TDA4470-M Multistandard Video-IF and Quasi Parallel Sound Processing Description The TDA4470 is an integrated bipolar circuit for multistandard video/sound IF (VIF/SIF) signal processing in TV/VCR and multimedia applications. The circuit processes all TV video IF signals with negative modulation (e.g., B/G standard), positive modulation (e.g., L standard) and the AM, FM/NICAM sound IF signals. Features D 5 V supply voltage; low power consumption D Active carrier generation by FPLL principle D Intercarrier output signal is gain controlled (necessary for digital sound processing) D Complete alignment-free AM demodulator with gain (frequency-phase-locked-loop) for true synchronous demodulation controlled AF output D Very linear video demodulation, good pulse response and excellent intermodulation figures D VCO circuit operates at picture carrier frequency, the VCO frequency is switchable for L’-mode D Alignment-free AFC without external reference circuit, polarity of the AFC curve is switchable D VIF-AGC for negative modulated signals (peak sync. detection) and for positive modulation (peak white/ black level detector) D Separate SIF-AGC with average detection D Two independent SIF inputs D Parallel operation of the AM demodulator and QPS mixer (for NICAM-L stereo sound) D Package and relevant pinning is compatible with the single standard version TDA4472, which simplifies the design of an universal IF module D Tuner AGC with adjustable take over point D Alignment-free quasi parallel sound (QPS) mixer for FM/NICAM sound IF signals Package: SDIP28, SO28 Ordering Information Extended Type Number TDA4470-MSD TDA4470-MFLG3 TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 Package SDIP28 SO28 Remarks Delivery in taped form 1 (16) Preliminary Information TDA4470-M Ï Ï Block Diagram L’ switch Loop filter Offset comp. (optional) Ï VCO Ï ÏÏ ÏÏ 18 26 0° 90° FPLL 21 20 VCO + phase shift Ï 14 Control AFC Ï ÏÏ Ï ÏÏ Ï ÏÏ Ï Ï ÏÏ Ï Ï ÏÏ Ï Ï 6 VIF VIF amp 7 CAGC 15 CBL Tuner Video det. 8 AGC (VIF) Standard 11 10 Take over point SIF 2 Tuner AGC Supply FM det. 27 28 Ï Ï SIF input switch SIF amp 2 5 CAGC 19 ÏÏ ÏÏ AFC switch 22 AFC 12 Video 13 23 17 ÏÏ ÏÏ ÏÏ ÏÏ Standard switch VS CRef 24 Intercarrier (FM / NICAM) 3 1 SIF 1 Ï ÏÏ Ï Ï Ï Ï Ï Ï ÏÏ Ï Ï Ï AGC (SIF) AM det. Ï Ï Ï 25 AF (AM) 4,9,16 95 10851 Figure 1. Block diagram 2 (16) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 TDA4470-M Circuit Description Vision IF Amplifier The video IF signal (VIF) is fed through a SAW filter to the differential input (Pin 6-7) of the VIF amplifier. This amplifier consists of three AC-coupled amplifier stages. Each differential amplifier is gain controlled by the automatic gain control (VIF-AGC). The output signal of the VIF amplifier is applied to the FPLL carrier generation and the video demodulator. Tuner-and VIF-AGC At Pin 8, the VIF-AGC charges/discharges the AGC capacitor to generate a control voltage for setting the gain of the VIF amplifier and tuner in order to keep the video output signal at a constant level. Therefore, in the case of all negative modulated signals (e.g., B/G standard) the sync. level of the demodulated video signal is the criterion for a fast charge/discharge of the AGC capacitor. For positive modulation (e.g., L standard) the peak white level of video signal controls the charge current. In order to reduce reaction time for positive modulation, where a large time constant is needed, an additional