View TDA1579T_409596.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

INTEGRATED CIRCUITS
DATA SHEET
TDA1579 TDA1579T Decoder for traffic warning (VWF) radio transmissions
Product specification File under Integrated Circuits, IC01 May 1992
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
GENERAL DESCRIPTION The TDA1579 decoder is for radio transmissions having 57 kHz amplitude-modulated subcarriers as used in the German 'Verkehrs Warnfunk' (VWF) traffic warning system. Features
TDA1579 TDA1579T
* Selective subcarrier amplifier (57 kHz) with gain control * Transmitter identification signal (SK) decoder * Area identification signal (BK) and announcement identification signal (DK) active filtering * BK and DK decoders (Schmitt trigger with switched hysteresis) * BK and DK switch-on/switch-off delay circuits * Driver output for SK indicator (LED) * SK and BK control outputs.
QUICK REFERENCE DATA Measured in Fig.1 at ViSK = 8 mV; f = 57 kHz amplitude modulated with fm = 34.95 Hz and m = 60% for `BK-traffic area C' signal; or with fm = 125 Hz and m = 30% for DK signal. PARAMETER Supply voltage Supply current Nominal input voltage Input impedance Control level Input voltage SK switch-on threshold level SK switch hysteresis SK switch-on delay SK switch-off delay DK switch-on threshold level DK switch hysteresis DK switch-on delay DK switch-off delay Ambient operating temperature range PACKAGE OUTLINES TDA1579: 18-lead DIL; plastic (SOT102); SOT102-1; 1996 August 12. TDA1579T: 20-lead mini-pack; plastic (SO20; SOT163A); SOT163-1; 1996 August 12. Tamb -30 - + 80 C mDKon mDK tdDKon tdDKoff - - - - 13 3.6 750 750 - - - - % dB ms ms mBKon mBK tdSKon tdSKoff - - - - 42 3.5 150 750 - - - - % dB ms ms at f = 57 kHz at f 57 kHz -3 dB peak-to-peak value CONDITIONS VP IP ViSK Zi ViSK Vi(p-p) SYMBOL - - 100 - 2 MIN. 7.5 6 8 - 2.4 - TYP. 8.5 - - - - - MAX. 12 V mA mV k mV V UNIT
May 1992
2
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
TDA1579 TDA1579T
RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134). All pin numbers in this table apply to TDA1579; for TDA1579T refer to Fig.1. PARAMETER Supply voltage Switch output voltage CONDITIONS pin 7 pin 1 pins 2 or 3 pins 1, 2 or 3 Switch output current pin 1 pins 2 or 3 pins 1, 2 or 3 Signal input voltage Signal input current Total power dissipation Storage temperature range Operating ambient temperature range Tamb -30 - + 80 C Tstg -55 - +150 C pin 13 pin 13 pin 13 SYMBOL VP = V7-18 V1-18 V2; 3-18 -V1; 2; 3-18 I1 I2; 3 -I1; 2; 3 V13-18 -V13-18 -I13 Ptot - - - - - - - - - - - MIN. - - - - - - - - - - - TYP. MAX. 15 23 15 0.5 50 5 10 VP 0.5 10 800 V mA mW V V V V mA mA mA UNIT
CHARACTERISTICS VP = 8.5 V; Tamb = 25 C; measured at nominal input signal: ViSK = 8 mV, f = 57 kHz amplitude modulated with fm = 34.95 Hz and m = 60% for `BK-traffic area C' signal; or with fm = 125 Hz and m = 30% for DK signal. All pin numbers in this table apply to TDA1579, for TDA1579T refer to Fig.1. PARAMETER Supply voltage Supply current SK amplifier/decoder Input impedance Input voltage (peak-topeak value) Input voltage at start of gain control Voltage gain Gain spread Gain control range Controlled output voltage Vo9BK = -3 dB V9BK/V13SK ViSK Gv9-13 Gv9-13 Gv Vo9BK Vo9DK - - - 40 - - 2.4* 44* - - 440 220 - - 2 - - - mV dB dB dB mV mV Vi(p-p) 2 - - V f 57 kHz |Zi| 100 - - k CONDITIONS pin 7 pin 7 VP IP SYMBOL - MIN. 7.5 - 6 TYP. MAX. 12 10 V mA UNIT
May 1992
3
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
PARAMETER BK circuit Switch-on threshold level Switch hysteresis pin 3 high-Z Vo5BKon V o5BKon --------------------V o5BKoff pin 3 conducting (typ. value = 0.21V8-18) SK output (pin 3) allowable load current saturation voltage rejection voltage Indicator driver (pin 1) allowable load current saturation voltage rejection voltage DK circuit Switch-on threshold level Switch hysteresis pin 2 high-Z V15DKon V 15DKon --------------------V 15DKoff pin 2 conducting V16-18off - 0.6 - 600 3.1 670 3.6 I1 = 20 mA I1 < 10 A I1 V1-18sat V1-18 - - 23 - - - I3 = 1.5 mA I3 < 5 A I3 V3-18sat V3-18 - - 18 - - - V4-18off 0.8 0.88 600 3 670 3.5 CONDITIONS SYMBOL MIN. TYP.
