INTEGRATED CIRCUITS DATA SHEET TDA1599 IF amplifier/demodulator for FM radio receivers Product specification File under Integrated Circuits, IC01 May 1994 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 FEATURES GENERAL DESCRIPTION • Balanced limiting amplifier The TDA1599 provides IF amplification, symmetrical quadrature demodulation and level detection for quality home and car FM radio receivers and is suitable for mono and stereo reception. It may also be applied to common front ends, stereo decoders and AM receiver circuits. • Balanced coincidence demodulator • Two open-collector stop pulse outputs for microcomputer tuning control • Simulated behaviour of a ratio detector (internal field strength and detuning dependent voltage for dynamic AF signal muting) • Mono/stereo blend field strength indication control voltage • AFC output • 3-state mode switch for FM-MUTE-ON, FM-MUTE-OFF and FM-OFF • Internal compensation of AF signal total harmonic distortion (THD) • Built-in hum and ripple rejection circuits. QUICK REFERENCE DATA SYMBOL PARAMETER MIN. TYP. MAX. UNIT VP positive supply voltage (pin 1) 7.5 8.5 12 V IP supply current (I2 = I7 = 0) − 20 26 mA Vi IF input sensitivity for limiting on pin 20 (RMS value) 14 22 35 µV Vo AF output signal on pin 4 (RMS value) 180 200 220 mV S/N signal-to-noise ratio (fm = 400 Hz; ∆f = ±75 kHz) − 82 − dB THD Tamb total harmonic distortion (fm = 1 kHz; ∆f = ±75 kHz) − 0.1 0.3 % with K2 adjustment and FM-MUTE-OFF − 0.07 0.25 % operating ambient temperature −40 − +85 °C All pin numbers mentioned in this data sheet refer to the SO-version (TDA1599T) unless otherwise specified. ORDERING INFORMATION EXTENDED TYPE NUMBER PACKAGE PINS PIN POSITION MATERIAL CODE TDA1599 18 DIL plastic SOT102(1) TDA1599T 20 mini-pack plastic SOT163A(2) Notes 1. SOT102-1; 1996 August 29. 2. SOT163-1; 1996 August 29. May 1994 2 (1) (2) (3) (4) IF amplifier/demodulator for FM radio receivers May 1994 3 Fig.1 Block diagram and application circuit (TDA1599 pinning in parenthesis). to connect pin 13 (11) to ground is only allowed to measure the current on pin 16 (14) FM-MUTE-OFF FM-OFF FM-MUTE-ON Philips Semiconductors Product specification TDA1599 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 PINNING; note 1 SYMBOL PIN DESCRIPTION VP 1 (1) supply voltage (+8.5 V) LVA 2 (2) level adjustment for stop condition ULV 3 (3) unweighted level output / K2 adjustment VoAF 4 (4) audio frequency output (MPX signal) VREF 5 (5) reference voltage output WLV 6 (6) weighted level output MODE 7 (7) mode switch input DDV 8 (8) detune detector voltage n.c. 9 (−) not connected DEMI1 10 (9) demodulator input 1 DEMI2 11 (10) demodulator input 2 n.c. 12 (−) not connected TSW 13 (11) tau switch input ST1 14 (12) STOP-1, stop pulse output 1 ST0 15 (13) STOP-0, stop pulse output 0 MUTE 16 (14) muting voltage GND 17 (15) ground (0 V) LFB1 18 (16) IF limiter feedback 1 LFB2 19 (17) IF limiter feedback 2 ViIF 20 (18) IF signal input Note 1. SO-version TDA1599T; pinning for DIL-version in parenthesis. Fig.2 Pin configuration for DIL-version. May 1994 Fig.3 Pin configuration for SO-version. 