T4258 AM/FM Receiver IC Description The T4258 is an integrated AM/FM frontend circuit in BICMOS technology. It contains a double conversion system for FM and an up-/down conversion circuit for AM (IF1 = 10.7 MHz, IF2 = 450 kHz). A complete automatically aligned high performance AM/FM tuner can be built together with the PLL U4256BM. This ICs are designed for high performance car radio applications. Electrostatic sensitive device. Observe precautions for handling. Features Receiving condition analyzer Integrated band filter for 2nd IF; with software controlled bandwidth Pin compatible with U4255BM FM-double conversion system World tuner, US Weatherband, J-band Completely integrated FM demodulator Soft mute and multipath noise cancellation AM up-/down conversion system AM stereo capability Stop signal generation for AM and FM Automatic alignment possible 3-wire bus controlled Block Diagram IF1FMI MX1OA MX1OB 44 43 V3 IF1AMI MX2OB IF1REF IF1OUT MX2IN MX2OA 38 39 33 30 29 26 24 23 IF2IN V3P 28 27 AM AM Dem. 32 OPLPF FM 41 MX1AMA MX1AMB AGC AM 3 V3 7 AMAGC AGC AMVREG 6 AMPLPF 8 35 Noise– blanker 20 MX1FMB GNDMX 1 4 Divider 2...10 Offset Adj. Chan. Divider OSCB 15 14 IF2OUT Multi– path 40 MULTIP 16 OSCE IFAGCH ÏÏ ÏÏ FM 2 OSCOUT GNDOSC IFAGCL Automatic FILADJ Adjustment 37 AGC MX1FMA 36 ÏÏ V3 OSC 13 Bandgap 12 25 42 Bus 5 17 18 FM Dem. Stop Soft Mute 11 INT 19 9 V57 VS EN DATA METER GND FMAGC CLK 22 10 MX2LO ADJAC 21 INT 34 SMUTE MPX Dev. Ana. 31 DEV Figure 1. Block diagram Ordering Information Extended Type Number T4258-ILQ T4258-ILS Rev. A1, 10-Jan-01 Package SSO44 SSO44 Remarks Taped and reeled Tube 1 (17) T4258 Pin Description Pin Symbol Function 1 MX1FMA 1st mixer FM input A 2 MX1FMB 1st mixer FM input B 3 MX1AMB 1st mixer AM input B 4 GNDMX Ground 1st mixer 5 FMAGC FM preamplifier AGC 6 AMVREG AM control voltage 7 AMAGC AM preamplifier AGC 8 AMPLPF AM AGC LP filter 9 METER Fieldstrength output 10 ADJAC Adjacent channel detection output 11 MPX Multiplex signal 12 V57 5.7 V reference voltage 13 OSCB Oscillator basis 14 OSCE Oscillator emitter 15 GNDOSC Oscillator ground 16 OSCOUT Oscillator output 17 EN 3-wire bus enable 18 CLK 3-wire bus clock 19 DATA 3-wire bus data 20 IF2OUT 21 INT 2nd IF amplifier output 1 44 MX1OB MX1FMB 2 43 MX1OA MX1AMB 3 42 VS GNDMX 4 41 MX1AMA FMAGC 5 40 MULTIP AMVREG 6 39 IF1REF AMAGC 7 38 IF1FMI AMPLPF 8 37 FILADJ METER 9 36 IFAGCL ADJAC 10 35 IFAGCH MPX 11 34 SMUTE V57 12 33 IF1AMI OSCB 13 32 OPLPF OSCE 14 31 DEV GNDOSC 15 30 IF1OUT OSCOUT 16 29 V3 EN 17 28 IF2IN CLK 18 27 V3P DATA 19 26 MX2IN IF2OUT 20 25 GND INT 21 24 MX2OA MX2LO 22 23 MX2OB Interrupt, stop signal, test out 22 MX2LO 10.25 MHz input for 2nd mixer 23 MX2OB 2nd mixer output B 24 MX2OA 2nd mixer output A 25 GND 26 MX2IN 27 V3P 28 IF2IN 29 V3 30 IF1OUT 1st IF amplifier output 31 DEV Deviation detect