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INTEGRATED CIRCUITS
DATA SHEET
TDA1596T IF amplifier/demodulator for FM radio receivers
Product specification File under Integrated Circuits, IC01 April 1991
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
GENERAL DESCRIPTION
TDA1596T
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 voltage for dynamic AF signal muting) * Mono/stereo blend and field strength indication control voltage * Three-state mode switch for FM, mute-on / FM, mute-off / FM-off * Internal compensation of AF signal total harmonic distortion (THD) * Two open collector stop pulse outputs for microcomputer tuning control (can be one stop pulse output by wired-ANDing) * Internal reference voltage source * Built-in hum and ripple rejection circuits. QUICK REFERENCE DATA SYMBOL VP IP V4(rms) S/N THD PARAMETER Supply voltage (pin 1) Supply current (pin 1) AF output voltage (RMS value) Signal-to-noise ratio Total harmonic distortion VP = 8.5 V; I2 = I7 = 0 mA V20(rms) = 10 mV V20(rms) = 10 mV; fm = 400 Hz; f = 75 kHz CONDITIONS MIN. 7.5 - 180 - TYP. 8.5 20 200 82 0.1 MAX. 12.0 26 220 - 0.3 UNIT V mA mV dB %
- V20(rms) = 10 mV; fm = 1 kHz; I7 = 0 mA; f = 75 kHz; FM mute on; without de-emphasis; without detuning -40
Tamb
Operating ambient temperature range
-
+ 85
C
SEE ALSO DATA SHEET FOR TDA1596 PACKAGE OUTLINE 20-lead mini-pack; plastic (SO20; SOT163A); SOT163-1; 1996 August 12.
April 1991
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April 1991
Philips Semiconductors
IF amplifier/demodulator for FM radio receivers
3 Product specification
(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.
TDA1596T
Fig.1 Block diagram and application circuit.
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
PINNING 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 VP LVA ULV AF0 Vref WLV MSW DDV n.c. DMI1 DMI2 n.c. TSW ST1 ST0 MTV GND LFD1 LFD2 IFI supply voltage level voltage adjustment unweighted level output/K2 adjustment AF output reference voltage output weighted level voltage output mode switch detune detector voltage not connected demodulator input 1 demodulator input 2 not connected tau switch stop pulse output 1 stop pulse output 0 mute voltage ground IF limiter feedback 1 IF limiter feedback 2 IF input
TDA1596T
Fig.2 Pinning diagram.
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
FUNCTIONAL DESCRIPTION Limiter-amplifier
TDA1596T
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 fully balanced and comprises two cross-coupled differential amplifiers. Quadrature detection of the FM signal is performed by feeding one differential amplifier directly from the limiter--amplifier output, and the other via an external 90 phase-shifting network. The demodulator has good stability and its zero cross-over shift is small. The bandwidth of the demodulator output is restricted to approximately 1 MHz by an internal low-pass filter. THD compensation This circuit compensates non-linearities introduced by demodulation. For this to operate correctly the demodulator circuit between pins 10 and 11 must have a loaded Q-factor of 19. Consequently there is no need for the demodulator tuned circuit to be adjusted for minimum THD, instead the adjustment criterium is for a symmetrical stop pulse. Mute attenuator and AF output The control voltage for the mute attenuator at pin 16 is generated from the values of the level detector and the detuning detector outputs. The mute attenuator has a fast attack and a slow decay which is determined by the capacitor at pin 16. The AF signal is passed via the mute attenuator to the output at pin 4. A weighted control voltage, available from pin 6, is obtained from the mute attenuator control voltage via a buffer-amplifier which introduces an additional voltage shift and gain. Level detector The level detector generates a voltage output which is proportional to the field strength of the input signal. The unweighted level detector output is available when the mode switch is operating in the FM, mute-on condition. Tuning-stop outputs The open collector outputs STOP-0 and STOP-1 (from pins 15 and 14 respectively) are voltages derived from the detuning level and the field strength of the input signal. If only one tuning-stop output is required, pins 14 and 15 may be tied together.
