U4935B TEMIC | Alldatasheet
Document overview
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Technical content
Features
/C0068Fully integrated and auto-tuned filters /C0068Minimum number of external components /C0068Easy interfacing with the TV baseband processor and the switched capacitor baseband delay line Package 16-pin dual in-line plastic (DIP16) Block Diagram Bandgap Bell filterACC AMP PLL 12 13 Bell-filter tuning Ident Interface PLL tuning Pulse gen. De– emphasis B –Y output R –Y output SECAM sw. Band gap – (B–Y) out – (R–Y) out 15 8 15 6 14 11 fref/ ident Killer out PLL ref0.47 SCP in GND Black adj. R Black adj. B Bell filter ref CVBS in Bell filter out 0.1 PLL auto2 PLL auto1 0.1 22 V S = 8 V 96 11715 F/C0109 F/C0109 F/C0109 F/C0109 Figure 1. Block diagram
Ordering Information
Extended Type Number Package Remarks U4935B-ADP DIP16
2 Bell out Bell-filter output
3 V S 8-V supply voltage
4 Band gap Band-gap reference voltage
5 Killer out SECAM killer output
6 GND Ground
7 Bellref Bell-filter reference /C0042
8 PLLref PLL reference
12 PLL 1 PLL auto 2
13 PLL 2 PLL auto 1
15 SCP Sandcastle pulse input
16 CVBS CVBS input
Figure 2. Connection diagram
Rev. A1, 28-Jan-97 3 (16) 250 500 750 1000 1250 1500 0 25 50 75 100 125 150 Power dissipation Pd ( mW ) Ambient temperature Tamb ( °C )96 11702 Figure 3. Thermal derating curve of the package
Electrical Characteristics
V S = 8 V , Tamb = 25°C, reference point Pin 6, unless otherwise specified Test conditions: Vpin 1 = 4.75 V , Vpin 16 = 4 V , unless otherwise specified Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit DC supply Supply voltage VS Pin 3V S 7.5 8.0 8.5 V Supply current IS Pin 3 Note 1 IS 18 24 30 mA Bell filter Resonance frequency f = 4.0 - 5.0 MHz sweep signal with 20 mV peak-to-peak amplitude at the CVBS input (see note 2, page 5), Pin 2 fBO 4.236 4.286 4.336 MHz Bandwidth f = 4.0 - 5.0 MHz sweep signal with 20 mV peak-to-peak amplitude at the CVBS input, Pin 2 fBW 250 320 368 kHz Demodulator Output DC level during blanking Pins 9 and 10V O 2.1 2.8 3.5 V Black level error –(R–Y) Black/ white signal at the CVBS input (see note 4, page 5), Pin 9 /C0068V RB –15 +15 mV Black level error –(B–Y) Black/ white signal at the CVBS input (see note 4, page 5), Pin 10 /C0068V BB –50 +20 mV –(R–Y) output signal amplitude (peak-to-peak value) (see note 1, page 5), Pin 9V R–Y 0.85 1.0 1.15 V –(B–Y) output signal amplitude (peak-to-peak value) (see note 1, page 5), Pin 10V B–Y 1.05 1.24 1.36 V
Rev. A1, 28-Jan-97 Preliminary Information 4 (16) UnitMax.Typ.Min.SymbolTest Conditions / PinsParameters Ratio of –(B–Y)/–(R–Y) output signal amplitude V B–Y /VB– Y 1.10 1.24 1.36 Linearity (see notes 1 and 3, page 5) Pin 10 V LIN 2.6 2.9 3.2 Sandcastle pulse (see figures 16 and 17) Vertical blanking detection level Pin 15V VB 1.0 1.25 1.4 V Horizontal blanking detection level Pin 15V HB 1.75 2.0 2.25 V Burst-gate detection level Pin 15V BG 3.5 3.85 4.2 V Reference/ Identification Reference frequency During vertical blanking (see figure 4, 300 mVpp) Pin 1 fref 4.4336 MHz System switches detection level (at SECAM) V ext1 = variable (see figure 6), Pin 1 V TH1 2.9 3.3 V System switches detection level (at no SECAM) V ext1 = variable (see figure 6), Pin 1 V TH2 1.5 2.0 V Sink current (at SECAM) (see note 5, page 5), Pin 1 125 180 235 /C0109A Pin 5 voltage (at SECAM) (see note 1, page 5), Pin 5V 5S 2.4 3.1 3.6 V Sensitivity of identification and killer Attenuate the amplitude (see notes 1 and 6, page 5) Pin 5 I/K –46 –38 –32 dB Unspecified characteristics (only for reference but