black level detector controls the discharge current in the event of decreasing VIF input signal. The control voltage (AGC voltage at Pin 8) is transferred to an internal control signal, and is fed to the tuner AGC to generate the tuner AGC current at Pin 11 (open collector output). The take over point of the tuner AGC can be adjusted at Pin 10 by a potentiometer or an external dc voltage (from interface circuit or microprocessor). FPLL, VCO and AFC The FPLL circuit (frequency phase locked loop) consists of a frequency and phase detector to generate the control voltage for the VCO tuning. In the locked mode, the VCO is controlled by the phase detector and in unlocked mode, the frequency detector is superimposed. The VCO operates with an external resonance circuit (L and C parallel) and is controlled by internal varicaps. The VCO control voltage is also converted to a current and represents the AFC output signal at Pin 22. At the AFC switch (Pin 19) three operating conditions of the AFC are possible: AFC curve “rising” or “falling” and AFC “off”. A practicable VCO alignment of the external coil is the adjustment to zero AFC output current at Pin 22. At center frequency the AFC output current is equal to zero. Furthermore, at Pin 14, the VCO center frequency can be switched for setting to the required L’ value (L’ standard). The optional potentiometer at Pin 26 allows an offset compensation of the VCO phase for improved sound quality (fine adjustment). Without a potentiometer (open circuit at Pin 26), this offset compensation is not active. TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 The oscillator signal passes a phase shifter and supplies the in-phase signal (0°) and the quadrature signal (90°)of the generated picture carrier. Video Demodulation and Amplifier The video IF signal, which is applied from the gain controlled IF amplifier, is multiplied with the inphase component of the VCO signal. The video demodulator is designed for low distortion and large bandwidth. The demodulator output signal passes an integrated low pass filter for attenuation of the residual vision carrier and is fed to the video amplifier. The video amplifier is realized by an operational amplifier with internal feedback and 8 MHz bandwidth (–3 dB). A standard dependent dc level shift in this stage delivers the same sync. level for positive and negative modulation. An additional noise clipping is provided. The video signal is fed to VIF-AGC and to the video output buffer. This amplifier with a 6 dB gain offers easy adaption of the sound trap. For nominal video IF modulation the video output signal at Pin 12 is 2 Vpp. Sound IF Amplifier and SIF-AGC The SIF amplifier is nearly identical with the 3-stage VIF amplifier. Only the first amplifier stage exists twice and is switchable by a control voltage at Pin 3. Therefore with a minimal external expense it is possible to switch between two different SAW filters. Both SIF inputs features excellent cross-talk attenuation and an input impedance which is independent from the switching condition. The SIF-AGC is related to the average level of AM- or FM-carrier and controls the SIF amplifier to provide a constant SIF signal to the AM demodulator and QPS mixer. AM Demodulator The alignment-free AM demodulator is realized by a synchronous detector. The modulated SIF signal from the SIF amplifier output is multiplied in phase with the limited SIF signal (AM is removed). The AF signal of the demodulator output is fed to the output amplifier and to the SIF-AGC. For all TV standards with negative video modulation (e.g., B/G standard), the AF output signal (Pin 25) is switched off by the standard switch. Quasi-Parallel-Sound (QPS) Mixer The QPS mixer is realized by a multiplier. The SIF signal (FM or NICAM carrier) is converted to the intercarrier frequency by the regenerated picture carrier (quadrature signal) which is provided from the VCO. The intercarrier signal is fed via an output amplifier to Pin 24. 3 (16) Preliminary Information TDA4470-M Standard Switch AFC Switch To have equal polarity of the video output signal the polarity can be switched in the demodulation stage in accordance with the TV standard. Additional a standard dependent dc level shift in the video amplifier delivers the same sync. level. In parallel to this, the correct VIF-AGC is selected for positive or negative modulated VIF signals. In the case of negative modulation (e.g., B/G standard) the AM output signal is switched off. For positive modulation (L standard) the AM demodulator and QPS mixer is active. This condition allows a parallel operation of the AM sound signal and the NICAM-L stereo sound. The AFC output signal at Pin 22 can be controlled by a switching voltage at Pin 19. It is possible to select an AFC output signal with a rising- or falling AFC curve and to switch off the AFC. L’ Switch VCR Mode For the VCR mode in a TV set (external video source selected), it is recommendable to switch off the IF circuit. With an external switching voltage at Pin 6 or 7, the IF amplifiers are switched off and all signal output levels at Pins 12, 24, and 25 are according to the internal dc voltage. Internal Voltage Stabilizer With a control voltage at Pin 14 the VCO frequency can be switched for setting to the required L’ value (L’ standard). Also a fine adjustment of the L’-VCO center frequency is possible via a potentiometer. The L’ switch is only active for positive modulated video IF-signals (standard switch in L mode). The internal bandgap reference ensures constant performance independent of supply voltage and temperature. 4 (16) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 TDA4470-M Pin Description Vi,SIF1 1 28 Vi,SIF2 Vi,SIF1 2 27 Vi,SIF2 Vsw 3 26 Rcomp GND 4 25 Vo,AM CAGC 5 24 Vo,FM Vi,VIF 6 23 VS Vi,VIF 7 22 VAFC CAGC 8 21 VVCO GND 9 20 VVCO Rtop 10 19 Vsw Itun 11 18 LF Vo,vid 12 17 CRef Vsw 13 16 GND 15 CBL Vsw 14 Pin 1, 2 3 4, 9, 16 5 6, 7 8 10 11 12 13 14 15 17 18 19 20, 21 22 23 24 25 26 27, 28 Symbol Vi, SIF1 Vsw GND CAGC Vi, VIF CAGC Rtop Itun Vo,vid VSW VSW Cbl Cref LF Vsw VVCO VAFC VS VO, FM VO, AM Rcomp Vi, SIF2 Function SIF1 input (symmetrical) Input selector switch Ground SIF-AGC (time constant) VIF input (symmetrical) VIF-AGC (time constant) Take over point, tuner AGC Tuner AGC output current Video output Standard switch L’ switch Black level capacitor Internal reference voltage Loop filter AFC switch VCO circuit AFC output Supply voltage Intercarrier output AF output – AM sound Offset compensation SIF 2 input (symmetrical) 94 8680 Figure 2. Pinning TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 5 (16) Preliminary Information TDA4470-M Absolute Maximum Ratings Reference point Pin 4 (9, 16), unless otherwise specified Parameters Supply voltage Pin 23 SDIP28 package SO28 package Supply current Pin 23 Power dissipation SDIP28 package SO28 package Output currents Pins 