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134) SYMBOL VP = V1-17 V5-17 V2-17 V7-17 V13-17 V3-17 V15-17 V14-17 I15 I14 Tstg Tamb Ves Ves Ves Note 1. Equivalent to discharging a 100 pF capacitor through a 1.5 k series resistor. THERMAL RESISTANCE From junction to ambient (in free air) Rth j-a (max.) = PARAMETER Supply voltage (pin 1) Reference voltage range (pin 5) Level adjustment range (pin 2) Mode switch voltage range (pin 7) Control input voltage range (pin 13) THD compensation/unweighted field strength voltage range (pin 3) Tuning-stop output voltage range STOP-0 (pin 15) STOP-1 (pin 14) Tuning-stop output current STOP-0 (pin 15) STOP-1 (pin 14) Storage temperature range Operating ambient temperature range Electrostatic pin 5 pin 6 handling(1) -2000 -2000 -2000 + 2000 + 900 + 1600 all pins except pins 5 and 6 - - -55 -40 2 2 + 150 + 85 -0.3 -0.3 VP VP -0.3 VP -0.3 -0.3 -0.3 -0.3 - MIN. +16 + 10 + 10 VP +6
TDA1596T
MAX. V V V V V V V V
UNIT
mA mA C C V V V
95 K/W
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
CHARACTERISTICS f = 10.7 MHz; VP = V1-17 = 8.5 V; VI = V20 (rms) = 1 mV; Tamb = 25 C; measured in the circuit of Fig.3; tuned circuit at pins 10, 11 aligned for symmetrical stop pulses; all voltages are referred to ground (pin 17), unless otherwise specified SYMBOL Supplies VP = V1 I1 R10-11 C10-11 V4 R4-17 DC output voltage (no-signal condition) at V10, 11(p-p) 100 V; V20(rms) 5 V Output impedance Supply voltage Supply current at I2 = I7 = 0 mA Input impedance 7.5 - 8.5 20 12.0 26 V mA PARAMETER MIN. TYP. MAX. UNIT
FM demodulator 25 - 2.75 - 40 6 3.10 400 55 - 3.45 - k pF V
Mute attenuator control voltage Control voltage (pin 16) V16 V16 R10-17 V2 R2-17 at V20(rms) 5 V at V20(rms) = 1 mV Output impedance (pin 16) Level shift input (pin 2) internal bias voltage at I2 = 0 mA input impedance - - - - 15 2.0 3.45 - 1.4 - - - 2.0 - - V V M V k
Internal muting (Fig.6) Internal attenuation of signals 22.5 kHz detuning 80 kHz; A = 20log[V4(FM mute-off)/V4(FM)] A A A at V16 1 V5 at V16 = 0.77 V5 at V16 = 0.55 V5 - 1.5 - 0 3.0 20 - 4.5 - dB dB dB
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
SYMBOL Attack and decay (pin 16) Pin 13 connected to ground * +I16 -I16 +I16 -I16 Level detector V 6 ------------V 6 T R6 Dependence of output voltage on temperature - 3.3 - charge current discharge current Pin 13 connected to Vref charge current discharge current - - 100 120 - - - - 8 120 - - PARAMETER MIN. TYP.
TDA1596T
MAX.
