SA1787 SINGLE-CHIP TUNER IC FOR CAR RADIOS DESCRIPTION The SA1787 is a high performance tuner circuit for AM and FM car radio. It integrates mixer, IF amplifier, signal detection circuit and stereo decoder for AM and FM. It achieves stereo tuning with advanced technology and less peripheral components. FEATURES FM-Part QFP-64-14 x 14-0.8 ∗ RF AGC generation for RF and IF detection ∗ I/Q mixer for 1st FM IF 10.7MHz with image rejection ∗ Excellent FM signal meter linearity ∗ MPX integrated in a single chip ∗ Improve FM separation temperature characteristics ∗ Improve FM thermal characteristics APPLICATIONS AM-Part ∗ Car Radios ∗ Wide and narrow AGC generation ∗ Mixer for 1st IF 10.7MHz, AM up conversion ∗ Mixer for 2nd IF 450kHz, AM down conversion ∗ Integrated AM-demodulator ∗ AM IF and audio noise blanking ∗ Improve AM adjacent channel interference characteristics ∗ Improve AM thermal characteristics ORDERING INFORMATION Device Package SA1787 QFP-64-14x14-0.8 Marking SA1787 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 1 of 19 SA1787 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATING Characteristics Maximum Supply Voltage Allowable Power Dissipation Symbol Conditions Ratings Unit VCC1 max Pins 6, 40, and 61 9 V VCC2 max Pins 7, 45, 54, 59, and 60 12 V Ta ≤ 55°C 950 mW Pd max Operating Temperature Topr –40 to +85 °C Storage Temperature Tstg –40 to +150 °C HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 2 of 19 SA1787 OPERATING CONDITIONS Characteristics Symbol Conditions 8 V 5 V 7.5 to 9.0 V 60, and 61 VCCST IND Operating Supply Voltage Range Unit Pins 6, 7, 40, 45, 54, 59, VCC Recommended Supply Voltage Ratings (Pin 26) VCC op ELECTRICAL CHARACTERISTICS (Special for FM IF input test, Ta = 25°C, VCC= 8.0V) Characteristics Symbol Test conditions Min. Typ. Max. Unit No input, I40 + I45 + I54 + I59 + I60 + I61 70 105 120 mA 230 340 420 mVrms 190 305 390 mVrms –1 0 +1 dB 0.3 1 % [FM Characteristics] At The FM IF Input Current Drain Demodulation Output Pin 31 Demodulation Output Channel Balance Total Harmonic Distortion ICCO-FM VO-FM VO-FM31 CB THD-FM mono Signal-To-Noise Ratio: IF S/N-FM IF AM Suppression Ratio: IF AMR IF Att-1 Muting Attenuation Att-2 10.7 MHz, 100dBµ, 1 kHz, 100%mod, output at pin 15 10.7 MHz, 100dBµ, 1 kHz, 100%mod, output at pin 31 The ratio of pins 15 and 16 at 10.7 MHz, 100 dBµ, 1 kHz 10.7 MHz, 100 dBµ, 1 kHz, 100% mod, pin 15 10.7 MHz, 100 dBµ, 1 kHz, 100% mod, pin 15 10.7 MHz, 100 dBµ, 1 kHz, fm = 1 kHz, 30% AM, pin 15 10.7 MHz, 100 dBµ, 1 kHz. Attenuation at pin 15 when V33 changes from 0 to 2 V 10.7 MHz, 100 dBµ, 1 kHz. Attenuation at pin 15 when V33 changes from 0 to 2 V*1 77 84 dB 57 66 dB 5 11 15 dB 15 22 25 dB 28 32 38 dB 30 40 10.7 MHz, 100 dBµ, 1 kHz. Attenuation at Att-3 pin 15 when V33 changes from 0 to 2 V*2 Separation Separation 10.7 MHz, 100 dBµ, L+R = 90%, pilot = 10%. The pin 15 output ratio Stereo on Level ST-ON The pilot modulation, V26<0.5V 1.2 2.4 Stereo off Level ST-OFF The pilot modulation, V26>3.5V 0.6 1.7 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 dB 4.4 % % 2008.08.29 Page 3 of 19 SA1787 Characteristics Main Total Harmonic Distortion Symbol THD-Main L Test conditions Min. 10.7 MHz, 100 dBµ, L+R = 90%, pilot = 10%. Signal at pin 15 Typ. Max. Unit 0.2 1.2 % 10.7 MHz, 100 dBµ, pilot = 10%. Pilot Cancellation PCAN The pin 15 signal/the pilot level leakage. 