4 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 Consequently, there is no need for the demodulator tuned circuit to be adjusted for minimum distortion. Adjustment criterion is a symmetrical stop pulse. The control voltage for the mute attenuator (pin 16) is derived from the values of the level detector and the detuning detector output signals. The mute attenuator has a fast attack and a slow decay determined by the capacitor on pin 16. The AF signal is fed via the mute attenuator to the output (pin 4). A weighted control voltage (pin 6) is obtained from the mute attenuator control voltage via a buffer amplifier that introduces an additional voltage shift and gain. FUNCTIONAL DESCRIPTION The limiter amplifier has five stages of IF amplification using balanced differential limiter amplifiers with emitter follower coupling. Decoupling of the stages from the supply voltage line and an internal high-ohmic DC feedback loop give a very stable IF performance. The amplifier gain is virtually independent of changes in temperature. The FM demodulator is fully balanced and compromises two cross-coupled differential amplifiers. The quadrature detection of the FM signal is performed by direct feeding of one differential amplifier from the limiter amplifier output, and the other via an external 90 degrees phase shifting network. The demodulator has a good stability and a small zero-cross-over shift. The bandwidth on the demodulator output is restricted by an internal low-pass filter to approximately 1 MHz. The level detector generates a voltage output signal proportional to the amplitude of the input signal. The unweighted level detector output signal is available in FM-MUTE-ON condition (mode switch). The open-collector tuning stop output voltages STOP-0 and STOP-1 (pins 15 and 14) are derived from the detuning and the input signal level. The pins 14 and 15 may be tied together, if only one tuning-stop output is required. Non-linearities, which are introduced by demodulation, are compensated by the THD compensation circuit. For this reason, the demodulator resonance circuit (between pins 10 and 11) must have a loaded Q-factor of 19. May 1994 5 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 LIMITING VALUES (TDA1599T PINNING) In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. MAX. UNIT VP supply voltage (pin 1) −0.3 +13 V Vn1 voltage at pins 2, 4, 5, 6, 10, 11 and 16 −0.3 +10 V Vn2 voltage at pins 7, 3, 8, 14, 15, 18, 19 and 20 −0.3 VP V V13 voltage on pin 13 − 6 V I14, 15 current at pins 14 and 15 − 2 mA Ptot total power dissipation − 360 mW Tstg storage temperature −55 +150 °C Tamb operating ambient temperature −40 +85 °C VESD electrostatic handling; note 1 all pins except 5 and 7 − ±2000 V pin 5 − +800 V −2000 V +1000 V −2000 V − pin 7 Note to the limiting values 1. Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor. THERMAL RESISTANCE SYMBOL Rth j-a May 1994 PARAMETER THERMAL RESISTANCE from junction to ambient in free air SOT102 80 K/W SOT163A 90 K/W 6 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 CHARACTERISTICS (TDA1599T PINNING) VP = 8.5 V; Tamb = +25 °C; FM-MUTE-ON (I7 = 0); fIF = 10.7 MHz; deviation ±22.5 kHz with fm = 400 Hz; Vi = 10 mV RMS at pin 20; de-emphasis of 50 µs; tuned circuit at pins 10 and 11 aligned for symmetrical stop pulses; measurements taken in Fig.4 unless otherwise specified. SYMBOL PARAMETER VP positive supply voltage (pin 1) IP supply current CONDITIONS I2 = I7 = 0 MIN. TYP. MAX. UNIT 7.5 8.5 12 V − 20 26 mA Mode switch input I7 input current for FM-MUTE-ON − 0 − mA V7 input voltage for FM-MUTE-ON 2.4 2.8 3.2 V input voltage for FM-MUTE-OFF 0.9VREF − − V − − 1.4 V input voltage for FM-OFF AF attenuation > 60 dB IF amplifier and demodulator Zi demodulator input impedance between pins 10 and 11 25 40 55 kΩ Ci demodulator input capacitance between pins 10 and 11 − 6 − pF − 400 − Ω 2.75 3.1 3.45 V 33 36 − dB AF output (pin 4) Ro output