12, 24 and 25 External voltages Pins 1, 2, 5 to 8, 10, 12, 14, 17, 18 and 24 to 28 Pins 15, 20 and 21 Pin 11 Pins 3, 13, 19 and 22 Junction temperature Storage temperature Electrostatic handling *) all pins *) Symbol Value Unit VS VS Is P P Iout 9.0 6.0 93 840 560 5 V V mA mW mW mA +4.5 +3.5 +13.5 VS +125 –25 to +125 V V V V °C °C V Symbol Value Unit VS VS Tamb 4.5 to 9.0 4.5 to 6.0 –10 to +85 V V °C Symbol Maximum Unit RthJA RthJA 55 75 K/W K/W Vext Tj Tstg VESD "300 Equivalent to discharging a 200 pF capacitor trough a 0 W resistor. Operating Range Parameters Supply voltage range Pin 23 SDIP28 package SO28 package Ambient temperature Thermal Resistance Parameters Junction ambient, when soldered to PCB SDIP28 package SO28 package 6 (16) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 TDA4470-M Electrical Characteristics VS = +5 V, Tamb = +25°C; reference point Pin 4 (9, 16), unless otherwise specified Parameters DC-supply Supply voltage – SDIP28 – SO28 Supply current VIF-input Input sensitivity, (RMS value) Input impedance Input capacitance VIF-AGC IF gain control range AGC capacitor Black level capacitor Switching voltage: VCR mode Switching current: VCR mode Tuner-AGC Available tuner-AGC current Allowable output voltage IF slip – tuner AGC IF input signal for minimum take over point IF input signal for maximum take over point Variation of the take over point by temperature FPLL and VCO Max. oscillator frequency Vision carrier capture range Oscillator drift (free running) as function of temperature Video output Output current – source – sink Output resistance Video output signal Difference of the video signals Sync. level Zero carrier level for neg. modulation, ultra white level Zero carrier level for pos. modulation, ultra black level Supply voltage influence on the ultra white and ultra black level Video bandwidth (–3 dB) TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 Test Conditions / Pins Pin 23 Symbol Min. Typ. Max. Unit VS VS IS 4.5 4.5 5.0 5.0 85 9.0 5.5 93 V V mA vin Rin Cin Pins 8 and 15 Gv 60 Pin 8 CAGC Pin 15 CBL See note 2 Vsw See note 2 Isw Pins 10 and 11 see note 3 Itun 1 V11 0.3 Current Itun: 10 to 90% ∆GIF Rtop = 10 kW (Vtop = 4.5 V) vin 80 1.2 2 120 mVRMS kW Pin 6-7 For FPLL locked See note 1 See note 1 Rtop = 0, (Vtop = 0.8 V) vin 65 2.2 100 4.0 50 2 8 B dB mF nF V mA 4 13.5 10 4 40 6 mA V dB mV mV ∆Tamb = 55°C ∆vin 2 VIF-AGC: Gv = 46 dB Pins 18, 20, 21 and 26 see note 4 For carrier generation fvco 70 fvco = 38.9 MHz, ∆fcap ±1.5 ±2 Cvco = 8.2 pF See note 5, ∆f/∆T ∆Τamb = 55°C, Cvco = 8.2 pF, fvco = 38.9 MHz Pin 12 ±I12 2 See note 1 Rout Peak-to-peak value vo,vid 1.8 2.0 Between B/G and L ∆vo,vid Vsync 1.2 V13 = VS VDC 3.4 V8 = 3 V V13 = 0 VDC 1.15 V8 = 3 V ∆V/V 1 RL ≥ 1 kW, CL ≤ 50 pF pF 8 3 dB MHz MHz –0.3 % 5 3 100 2.2 10 mA mA W Vpp % V V V %/V MHz 7 (16) Preliminary Information TDA4470-M Parameters Video frequency response over the AGC range Differential gain error Differential phase error Intermodulation 1.07 MHz Video signal to noise ratio Residual vision carrier fundamental wave 38.9 MHz and second harmonic 77.8 MHz Lower limiting level Upper limiting level Ripple rejection Standard switch Control voltage for mode 1: neg. modulated video-IF signals and AM/NICAM sound Control voltage for mode 2: pos. modulated video-IF signals and AM/L-NICAM sound Switching current AFC output Control slope Frequency drift by temperature Output voltage upper limit lower limit