not guaranteed limiting values) Input dynamic range (peak-to-peak value) Pin 16V DR 1.0 1.4 V Chrominance input voltage (peak-to-peak value) (see note 7, page 5), Pin 16V CL 167 300 mV Pole frequency of the de-emphasis LPF fp 85 kHz Ratio of the pole and zero frequency fp/fo 3 –(R–Y), –(B–Y) output impedance (at SECAM) Pins 9 and 10Zo1 200 600 /C0087 –(R–Y), –(B–Y) output impedance (at no SECAM) Pins 9 and 10Zo2 1 M /C0087 Reference voltage amplitude (peak-to-peak value) (see note 8, page 5), Pin 1V ref 0.2 0.57 V Rising edge of SECAM burst-gate pulse (internal generated) (see note 9, page 5) Tr 4.5 /C0109s Falling edge of SECAM burst-gate pulse (see note 10, page 5) Tf 0.2 /C0109s
Figure 6. fref / ident Figure 7. Bell-filter output Figure 8. Band gap
4.3 V 2 W
Figure 9. SECAM killer output Figure 10. Bell-filter reference Figure 11. PLL reference
Figure 12. –(R–Y), –(B–Y) output Figure 13. Black level adjust –(B–Y), –(R–Y) channel Figure 14. PLL auto 1, 2
50 A/C010950 A/C0109 50 A/C0109
Figure 15. Sandcastle input Figure 16. CVBS input
4.433619 MHz during vertical blanking
4.286 MHz during scanning
4.33 MHz during burst gating. not, this can result in a resonance frequency error.
4.286 MHz
4.434 MHz
Figure 17. Block diagram of the bell filter
blanking and is held during scanning. and is controlled by the tuning voltage of the PLL. ensured, a black-level error for both channels may result. Figure 18. Block diagram of the demodulator
demodulator which uses the bell filter as a phase shifter. identification) is implemented. “color on” is transmitted to Pin 1 (current sink: 180 /C0109A). depending on the logic level at Pin 1. Figure 19. Block diagram of the identification
5.0 VDC at SECAM
1.5 VDC at no SECAM
Figure 20. Timing waveforms of the output stage
Rev. A1, 28-Jan-97 13 (16) Typical Voltages Pin Function DC V oltage Comment 1 fref / ident For the - reference input, - PAL system identification input, - SECAM killer-signal output. 180 /C0109A typ. at SECAM 0 /C0109A typ. at no SECAM System switches detection level = 2.9 V . 2 Bell-filter output 1.7 V
3 Supply voltage 8 V
4 Bell-filter ref. voltage output 4.3 V 5 SECAM killer output 3.1 V 0 V When SECAM When no SECAM
6 Ground
7 Bell-filter reference 3.3 V 8 PLL reference 4.3 V The capacitor should be connected as close as possible to the ground pin of the package. 9 –(R–Y) output 2.8 V 1.0 V (peak-to-peak value) when the color-bar signal at Pin 16 is 100/75. 10 –(B–Y) output 2.8 V 1.24 V (peak-to-peak value) when the color-bar signal at Pin 16 is 100/75 11 Black level adjust B - channel 4.16 V Black-level error can be compensated by an external resistor 12 PLL auto 2 5.0 V Capacitor between Pin 12 and Pin 13 improves color S/N ratio. The value of the capacitor is typ. 0.1 /C0109F. 13 PLL auto 1 5.0 V Capacitor between Pin 12 and Pin 13 improves color S/N ratio. The value of the capacitor is typ. 0.1 /C0109F. 14 Black level adjust R - channel 4.28 V Black-level error can be compensated by an external resistor
15 Sandcastle-pulse (SCP) input
16 CVBS input 2.05 V
Figure 23. Basic application circuit
Rev. A1, 28-Jan-97 15 (16)
Package Information
0.58 0.48 4.8 max 0.39 max 20.0 max 7.82 7.42 9.75 8.15 96 11709 technical drawings according to DIN specifications technical drawings according to DIN specifications technical drawings according to DIN specifications 19.8 max 0.5 min 3.3 1.64 1.44 2.54 17.78 6.4 max 16 15 14 13 12 11 10 9 12345678 Alternative Dimensions in mm
Rev. A1, 28-Jan-97 Preliminary Information 16 (16) Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423