output 32 OPLPF Operating point LPF 33 IF1AMI 1st IF AM amplifier input 34 SMUTE Soft MUTE control input 35 IFAGCH IF AGC LP filter high time constant constant 36 IFAGCL IF AGC LP filter low time constant 37 FILADJ Filter adjust 38 IF1FMI 1st IF FM amplifier input 39 IF1REF 1st IF & MX1OUT ref., MX1AMA, MX1AMB 40 MULTIP Multipath detection output 41 MX1AMA 42 VS 43 MX1OA 1st mixer output A 44 MX1OB 1st mixer output B 2 (17) MX1FMA Ground 2nd mixer input 3 V ref. for AMPIN, AMIFAGC, Control, IF2IN 2nd IF amplifier input 3 V reference for IF1OUT, MX2IN 1st mixer AM input A Supply voltage Figure 2. Pinning SSO44 Rev. A1, 10-Jan-01 T4258 Absolute Maximum Ratings All voltages are referred to GND (Pin 25) Parameter Symbol Value Unit VS 10 V Power dissipation Ptot 1,0 W Junction temperature Tj 150 °C Ambient temperature range Tamb –40 to +85 °C Storage temperature range Tstg –50 to +150 °C Supply voltage Pin 42 Operating Range All voltages are referred to GND (Pin 25) Parameter Supply voltage range Pin 42 Ambient temperature Symbol Min. Typ. Max. Unit VS 8 8.5 10 V Tamb –40 85 °C Thermal Resistance Junction ambient Parameter Symbol Value Unit soldered to PCB RthJA t.b.d. K/W Electrical Characteristics Test conditions (unless otherwise specified): VS = +8.5 V, Tamb = +25°C for AC parameters: fiRF = 1 MHz, Rg = 50 , fMOD = 0.4 kHz, m = 0.3, fIF = 450 kHz, reference point Pin 4 Parameter Test Conditions / Pins Symbol Supply voltage Pin 42 VS Supply current Pin 42 IS Min. Typ. Max. Unit 8.5 10 V 100 mA AM RF AGC AGC threshold Mixer Input (2 bit) 91 94 97 100 dbµV dbµV dbµV dbµV AM LO divider Programmable divider (3 bit) N 2 10 AM Mixer (10.7 MHz) DC supply current Pin 43 + 44 Conversion conductance ioif/virf Maximum IF output Pins 43, 44 Input intercept point 3rd order Input resistance Rev. A1, 10-Jan-01 10 MHz Pin 41 17 mA Sm1 4.1 mA/V VoIF 8 Vpp IP3 133 dBµV 13 k 3 (17) T4258 Electrical Characteristics (continued) Test conditions (unless otherwise specified): VS = +8.5 V, Tamb = +25°C for AC parameters: fiRF = 1 MHz, Rg = 50 , fMOD = 0.4 kHz, m = 0.3, fIF = 450 kHz, reference point Pin 4 Parameter Test Conditions / Pins Symbol Min. Typ. Max. Unit AM-1st IF Amplifier (10.7 MHz) Input resistance Ri 100 k G 15 dB 26 dB IP3 137 dBµV F 10 dB 10 mA Sm2 2 mA/V VoIF 8 Vpp Ro Co 1 3 M pF Input intercept point 3rd order IP3 133 dBµV Input resistance Ri 330 Pin 28 Ri 3 k Pin 28 to 20 G 53 dB 47 dB 200 mV 160 100 90 220 260 mV mV mV MHz –15 dBc IF preamplifier gain Pin 33 RL = 330 Pins 33 to 30 Preamplifier control range Output intercept point 3rd order Noise figure Mixer 2 (450 kHz) DC supply current Pin 23 + 24 Conversion conductance ioif2/viif1 Maximum IF output Pins 23, 24 Output impedance Pin 23 – GND Pin 24 – GND 2nd IF Amplifier (450 kHz) Input resistance IF preamplifier gain Preamplifier control range IF2 Output (Pin 20) Output level Oscillator Oscillator amplitude Rg (Pin 13) = 220 , Q of Losc = 70 VLOB VLOE VLObuf fOSC Frequency range Harmonics Pin 16 Output resistance Pin 16 Programmable oscillator divider 4 (17) Range FM Europe FM Japan AM WB 70 70 RLObuf Nosc 70 1 3 2 3 2 1.5 Rev. A1, 10-Jan-01 T4258 Electrical Characteristics Test conditions (unless otherwise specified): VS = +8.5 V, Tamb = +25°C, for AC parameters: fiRF = 100 MHz, Rg = 50 , fMOD = 0.4 kHz, f = ±75 kHz, fIF = 450 kHz, reference point Pin 4 Parameter Test Conditions / Pins Symbol Min. Typ. Max. Unit FM AGC AGC threshold mixer input (2 bit) Vmixin 85 90 95 103 t.b.d. dBµV dBµV dBµV dBµV dBµV AGC threshold mixer output Vmixout AGC threshold IF amp. out Vif1out t.b.d. dBµV gc 7 mA/V IP3 125 dBµV NFdsb 10 dB FM Mixer Conversion transconductance 3rd order intercept point Load impedance: RL43, 44 = 200 Ω Noise figure Input resistance Pin 1 to 2 Ri 1, 2 Input capacitance Pin 1 to 2 Ci 1, 2 kΩ 5 pF Input 1 resistance to ground f = 100 MHz Pin 1 Ri1 Input 1 capacitance to ground f = 100 MHz Pin 1 Ci1 Input 2 resistance to ground f = 100 MHz Pin 2 Ri2 Input 2 capacitance to ground f = 100 MHz Pin 2 Ci2 7 pF Pins 43, 44 Co 43, Co 44 5 pF Gmin Gmax 20 30 dB dB Output capacitance to GND kΩ 9 pF kΩ 1st IF FM Amplifier Digitally adjustable gain 3 bit, 10.7 MHz Input resistance Pin 38 Ri 38 330 Ω Output resistance Pin 30 Ro 30 330 Ω Temperature coefficient of the gain Bit 66 = 0 TK1 dB/K Temperature coefficient of the gain Bit 66 = 1 TK2 dB/K Noise figure Output intercept point 3rd order Rev. A1, 10-Jan-01 F t.b.d. dB IP3 130 dBµV 5 (17) T4258 Electrical Characteristics (continued) Test conditions (unless otherwise specified): VS = +8.5 V, Tamb = +25°C, for AC parameters: fiRF = 100 MHz, Rg = 50 , fMOD = 0.4 kHz, f = ±75 kHz, fIF = 450 kHz, reference point Pin 4 Parameter Test Conditions / Pins Symbol ViPin 23, 24 = 40 mV f = 450 kHz Deviation = ± 22.5kHz, fMOD = 1 kHz Bandwidth = 30 Hz .. 20 kHz Deemphasis 50 µs VMPX, Min. Typ. Max. Unit FM Demodulator (Pin 11) Output voltage 150 mV 60 dB 0.3 % 165 mV 3.5 % Range 85 dB Max. output voltage 5 V Steepness 50 mV/dB Signal-to-noise related to 22.5 kHz dev. Total distortion Pin 11 S/N Bandwidth 2nd IF filter = 120 kHz WB Demodulator (Pin 11) Output voltage Total distortion Fieldstrength Output (Pin 10) Bit 71 = 0, Bit 72 = 1 ViPin 23, 24 = 40 mV f = 450 kHz Deviation = ± 2.5 kHz, fMOD = 1 kHz VMPX, Pin 11 Bandwidth 2nd IF filter = 30 kHz (Bit 80 = 0) Integrated IF filter Bandwidth FM (4 bit) WB (4 bit) Centerfrequency adjust 50 20 200 100 kHz kHz –43 +43 kHz MPX Lowpass Bandwidth Bit 79 = 0 Bit 79 = 1 90 180 kHz kHz Stopsignal Generator Stop Window 6 (17) ± 0.5 ± 80 kHz Rev. A1, 10-Jan-01 T4258 Electrical Characteristics (continued) Parameter Test Conditions / Pins 3–wire bus, ENABLE, Clock, DATA