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INTEGRATED CIRCUITS
DATA SHEET
TDA1596T
IF amplifier/demodulator for FM
radio receivers
April 1991
Product specification
File under Integrated Circuits, IC01
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers GENERAL DESCRIPTION The TDA1596T provides IF amplification, symmetrical quadrature demodulation and level detection for quality home and car FM radio receivers and is suitable for both mono and stereo reception. It may also be applied to common front-ends, stereo decoders and AM receiver circuits. Features • Simulates behaviour of a ratio detector (internal field strength and detuning-dependent vo
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers April 1991 3 (1) Connecting pin 13 to ground is only allowed for measuring the current at pin 16. It is not for use in application. (2) In the FM, mute-on condition the unweighted level detector output is available from pin 3. In the FM, mute-off condition the variable resistor at pin 3 can be adjusted for minimum 2nd harmonic distortion at pin 4. Fig.1 Block diagram and application circuit.
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers PINNING 1V supply voltage P 2 LVA level voltage adjustment 3 ULV unweighted level output/K2 adjustment 4 AF0 AF output 5V reference voltage output ref 6 WLV weighted level voltage output 7 MSW mode switch 8 DDV detune detector voltage 9 n.c. not connected 10 DMI1 demodulator input 1 11 DMI2 demodulator input 2 12 n.c. not connected 13 TSW tau switch 14 ST1 stop pulse output 1 15 ST0 stop pulse out
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers FUNCTIONAL DESCRIPTION Limiter-amplifier This has five stages of IF amplification using balanced differential limiter-amplifiers with emitter--follower coupling. Decoupling of the stages from the voltage supply lines and an internal high-ohmic DC feed-back loop give a very stable IF performance. The amplifier gain is virtually independent from temperature changes. FM demodulator The demodulator is
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) SYMBOL PARAMETER MIN. MAX. UNIT V = V Supply voltage (pin 1) - 0.3 +16 V P 1-17 V Reference voltage range (pin 5) - 0.3 + 10 V 5-17 V Level adjustment range (pin 2) - 0.3 + 10 V 2-17 V Mode switch voltage range (pin 7) - 0.3 V V 7-17 P V Control input voltage range (pin 13) -+6V 13-17 THD compensation/unweighted field
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers CHARACTERISTICS f = 10.7 MHz; V = V = 8.5 V; V = V = 1 mV; T = 25 °C; measured in the circuit of Fig.3; tuned circuit at pins P 1-17 I 20 (rms) amb 10, 11 aligned for symmetrical stop pulses; all voltages are referred to ground (pin 17), unless otherwise specified SYMBOL PARAMETER MIN. TYP. MAX. UNIT Supplies V = V Supply voltage 7.5 8.5 12.0 V P 1 I Supply current at I = I = 0 mA - 20 26 mA 1 2 7
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers SYMBOL PARAMETER MIN. TYP. MAX. UNIT Attack and decay (pin 16) Pin 13 connected to ground * +I charge current - 8 -μA 16 -I discharge current - 120 -μA 16 Pin 13 connected to V ref +I charge current - 100 -μA 16 -I discharge current - 120 -μA 16 Level detector Dependence of output voltage on temperature - 3.3 - mV/VK ΔV 6 ------------- - V ΔT 6 R Output impedance -- 500 Ω 6 Dependence of output vo
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers SYMBOL PARAMETER MIN. TYP. MAX. UNIT Tuning-stop detector (Figs 10 and 11) Stop-0: detuning at V = 10 mV 20(rms) +Δf for V ≥ 3.5 V -- 10 kHz 15 +Δf for V ≤ 0.3 V 18 -- kHz 15 Stop-1: detuning at V = 10 mV 20(rms) -Δ f for V ≥ 3.5 V -- 10 kHz 14 -Δ f for V ≤ 0.3 V 18 -- kHz 14 Dependence of STOP-0, STOP-1 on input voltage (pin 20) input voltage (RMS value) for V V = V ≥ 3.5 V 250 --μV 20(rms) 14 15
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers OPERATING CHARACTERISTICS f = 10.7 MHz; V = V = 1 mV; deviation (Δf) = 22.5 kHz; modulation frequency (f ) = 400 Hz; de-emphasiss (pin 4) I 20(rms) m = 50 μs; test circuit as per Fig.3; tuned circuit (Q = 19) aligned for symmetrical stop pulses; T = + 25 °C; unless L amb otherwise specified SYMBOL PARAMETER MIN. TYP. MAX. UNIT V AF output voltage (RMS value) at 180 200 220 mV 4(rms) V = 10 mV 20(rm
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers April 1991 11 Fig.3 Test circuit.
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers Fig.4 Printed-circuit board component side, showing component layout. For circuit diagram see Fig.3. Fig.5 Printed-circuit board showing track side. April 1991 12
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers Fig.6 Typical curve of internal attenuation showing the relationship between the mute attenuator control voltage (pin 16) and mute attenuation; I = I = 0 mA 2 7 Fig.7 Weighted field strength output voltage (pin 6) as a function of input voltage (pin 20); R ≥ 10 kΩ; 6-17 I =I = 0 mA. 2 7 April 1991 13
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers Fig.8 Weighted field strength output voltage (pin 6) as a function of detuning; R ≥ 10 kΩ; I = I = 0 mA; 6-17 2 7 V = 10 mV. 20 Fig.9 Adjustment range of weighted field strength output voltage (pin 6) with level shift control (pin 2); R ≥ 10 kΩ; I = 0 mA. 6-17 7 April 1991 14
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers (a) STOP-0. (b) STOP-1. Fig.10 STOP-0 and STOP-1 output voltages as a function of detuning, measured at V = 10 mV. 20 April 1991 15
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers Fig.11 STOP-0 or STOP-1 output voltages as a function of input voltage at pin 20. Fig.12 Switch levels at pin 7. April 1991 16
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers (a) mode switch at FM, mute-on (b) mode switch at FM, mute-off Fig.13 Audio signal (Δf = 22.5 kHz; f = 1 kHz) and noise as functions of input voltage at pin 20; measured with m 50 μs de-emphasis. April 1991 17
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers Fig.14 Dynamic mute attenuation as a function of frequency deviation for modulation frequencies of 40, 60, 80 and 100 kHz. Fig.15 THD as a function of detuning, mode switch at FM, mute-on position; Δf = 75 kHz; f = 1 kHz; m V = 10 mV. 20(rms) April 1991 18
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers (a) mode switch at FM, mute-on (b) mode switch at FM, mute-off Fig.16 Typical curves showing AM suppression for an input signal having frequency modulation at Δf = 22.5 kHz and f = 1 kHz, and amplitude modulation of 30% at a frequency of 400 Hz; de-emphasis time = 50 μs and m bandwidth = 250 Hz to 15 kHz. April 1991 19
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Philips Semiconductors Product specification IF amplifier/demodulator for FM radio TDA1596T receivers 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
