OM13312,598 NXP

SA636 Low voltage high performance mixer FM IF system with high-speed RSSI Rev. 8 8 October 2019 Product data sheet 1. General description 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. SA636DK/02 is identical to SA636DK/01 except that V RSSI output voltage where o(RSSI) IF level = -118 dBm is screened 0.15 V to 0.45 V for applications that work best within this range of operation. 2. Features and benefits Wideband data output (600 kHz minimum) Fast RSSI rise and fall times Low power consumption: 6.5 mA typical at 3 V Mixer input to >500 MHz Mixer conversion power gain of 11 dB at 240 MHz Mixer noise figure of 12 dB at 240 MHz XTAL oscillator effective to 150 MHz (LC oscillator to 1 GHz local oscillator can be injected) 92 dB of IF amp/limiter gain 25 MHz limiter small signal bandwidth Temperature compensated logarithmic Received Signal Strength Indicator (RSSI) with a dynamic range in excess of 90 dB RSSI output internal op amp Internal op amps with rail-to-rail outputs Low external component count suitable for crystal/ceramic/LC filtersSA636 NXP Semiconductors Low voltage high performance mixer FM IF system Excellent sensitivity: 0.54 V into 50 matching network for 12 dB SINAD (Signal-to-Noise And Distortion ratio) for 1 kHz tone with RF at 240 MHz and IF at 10.7 MHz 10.7 MHz filter matching (330 ) Power-down mode (I =200 A) CC ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 Latch-up testing is done to JEDEC Standard JESD78 Class II, Level B 3. Applications DECT (Digital European Cordless Telephone) Digital cordless telephones Digital cellular telephones Portable high performance communications receivers Single conversion VHF/UHF receivers FSK and ASK data receivers Wireless LANs 4. Ordering information Table 1. Ordering information Type number Topside Package mark Name Description Version SA636BS 636B HVQFN20 plastic thermal enhanced very thin quad flat package no leads SOT917-1 20 terminals body 4 4 0.85 mm SA636DK/01 SA636DK SSOP20 plastic shrink small outline package 20 leads body width 4.4 mm SOT266-1 SA636DK/02 SA636DK SSOP20 plastic shrink small outline package 20 leads body width 4.4 mm SOT266-1 4.1 Ordering options Table 2. Ordering options Type number Orderable Package Packing method Minimum Temperature part number order quantity SA636BS SA636BS,115 HVQFN20 REEL 7 Q1 NDP 1500 T = 40 C to +85 C amb SA636DK/01 SA636DK/01,118 SSOP20 REEL 13 Q1 NDP 2500 T = 40 C to +85 C amb SA636DK/02 SA636DK/02J SSOP20 REEL 13 Q1 NDP 2500 T = 40 C to +85 C amb SA636 All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2019. All rights reserved. Product data sheet Rev. 8 8 October 2019 2 of 32