resistance V4 DC output level RR1000 power supply ripple rejection on pin 4 f = 1000 Hz; Vripple = 50 mV RMS ViIF ≤ 5 µV RMS on pin 20 Tuning stop detector ∆f ∆f V20 V14, 15 detuning frequency for STOP-0 on pin 15; Fig.11 for V15 ≥ 3.5 V − − +14.0 kHz for V15 ≤ 0.3 V +22.0 − − kHz for V14 ≥ 3.5 V − − −14.0 kHz for V14 ≤ 0.3 V −22.0 − − kHz detuning frequency for STOP-1 dependence on input voltage for STOP-0 and STOP-1 (RMS value) output voltage on pin 14; Fig.10 Fig.9; V14, 15 ≥ 3.5 V 250 − − µV V14, 15 ≤ 0.3 V − − 50 µV I14, 15 = 1 mA − − 0.3 V Reference voltage source (pin 5) VREF reference output voltage I5 = −1 mA 3.3 3.7 4.1 V R5 output resistance I5 = −1 mA − 40 80 Ω TC temperature coefficient − 3.3 − mV/VK May 1994 7 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers SYMBOL PARAMETER TDA1599 CONDITIONS MIN. TYP. MAX. UNIT External muting V16 S V20 ≤ 5 µV RMS; Fig.12 1.45 1.75 2.05 V V20 = 1 mV RMS 3.0 3.45 3.9 V − 0.85 − V/dec V16 ≥ VREF − 0 − dB V16 = 0.77VREF 1.5 − 4.5 dB V16 = 0.55VREF − 20 − dB charge current V13 = 0 V − −8 − µA discharge current V13 = 0 V − +120 − µA charge current V13 = VREF − −100 − µA discharge current V13 = VREF − +120 − µA − − 500 Ω V20 ≤ 5 µV RMS; Fig.14 0.1 − 1.1 V V20 = 1 mV RMS 3.0 − 4.2 V muting voltage at I2 = 0 steepness of control voltage (slope: 100 µV ≤ V20 ≤ 100 mV) 20 ∆log V20 = 20 dB (∆V16 / ∆log V20) Internal mute α = 20 log (∆V4(FM-MUTE-OFF)/ ∆V4(FM-MUTE-ON)) α I16 mute voltage current for capacitor (pin 16) Level detector R6 output resistance V6 output voltage at I2 = 0 ±200 kHz detuning 1.2 1.5 1.8 V output voltage at V2 = V5 V20 ≤ 5 µV RMS − − 0.3 V ∆V6 output voltage at detuning ±45 kHz detuning − − 0.2 V TC temperature coefficient ∆f detuning frequency S steepness of control voltage (slope: 50 µV ≤ V20 ≤ 50 mV) 20 ∆log V20 = 20 dB (∆V6 / ∆log V20) ∆V6/∆f slope of output voltage at detuning S level shift adjustments May 1994 − 3.3 − mV/VK 90 − 160 kHz 1.4 1.7 2.0 V/dec ∆f = 125 ± 20 kHz − 35 − mV/kHz range by pin 2 ±∆V6/VREF 0.42 0.5 − V/V gain −∆V6/∆V2 − 1.7 − V/V range by pin 2 ±∆V16/VREF 0.21 0.25 − V/V gain −∆V16/∆V2 − 0.85 − V/V V6 = 1.8 V; Fig.13 8 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 OPERATING CHARACTERISTICS (TDA1599T PINNING) VP = 7.5 to 12 V; Tamb = +25 °C; FM-MUTE-ON (I7 = 0); fIF = 10.7 MHz; deviation ±22.5 kHz with fm = 400 Hz; Vi = 10 mV RMS at pin 20; de-emphasis of 50 µs; tuned circuit at pins 10 and 11 aligned for symmetrical stop pulses; measurements taken in Fig.4 unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT IF amplifier and demodulator Vi 14 22 35 µV V7 = VREF − 15 − µV V7 = VREF − 60 − µV deviation ±75 kHZ − 82 − dB 180 200 220 mV − 0.1 0.3 % − − 0.6 % − 0.07 0.25 % 10 − − mV input signal for start of limiting (−3 dB) (RMS value; pin 20) V7 = VREF; FM-MUTE-OFF input signal for signal-to-noise ratio (RMS value) f = 250 to 15000 Hz S/N = 26 dB S/N = 46 dB S/N signal-to-noise ratio Vo AF output signal (RMS value; pin 4) THD total harmonic distortion deviation ±75 kHz; without de-emphasis fm = 1 kHz; I7 = 0 without detuning ±25 kHz detuning compensated via pin 3 ∆V4 K2 adjustment (∆V4 = V4(V3 = 0) − V4(V3 = VREF)) αAM AM suppression on pin 4 V7 = VREF V7 = VREF; m = 30% Vi = 0.3 to 1000 mV RMS on pin 20 46 55 − dB Vi = 1 to 300 mV RMS on pin 20 60 65 − dB − 14 − dB − − +14.0 kHz +22.0 − − kHz − − −14.0 kHz −22.0 − − kHz 250 − − µV Dynamic mute attenuation α = 20 log (∆V4(FM-MUTE-OFF)/∆V4(FM-MUTE-ON)) α dynamic mute attenuation deviation ±75 kHz; fm = 100 kHz; V2 = 1 V Tuning