UNIT
A A A A
mV/VK
Output impedance Dependence of output voltage (pin 6) on input voltage (pin 20) (Fig.7):
-
-
500
V6 V6 V 6 --------------------------20 log V 20
V20(rms) 5 V; I2 = I7 = 0 mA V20(rms) = 1 mV; I2 = I7 = 0 mA Slope of output voltage (pin 6) for input voltage range V20(rms) 50 V to V20(rms) 50 mV Dependence of output voltage (pin 6) on detuning (Fig.8) at input voltage V20(rms) = 10 mV:
0.1 3.0 1.4
0.7 3.6 1.7
1.3 4.2 2.0
V V V/20 dB
V6 f V6 |V6/f|
detuning = 45 kHz detuning for V6 = 1.8 V detuning = 200 kHz Slope of output voltage with detuning = 125 20 kHz at V20(rms) = 10 mV Level shift control (pin 2) (Fig.9) adjustment range adjustment gain output voltage at V2 = V5; V20(rms) 5 V Output voltage at I7 = 0 mA;
- 90 0.5 -
- - 0.7 35
0.2 160 0.9 -
V kHz V mV/kHz
V6 -(V6/V2) V6
1.6 - -
2.0 1.7 -
- - 0.3
V V V
Low-pass filter at pin 8 V8 R8(int) V20(rms) 5 V Internal resistance - 12 2.2 25 - 50 V k
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
SYMBOL PARAMETER MIN. TYP.
TDA1596T
MAX.
UNIT
Tuning-stop detector (Figs 10 and 11) Stop-0: detuning at V20(rms) = 10 mV +f +f -f -f for V15 3.5 V for V15 0.3 V Stop-1: detuning at V20(rms) = 10 mV for V14 3.5 V for V14 0.3 V Dependence of STOP-0, STOP-1 on input voltage (pin 20) input voltage (RMS value) for V20(rms) V20(rms) V14, 15 V14 = V15 3.5 V input voltage (RMS value) for V14 = V15 0.3 V Output voltage when I14 = I15 = 1 mA - - 0.3 V Mode switch and pin 3 (Fig.12) - - 50 V 250 - - V - 18 - - 10 - kHz kHz - 18 - - 10 - kHz kHz
FM-off position
Control voltage for 60 dB V7 muting depth - - 1.4 V
FM, mute-on position (pin 3 = output)
Internal bias voltage at V7 |I7| V3 R3-17 V7 I7 R3-17 V5 V5/I5 TC R7-17 10 M Input current Output voltage with R3-17 = 10 k; C3-17 1 nF* Output impedance for V20 = 5 V; I3 = 500A Control voltage Input current at V7 = V5 Input resistance Output voltage at I5 = -1 mA Output impedance at I5 = -1 mA Temperature coefficient - 0.9 V5 - 1 - - - - 100 - 15 - V A M - 2 - V - - 2.8 - - 2.5 V A
FM, mute-off position (pin 3 = input)
Reference voltage source 3.3 - - 3.7 40 3.3 4.1 80 - V mV/K
* Connecting pin 13 to ground is only allowed for measuring the current at pin 16. It is not for use in application. * Without input voltage.
April 1991
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
OPERATING CHARACTERISTICS f = 10.7 MHz; VI = V20(rms) = 1 mV; deviation (f) = 22.5 kHz; modulation frequency (fm) = 400 Hz; de-emphasiss (pin 4) = 50 s; test circuit as per Fig.3; tuned circuit (QL = 19) aligned for symmetrical stop pulses; Tamb = + 25 C; unless otherwise specified SYMBOL V4(rms) V20(rms) PARAMETER AF output voltage (RMS value) at V20(rms) = 10 mV Start of limiting (FM, mute-off); (RMS value) (Fig.13) Dependence of signal-to-noise ratio (in noise frequency band 250 Hz to 15 kHz, unweighted) on input voltage V18(rms) V18(rms) S/N THD for S/N = 26 dB for S/N = 46 dB at V20(rms) = 10 mV; f = 75 kHz THD (FM, mute-on) at V20(rms) = 10 mV; f = 75 kHz; fm = 1 kHz; without detuning; without de-emphasis; I7 = 0 mA Dynamic mute attenuation (Fig.14) V 4 ( FM mute - off ) D = 20 log --------------------------------------------------------V 4 ( FM , mute - on ) with fm = 100 kHz; f = 75 kHz Df Slope of attenuation curve THD (FM, mute-on) at V20(rms) = 10 mV; f = 75 kHz; fm = 1 kHz; detuning 25 kHz without THD de-emphasis; I7 = 0 mA (Fig.15) THD (FM, mute-off and compensated via pin 3) at V20(rms) = 10 mV; f = 75 kHz; fm = 1 kHz; THD V3 V7 = V 5 Voltage range at pin 3 for THD compensation AM suppression (FM, mute-off) with amplitude modulation at 30% input voltage range V20 = 300 V to 100 mV (Fig.16) Power supply ripple rejection = 20log [V1/V4] Mute attenuation (FM-off) = 20log [V4(FM-on/V4(FM-off)] - 0 - 0.07 - 65 0.25 V5 - % V dB - - 0.6 % - 0.8 - dB/kHz - - - - 15 60 82 0.1 - - - 0.3 V V dB % MIN. 180 14 TYP. 200 22 MAX. 220 35 UNIT mV V
D
-
16
-
dB
33 60
36 -
- -
dB dB
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
April 1991
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Fig.3 Test circuit.