20 30 dB 1 6 9 dB 0.5 4.5 8.5 dB 6 10 14 dB 33 40 47 dBµ 27 35 43 dBµ 54 63 70 dBµ 54 62 70 dBµ 120 170 250 mVrms 0.0 0.2 0.4 V 0.4 1.3 1.6 V 2.0 2.7 3.5 V 4.7 5.0 5.5 V 150 220 290 kHz 0.00 0.10 0.20 V 79 88 99 dBµ DIN audio 10.7 MHz, 100 dBµ, L-R = 90%, pilot = SNC Output Attenuation AttSNC 10%. V28 = 3 V Æ 0.6 V, pin 15 10.7 MHz, 100 dBµ, 10 kHz, L+R = 90%, AttHCC-1 pilot = 10%. V29 = 3 V Æ0.6 V, pin 15 HCC Output Attenuation AttHCC-2 10.7 MHz, 100 dBµ, 10 kHz, L+R = 90%, pilot = 10%. V29 = 3 VÆ0.1 V, pin 15 100 dBµ, 10.7 MHz, 30% modulation. Input Limiting Voltage Vi-lim The IF input, output voltage reduces by 3 dB Muting Sensitivity Vi-mute The IF input level (unmodulated) when V33 = 2 V The IF input level (unmodulated) (over SD Sensitivity SD-sen1 FM 100 mV rms) , the IF counter buffer output is turned on SD-sen2 FM IF Counter Buffer Output VIFBUFF-FM VSM FM-1 VSM FM-2 Signal Meter Output VSM FM-3 VSM FM-4 Muting Bandwidth BW-mute Mute Drive Output VMUTE-100 10.7 MHz, 100 dBµ, unmodulated. Output at pin 23 No input. DC output at pin 24, unmodulated 50 dBµ. DC output at pin 24, unmodulated 70 dBµ. DC output at pin 24, unmodulated 100 dBµ. DC output at pin 24, unmodulated 100 dBµ. The bandwidth when V33 = 2 V, unmodulated 100 dBµ, 0 dBµ. DC output at pin 33, unmodulated [FM FE Mixer Input] 83 MHz, unmodulated. N-AGC on Input VN-AGC The input such that the pin 2 voltage is 2.0 V or below HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 4 of 19 SA1787 Characteristics Symbol Test conditions Min. Typ. Max. Unit 104 110 116 dBµ 19 30 48 mVrms 85 110 165 mVrms 83 MHz, unmodulated. The input such W-AGC on Input VWAGC that the pin 2 voltage is 2.0 V or below. (When the keyed AGC is set to 4.0 V.) Conversion Gain Oscillator Buffer Output A.V 83 MHz, 80 dBµ, unmodulated. output at The FE CF VOSCBUFFF No input [NC Block] NC Input (Pin 30) Gate Time τGATE1 f = 1 kHz, for a 1-µs, 100-mV p-o pulse 55 µs 40 mVp-o The level of a 1 kHz, 1-µs pulse input that Noise Sensitivity SN starts noise canceller operation. Measured at pin 30. The pulse rejection effect provided by the noise canceller. NC Effect SN-NC For a repeated 1-µs pulse, frequency = 10 kHz, 150 mV p-o. The ratio of outputs 5 at pin 15 in FM mode and in AM mode (effective value) [Multipath Rejection Circuit] MRC Input (Pin 27) MRC Output MRC Operating Level VMRC MRC-ON V24 = 5 V The pin 32 input level at f = 70 kHz, voltage at pin 24 is 5V and pin 27 is 2V 2.2 2.3 2.4 V 10 15 20 mVrms [AM Characteristics] AM ANT Input Practical Sensitivity S/N-30 Detector Output VO-AM Pin 31 Detector Output VO-AM31 1 MHz, 30 dBµ, fm = 1 kHz, 30% modulation, pin 15 1 MHz, 74 dBµ, fm = 1 kHz, 30% modulation, pin 15 1 MHz, 74 dBµ, fm = 1 kHz, 30% modulation, pin 31 20 dB 130 195 270 mVrms 110 175 230 mVms 51 56 61 dB 47 52 1 MHz, 74 dBµ, referenced to the output, Agc F.O.M. Signal-To-Noise Ratio VAGC-FOM S/N-AM Total Harmonic Distortion THD-AM Signal Meter Output Oscillator Buffer Output the input amplitude such that the output falls by 10 dB. Pin 15 1 MHz, 74 dBµ, fm = 1 kHz, 30% modulation 1 MHz, 74 dBµ, fm = 1 kHz, 80% modulation 0.3 1 % VSM AM-1 No input 0.0 0.4 0.7 V VSM AM-2 1 MHz, 130 dBµ, unmodulated 4.8 6 7.3 V VOSCBUFF No input 185 230 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn dB REV:1.0 mVrms 2008.08.29 Page 5 of 19 SA1787 Characteristics Wide Band AGC Sensitivity Symbol W-AGCsen1 1.4 MHz, the input when V46 = 0.7 V W-AGCsen2 SD-sen1 AM SD Sensitivity SD-sen2 AM IF Buffer Output Note: Test conditions VIFBUFF-AM 1.4 MHz, the input when V46 = 0.7 V (seek mode) 1 MHz, the ANT input level such that the IF counter output turns on. 1 MHz, the ANT input level such that the SD pin goes to the on state. 1 MHz, 74 dBµ, unmodulated. No modulation. Output at pin 23 Min. Typ. Max. Unit 91 97 105 dBµ 83 90 95 dBµ 25 31 36 dBµ 25 31 36 dBµ 170 260 mVrms * 1. When the resistor between pin 58 and ground is 200 kΩ. * 2. When the resistor between pin 58 and ground is 30 kΩ. PIN CONFIGURATION HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 6 of 19 SA1787 PIN DESCRIPTION Pin No. Pin Name I/O 1 ANT D O 2 RF AGC O 3 F.E.GND I/O Ground of AM/FM front end 4 OSC I/O Oscillator connection for FM 1st Mixer O AM/FM oscillator buffer output 5 6 7 8 AM/FM OSC BUFF VCC AM/FM SW AM OSC Noise AGC Sen I/O I/O I Descriptions An antenna damping current for FM pin diode drive output RF AGC voltage to control the LNA second gate. AGC is applied at the voltage of Vcc-Vbe. V6=8VÆFM and pin6 is FM front end VCC V6=openÆAM AM first oscillator for up conversion This circuit can oscillator up to the SW band. Noise sensitivity setting pin for setting up the medium field(about 50 dBµ) 9 AGC ADJ I The AGC Dynamic Range adjustment pin for 20 to 30dBµ 10 AM 2nd OSC O Oscillator circuit for AM 2nd Mixer 11 Memory I/O 12 Memory I/O 13 Pilot IN I 14 GND I/O 15 MPX OUT (L) O 16 MPX OUT (R) O 17 Pilot OUT O 18 Pilot OUT O Memory circuit for noise canceller operation. The PLL circuit MPX signal input pin. Ground for the N.C., MPX, and MRC circuits. MPX output Output pin for the pilot canceller signal. The resistor and capacitor between pin17 and pin18 need to be adjusted with the sample-to-sample variations. The input level of subdecoder is varied through the resistor and 19 Sep ADJ I capacitor outside. (The output level of MONO and MAIN remain unchanged) 20 VCO I/O Attach a 912KHz crystal oscillator outside. 21 PHASE COMP. I/O Pilot phase detector 22 PHASE COMP. I/O Pilot phase detector In seek mode, pin23 is FM/AM IF counter buffer. Also, pin23 functions as switch: In FM mode: 23 IF Counter SK/ST SW Pin23 = 5V: Seek mode I/O Pin23 = 2.5V: Forced SD mode Pin23 = 0 V: Reception mode In AM mode: Pin23 = 5 V: Seek mode Pin23 = 0 V: Reception mode HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 7 of 19 SA1787 Pin No. Pin Name I/O Descriptions 24 AM/FM SM O AM/FM S-meter voltage output 25 GND I/O Ground for FMIF and AM In FM mode: Pin23 = 5V: pin26 operates linked to the IF counter buffer. Pin23 = 2.5V: pin26 operates as the SD pin. 26 Stereo IND O Pin23 = 0 V: pin26 operates as stereo indicator. In AM mode: Pin23 = 5 V: pin 26 operates as the seek SD pin. Pin23 = 0 V: pin26 is not used. 27 MRC O The MRC detector time constant for Multipath-Noise Detector. The time is determined by a 100Ω resistors and capacitor. With the pin28 input voltage, the attenuation of (L-R) decode is 28 SNC I controlled, such as decrease sepatation and reduce the noise felt in the stereo mode. The pin29 can be controlled by the MRC output. 