stop detector ∆f detuning frequency for STOP-0 on pin 15; Fig.11 for V15 ≥ 3.5 V for V15 ≤ 0.3 V ∆f detuning frequency for STOP-1 on pin 14; Fig.10 for V14 ≥ 3.5 V for V14 ≤ 0.3 V V20 dependence on input voltage for STOP-0 and STOP-1 (RMS value) Fig.9; V14, 15 ≥ 3.5 V V14, 15 ≤ 0.3 V R8 May 1994 internal low-pass resistance of detune detector 9 − − 50 µV 12 25 50 kΩ Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers SYMBOL V8 PARAMETER voltage on capacitor TDA1599 CONDITIONS MIN. TYP. MAX. UNIT − 2.2 − V V20 ≤ 5 µV RMS 0.1 − 1.1 V V20 = 1 mV RMS 3.0 − 4.2 V I5 = −1 mA 3.3 3.7 4.1 V I7 = 0; Vi ≤ 5 µV RMS on input pin 20 Level detector (I2 = 0) V6 output voltage Reference voltage source (pin 5) VREF reference output voltage Operation with AM-IF Level and stop information (on pins 6,13, 14, 15 and 16) is provided for the modes FM-MUTE-ON and FM-MUTE-OFF. This information is also available in the FM-OFF mode when an AM-IF signal is input (for example 455 kHz). This can also provide a valid detuning information when a suitable AM-IF resonance circuit is provided for demodulator (Fig.18). Fig.4 Test circuit (TDA1599 pinning in parenthesis). May 1994 10 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 (1) audio signal (2) noise Fig.5 FM-MUTE-ON: Audio signal and noise as functions of the input signal ViIF (pin 20) with ∆f = ±22.5 kHz; fm = 1 kHz; de-emphasis 50 µs. MEH071 20 handbook, full pagewidth V4 (dB) 0 (1) −20 (2) −40 −60 −80 10−6 10−5 10−4 10−3 10−2 10−1 Vi20 (rms) (V) 1 (1) audio signal (2) noise Fig.6 May 1994 FM-MUTE-OFF: Audio signal and noise as functions of the input signal ViIF (pin 20) with ∆f = ±22.5 kHz; fm = 1 kHz; de-emphasis 50 µs. 11 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 (1) audio signal (2) spurious AM signal Fig.7 FM-MUTE-ON: Typical AM suppression as a function of the input signal ViIF (pin 20) with ∆f = ±22.5 kHz; fm = 1 kHz; AM with fm = 400 Hz; m = 0.3 and 250 to 15000 Hz bandwidth. MEH073 20 handbook, full pagewidth V4 (dB) 0 (1) −20 (2) −40 −60 −80 10−6 10−5 10−4 10−3 10−2 10−1 Vi20 (rms) (V) 1 (1) audio signal (2) spurious AM signal Fig.8 May 1994 FM-MUTE-OFF: Typical AM suppression as a function of the input signal ViIF (pin 20) with ∆f = ±22.5 kHz; fm = 1 kHz; AM with fm = 400 Hz; m = 0.3 and 250 to 15000 Hz bandwidth. 12 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 MEH074 10 handbook, full pagewidth V14, 15 (12, 13) (V) 8 6 4 2 0 10−6 10−5 10−4 10−3 10−2 10−1 Vi20 (rms (V) 1 Fig.9 STOP-0 and STOP-1 output voltage dependent on input signal ViIF (pin 20). MEH075 10 handbook, halfpage V15(13) (V) 8 6 4 2 0 −20 Fig.10 STOP-1 output voltage dependent on ViIF = 10 mV RMS (pin 20). May 1994 −10 0 10 20 30 40 detune (kHz) Fig.11 STOP-0 output voltage dependent on ViIF = 10 mV RMS (pin 20). 13 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 MEH076 10 handbook, full pagewidth V16(14) (V) 8 6 (1) (2) 4 (3) 2 0 10−6 10−5 10−4 10−3 10−2 10−1 Vi20 (rms) (V) 1 Fig.12 External mute voltage V16 dependent on input signal ViIF (pin 20); typical adjusting range. MEH079 10 handbook, full pagewidth V16(14) (V) 8 6 4 2 0 −400 −300 −200 −100 0 100 200 Fig.13 Mute voltage V16 dependent on detuning; ViIF = 10 mV RMS. May 1994 14 300 400 detune (kHz) Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 Fig.14 Control voltage V6 dependent on input signal ViIF (pin 20); typical adjusting range. MED834 10 handbook, full pagewidth V6 (V) 8 6 4 2 0 −400 −300 −200 −100 0 100 200 Fig.15 Control voltage V6 dependent on detuning; ViIF = 10 mV RMS. May 