Symbol Min. Typ. Max. Unit 1.0 V V 1.0 MHz Pins 17, 18, 19 Input voltage High LOW VBUS VBUS 2.0 Clock frequency Period of CLK High Low tH tL Rise time EN, DA, CLK tR 400 ns Fall time EN, DA, CLK tF 100 ns Set-up time tS 100 ns Hold time EN tHEN 250 ns Hold time DA tHDA 0 ns 250 250 ns ns Bus Timing tR tF Enable tHEN tS tF tR Data tHDA tS tR tF Clock tH tL 96 11826 Figure 3. Bus timing Rev. A1, 10-Jan-01 7 (17) T4258 Data Transfer A24_100 MSB BYTE3 ADDR. Demodulator 1 0 LSB Gain FM – IF1 0 1= AM 1= FM B93 B92 MSB BYTE2 Pin21 INT Search stop window/ Noiseblanker AM sensitivity LSB MSB BYTE1 Pin9 Meter Pin11 MPX LPF 1= nband 0= 90kHz B81 B80 B79 LSB MSB BYTE1 Local OSC AM divider/ Multipath sensitivity 1= stop B91 B90 B89 B88 B87 B86 LSB MSB BYTE 2 Soft mute depth TK FM IF1 ampl. B85 B84 B83 B82 LSB Stop signal gate time B78 B77 B76 B75 B74 B73 A24_101 MSB BYTE3 ADDR. WB demodulator gain 1 0 Soft mute threshold 1 AGC threshold AM/FM 1= 26dB B72 B71 B70 B69 B68 B67 B66 B65 LSB MSB BYTE 2 B64 1st IF ampl. AM/FM 1st Mixer +AGC AM/FM 1=AM 1=AM B63 B62 Pin23/ Pin24 MX2O bandwidth B61 LSB Int. IF2 reference shift B60 B59 B58 LSB MSB BYTE 1 B57 B56 Pin 20 IFOUT Pin28 IF2IN Demodulator control Gain local OSC 0= IF2out 0= open 0= active 0= low B55 B54 B53 B52 A24_111 MSB BYTE 3 ADDR. Local OSC AGC 1 1 Do not change 1 0 B30 Pin 9 offset 0 0 0 0 0 0 0 0 B29 B28 B27 B26 B25 B24 B23 B22 LSB Bandpath filter center frequency Pin 9 Meter Local OSC AGC prescaler (VCO(Buffer) 1= +multi B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 A8_100 MSB 1 BYTE 1 ADDR. Test– mode 0 0 LSB Pin 11 MPX OUT 1=Mute Pin 40/10 Reset 0 Multipath noise cancellation 0=on 0 Noise blanker AM 1=on B9 B8 B7 B6 B5 A8_101 MSB 1 BYTE 1 ADDR. Pin 21 INT 0 1= ON 1 B4 8 (17) LSB Bandpath filter Band width B3 B2 B1 B0 Rev. A1, 10-Jan-01 T4258 Pulse Diagram 8-bit command EN DATA LSB BYTE 1 MSB BYTE 1 MSB LSB CLK 16-bit command EN DATA LSB BYTE 2 MSB CLK 24-bit command EN DATA LSB MSB LSB BYTE 1 BYTE 2 MSB LSB BYTE 3 MSB CLK Figure 4. Pulse diagram Bus Control The operating mode is set by the bits 92 and 93 Bit 88 switches the search mode on/off AM/ FM/ Weather Channel Bit 93 Bit 92 Station search Bit 88 Standby 0 0 Receive 0 FM 0 1 Search 1 AM 1 0 Weather band 1 1 The bits 89 to 91 control the gain of the FM IF amplifier Gain FM-IF Bit 91 Bit 90 Bit 89 Bits 85 to 87 select the the search-stop deviation from the center frequency ans AM noiseblanker sensitivity AM Noiseblanker Sensitivity Low Searchstop window + 0.5 kHz Bit 87 Bit 86 Bit 85 0 0 0 19 dB 0 0 0 21 dB 0 0 1 1.1 kHz 0 0 1 23 dB 0 1 0 2.3 kHz 0 1 0 25 dB 0 1 1 4.8 kHz 0 1 1 27 dB 1 0 0 10 kHz 1 0 0 28 dB 1 0 1 20 kHz 1 0 1 29 dB 1 1 0 40 kHz 1 1 0 30 dB 1 1 1 80 kHz 1 1 1 Rev. A1, 10-Jan-01 Normal High 9 (17) T4258 In AM mode (Bits 92, 93), Bits 81 to 84 set the divide