Output current AFC switch Control voltage: AFC “off” AFC curve rising AFC curve falling Switching current L’ switch Control voltage: L’ frequency + L’-VCO alignment L standard Switching current SIF inputs Input sensitivity (RMS value) Input impedance Input capacitance SIF-AGC IF gain control range AGC capacitor Intercarrier output-FM DC output voltage Test Conditions / Pins Symbol ∆Β Min. Typ. Max. 2.0 Unit dB 5 5 52 2 2 60 % deg dB DG DP aIM See note 6 Weighted, CCIR-567 Below sync level Above ultra white level See note 1, Pin 23/Pin 12 Pin 13 See note 7 S/N vres1 56 60 2 10 dB mV ∆Vlim1 ∆Vlim2 RR 35 VSW 2.0 VS V VSW 0 0.8 V 400 600 ISW ±100 ∆I/∆f 0.7 0.25 mV mV dB mA Pin 22 Related to the picture carrier frequency VAFC mA/kHz 0.6 % 0.4 V V mA VS–0.4 ±0.2 IAFC Pin 19 VSW See note 8 0 1.5 3.5 0.8 2.5 VS V V V mA 0 3.0 V 3.4 VS V mA ±100 ISW Pin 14 VSW See note 9 VSW = 0 Output signal at Pin 24/25: –3 dB See note 1 See note 1 ISW Pin 1-2, 27-28 vin 700 Rin Cin 1.2 2 kW pF 65 10 dB mF 2 V 80 120 mVRMS Pin 5 Pin 24 Gv 60 CAGC see note 10 VDC 8 (16) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 TDA4470-M Parameters Output resistance Sound IF output voltage (5.5 MHz output voltage) Weighted signal to noise ratio: (CCIR 468) Ripple rejection AF output-AM DC output voltage Output resistance AF output voltage Total harmonic distortion Signal to noise ratio Ripple rejection SIF input selector switch Control voltage: input 1 active input 2 active Switching current Test Conditions / Pins See note 1 vin = 10 mV Ref. signal: vin = 10 mV; FM dev. = ±27 kHz fmod = 1 kHz; tested with the double FM demod. U2860B; B/G modulated VIF signal Black screen: Channel 1/2 Grid pattern: Channel 1/2 Grey screen 50%: Channel 1/2 See note 1, Pin 23/Pin 24 Pin 25 See note 1 m = 54% fmod = 1 kHz and 12.5 kHz Reference: m = 54 %, fmod = 1 kHz, 22 kHz low pass filter See note 1, Pin 23/Pin 25 Pin 3 See note 12 Symbol Rout vout Min. 180 S/N S/N S/N RR Typ. 150 250 Max. Unit 350 mVRMS 60/58 54/52 60/57 dB dB dB 35 see note 11 VDC Rout voAF THD 400 S/N dB 2.2 150 500 1 V W 630 2 65 RR 28 VSW 2.0 0 mVRMS % dB dB VS 0.8 ±100 ISW W V V A Notes 1.) 2.) 3.) 4.) 5.) 6.) 7.) 8.) 9.) 10.) 11.) 12.) This parameter is given as an application information and not tested during production. In VCR mode the VIF- and SIF path is switched off. Adjustment of turn over point (delayed tuner AGC) with external resistor Rtop or external voltage Vtop possible. Resonance circuit of VCO (fo = 38.9 MHz): CVCO = 8.2 – 10 pF, Coil LVCO with unloaded Q-factor Qo 60 for an oscillator voltage 100 mVRMS at Pin 20 – 21 (e.g. TOKO coil 7 KM, 292 XNS - 4051Z) The oscillator drift is related to the picture carrier frequency, at external temperature-compensated LC circuit. 1.07) = 20 log (4.43 MHz component/1.07 MHz component); (1.07) value related to black-white signal input signal conditions: picture carrier = 0 dB, colour carrier = –6 dB, sound carrier = –24 dB Without external control at Pin 13 the IC automatically operates in mode 1: ⇒ negative modulated video-IF signals and FM/NICAM sound signals. Without control voltage at Pin 19 falling AFC curve is automatically selected. With open circuit at Pin 14 the L’ switch is not active. Picture carrier PC = 38.9 MHz; sound carrier SC1 = 33.4 MHz, SC2 = 33.16 MHz; PC/SC1 =13 dB; PC/SC2 = 20 dB; PC unmodulated (equivalent to sync. peak level). Sound carrier SC = 32.4 MHz, modulated with fmod = 1 kHz, m = 54%; vin =10 mV Without control voltage at Pin 3 the SIF input 1 is automatically selected. TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 w w 9 (16) Preliminary Information TDA4470-M Intercarrier AF (AM) (FM/NICAM) SIF 2 AFC AFC switch +VS Loop comp. Black level 22 mF *) LVCO 150 W 8.2 pF 10 kW Loop filter CRef CVCO 27 26 25 24 23 22 21 20 1 2 3 4 5 6 7 8 9 10 470 nF 17 16 15 12 13 14 94 9291 28 470 nF 18 19 10 mF 22 K 2.2 mF SIF 1 *) SIF Input switch 11 10 kW AGC (VIF) AGC (SIF) VIF external L/C circuit (VCO 38.9 MHz) with TOKO coil 7KM, 292 XNS – 4051Z Tuner delay Tuner Video AGC Video neg/pos L’ Figure 3. Test circuit 10 (16) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 *) TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 External L/C circuit (VCO: 38.9 MHz) with TOKO coil 7KM, 292 XNS – 4051Z IFin 50 W 10 nF 10 nF 4 3 2 1 SAW driver U4744B 5 6 7 8 10 nF +12 V Preliminary Information SAW: VIF BP: 33.4 MHz SAW: FM 1 28 BP: 32.4 MHz SAW: AM SIF 1 SIF 2 2 27 Input switch S3 3 26 10 kW Offset comp. 4 VIF 7 22 22 m F 10 nF 23 6 AFC 9 S2 10 19 12 17 CBL 14 S4 L’adjust 13 15 100 nF 16 S1 CRef 2.2 m F 94 8497 Tuner Video Standard L/L’ switch switch 10 kW 11 18 470 nF Tuner AGC CVCO Loop filter 150W AFC switch 2V *) LVCO 20 2.2m F 8.2 pF AGC (VIF) 8 21 10 nF 51 k W 51 kW +5 V 10m F AGC (SIF) 5 24 2.2 k W 25 3.3 nF Intercarrier AF(AM) (FM/NICAM) TDA4470-M Figure 4. Basic application circuit 11 (16) TDA4470-M Internal Pin Configuration 1, 27 2, 28 2kW 2k W 20 k 2 kW 2 kW W 3V 2.3 V 4.2 V 94 8521 94 8524 Figure 5. Sound IF inputs (Pin 1-2, 27-28) Figure 8. Video IF input (Pin 6-7) 3.5 V 94 8525 3 10 kW 60 kW 8 94 8522 Figure 6. Input selector switch (Pin 3) Figure 9. VIF-AGC time constant (Pin 8) 3.5 V 5 6 kW 94 8523 Figure 7. SIF-AGC time constant (Pin 5) 6.5 kW 94 8526 Figure 10. Tuner AGC – take over point (Pin 10) 12 (16) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 TDA4470-M 94 8527 2.7 V 5 kW 15 Figure 11. Tuner AGC – output (Pin 11) 94 8530 Figure 14. Black level capacitor (Pin 15) 2.6 mA 3.5 V 94 8528 Figure 12. Video output (Pin 12) 94 8531 Figure 15. Internal reference voltage (Pin 17) 3.5 V 15.5 kW 17 kW 13 23 kW 2.75 V 94 8529 94 8532 Figure 13. Standard switch (Pin 13) TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 Figure 16. Loop filter (Pin 18) 13 (16) Preliminary Information TDA4470-M 3.5 V 30 k W 100 19 10.5 k W W 24 1 mA 94 8533 94 8536 Figure 17. AFC switch (Pin 19) Figure 20. Intercarrier output (Pin 24) 7 kW 7 kW 25 100 W 94 8534 1.4 mA Figure 18. VCO (Pin 20-21) 94 8537 Figure 21. AF output AM sound (Pin 25) 3.5 V 94 8538 10 kW 10 kW 94 8535 Figure 19. AFC output (Pin 22) Figure 22. VCO offset compensation (Pin 26) 14 (16) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 TDA4470-M Dimensions in mm Package: SDIP28 95 10610 Package: SO28 95 10610 95 9932 TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 15 (16) Preliminary Information TDA4470-M Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic 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. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division 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. TEMIC 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 TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC 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. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423 16 (16) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96