saa7157 NXP Semiconductors, saa7157 Datasheet
saa7157
Available stocks
Related parts for saa7157
saa7157 Summary of contents
Page 1
... DATA SHEET SAA7157 Clock signal generator circuit for digital TV systems (SCGC) Product specification File under Integrated Circuits, IC02 INTEGRATED CIRCUITS May 1992 ...
Page 2
... Suitable for applications with feature box and picture memory GENERAL DESCRIPTION The SAA7157 generates all clock signals required for a digital TV system suitable for the SAA715x family and the SAA7199B (DENC). The circuit operates in either the phase-locked loop mode (PLL) or voltage controlled oscillator mode (VCO) ...
Page 3
... LFCO2 2 CE FUNCTIONAL DESCRIPTION The SAA7157 generates all clock signals required for a digital TV system suitable for the SAA715x family consisting of an 8-bit analog-to-digital converter (ADC8), digital video multistandard decoder (DMSD2) and video enhancement and D/A processor circuit (VEDA). Optional extras (feature box, video memory etc.) can be driven via external buffers, advantageous for a digital TV system based on display standard conversion concepts ...
Page 4
... V) SSD4 LFCO2 19 line-locked frequency control input signal 2 LL3B 20 line-locked clock output signal 3B (2 times f Note 1. MS and LFCO2 functions are not tested. LFCO2 is a multiple of horizontal frequency. May 1992 ) LFCO ) LFCO ) LFCO ) LFCO (1) (1) ) LFCO 4 Product specification SAA7157 ...
Page 5
... Inputs and outputs are protected against electrostatic discharge in normal handling. However totally safe recommended to take normal handling precautions appropriate to “Handling MOS devices” . May 1992 Fig.2 Pin configuration. PARAMETER V DDA DDD = 20 mA) (1) for all pins 5 Product specification SAA7157 MIN. MAX. UNIT 0.5 7.0 V 0.5 7 100 mV ...
Page 6
... I ) note Fig.4 LFCOSEL others 0 0.1 F; Fig 0 Fig.3 Fig.3; note 1 Fig.3; note 1 6 Product specification SAA7157 = unless otherwise specified. MIN. TYP. MAX. 4.5 5.0 5.5 4.5 5 DDA 1 V DDA 6.0 7. 0.8 2.0 V DDD 6 ...
Page 7
... Fig.3 note 1; Fig.3 note 1; Fig.3; at 1.5 V level and V short connected together. SSA SSD LL1.5 t LL1.5H t LL1. LL3 t LL3H t f Fig.3 Output timing. 7 Product specification SAA7157 MIN. TYP. MAX 0.6 2 DDD - LFCO( LFCO( LFCO(2) ...
Page 8
... PLL lock-on reset procedure Fig.4 Reset procedure. V DDD V SSD Fig.5 Internal circuit. 8 Product specification oscillation disturbed t d normal operation MEH457 power failure starts a new V DDD LL1.5A 20 LL1.5B LL3A LL3B CREF V SSD V DDD 12 RESN V SSD MEH468 SAA7157 3 ...
Page 9
... 1.73 0.53 0.36 26.92 6.40 1.30 0.38 0.23 26.54 6.22 0.068 0.021 0.014 1.060 0.25 0.051 0.015 0.009 1.045 0.24 REFERENCES JEDEC EIAJ SC603 9 Product specification 3.60 8.25 10.0 2.54 7.62 3.05 7.80 8.3 0.14 0.32 0.39 0.10 0.30 0.12 0.31 0.33 EUROPEAN PROJECTION SAA7157 SOT146 ( max. 0.254 2.0 0.01 0.078 ISSUE DATE 92-11-17 95-05-24 ...
Page 10
... REFERENCES JEDEC EIAJ MS-013AC detail 1.1 1.1 1.4 0.25 0.25 0.4 1.0 0.043 0.043 0.01 0.01 0.055 0.016 0.039 EUROPEAN PROJECTION Product specification SAA7157 SOT163 ( 0.9 0 0.035 0.004 0.016 ISSUE DATE 95-01-24 97-05-22 ...
Page 11
... 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 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 11 Product specification SAA7157 ...
Page 12
... Philips customers using or selling these products for use in such applications their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. May 1992 12 Product specification SAA7157 ...