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
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
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
Fig.6
Typical curve of internal attenuation showing the relationship between the mute attenuator control voltage (pin 16) and mute attenuation; I2 = I7 = 0 mA
Fig.7
Weighted field strength output voltage (pin 6) as a function of input voltage (pin 20); R6-17 10 k; I2 = I7 = 0 mA.
April 1991
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
Fig.8
Weighted field strength output voltage (pin 6) as a function of detuning; R6-17 10 k; I2 = I7 = 0 mA; V20 = 10 mV.
Fig.9
Adjustment range of weighted field strength output voltage (pin 6) with level shift control (pin 2); R6-17 10 k; I7 = 0 mA.
April 1991
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
(a) STOP-0.
(b) STOP-1.
Fig.10 STOP-0 and STOP-1 output voltages as a function of detuning, measured at V20 = 10 mV.
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
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
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
(a) mode switch at FM, mute-on
(b) mode switch at FM, mute-off
Fig.13 Audio signal (f = 22.5 kHz; fm = 1 kHz) and noise as functions of input voltage at pin 20; measured with 50 s de-emphasis.
April 1991
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
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; f = 75 kHz; fm = 1 kHz; V20(rms) = 10 mV.
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1596T
(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 f = 22.5 kHz and fm = 1 kHz, and amplitude modulation of 30% at a frequency of 400 Hz; de-emphasis time = 50 s and bandwidth = 250 Hz to 15 kHz.
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
PACKAGE OUTLINE SO20: plastic small outline package; 20 leads; body width 7.5 mm
TDA1596T
SOT163-1
D
E
A X
c y HE vMA
Z 20 11
Q A2 A1 pin 1 index Lp L 1 e bp 10 wM detail X (A 3) A
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 2.65 0.10 A1 0.30 0.10 A2 2.45 2.25 A3 0.25 0.01 bp 0.49 0.36 c 0.32 0.23 D (1) 13.0 12.6 0.51 0.49 E (1) 7.6 7.4 0.30 0.29 e 1.27 0.050 HE 10.65 10.00 0.42 0.39 L 1.4 0.055 Lp 1.1 0.4 0.043 0.016 Q 1.1 1.0 0.043 0.039 v 0.25 0.01 w 0.25 0.01 y 0.1 0.004 Z
(1)
0.9 0.4 0.035 0.016
0.012 0.096 0.004 0.089
0.019 0.013 0.014 0.009
8 0o
o
Note 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. OUTLINE VERSION SOT163-1 REFERENCES IEC 075E04 JEDEC MS-013AC EIAJ EUROPEAN PROJECTION
ISSUE DATE 92-11-17 95-01-24
April 1991
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
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. 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). 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. 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. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 C. Wave soldering
TDA1596T
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. * The longitudinal axis of the package footprint must be parallel to the solder flow. * 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. 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. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. 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.
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Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values
TDA1596T
This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications.
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.
April 1991
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