U4476B IF Amplifier / Converter for DVB (Cable) Description The U4476B is a bipolar circuit for the processing of DVB-Cable IF signals (Digital Video Broadcasting). The amplifier/ converter is suitable for QAM modulated IF signals (1st IF) and provides the gain controlled 2nd IF. With 5 V supply voltage the IC allows application in RF/IF front ends for DVB-Cable receivers (set top boxes). Features D Internal AGC with average detection for the QAM D Gain controlled amplifier for the 1st IF (36 MHz) modulated DVB signal, reference level is adjustable D IF converter for the 2nd IF (7 MHz); D 5 V supply voltage; low-power consumption VCO circuit is controlled by external PLL D Bandwidth of the output signal: 10 MHz (–1 dB) Package: 28-pin small outline plastic package (SO28) Block Diagram I2C 23 22 5 IF 1 20 VCO PLL 6 18 13 2nd IF 9 IF 2 10 28 Ref (DVB) AGC: QAM 7 12 Tuner Tuner AGC 11 VS 24 Control 15 Input select Band Gap 3 8 21 12703 Figure 1. Block diagram TELEFUNKEN Semiconductors Rev. A2, 15-Jan-98 1 (7) Preliminary Information U4476B Ordering Information Extended Type Number U4476B-MFLG3 Package SO28 Pin Description NC 1 28 AGCRef NC 2 27 NC CRef 3 26 NC NC 4 25 NC Vin1 5 24 VS 6 23 Vvco CAGC 7 22 Vvco GND 8 21 GND Vin2 9 20 LOout Vin2 10 19 NC Rtop 11 18 Vtun Vin1 Itun 12 17 NC Vout 13 16 NC NC 15 Vsw 14 14529 Figure 2. Pinning Absolute Maximum Ratings Remarks Taped and reeled, 2000 pcs ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ Pin 1, 2 3 Symbol NC CRef 4 5, 6 7 8 9, 10 11 12 13 14 15 16 17 18 NC Vin1 CAGC GND Vin2 Rtop Itun Vout NC Vsw NC NC Vtun 19 20 NC LOout 21 22, 23 24 25 26 27 28 GND Vvco VS NC NC NC AGCRef Function Not connected Capacitor for internal band gap reference voltage Not connected IF input 1 (symmetrical) DVB AGC (time constant) Ground IF input 2 (symmetrical) Take-over point, tuner AGC Tuner AGC output current Output signal (2nd IF) Not connected IF input selector switch Not connected Not connected Input for the external VCO tuning voltage Not connected Local oscillator output (reference signal) Ground VCO circuit (symmetrical) Supply voltage Not connected Not connected Not connected External reference voltage (comparator DVB AGC) ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ W Parameters Symbol VS IS Ptot Iout Tj Tstg VESD Supply voltage Supply current Power dissipation, VS = + 5.5 V Output currents Junction temperature Storage temperature Electrostatic handling *) *) Equivalent to discharging a 200-pF capacitor through a 0- Value 5.5 100 550 5 125 –25 to +125 tbd Unit V mA mW mA °C °C V resistor 2 (7) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Jan-98 U4476B Operating Range ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ Thermal Resistance ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁÁÁÁ ÁÁÁÁÁ Parameters Supply voltage range Ambient temperature Parameters Junction ambient when soldered to PCB Symbol Value Unit VS Tamb 4.5 to 5.5 0 to +85 V °C Symbol RthJA Value 75 Unit K/W Electrical Characteristics VS = 5 V, Tamb = 25°C ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ W ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ D ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ W ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ W ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ D ÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ m ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ Parameters Test Conditions / Pins DC supply Supply voltage Supply current IF inputs Input sensitivity, rms value Input impedance See note 1 Input capacitance See note 1 DVB AGC (QAM modulation) IF gain control range IF2 output voltage Pin 13 = 1.8 Vpp VCO Oscillator frequency Tuning range fvco = 43 MHz Cvco = 8.2 pF Local oscillator output signal fvco = 43 MHz Cvco = 8.2 pF Local oscillator control fvco = 43 MHz signal Cvco = 8.2 pF 2nd IF output Output current source Output current sink Output resistance See note 1 Output amplitude Peak-to-peak value DC output voltage Bandwidth of 2nd IF (–1 dB) RL ≥ 1 k , CL ≤ 50 pF Frequency response over AGC range IF input switch Control voltage See also note 2, Input 1 is active ‘high’ (IF1 active, Pin 5–6) Input 2 is active ‘low’ (IF2 active, Pin 9–10) Switching current (Pin 15 to ground) TELEFUNKEN Semiconductors