29 HCC I The pin29 can also be controlled with the pin 32 , using an external resistors at least 100 kΩ. At weak input, high pass is cut to reduce the noise feeling. 30 Noise Cancel I Noise canceller input. The input impedance is 50 kΩ. AM and FM detector output. 31 AM/FM Det O Output impedance Low impedance in the FM mode and 10 kΩ in the AM mode Pin32 is for NC noise extraction and for multipath noise extraction. 32 IF S-meter and MRC O Attenuate the MRC AC input by adjust the resistor outside. In AM mode, pin 32 outputs a 1-mA current. Thus the HCC circuit is turned off. The muting time constant is determined as follows by CR: Attack time: TA = 10 kΩ * C1 Release time: 33 Mute Driver O TR = 50 kΩ* C1 Noise convergence adjustment Muting off function MUTE is turned OFF when pin 33 is shorted circuited through a 4-kΩ resistor with GND. A resistor R should be connected between pin34 and pin37; 34 AGC I/O R determines the bandwidth of the muting function. Narrows the band by increasing the value of R. Widens the band by reducing the value of R. 35 QD OUT O Detector output 36 QD IN I Detector input HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 8 of 19 SA1787 Pin No. Pin Name I/O 37 VREF O 38 SD ADJ I/O Descriptions V37 = 4.9V The SD comparison voltage is determined with the external resistance R and the current flow at pin 38. When the voltage of V24*0.36 becomes lower than the voltage 39 Key AGC AM Buffer I/O determined by the resistor between pin 39 and ground, the keyed AGC is turned on. The pin39 is also used as the AM stereo IF buffer pin. 40 VCC I/O 41 HCC Cap O VCC for FMIF and AM NC MPX With pin 41 external capacitor High-Cut frequency characteristics are set. Frequency characteristics of unnecessary voice band of 100Hz or less is changed to produce the clear sound in the AM mode. Note: The LC capacitor must be connected between the pin42 and 42 AM L.C. I/O VCC This is because the detector circuit operates referenced to VCC. AM LC f characteristic: fC = 1/2π*50 k Ω* C 43 Pilot Det O Inserting a 1-MΩ resistor between pin 43 and VCC causes the forced mono mode. Time constant changeover at Seek switch. • Reception Time constant depends on the external capacitor of pin 44: 44 IF AGC O C44*300kΩ • Seek Time constant is: C44*10Ω 45 46 47 IF OUT AM ANT D WB-AGC Mute ADJ O O I The IF amplifier load I46 = 6mA (maximum) An antenna damping current for AM pin diode drive output Muting on level can be changed by modify the value of the external resistor RF AGC rectifier capacitor。 48 AGC Bypass O Determination of the distortion radio during low-frequency modulation: Increasing C48 and C57 : DistortionÆimproved ResponseÆslow 57 RF AGC O Reducing C48 and C57 : DistortionÆworse ResponseÆquick 50 IF Bypass I 51 FM IF IN I Choose IF bypass capacitor to GND to prevent the limiter AMP from osillation FM 10.7M AMP input HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 9 of 19 SA1787 Pin No. 52 53 56 Pin Name AM IF IN AM/FM IF OUT AM/FM IF IN I/O I Descriptions AM 450kHz AMP input input impedance=2 kΩ. AM/FM 10.7M first IF AMP output. O Output impedance=330Ω V53=5.3V AM/FM 10.7M first IF AMP input I Input impedance = 330Ω V56=2.0V 54 Mixer OUT O 49 Mixer IN I AM 2nd Mixer OUT (The coil of pin 54 must be connected to the pin40) AM 2nd Mixer IN (The pin 49 mixer input impedance is 330Ω) Include built-in DC cut capacitors. Determination of the AGC on level is by the values of the capacitors 55 W-AGC SD ADJ I/O attached to this pin In AM mode, pin55 is SD sensitivity adjustment pin by comparing V55 with the S-meter voltage V55 = R55*50uA Include built-in DC cut capacitors. 58 59，60 N-AGC Mute ADJ I/O Determination of the AGC on level is by the values of the capacitors attached to this pin Mixer OUT O AM/FM 1st mixer output 61 F.E.VCC I/O VCC for front end 62 1st MIX IN I AM first mixer input The input impedance=10 kΩ. AM/FM 1st mixer input. This is an emitter insertion type input circuit, and the amount of 63，64 Mixer IN I insertion is determined by the capacitors C63 and C64. (The lines for pins 63 and 64 must be kept separated from the lines for pins 59 and 60) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 10 of 19 SA1787 FUNCTION DESCRIPTION 1. FM Front End Oscillator Figure 1 shows the type of oscillator circuit used in this IC. Figure 1 Figure 2 shows the type of FM first IF amplifier used in this IC. Figure 2 Input impedance: 330 Ω Output impedance: 330Ω Gain: 20 dB 2. FM IF Figure 3 shows an overview of the FM SD and the IF count buffer. Figure 3 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 11 of 19 SA1787 Figure 4 shows the relationship between the FM SD, the IF count buffer output, the S-meter, and the muting drive output. Figure 4 3. AM SD and the IF buffer are operated by comparing the S-meter level (V24) and the 5 V reference voltage as shown in figure 5. Figure 5 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 12 of 19 SA1787 Figure 6 shows the relationship between the AM SD, the IF count buffer, and the S-meter. Figure 6 AM high band cut and detector output level adjustment methods Figure 7, the pin 31 AM and FM tuner output has an impedance of 10 kΩ in AM mode and a few tens of Ohms in FM mode. Therefore, R31 is used to lower the AM detector output level and C31 determines the AM high band frequency characteristics. Figure 7 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 13 of 19 SA1787 AM stereo system pins is shown in Figure 8 VCC GND To the AM stereo decoder 400mV rms IFT 450kHz output 45 39 VCC 50pF Keyed AGC 150 IF AMP Figure 8 AM low band cut adjustment method The AM low band frequency characteristics can be adjusted with C42, which is inserted between pin 42 and VCC. Since the detector is designed with VCC as the reference, C42 must be connected to VCC, shown in figure 9. + Figure 9 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 14 of 19 SA1787 Pilot canceller adjustment (pins 17 and 18) Figure 10 The pilot