factor of the AM divider Divider AM Mixer 1 Bit 93 Bit 92 Bit 84 Bit 83 Bit 82 Bit 81 Divide by 10 1 0 1 X X X Divide by 9 1 0 0 1 1 1 Divide by 8 1 0 0 1 1 0 Divide by 7 1 0 0 1 0 Divide by 6 1 0 0 1 Divide by 5 1 0 0 Divide by 4 1 0 Divide by 3 1 Divide by 2 1 Bit 80 and Bit 13 switches between narrow band field strength information and wide band field strength information Field strength narrow band / wide band Bit 80 Bit 13 FM field strength (wide band) 0 1 Wide Band + Multipath fieldstrength 0 0 1 AM field strength from AGC (narrow band) 1 1 0 0 Narrow band + Multipath fieldstrength 1 0 0 1 1 0 0 1 0 0 0 0 0 1 0 0 0 0 0 Bit 79 controls the band width of the low pass filter of the MPX output Band Width MPX Low Pass Filter Bit 79 90 kHz 0 180 kHz 1 In FM mode and in weather band mode (Bit 92, 93), the Bits 81 to 84 set the multipath sensitivity Sensitivity Multipath Bit 93 Bit 92 Bit 84 Bit 83 Bit 82 Bit 81 Off x 1 0 0 0 0 Low x 1 0 0 0 1 x 1 0 0 1 0 x 1 0 0 1 1 x 1 0 1 0 0 x 1 0 1 0 1 x 1 0 1 1 0 x 1 0 1 1 1 x 1 1 0 0 0 x 1 1 0 0 1 x 1 1 0 1 0 Bit 71 1 1 0 1 1 Demodulator Gain in Weather Band Mode Bit 72 x x 1 1 1 0 0 5x 0 0 x 1 1 1 0 1 7.5 x 0 1 x 1 1 1 1 0 10 x 1 0 x 1 1 1 1 1 15 x 1 1 Normal High 10 (17) The stop counter calculates an average center frequency during the time which is set by the bits 73 to 78 Time Window for Stop Signal Bit 78 Bit 77 Bit 76 Bit 75 Bit 74 Bit 73 3.1969 ms 0 0 0 0 0 0 1 x 3.1969 ms 0 0 0 0 0 1 1 1 1 1 1 1 ... 63 x 3.1969 ms The demodulator gain for the weather band mode is set by the bits 71 and 72 Rev. A1, 10-Jan-01 T4258 For soft mute, the MPX signal level will be reduced depending on the input signal strength. Bits 68 to 70 set the input signal field strength, at which the MPX signal will be reduced by 3 dB (for soft mute). The setting of fieldstrength offsett (Bit 18 ... 21) has also influence of the soft start. Start Soft Mute 0 dB 1 dB 2 dB 3 dB 4 dB 5 dB 6 dB 7 dB Bit 70 0 0 0 0 1 1 1 1 Bit 69 0 0 1 1 0 0 1 1 Bit 68 0 1 0 1 0 1 0 1 Bit 67 sets the maximum reduction of the MPX signal level Bits 60 and 61 controls the band width of the 2nd-mixer output tank, in FM mode FM Band Width Mixer 2 Bit 61 Bit 60 150 kHz 0 0 200 kHz 0 1 250 kHz 1 0 450 kHz 1 1 Bit 62 select which 1st mixer and AGC stage in active Bit 62 FM mixer + FM AGC active 0 AM mixer + AM AGC active 1 Bit 63 controls which 1st IF amplifier is active Bit 63 Max. Value of Soft Mute 30 dB 26 dB Bit 67 0 1 Temperature coefficient setting of FM IF–amplifier Temperature Coefficient (TC) of the IF Amplifier TK 1 TK 2 Bit 66 0 1 Level control of the FM / WB – AGC threshold FM AGC Threshold 103 dBµV 97 dBµV 92 dBµV 85 dBµV Bit 65 0 0 1 1 Bit 64 0 1 0 1 Bit 62 0 0 0 0 Level control of AM-AGC threshold AM Control Start 91dBµV 94 dBµV 97 dBµV 100 dBµV Rev. A1, 10-Jan-01 Bit 65 0 0 1 1 Bit 64 0 1 0 