Rev. A2, 15-Jan-98 Symbol Min. Typ. Max. Unit VS IS 4.5 5.0 80 5.5 100 V mA 80 1.2 2 120 µVrms k pF vin Rin Cin Gv 60 fvco 65 ftun ±1.5 MHz MHz LOout 100 mV vtun 43 dB 0.5 2.7 ±Iout 2 Rout vo,vid 1.6 B 10 1.8 2.2 4.5 V 5 4 100 2.0 mA 2.0 B VSW VSW ISW 60 2.5 3.5 1.5 30 V V MHz dB V V A 3 (7) Preliminary Information U4476B Electrical Characteristics Vs = 5 V, Tamb = +25°C ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ D ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ D ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ Parameters 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 (Pin 28 open) Test Conditions / Pins Symbol Min. Typ. Max. Unit Itun Vout 1 0.3 2 4 13.5 10 4 mA V dB mV Current Itun: 10% to 90% 8 GIF vin vin Tamb = 55°C IF AGC: Gv = 46 dB 40 mV 2 vin 3 dB Notes: 1. This parameter is given as an application information and not tested during production. 2. Without external control voltage (pin not connected) the input 1 is automatically selected. Basic Application Circuit DVB Ref VCO Frequency VS VCO Tuning Input Switch 22 mF 10 nF 50 kW +12 V 8.2 pF 28 27 26 25 24 23 10 nF 22 21 20 19 18 17 16 15 9 10 11 12 13 14 U4476B 2.2 mF 1 2 3 4 5 6 8 7 10 nF 50 W 1 2.2 mF 8 IF 1 2.2 mF IF 2 10 k W AGC IF 2 7 U4744B 10 nF SAW 1 Tuner AGC take over point *) 3 6 4 5 SAW 2 10 nF *) U4744B: Tuner 2 nd IF AGC current 13900 SAW driver, device phased out, not for new development Figure 3. 4 (7) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Jan-98 U4476B IM3 Measurements and Application Recommendations IM3 Measurement +5 V For correct measurement of IM3 with the 2-carrier method, it is necessary to control the internal IF amplifier via an external voltage at Pin 7. The criteria for a correct value of the external control voltage is the output amplitude of 1.8 Vpp (or lower). Please note that each change of the input level requests a correction of the external gain control voltage at Pin 7 in order to achieve the 1.8-Vpp output level again. In this case, IM3 is nearly 43 dB, independent from the input level. With an output voltage of 1.5 Vpp only, the IM3 is about –50 dB. Anyway, if the output amplitude is more than 1.8 Vpp (specified), the IM3 will decrease rapidly. In the graphic below, IM3 is shown for two different conditions: from DSP S852T * 50 48 Vout = 1.5 Vpp 46 IM3 ( dB ) 44 42 Vout = 1.8 Vpp 40 38 to Pin 7 10 kΩ 100 nF 14581 Figure 5. External LO Application If the internal VCO is not used, the LO can be fed unbalanced or balanced to the VCO Pins 22 and 23. The application shown below is generating an unbalanced LO signal by using a 36-MHz third-overtone quartz reference. The application circuit is taken from IQD Limited Crystal Product Data Book. The LO signal is fed unbalanced with 1 nF coupling capacity to Pin 22. Pin 23 has to be blocked to ground with an 1-nF capacitor. The typical LO amplitude is 100 dBµV. The variation of the LO input amplitude should not exceed ± 5 dB (better: ±3 dB). 36 +5 V 34 10 kΩ 32 100 pF 30 40 14778 50 60 70 80 90 Input voltage (each carrier) ( dBmV ) Figure 4. IM3 vs. IF input voltage and IF2out voltage Test conditions: input: f1 = 38 MHz, f2 = 39 MHz, LO = 43 MHz 490 nH 68 pF If the gain control of the IC is carried out by an external DSP, the internal charge pumps of the AGC (Pin 7) have to be overlapped by an external voltage source. The internal AGC currents are ± 20 µA. Therefore, the minimum current capacity of the external voltage source should be ± 30 µA or more. The circuitry shown in figure 5 takes some more current. 1 nF 4.7 kΩ 560 Ω Circuitry for External Gain Control TELEFUNKEN Semiconductors Rev. A2, 15-Jan-98 S852T 100 to Pin 22 47 pF 560 Ω 14582 Figure 6. Note: With external LO operation, Pin 18 (VCO tuning voltage) should be connected to the supply voltage, and Pin 20 (LO output) should not be connected to the PCB. 5 (7) Preliminary Information U4476B Package Information Package SO28 Dimensions in mm 9.15 8.65 18.05 17.80 7.5 7.3 2.35 28 0.25 0.25 0.10 0.4 1.27 10.50 10.20 16.51 15 technical drawings according to DIN specifications 13033 1 14 6 (7) Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Jan-98 U4476B 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 TELEFUNKEN Semiconductors Rev. A2, 15-Jan-98 7 (7) Preliminary Information