TDA1579 TDA1579T
MAX. UNIT
750 4
mV dB
BK switch threshold level for BK-off (SK-off) 0.97 V
1.5 0.35 - 40 0.8 -
mA V V mA V V
750 4.1
mV dB
DK switch threshold level for DK-off (Schmitt trigger output) (typ. value 1 x VBE) DK output (pin 2) allowable load current saturation voltage rejection voltage BK and DK filter amplifiers Open loop gain Current gain Input bias current Output offset voltage R5-6 = R14-15 = 680 k Available output current Output resistance Allowable load capacitance May 1992 CL 4 - - 50 pF Vo5-8 V15-8 Io Ro - 1 - - - 2 50 - 3.5 mV mA k f = 100 Hz Go Gi Ii 84 120 - - - - - - 50 dB dB nA I2 = 1.5 mA I2 < 5 A I2 V2-18sat V2-18 - - 18 - - - 1.5 0.35 - mA V V V
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
PARAMETER Internal reference voltage Output voltage (typ. value = 0.5 VP) Internal resistance of voltage source Available output current Output short-circuit current (typ. value = VP/1 k) Reference current source Reference voltage (typ. value = V8-18-VBE) Internal biasing resistor Allowable range of external reference resistor * Selectable by R12-8 or Z10-8. R17-18 180 - Ri17 - 5 - V17-18 - 3.6 - R8 -I8 +I8 -I8sc - 2 0.6 - - - - 8 5 - - - V8-18 4.0 4.25 CONDITIONS SYMBOL MIN. TYP.
TDA1579 TDA1579T
MAX. UNIT
4.5
V
mA mA mA
V k k
270
May 1992
5
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
APPLICATION INFORMATION (Fig.1) PARAMETER SK switch-on threshold level at mBK = 60% SK switch-on threshold level at ViSK = 8 mV SK switch hysteresis mBKon m BKon ---------------m BKoff typ. > typ. < typ. tdSKon tdSKoff < > typ. < DK switch-on threshold level at mDK = 30% DK switch-on threshold level at ViDK = 8 mV DK switch hysteresis mDKon m DKon ---------------m Dkoff typ. > typ. < typ. tdDKon tdDKoff < > typ. < Notes 1. Sequence for measuring switch-on delay times (tdon) a) Nominal BK or DK input signal at pin 13: Vi(p-p) = 8 mV; f = 57 kHz; modulation-on. 13 3.1 3.6 4.1 750 1000 600 750 1000 ViDKon typ. 1.5 32 3.0 3.5 4.0 95 130 380 500 620 ViSKon typ. 1.8 SYMBOL
TDA1579 TDA1579T
APPLICATION
UNIT mV % dB dB dB ms ms ms ms ms mV % dB dB dB ms ms ms ms ms
SK switch-on delay (note 1) SK switch-off delay (note 2)
DK switch-on delay (note 1) DK switch-off delay (note 2)
b) Pin 4 of the BK detector (pin 16 of the DK detector) is switched to ground to cause a low signal at the SK output at pin 3 (DK output at pin 2). c) tdon commences when the ground connection is removed from pin 4 (pin 16) as the positive-going VoBK signal at pin 5 (VoDK signal at pin 15) crosses zero. tdon ends when the positive-going edge of the SK output arrives at pin 13 (DK at pin 2). 2. Sequence for measuring switch-off delay times (tdoff) a) Nominal operating conditions as in note 1. b) tdoff commences when the input is switched off as the negative-going VoBK signal at pin 5 (VoDK signal at pin 15) crosses zero. tdoff ends when the negative-going edge of the SK output arrives at pin 3 (DK at pin 2).