1 Bit 62 1 1 1 1 1st FM – IF amplifier active 0 1st AM – IF amplifier active 1 Setting of the internal second IF reference shift IF Offset Bit 59 Bit 58 Bit 57 Bit 56 + 0.00 kHz 0 0 0 0 + 6.25 kHz 0 0 0 1 + 12.50 kHz 0 0 1 0 + 18.75 kHz 0 0 1 1 + 25.00 kHz 0 1 0 0 + 31.25 kHz 0 1 0 1 + 37.50 kHz 0 1 1 0 + 43.75 kHz 0 1 1 1 – 0.00 kHz 1 0 0 0 – 6.25 kHz 1 0 0 1 – 12.50 kHz 1 0 1 0 – 18.75 kHz 1 0 1 1 – 25.00 kHz 1 1 0 0 – 31.25 kHz 1 1 0 1 – 37.50 kHz 1 1 1 0 – 43.75 kHz 1 1 1 1 11 (17) T4258 Function of Pin 20 setting is done by Bit 55 Setting of the fieldstrenght offset (Output Pin 9) Pin 20: IF out / Field Strength for Multipath Bit 55 Offset Fieldstrenght Bit 21 Bit 20 Bit 19 Bit 18 2nd IF output 0 0.0 dB 0 0 0 0 Multipath field strength 1 0.5 dB 0 0 0 1 1.0 dB 0 0 1 0 1.5 dB 0 0 1 1 2.0 dB 0 1 0 0 2.5 dB 0 1 0 1 3.0 dB 0 1 1 0 3.5 dB 0 1 1 1 4.0 dB 1 0 0 0 4.5 dB 1 0 0 1 1 0 1 0 Band filter, in FM mode 2nd IF Filter Bit 54 Internal filter 0 External + internal filter 1 Setting Bit 53 controls the demodulator in FM/ WB mode. Demodulator Control Bit 53 5.0 dB FM fine tuning OFF (default) 1 5.5 dB 1 0 1 1 WB fine tuning 0 6.0 dB 1 1 0 0 6.5 dB 1 1 0 1 7.0 dB 1 1 1 0 7.5 dB 1 1 1 1 Setting Bit 52 controls the gain of the local oscillator. Local Oscillator Bit 52 Low gain 0 High gain 1 Setting Bit 17 controls the center frequency OFFSET of the integrated bandpath filter’s center frequency. Offset Center Frequency Bit 17 Offset + 0 Offset – 1 Bit 30 controls the oscillator AGC Oscillator AGC Bit 30 AGC of (default) 0 AGC on 1 Setting the OFFSET of the integrated bandpath filter center frequency. Offset Center Frequency 12 (17) Bit 17 Bit 16 Bit 15 Bit 14 0.00 kHz 0 0 0 6.25 kHz 0 0 1 12.50 kHz 0 1 0 18.75 kHz 0 1 1 25.00 kHz 1 0 0 31.25 kHz 1 0 1 37.50 kHz 1 1 0 43.75 kHz 1 1 1 Rev. A1, 10-Jan-01 T4258 Setting the local oscillator prescaler (VCO/ Buffer) Prescaler Prescaler VCO Buffer Bit 12 Bit 11 Bit 10 1 1 X 0 0 1.5 3 0 0 1 1.5 1.5 1 0 1 2 2 X 1 0 3 3 X 1 1 Setting Bit 9 (expert mode) activates test mode (B18 – B23 active) Bit 6 = 1 resets the Multipath sensor and the adjacent channel sensor Sensor out (Pin 10, 40) Bit 6 Normal 0 To ground 1 Bit 5 switches the AM noiseblanker ON/OFF AM Noiseblanker Bit 5 OFF 0 ON 1 Bits 0 to 3 set the band width of the integrated 2nd IF band filter Mode Bit 9 Normal mode 0 IF Bandwidth Bit 3 Bit 2 Bit 1 Bit 0 Test mode 1 200 kHz 0 0 0 0 190 kHz 0 0 0 1 180 kHz 0 0 1 0 170 kHz 0 0 1 1 160 kHz 0 1 0 0 150 kHz 0 1 0 1 140 kHz 0 1 1 0 130 kHz 0 1 1 1 120 kHz 1 0 0 0 110 kHz 1 0 0 1 100 kHz 1 0 1 0 Bit 8 = 0 activates the multipath noise canceller Multipath Noise Canceller Bit 8 Active 0 Not active 1 Bit 7 = 1 mutes the MPX output 90 kHz 1 0 1 1 Mute of MPX Output Bit 7 80 kHz 1 1 0 0 MPX out, Pin 11 0 70 kHz 1 1 0 1 Mute MPX 1 60 kHz 1 1 1 0 50 kHz 1 1 1 1 Rev. A1, 10-Jan-01 13 (17) 14 (17) 470 Pin 29 50 50 V V VS 13 14 15 16 4 2 1 FM OSC Divider 12 VS 25 42 Bandgap V3 Divider 2...10 AM 44 5 AGC 38 39 50 AM Bus 17 18 19 Bus FM 33 30 V3 50 29 26 23 VS V Noise– blanker 24 Stop 28 27 9 Offset 22 10 Adj. Chan. FM Dem. Soft Mute 21 INT Pin 29 V3 34 20 35 36 32 31 Dev. Ana. 11 Multi– path 40 Automatic Adjustment 37 AGC AM Dem. Ï ÏÏ Ï Ï Ï ÏÏÏ Ï Ï ÏÏ ÏÏ Ï ÏÏ Ï ÏÏ Ï ÏÏ ÏÏ Ï ÏÏ Ï ÏÏ Ï ÏÏ ÏÏ Ï ÏÏ Ï ÏÏ Ï ÏÏ Ï ÏÏ Ï ÏÏ ÏÏ ÏÏÏÏÏÏ Ï ÏÏÏÏÏÏÏ Ï ÏÏ Ï ÏÏ Ï ÏÏ Ï Ï Ï ÏÏ Ï ÏÏÏ Ï ÏÏ Ï ÏÏ Ï 7 AGC 6 8 3 41 43 VS 50 50 V testpoint T4258 Test Circuit Figure 5. Test circuit Rev. A1, 10-Jan-01 Rev. A1, 10-Jan-01 M 75 Ohm Ant R307 47 T301 J109 T302 BC848 R105 100 2k2 BC 858C S391D C311 D302 S391D 100n 4u7 L301 D301 220n 10n C315 C302 R306 470k 220n R115 1k R103 1k 2u2 C106 L102 10p 3p9 C102 F201 2 43 S391D 10n 3 42 68k R122 68k R121 C11 10n 4 5 40 C308 100n 41 10n C302 C201 100n C110 4n7 F101 D101 D103 C103 BB804 C56 27p C104 10n 18p C107 1n 6p8 C108 C109 1 44 100p C in F201 BB804 D102 R41 1k2 C113 100n 10n C209 T101 BFR93A R112 47k R104 470 68k F102 R102 390 R313 470n C111 C306 12p C112 10u C117 10n T102 BC858 100uH C316 R308 T301 L303 2m2 2k2 C319 6p8 R311 L302 R29 10 6 39 R34 27 7 38 9 C115 100n 22u C203 8 C204 470n 37 36 1u 12 C208 220n R151 8k2 14 15 30 C152 330p 1n C134 R131 5k6 BB804 F131 1 20 47p 22p C131C132 13 D131 470p C77 C133 6p8 C114 220n 11 C116 100n 10 T4258 33 10n C207 220n 32 31 X301 C206 1k5 R305 R33 2k C205 10u 35 34 R111 200k C202 KR201 R304 5k6 3 18 17 28 C158 10n 10n C151 2 19 16 29 KR202 4 20 25 16 C159 10n DAC3 5 21 24 1n 10n C312 8 9 10 C153 C154 12p 12p 10,25MHz Q151 13 12 11 22 23 F302 R32 1k R106 10 SWO1 SWO3 SWO2 SWO4 7 C157 10n 6 14 C155 100n 15 10n C156 19 26 R303 1k C310 C309 220n U4256BM 17 18 27 KF302 R152 10 10 R407 MPX ADJAC METER GND EN CLK DATA IF2OUT INT DEV MULTIP VS (+8,5V...10,5V T4258 Application Board Schematic Figure 6. Application board schematic 15 (17) T4258 Package Dimensions Package SSO44 Dimensions in mm 9.15 8.65 18.05 17.80 7.50 7.30 2.35 0.3 0.25 0.10 0.8 0.25 10.50 10.20 16.8 44 23 technical drawings according to DIN specifications 1 16 (17) 22 Rev. A1, 10-Jan-01 T4258 Ozone Depleting Substances Policy Statement It is the policy of Atmel Germany GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. Atmel Germany GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. Atmel Germany GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use Atmel Wireless & Microcontrollers products for any unintended or unauthorized application, the buyer shall indemnify Atmel Wireless & Microcontrollers against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. Data sheets can also be retrieved from the Internet: http://www.atmel–wm.com Atmel Germany GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423 Rev. A1, 10-Jan-01 17 (17)