INTEGRATED CIRCUITS DATA SHEET TDA8012AM Low power PLL FM demodulator for satellite TV receivers Product specification File under Integrated Circuits, IC02 1997 May 26 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM FEATURES GENERAL DESCRIPTION • High input sensitivity The TDA8012AM is a sensitive Phase Locked Loop (PLL) Frequency Modulation (FM) demodulator for the second Intermediate Frequency (IF) in satellite receivers. It provides Automatic Gain Control (AGC) and Automatic Frequency Control (AFC) outputs that can be used to optimize the level and the frequency of the signal applied at the input. During the search procedure, the AFC output provides a signal used for carrier detection. • Fully balanced two-pin Voltage Controlled Oscillator (VCO) • Low input impedance (50 Ω) • Low impedance video baseband output • Internal voltage stabilizer • Keyed Automatic Frequency Control (AFC) or peak AFC • Carrier detector • Automatic Gain Control (AGC) output. APPLICATIONS • Digital Broadcast System (DBS) satellite receivers. QUICK REFERENCE DATA SYMBOL PARAMETER VCC supply voltage ICC supply current Vi input level fc operating carrier frequency Vo(p-p) video output signal amplitude (peak-to-peak value) CONDITIONS VCC = 5 V; Tamb = 25 °C frequency deviation = 25 MHz MIN. TYP. MAX. UNIT 4.75 5.0 5.25 V 40 50 60 mA 53 57 61 dBµV − 480 − MHz − 1 − V ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TDA8012AM SSOP20 1997 May 26 DESCRIPTION plastic shrink small outline package; 20 leads; body width 4.4 mm 2 VERSION SOT266-1 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM BLOCK DIAGRAM handbook, full pagewidth CDF1 CDF2 CARRIER DETECTOR 1 2 20 AFC 19 18 AFCOS AFC/CDO KEY PD+ PD− IFI1 IFI2 17 3 4 5 16 VCO 6 15 14 GND V CC Vth(AGC) 8 VCO1 OSCGND STABILIZER 13 12 9 10 LF2 LF1 VIDEO TDA8012AM 11 VIDEO BUFFER Fig.1 Block diagram. 1997 May 26 VCO2 7 AGC AGCO AFCF 3 MBH934 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM PINNING SYMBOL PIN DESCRIPTION CDF1 1 carrier detector filter 1 input CDF2 2 carrier detector filter 2 input PD+ 3 positive peak detector output PD− 4 negative peak detector output IFI1 5 intermediate frequency input 1 IFI2 6 intermediate frequency input 2 GND 7 general ground VCC 8 supply voltage AGCO 9 automatic gain control output Vth(AGC) 10 automatic gain control threshold voltage input VIDEO 11 baseband signal output LF1 12 loop filter 1 input LF2 13 loop filter 2 input OSCGND 14 oscillator ground VCO1 15 oscillator tank circuit 1 input VCO2 16 oscillator tank circuit 2 input AFCF 17 automatic frequency control filter input KEY 18 key pulse input AFC/CDO 19 automatic frequency control /carrier detector output AFCOS 20 automatic frequency control offset input handbook, halfpage 1 20 AFCOS CDF2 2 19 AFC/CDO PD+ 3 18 KEY PD− 4 17 AFCF IFI1 5 16 VCO2 TDA8012AM IFI2 6 15 VCO1 GND 7 14 OSCGND VCC 8 13 LF2 AGCO 9 12 LF1 Vth(AGC) 10 11 VIDEO MBH931 Fig.2 Pin configuration. The circuit provides an AGC signal which is used to drive a gain-controlled IF amplifier (TDA8011T or TDA8010AM) for a stable PLL demodulation characteristic. FUNCTIONAL DESCRIPTION The TDA8012AM is a low power PLL FM demodulator designed for use in satellite TV reception systems. An analog AFC voltage is available. This signal fits in with the input of the A/D converter port of the PLL frequency synthesizer (TSA5055). The AFC function may be keyed to address D2MAC systems. The demodulator is based on a PLL structure including a fully balanced two-pin VCO. A high gain IF amplifier ensures a high input sensitivity. The video output voltage is supplied through a highly-linear video buffer with a low output impedance. The centre frequency of the VCO and the loop characteristics can be set by external components (see Fig.4). 1997 May 26 CDF1 The TDA8012AM includes a Carrier Detector (CD) used for channel detection during search procedures. 