified Date
RF/IF building blocks for niche handheld devices (REV 1.0) PDF (3.5 MB) 7501754803 Sep 2014
Package Information (2)
Name/DescriptionModified Date
plastic shrink small outline package; 20 leads; body width 4.4 mm (REV 1.0) PDF (329.0 kB) SOT266-108 Feb 2016
plastic thermal enhanced very thin quad flat package; no leads; 20 terminals (REV 1.0) PDF (173.0 kB) SOT917-108 Feb 2016
Packing (1)
Name/DescriptionModified Date
SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (222.0 kB) SOT266-1_11815 Apr 2013
Supporting Information (1)
Name/DescriptionModified Date
Footprint for wave soldering (REV 1.0) PDF (16.0 kB) SSOP-TSSOP-VSO-WAVE08 Oct 2009
Ordering Information
ProductStatusPackage nameRF-IF functionRF frequency [max] (MHz)IF bandwidth [max]VCC [min] (V)VCC [max] (V)ICC [max] (mA)Mixer gain [min] (dB)Mixer Noise Figure [typ] (dB)12 dB SINAD fdev=125 kHz (dBm)RSSI dynamic range [typ] (dB)
SA636BSActiveHVQFN20Single conversion receiver500252.75.57.5@3 V812@240 MHz-11190
SA636DKNo Longer ManufacturedSSOP20Single conversion receiver500252.75.57.5@3 V812@240 MHz-11190
Package Information
Product IDPackage DescriptionOutline VersionReflow/Wave SolderingPackingProduct StatusPart NumberOrdering code(12NC)MarkingChemical ContentRoHS / Pb Free / RHFLeadFree Conversion DateEFRIFR(FIT)MTBF(hour)MSLMSL LF
SA636BSSOT917-1Reel 7" Q1/T1ActiveSA636BS,115 (9352 964 37115)Standard MarkingSA636BSAlways Pb-free0.02.05E811
SA636DK/01SOT266-1SSOP-TSSOP-VSO-WAVEReel 13" Q1/T1ActiveSA636DK/01,118 (9352 752 92118)SA636DKSA636DK/01Always Pb-free0.02.05E811
Bulk PackActiveSA636DK/01,112 (9352 752 92112)SA636DKSA636DK/01Always Pb-free0.02.05E811
Low voltage high performance mixer FM IF system with high-speed RSSI SA636
FM/IF systems for SMSK/GFSK receivers SA636
RF/IF building blocks for niche handheld devices SA639DH
plastic thermal enhanced very thin quad flat package; no leads; 20 terminals SA636
plastic shrink small outline package; 20 leads; body width 4.4 mm SA636
SSOP-TSSOP-VSO-WAVE LPC1114FDH28
SSOP20; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... SA636
SA636
SA636
SA636