canceller signal waveform (pin 19) is a 19 kHz signal that not contains third harmonic as shown in figure 10. Since this signal has the same phase as the pilot signal, no capacitor is required between pin 18 and ground. Since it has no third harmonic component, excellent pilot cancellation can be acquired in both the left and right channels by adjusting with a variable resistor. Separation adjustment (pin 19) Figure 11 The separation is adjusted by modifying the input level to the subdecoder with the variable resistor connected to pin 19. Since only the sub-modulation level is changed by changing the variable resistor setting, the monaural (main) output level is not changed. Furthermore, degradation of high band separation in the decoder can be avoided if the impedance of the external capacitor (C) in the subchannel frequency band (23 to 53 kHz) is made sufficiently smaller than the variable resistor. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 15 of 19 SA1787 INPUT CIRCUITS FOR EACH STAGE FM Mixer input First IF input IF input AM First mixer input Second mixer input IF input Del input IFT 50 ~ 0.022 F 50 52 50 fr=450kHz HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn ~ 0.022 F 45 50 fr=450kHz REV:1.0 2008.08.29 Page 16 of 19 + 50 15pF 65pF VD6 JIS DUMMY 30 0.022 F 6.8mH 100 H FC 18 47 F AC1 SG1 + ANTD 0.022 F 1.6k 100k 25 1000 F SW7 SW8 510 100 H 50k 50 1mH 0.022 F 30k 30 200k 18pF AM SD ADJ FM IF OUT 200 k 50 B FM IF IN SW3 FM FM GND VCC 5pF VD1 5pF FEVCC MUTE ATT 10pF FE IF IN FM WB AGCIN AM MIX OUT AM IF IN 0.022 F SW2(i) A MIX 180k 7 40 SA1787 41 10 39 11 38 12 37 13 36 14 35 15 34 16 33 30 31 ANT D 64 63 62 8 9 VT VA1 10 F VA6 VCC 10.26MHz 3pF SW10 AM OSC 8V VA9 10 F VCC 6800pF 0.01 F VA7 LEFT CH RIGHT CH MPX OUT 17 18 19 20 21 60 23 22 61 0.47 F S-METER 24 AM/FM 25 59 58 57 56 GND SNC HCC NC-IN AM LEVEL ADJ 20k 20k 3pF 0.01 F PI.CAN ADJ 100k SEP ADJ SW9 0.047 F CSB912JF108 VCC2 VD3 NC-IN 100k A SW5 SW6 VCC2 VA8 VA3 VCC1 5V VD2 VD4 SNC HCC VCC3 PG1(AC1) AC5 0.022 F 8V VD5 MRC-IN + 1 F 4.3k 8V VCC 8200pF AM HC 1 F B SW4(T) FM S-METER DET OUT 32 26 6 42 0.1 F 55 5 43 10k 0.47 F 27 4 44 1 F 54 OSC 45 0.22 F 28 3 46 22k 53 2 47 0.1 F QD IN 29 1 48 0.22 F AMLC 240k AFC IN 52 51 50 49 3.3 F 0.022 F + 100 0.022 F 15k RF AGC 100 330 MUTE or ADJ FF GND 1 F 0.022 F 20pF AC3 SG3 IF7 5pF 30k IF IN 0.022 F 300 0.022 F 30 100 F 10k 3pF 2200pF CHCC 0.01 F 10k SW1 8V 300pF 1M 39pF 100k 6.8k 0.47 F 330 KEYED AGC 1M 50 20k FM SD ADJ. 10k VA2 25pF VREF 0.022 F IF OUT 10k 0.022 F 2.2 F 20pF QD OUT N.C.MPX GND MUTE DRIVE 0.015 F REV:1.0 0.015 F 5.6k 1 F 1 F 100k 100k 50k 50k 10k 0.22 F Http://www.silan.com.cn 1M HANGZHOU SILAN MICROELECTRONICS CO.,LTD 10k VCC GND SA1787 TEST CIRCUIT 2008.08.29 Page 17 of 19 AC2 SG2 SA1787 TYPICAL APPLICATION CIRCUIT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 18 of 19 SA1787 PACKAGE OUTLINE QFP-64-14x14-0.8 UNIT: mm Note: Silan reserves the right to make changes without notice in this specification for the improvement of the design and performance. Silan will supply the best possible product for customers. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.0 2008.08.29 Page 19 of 19