4 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. MAX. UNIT VCC supply voltage −0.3 +6.0 V VI(max) voltage on all pins −0.3 VCC V IO(max) output source current − 10 mA tsc(max) maximum short-circuit time on outputs − 10 s ZL AC load impedance at video output 600 − Ω Tstg IC storage temperature −55 +150 °C Tj junction temperature − 150 °C Tamb operating ambient temperature −10 +80 °C HANDLING Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe it is desirable to take normal precautions appropriate to handling MOS devices. THERMAL CHARACTERISTICS SYMBOL Rth j-a 1997 May 26 PARAMETER CONDITIONS thermal resistance from junction to ambient in free air 5 VALUE UNIT 120 K/W Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM CHARACTERISTICS Measured in the application circuit (see Fig.4) with the following conditions: VCC = 5 V, Tamb = 25 °C, fc = 480 MHz, input level: 57 dBµV; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VCC supply voltage ICC supply current 4.75 5.0 5.25 V note 1 40 50 60 mA 4.75 < VCC < 5.25 V; −10 < Tamb < 80 °C 20 25 30 MHz/V Voltage controlled oscillator KVCO VCO constant ∆fVCO(drift) VCO frequency temperature dependence note 2 − 1 2.5 MHz ∆fVCO(shift) VCO frequency voltage dependence 4.75 < VCC < 5.25 V − ±300 ±750 kHz note 3 53 57 61 dBµV − 480 − MHz resistive part − 50 − Ω inductive part − 100 − nH − 0.42 − V/rad drift − 2 − dB shift − 2 − dB 1.8 2.3 2.8 kΩ Frequency demodulator Vi operating input level fc optimal operating carrier frequency Zi input impedance note 4 KD phase detector constant Vi = 57 dBµV LG PLL loop gain note 5 Zo differential output impedance of the phase detector fcr(PLL) PLL capture range note 6 ±20 ±26 − MHz DG differential gain note 7 − ±2 − % DP differential phase note 7 − ±2 − deg IM3 third-order intermodulation distortion note 8 47 − − dB IM2 second-order intermodulation distortion note 9 45 − − dB frequency deviation = 25 MHz 0.8 1.0 1.2 V Video output Vo(p-p) baseband signal amplitude (peak-to-peak value) VO DC voltage level of video output 2.1 2.35 2.6 V Zo output impedance − 75 − Ω S/N weighted baseband signal-to-noise ratio note 10 58 61 − dB SAM Amplitude Modulation (AM) sensitivity note 11 − 30 − dB 1997 May 26 6 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers SYMBOL TDA8012AM PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Automatic gain control (note 12) THAGC IAGCO = 0.5 mA; V10 = 0.1VCC − − 53 dBµV IAGCO = 0.5 mA; V10 = 0.9VCC 61 − − dBµV Vth(AGC) (pin 10) not connected − 57 − dBµV shift VCC = 4.75 to 5.25 V − 1 − dB drift Tamb = −10 to +80 °C − 1 − dB automatic gain control threshold as a function of the voltage applied to pin 10 note 13 LD level detector SAGC automatic gain control steepness IAGCO = 0.5 mA; note 14 − 8 − mA/dB Vsat(AGC) low level automatic gain control output saturation voltage IAGCO = 1 mA − 200 500 mV Keying pulse tkey input keyed pulse time period − 64 − µs tW(key) keyed pulse width 8 − − µs VIL LOW level input keyed pulse voltage key on − − 0.8 V VIH HIGH level input keyed pulse voltage key off 3.0 − − V Zi input impedance 1 10 − kΩ AFC and carrier detector output (note 15) IL(pd) peak detector leakage current ∆V AFC ----------------∆f automatic frequency control steepness with unmodulated input signal ∆fAFC(shift) shift of automatic frequency control voltage with respect to fVCO with unmodulated 480 MHz input signal ∆fAFC(drift) drift of automatic frequency control voltage with respect to fVCO note 16 50 150 250 nA 4.5 5.5 6.5 V/MHz ∆VCC = ±5% − ±180 ±500 kHz Tamb = 80 °C; note 17 − −1.1 − MHz Notes 1. The DC supply current is measured with VCC = 5 V. 2. The VCO frequency drift is defined as the change in oscillator frequency for a variation of ambient temperature, on the one hand from Tamb = 25 °C to Tamb = 0 °C and on the other hand from Tamb = 25 °C to Tamb = 50 °C. It is measured in the application of Fig.4 with the following component values for the tank circuit: Coil: 2.5 turns; diameter 2 mm; adjustable. Capacitor: miniature ceramic plate capacitor NP0, 3.3 pF. 3. The circuit is designed for an input level of 57 dBµV. The maximum allowable input level for the PLL design is 61 dBµV. However, for levels different from 57 dBµV, the optimum loop filter values will be different from those given for the 57 dBµV input level in the reference measuring set-up. 4. The input impedance is reduced to a resistor with a parallel reactance. The values are given at 480 MHz. In order to reduce the radiation from the oscillator to the RF input, it is recommended to use a symmetrical drive. 