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INTEGRATED CIRCUITS
DATA SHEET
TDA1576T
FM/IF amplifier/demodulator circuit
1998 Nov 18
Product specification
Supersedes data of February 1991
File under Integrated Circuits, IC01
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T FEATURES GENERAL DESCRIPTION • Fully balanced 4-stage limiting IF amplifier The TDA1576T is a monolithic integrated FM/IF amplifier circuit for use in mono and stereo FM-receivers of car • Symmetrical quadrature demodulator radios or home sets. • Field strength indication output for 1 mA ammeter • Detune detector for side response and noise attenuation • Detune voltage output • Internal muting circuit • 0° an
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T BLOCK DIAGRAM - 1998 Nov 18 3 This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in _white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T PINNING SYMBOL PIN DESCRIPTION V 1 positive supply voltage P C 2 smoothing capacitor of power supply PS IF1 3 IF signal to resonant circuit handbook, halfpage RES1 4 resonant circuit input 1 V 1 20 GND P FMON 5 FM-ON, standby switch C 2 19 V PS FB1 RES2 6 resonant circuit input 2 IF1 3 18 V FB2 IF2 7 IF signal to resonant circuit RES1 V 4 17 iIF V 8 AF output voltage 1 (0° phase) oAF1 FMON 5 16 V V 9 AF outpu
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. MAX. UNIT V supply voltage (pin 1) 0 15 V P V voltage on pins 2, 5 and 16 0 V V 2, 5, 16 P P total power dissipation 0 450 mW tot T storage temperature - 55 +150 °C stg T operating ambient temperature - 30 +80 °C amb THERMAL CHARACTERISTICS SYMBOL PARAMETER VALUE UNIT R thermal resistance from junction to am
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T CHARACTERISTICS V = 8.5 V; f = 10.7 MHz; R =60 Ω; f = 400 Hz with Δf= ±22.5 kHz; 50 μs de-emphasis (C = 6.8 nF); P IF S m 8-9 T =25 °C and measurements taken in Fig.1; unless otherwise specified. The demodulator circuit is adjusted at amb minimum second harmonic distortion for V = 1 mV and a deviation Δf= ±75 kHz. iIF SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT V supply voltage (pin 1) 7.5 8.5 15 V P I sup
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Field strength output; see Fig.4 V output voltage V = 0 0 0.1 0.25 V 15 iIF V = 1 mV (RMS) 1.1 1.5 1.9 V iIF V = 250 mV (RMS) 3.2 3.6 4.1 V iIF S control steepness - 0.85 - V/dec R output resistance - 150 200 Ω 15 dependence on temperature - 0.3 - %/K ΔV ΔV 15 ------ - V = --------------------- - iIF ΔT ΔT × V 15 I standby operational cut-off current V ≥ 3 V; V
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Standby switch; see Fig.9 V input voltage for FM on 2.4 2.5 - V 5 V 3, 7 = 0.9 ; ---------------------- - input voltage for FM off - 2.9 3 V V 3, 7(max) linear range - 350 - mV V = 0.3 V 19 I input current V =0to2V --- 100 μA 5 5 V = 3.5 to 15 V -- 1 μA 5 temperature dependence FM on (3.5V ) - 7 - mV/K V BE 5 ------ - FM off (5V ) - 10 - mV/K ΔT BE Supply voltag
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T MEH166 20 handbook, full pagewidth V , V 8 9 (dB) S + N 0 - 20 - 40 - 60 N - 80 - 6 - 5 - 4 - 3 - 2 - 1 10 10 10 10 10 10 1 V (V) i 17 (rms) Fig.3 AF output voltage level on pins 8 and 9 as a function of V at V = 8.5 V; f = 1 kHz; Q = 20 with iIF P m L de-emphasis. MEH143 5 handbook, full pagewidth V 15 (V) 4 3 2 1 0 - 6 - 5 - 4 - 3 - 2 - 1 10 10 10 10 10 10 1 V (V) iIF (rms) Fig.4 Field strength output (I =
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T MEH145 MEH144 1 handbook, halfpage handbook, halfpage I 12 V /V 13 14 R i 0.5 I 12 0 - 1.2 - 0.8 - 0.4 0 0.4 0.8 1.2 V 9, 12 V (V) 9, 12 Fig.5 Detuning input impedance. Fig.6 Detuning curve. MEH146 MEH147 1 0 handbook, halfpage handbook, halfpage αV o (dB) I 13 - 20 (mA) 0.5 - 40 1.2 1 0.5 0 |V | 9, 12 - 60 0 - 80 024 6 0 0.1 0.2 0.3 V (V) 13 V /V 13 14 Fig.7 Detuning output. Fig.8 Internal audio attenuat
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T MEH148 2 handbook, halfpage V 3-7 V 3-7 (max) ΔV 5 1 0 012 3 V (V) 5 Fig.9 Standby switch. handbook, full pagewidth 33 pF 3 (1) 39 pF (1) 4 560 560 TDA1576T L1 1 kΩ L2 390 Ω pF pF 6 39 pF 7 MBK240 33 pF 98 C 8-9 V oAF Adjustment of the demodulator circuit is obtained with an IF signal which is higher than the 3 dB limiting level; L2 should be short-circuited or detuned; L1 should be adjusted to minimum d dis
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T PACKAGE OUTLINE SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 D E A X c y H v M A E Z 20 11 Q A 2 A (A ) 3 A 1 pin 1 index θ L p L 1 10 detail X e w M b p 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) A (1) (1) (1) UNIT A A A b cD E eH LL Q v w y θ 1 2 3 p E p Z max. 0.30 2.45 0.49 0.32 13.0 7.6 10.65 1.1 1.1 0.9 mm 2.65 0.25 1.27 1.4 0.2
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T SOLDERING • Use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a Introduction to soldering surface mount packages smooth laminar wave. This text gives a very brief insight to a complex technology. • For packages with leads on two sides and a pitch (e): A more in-depth account of soldering ICs can be found in – larger than or equal to 1.27 mm, the footprint our
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T Suitability of surface mount IC packages for wave and reflow soldering methods SOLDERING METHOD PACKAGE (1) WAVE REFLOW BGA, SQFP not suitable suitable (2) HLQFP, HSQFP, HSOP, SMS not suitable suitable (3) PLCC , SO, SOJ suitable suitable (3)(4) LQFP, QFP, TQFP not recommended suitable (5) SSOP, TSSOP, VSO not recommended suitable Notes 1. All surface mount (SMD) packages are moisture sensitive. Depending upon
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Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T NOTES 1998 Nov 18 15
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