1994 15 300 400 detune (kHz) Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 Fig.16 Level output voltage V3 dependent on input signal ViIF (pin 20); typical adjusting range. Fig.17 Total harmonic distortion dependent on detuning at FM-MUTE-ON; deviation ±75 kHz; fm = 1 kHz; ViIF = 10 mV. May 1994 16 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers Fig.18 Interface for AM stop pulse application (SO-version). May 1994 17 TDA1599 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers Fig.19 Interface for AM stop pulse application (DIL-version). May 1994 18 TDA1599 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 PACKAGE OUTLINES DIP18: plastic dual in-line package; 18 leads (300 mil) SOT102-1 ME seating plane D A2 A A1 L c e Z w M b1 (e 1) b b2 MH 10 18 pin 1 index E 1 9 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 min. A2 max. b b1 b2 c D (1) E (1) e e1 L ME MH w Z (1) max. mm 4.7 0.51 3.7 1.40 1.14 0.53 0.38 1.40 1.14 0.32 0.23 21.8 21.4 6.48 6.20 2.54 7.62 3.9 3.4 8.25 7.80 9.5 8.3 0.254 0.85 inches 0.19 0.020 0.15 0.055 0.044 0.021 0.015 0.055 0.044 0.013 0.009 0.86 0.84 0.26 0.24 0.10 0.30 0.15 0.13 0.32 0.31 0.37 0.33 0.01 0.033 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION REFERENCES IEC JEDEC EIAJ ISSUE DATE 93-10-14 95-01-23 SOT102-1 May 1994 EUROPEAN PROJECTION 19 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 D E A X c HE y v M A Z 11 20 Q A2 A (A 3) A1 pin 1 index θ Lp L 1 10 e bp detail X w M 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y mm 2.65 0.30 0.10 2.45 2.25 0.25 0.49 0.36 0.32 0.23 13.0 12.6 7.6 7.4 1.27 10.65 10.00 1.4 1.1 0.4 1.1 1.0 0.25 0.25 0.1 0.10 0.012 0.096 0.004 0.089 0.01 0.019 0.013 0.014 0.009 0.51 0.49 0.30 0.29 0.050 0.42 0.39 inches 0.043 0.055 0.016 0.043 0.039 0.01 0.01 Z (1) 0.9 0.4 0.035 0.004 0.016 θ Note 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT163-1 075E04 MS-013AC May 1994 EIAJ EUROPEAN PROJECTION ISSUE DATE 92-11-17 95-01-24 20 o 8 0o Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers 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. SOLDERING Introduction 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. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 °C. WAVE SOLDERING 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). Wave soldering techniques can be used for all SO packages if the following conditions are observed: • A double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. DIP SOLDERING BY DIPPING OR BY WAVE • The longitudinal axis of the package footprint must be parallel to the solder flow. The maximum permissible temperature of the solder is 260 °C; solder at this temperature must not be in contact with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. • The package footprint must incorporate solder thieves at the downstream end. 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. The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. 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. REPAIRING SOLDERED JOINTS A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 °C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 °C, contact may be up to 5 seconds. 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. SO REFLOW SOLDERING Reflow soldering techniques are suitable for all SO 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. May 1994 TDA1599 21 Philips Semiconductors Product specification IF amplifier/demodulator for FM radio receivers TDA1599 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. May 1994 22