5. The PLL loop gain shift and drift are given without loop filter shift and drift (non-temperature compensated external components). 1997 May 26 7 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM 6. The capture range or lock-in range is defined as the range where the PLL gets in lock. This value depends strongly on the loop filter characteristics. 7. Measurements with test signals in accordance with CCIR recommendation 473-3; FM modulated signal with DBS parameters: a) 625 lines PAL TV system b) 16 MHz/V modulator sensitivity c) 1 V (p-p) video signal d) No SAW filter is used. 8. No SAW filter is used at the input: a) 16 MHz/V modulator sensitivity b) 4.43 MHz sine wave colour signal (660 mV (p-p)) c) 3.25 MHz sine wave luminance signal (700 mV (p-p)) d) CCIR pre-emphasis e) Intermodulation distance is defined as the distance between the luminance signal and the intermodulation products.The video output spectrum is measured on pin 11 (point A of Fig.4) with a high resistance probe. The de-emphasis figure is obtained from the measured data by calculation. 9. No SAW filter is used at the input: a) 16 MHz/V modulator sensitivity b) Two sound carriers at 7.02 MHz and 7.20 MHz; 4 MHz deviation c) Intermodulation measurement without pre-emphasis d) Intermodulation distance is defined as the distance between one of the sound carriers and the intermodulation products e) The video output spectrum is measured on pin 11 (point A of Fig.4) with a high resistance probe and a spectrum analyser. 10. Measurements are made under the following conditions a) FM modulator video signal b) Amplitude level: 57 dBµV c) Frequency: 479.5 MHz d) Frequency deviation: 16 MHz e) CCIR pre-emphasis + unified weighting filter f) C/N > 50 dB S/N is measured after de-emphasis with a baseband spectrum from 200 kHz to 5 MHz. 11. The AM sensitivity is defined as the ratio of the baseband output signals obtained from either an AM or FM modulated RF input signal. V o(FM) S AM = 20 log ---------------V o(AM) FM modulated signal: fc = 480 MHz, frequency deviation = 25 kHz, modulation frequency = 20 kHz, input level = 57 dBµV AM modulated signal: fc = 480 MHz, modulation depth = 50%, modulation frequency = 20 kHz, input level = 57 dBµV. 12. The characteristics of the AGC function are measured in the application circuit of Fig.4. The circuit illustrated in Fig.4 has been designed to set the maximum AGC current to 1 mA. The output of the AGC function is capable of handling up to 5 mA. The maximum AGC current can be increased to 5 mA by decreasing the value of the resistor connected between pins 8 and 9. 1997 May 26 8 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM 13. For applications in which a fixed AGC threshold is used, it is recommended to use the internal resistor voltage divider for lower AGC threshold spread. In this case, the threshold is set to 57 dBµV. 14. In the application circuit (see Fig.4) the voltage at the AGC output decreases when the IF input level increases above the adjusted AGC threshold. 15. The outputs from the AFC and carrier detector are combined at pin 19 (see Fig.3). During search tuning, when the input frequency is outside the capture range, the combined output (carrier detector function) is at a LOW level (any voltage below 0.6VCC). When the PLL becomes locked, the voltage at pin 19 rises to a HIGH level (V19 = 0.8VCC to VCC). When the input channel is close to the centre frequency, V19 falls to the LOW level. As shown in Fig.3, the voltage at pin 19 is now a function of the centre frequency (AFC function). This information may be read by a microcontroller via the ADC of the satellite frequency synthesizer (TSA5055) and the I2C-bus. 16. This current discharges the external capacitors between two energy dispersal peak values and avoid the use of external resistors in parallel with capacitors. 17. The drift of the automatic frequency control voltage is measured in accordance with the following method: a) At room temperature (Tamb = 25 °C) the TDA8012AM is driven by a 480 MHz unmodulated signal. The voltage at pin 20 must be adjusted to obtain a 1.5 V output at the AFC output (pin 19). b) At Tamb = 80 °C, due to its temperature drift, the AFC output voltage differs from 1.5 V. The input frequency must be adjusted to obtain 1.5 V at the AFC output. Then the VCO frequency fVCO is measured in free running mode (without input signal). The drift of the automatic frequency control voltage will then be equal to the difference between the input frequency and fVCO. handbook, full pagewidth V19 VCC MBH932 1 carrier detect on 0.8 0.6 0.45 0.3 AFC DATA 0.15 0 fo frequency 500 kHz Fig.3 AFC and carrier detector output. 1997 May 26 9 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM APPLICATION INFORMATION handbook, full pagewidth 1 µF CARRIER DETECTOR 1 82 kΩ 2.7 MΩ VCC 2 20 4.7 kΩ AFC 19 22 µF AFC/CDO 18 330 nF 3 330 nF 4 10 kΩ 17 KEY 220 pF 10 nF intermediate frequency input 5 16 VCO 6 (1) 15 3.3 pF 10 nF 14 7 8 V CC 1 nF 47 µF 8.2 pF STABILIZER 2.7 kΩ 13 4.7 kΩ 12 AGC +15 V 9 AGCO 330 Ω 10 Vth(AGC) 1.5 kΩ T1(2) 11 TDA8012AM VIDEO BUFFER 1 nF T2(2) 330 nF 75 Ω video A MBH933 15 kΩ (1) 2.5 turns; diameter 2.0 mm. (2) T1, T2 = BC547B. Fig.4 Application circuit. 1997 May 26 10 680 Ω 470 µF −15 V Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM PACKAGE OUTLINE SSOP20: plastic shrink small outline package; 20 leads; body width 4.4 mm D SOT266-1 E A X c y HE v M A Z 11 20 Q A2 A (A 3) A1 pin 1 index θ Lp L 1 10 detail X w M bp e 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) θ mm 1.5 0.15 0 1.4 1.2 0.25 0.32 0.20 0.20 0.13 6.6 6.4 4.5 4.3 0.65 6.6 6.2 1.0 0.75 0.45 0.65 0.45 0.2 0.13 0.1 0.48 0.18 10 0o Note 1. Plastic or metal protrusions of 0.20 mm maximum per side are not included. OUTLINE VERSION REFERENCES IEC JEDEC EIAJ ISSUE DATE 90-04-05 95-02-25 SOT266-1 1997 May 26 EUROPEAN PROJECTION 11 o Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM If wave soldering cannot be avoided, the following conditions must be observed: SOLDERING Introduction • A double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. • The longitudinal axis of the package footprint must be parallel to the solder flow and must incorporate solder thieves at the downstream end. Even with these conditions, only consider wave soldering SSOP packages that have a body width of 4.4 mm, that is SSOP16 (SOT369-1) or SSOP20 (SOT266-1). This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our “IC Package Databook” (order code 9398 652 90011). During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Reflow soldering Reflow soldering techniques are suitable for all SSOP packages. Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. Maximum permissible solder temperature is 260 °C, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 °C within 6 seconds. Typical dwell time is 4 seconds at 250 °C. Several techniques exist for reflowing; for example, thermal conduction by heated belt. Dwell times vary between 50 and 300 seconds depending on heating method. Typical reflow temperatures range from 215 to 250 °C. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. Repairing soldered joints Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 °C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 °C. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 °C. Wave soldering Wave soldering is not recommended for SSOP packages. This is because of the likelihood of solder bridging due to closely-spaced leads and the possibility of incomplete solder penetration in multi-lead devices. 1997 May 26 12 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 1997 May 26 13 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM NOTES 1997 May 26 14 Philips Semiconductors Product specification Low power PLL FM demodulator for satellite TV receivers TDA8012AM NOTES 1997 May 26 15 Philips Semiconductors – a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. 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The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Printed in The Netherlands 547047/1200/01/pp16 Date of release: 1997 May 26 Document order number: 9397 750 01589