SA1135 AM RADIO IC FOR DIGITAL TUNING SYSTEM DESCRIPTION The SA1135 is a high-performance AM electronic tuner IC. It is especially suited for use in car radio and home stereo applications. FEATURES DIP-20-300-2.54 * Excellent cross modulation characteristics: Meets the requirements for preventing not only adjacent-channel interference but also interference caused by all channels within broadcast band. * Narrow-band signal meter output: Usable as auto search stop signal. SOP-20-300-1.27 * Local oscillation buffer output: Facilitates designing of electronic tuner system, etc. * Good characteristics at high input: 130 dBµ input fm = 400 Hz 80% ORDERING INFORMATION mod THD = 0.4% typ. Device * Low noise: Good S/N at medium input (56 dB typ.) * Usable sensitivity Package SA1135 DIP-20-300-2.54 SA1135S SOP-20-300-1.27 APPLICATIONS * Car radio , home stereo, etc BLOCK DIAGRAM ABSOLUTE MAXIMUM RATING (Tamb=25°C) Characteristics Symbol Rating Unit VCC max 16 V Output Voltage VO 24 V Input Voltage VIN 5.6 V Maximum Supply Voltage HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.02.01 Page 1 of 7 SA1135 (To be continued) (Continued) Characteristics Symbol Rating Unit Current Drain ICC 41 mA Flow-Out Current I18 2 mA Flow-Out Current I20 2 mA Pd max 730 mW Allowable Power Dissipation Operating Temperature Topr –20 to +70 °C Storage Temperature Tstg -40 to +125 °C ELECTRICAL CHARACTERISTICS (VCC=8V, fr =1MHz, fm =400Hz, Tamb=25°C ) Characteristics Recommended Supply Voltage Operating Supply Voltage Range Current Drain Detection Output Signal-To-Noise Ratio Total Harmonic Distortion Signal Meter Output Input At Signal Meter Output 1V Local Oscillation Buffer Output Symbol Test condition Min. VCC Typ. Max. Unit 12 V 32.5 mA 8 VCCop 7.5 13.5 22.5 V ICC1 Quiescent ICC2 130dBµ input 20.0 30.0 41.0 mA VO1 16dBµ input, 30% mod -29.0 -25.0 -21.0 dBm VO2 74dBµ input, 30% mod -15.0 -12.0 -9.0 dBm 51.0 56.0 S/N 74dBµ input, 30% mod THD1 74dBµ input, 30% mod 0.3 1.0 dB % THD2 74dBµ input, 80% mod 0.3 1.0 % 0.4 2.0 % 0 0.3 V THD3 130dBµ input, 80% mod VSM1 Quiescent VSM2 130dBµ input 3.5 5.0 7.5 V VIN1 VSM=1V 18.0 24.0 30.0 dBµ 320 380 Min. Typ. VOSCBUF mVrms REFERENCE CHARACTERISTICS Characteristics Usable Sensitivity Symbol Q.S. Test condition Input at S/N = 20 dB Max. Unit 25.0 dBµ 82.0 dBµ Input 74 dBµ→130 dBµ 0.2 dB VOSCL – VOSCH 15 mVrms ±1.5 kHz -4.5/+7 kHz (2SK315 IDDS = 11 mA) Reception 1.0 MHz quiescent Interference 1.4 MHz non-mod Wide-Band AGC ON-State Input at input for AMT.D. ON Detection Output Variation Local Oscillation Variation Within Broadcast Band ∆VO ∆VOSC VSM-BW1 Signal Meter Band * VSM-BW2 74 dBµ input, frequency at which output is reduced to 1/2 74 dBµ input, frequency at which output is reduced to 1/10 30 % mod ±10 kHz * Selectivity 43 dB IF Interference IF. R. fr = 600 kHz * 77.5 dB Image Frequency Interference IM. R. fr = 1400 kHz * 52.0 dB HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.02.01 Page 2 of 7 SA1135 Note: *: Wide-band AGC OFF OSCBUFOUT OSC VREG IFAGCIN SMOUT SMfilter VCC2 DETOUT GND2 DETIN PIN CONFIGURATIONS 20 19 18 17 16 15 14 13 12 11 2 3 4 5 6 7 8 9 10 RFAGCfilter ANTdamping GND1 AGCIN2 MIXOUT VCC1 IFIN IFOUT RFAGC 1 AGCIN1 SA1135 PIN DESCRIPTIONS Pin no. Pin name 1 RFAGC RFAGC Description 2 AGCIN1 Detecting an undesired signal outside the RF band 3 RFAGCfilter Connected to capacitor 4 ANTdamping ANTdamping 5 GND1 6 AGCIN2 Detecting an undesired signal within the RF band 7 MIXOUT Out of mixer 8 VCC1 9 IFIN 10 IFOUT Out of IF amp 11 DETIN In of detector 12 GND2 Gnd of IF, DET, SM 13 DETOUT 14 VCC2 15 SMfilter Connected to resistor and capacitor 16 SMOUT Out of s-meter 17 IFAGCIN In of IF AGC 18 VREG 19 OSC 20 OSCBUFOUT Gnd of RFAGC, OSC, MIX Vcc of RFAGC, OSC, MIX In of IF amp Out of detector Vcc of IF ,DET ,SM Regulator voltage Osc Out of osc buffer FUNCTION DESCRIPTION 1. Double –balanced differential MIX can prevent spurious interference and IF interference. 2. Oscillation with ALC output is stabilized at a low level (380mVrms) for varactor diode. 3. IF amplifier and IF AGC HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.02.01 Page 3 of 7 SA1135 4. RF wide –band AGC 5. SM output is able to be used as auto search stop signal 6. Local OSC buffer output facilitates designing of electronic tuner system TEST CIRCUIT 1 (VCC=8v, fr=1MHz, fm=400Hz Unit (resistance:Ω, capacitance: F)) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.02.01 Page 4 of 7 SA1135 TEST CIRCUIT 2 (VCC=8V, fr=1MHz, fm=400Hz) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.02.01 Page 5 of 7 SA1135 TYPICAL APPLICATION CIRCUIT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.02.01 Page 6 of 7 SA1135 PACKAGE OUTLINE DIP-20-300-2.54 UNIT: mm 2.54 1.27 15 degree 26.4±0.3 0.51MIN 0.51 SOP-20-300-1.27 UNIT: mm 0.15±0.05 1.27 0.45 2.25MAX 12.70±0.25 11.43 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: www.silan.com.cn REV:1.0 2005.02.01 Page 7 of 7