May 1992
6
May 1992
Philips Semiconductors
Decoder for traffic warning (VWF) radio transmissions
7
L = 2.36 mH; QL = 70; C = 3.3 nF; fo = 57 kHz. Pin numbers in parentheses are for TDA1579T, other pin numbers are for TDA1579.
(1) fo = 55 Hz; Q = 1.9 (2) fo = 24 Hz; Q = 1.9 (3) fo = 125 Hz
Product specification
TDA1579 TDA1579T
Fig.1 Application diagram.
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
TDA1579 TDA1579T
Fig.2
BK signal voltage at pin 5 as a function of frequency.
Fig.3
DK signal voltage at pin 15 as a function of frequency: fo = 125 Hz; Q 18.
Fig.4 Control characteristic of the SK amplifier at VP = 8.5 V, mBK = 60% and QL = 70.
May 1992
8
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
FILTER INFORMATION Gain Amplifier conditions: Go >> Gv and Go >> 2 Q2 p ------------------Vo R1 C1 G v = - ------------------------------------------------------------------------------------------------------------------ , in which p = j and Gv = ----- . Vi 2 C1 + C2 R1 + R2 p + p -------------------------------- + --------------------------------------------------------R3 C1 C2 R1 R2 R3 C1 C2
TDA1579 TDA1579T
C1 = C2 = C GENERAL EQUATION Resonance frequency 1 r = ---------------------------------------------------------------R1 R2 --------------------- R3 C1 C2 R1 + R2 C1 = C2 = C R2 < < R1 1 ------------------------------------------R1 R2 C --------------------- R3 R1 + R2 1 ---------------------------C R2 R3
Gain at = r
C2 R3 -Gvr = --------------------- ------C1 + C2 R1 C1 C2 R3 ( R1 + R2 )------------------------ ------------------------------------R1 R2 C1 + C2
1 R3 -- ------2 R1
1 R3 -- ------2 R1
Quality Q=
1 R3 ( R1 + R2 ) -- ------------------------------------R1 R2 2
1 R3 -- ------2 R2
Recommended components C1, C2 and R1, R2, R3 or C1, C2 and R1, R2, R3 carbon film (CR) resistors; 2% metallized polyester film (MKT) capacitors; 5% metal film (MR) resistors; 2% metallized polycarbonate film (MKC) capacitors; 5%
May 1992
9
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
PACKAGE OUTLINES DIP18: plastic dual in-line package; 18 leads (300 mil)
TDA1579 TDA1579T
SOT102-1
D seating plane
ME
A2
A
L
A1
c Z e b1 b 18 10 b2 MH wM (e 1)
pin 1 index E
1
9
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 4.7 0.19 A1 min. 0.51 0.020 A2 max. 3.7 0.15 b 1.40 1.14 0.055 0.044 b1 0.53 0.38 0.021 0.015 b2 1.40 1.14 0.055 0.044 c 0.32 0.23 0.013 0.009 D (1) 21.8 21.4 0.86 0.84 E (1) 6.48 6.20 0.26 0.24 e 2.54 0.10 e1 7.62 0.30 L 3.9 3.4 0.15 0.13 ME 8.25 7.80 0.32 0.31 MH 9.5 8.3 0.37 0.33 w 0.254 0.01 Z (1) max. 0.85 0.033
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT102-1 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION
ISSUE DATE 93-10-14 95-01-23
May 1992
10
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
SO20: plastic small outline package; 20 leads; body width 7.5 mm
TDA1579 TDA1579T
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 Lp 1.1 0.4 Q 1.1 1.0 0.043 0.039 v 0.25 0.01 w 0.25 0.01 y 0.1 Z
(1)
0.9 0.4
0.012 0.096 0.004 0.089
0.019 0.013 0.014 0.009
0.043 0.055 0.016
0.035 0.004 0.016
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
May 1992
11
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
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). DIP SOLDERING BY DIPPING OR BY WAVE 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 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. REPAIRING SOLDERED JOINTS 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. 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.
TDA1579 TDA1579T
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 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.
May 1992
12
Philips Semiconductors
Product specification
Decoder for traffic warning (VWF) radio transmissions
DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values
TDA1579 TDA1579T
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.
May 1992
13

▲Up To Search▲

Price & Availability of TDA1579T

	To Download TDA1579T Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .