mc44bc373c Freescale Semiconductor, Inc, mc44bc373c Datasheet

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mc44bc373c

Manufacturer Part Number
mc44bc373c
Description
Pll Tuned Uhf And Vhf Audio/video High Integration Modulator
Manufacturer
Freescale Semiconductor, Inc
Datasheet
This document contains information on a product under developmentFreescale. Freescale. reserves the right to change or
discontinue this product without notice. © Freescale Semiconductor, Inc., 2002. All rights reserved.
Technical Data
MC44BC373C/D
Rev. 3.1 7/2002
MC44BC373C/374C
PLL Tuned UHF and
VHF Audio/Video High
Integration Modulator
Contents List
1 Features . . . . . . . . . . . . . 2
2 Device Overview . . . . . . 3
3 Maximum Ratings . . . . . 4
4 Thermal Rating . . . . . . . 4
5 Electrostatic Discharge 4
6 Electrical
7 I2C Bit Mapping . . . . . . . 6
8 I2C Programming . . . . . 7
9 Modulator High
10 Video Characteristics . 10
11 Audio Characteristics . 11
12 Characterization
13 Modulator Description 17
14 High Speed I2C
15 Pin Circuit
16 Application and Case
Characteristics
Frequency
Characteristics
Measurement
Conditions
Compatible Bus
Schematics
Diagrams
12
21
24
25
5
9
The modulators are for use in VCRs, set-top boxes, and similar devices.
Figure 1 shows the pin connections.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
Figure 1. MC44BC373C/4C Pin Connections
SPLFLT
PREEM
AUDIO
XTAL
GND
SDA
LOP
SCL
1
2
3
4
5
6
7
8
MC44BC373C/374C
SO16NB Package TSSOP16 Package
MC44BC373CDTB,R2
MC44BC374CDTB,R2
MC44BC373CD,R2
MC44BC374CD,R2
16
15
14
13
12
11
10
9
Device
NOTE: For tape and reel, add R2 suffix.
GNDD
VCCD
PLLFLT
TVOVCC
TVOUT
GND
VCCA
VIDEO
Ordering Information
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
Temp Range
TSSOP16
TSSOP16
Package
SO16NB
SO16NB

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mc44bc373c Summary of contents

Page 1

... SDA 2 LOP 3 XTAL 4 GND 5 6 PREEM AUDIO 7 SPLFLT 8 Figure 1. MC44BC373C/4C Pin Connections For More Information On This Product, Go to: www.freescale.com Ordering Information Device Temp Range Package -20°C to +85°C SO16NB -20°C to +85°C SO16NB -20°C to +85°C TSSOP16 -20°C to +85°C TSSOP16 NOTE: For tape and reel, add R2 suffix ...

Page 2

... The modulation standard can be chosen using a control bit that selects between System L or System B/G (MC44BC373C only). The picture-to-sound ratio may be adjusted using the bus. In addition, an on-chip video test pattern generator can be switched ON with a 1KHz audio test signal. The MC44BC373C/4C also has the following features: • No external varicaps diodes/inductor or tuned components • ...

Page 3

... UHF/VHF carrier An on-chip video test pattern generator with an audio test signal is included. The MC44BC373C operates as a multi-standard modulator and can handle the following systems using the same external circuit components: B/G, I, D/K, L, M/N. High frequency BiCMOS technology allows integration of the UHF tank circuit and certain filtering functions ...

Page 4

... Electrostatic Discharge (ESD) tests are done on all pins. Sym MM (Machine Model) - MIL STD 883C method 3015-7 ESD HBM (Human Body Model) - MIL STD 883C method 3015-7 ESD MC44BC373C/374C Technical Data For More Information On This Product, Value Unit This device contains protection circuitry to guard 6 V against damage due to high static voltage or electric fields ...

Page 5

... Sound comparator charge pump current During locking When locked RF comparator charge pump current Crystal oscillator stability—negative resistance Logic Output Port Saturation voltage at I=2mA Leakage current MC44BC373C/374C Technical Data For More Information On This Product Video Input 1V Min Typ Max Unit 4 ...

Page 6

... Logic Output Port PS Picture-to-sound carrier ratio SYSL System L enable—selects AM sound and positive video modulation (MC44BC373C only) TPEN Test pattern enable—picture and sound X5…X0 Test mode bits—All bits are 0 for normal operation (see Test Mode tables, page 6 & page 7) N0… ...

Page 7

... Transient output inhibit disabled (ie speed up mode 1.h During this speed-up test mode, ATT=0 forces sound current source to 1µA, and ATT=1 forces it to 10µA. MC44BC373C/374C Technical Data For More Information On This Product, UHF OSC 0 Normal operation UHF oscillator disabled (oscillator and PLL ...

Page 8

... Y1 0 VCO out of range, frequency too low, only valid if OOR=1 1 VCO out of range, frequency too high, only valid if OOR High VCO is active 1 Low VCO is active MC44BC373C/374C Technical Data For More Information On This Product, Description NOTE: Description Description Description Go to: www.freescale.com ...

Page 9

... Minimum specification 621 821 871 MC44BC373C/374C Technical Data For More Information On This Product, Modulator High Frequency Characteristics o C, Video Input 1V Test Conditions Output signal from modulator section See Figure 3 ...

Page 10

... CCIR Test Line 330, worst case from the Differential Gain first 4 steps out of 5. See Note 2 Luma/Sync ratio Input ratio 7.0:3.0 PAL video modulation depth See Figure 4. See Note 2 MC44BC373C only - See Figure 4. See SECAM video modulation depth Note ...

Page 11

... Audio BW 40Hz—15kHz Weighting filter CCIR 468 MC44BC373C/374C Technical Data For More Information On This Product Video Input 1V Test Conditions Audio Signal to Nois e Typical Minimum specification 471 521 571 621 671 721 771 821 871 Fr e que ncy ( Figure 5 ...

Page 12

... No Video signal No Audio signal Video: 10 steps grey scale No Audio signal MC44BC373C/374C Technical Data For More Information On This Product, Measurement Set-up TVOUT output level Measured picture carrier in dBuV with the HP8596E Spectrum Analyzer using ohm transformation, all cables losses and transformation pads having been calibrated ...

Page 13

... Frequency 700mVpkpk 4.43Mhz 100kHz 700mV pk-pk No Video signal No Audio signal MC44BC373C/374C Technical Data For More Information On This Product, Characterization Measurement Conditions Measurement Set-up Measure in dBc, in reference to picture carrier (TVout_Ref), second harmonic of chroma at channel frequency plus 2 times chroma frequency, resulting in the following spectrum ...

Page 14

... CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap, and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. MC44BC373C/374C Technical Data For More Information On This Product, Measurement Set-up Out of Band Spurious Measure in dBuV spurious levels at 0.25, 0.5, 0.75 and 1.5 times channel frequency, resulting in the following spectrum ...

Page 15

... Video Black Level Audio signal: 1Khz, 205mVrms. This is measured using a Rohde & Schwarz AMFS Demodulator in B/G and a HP8903A Audio Analyzer at 1kHz MC44BC373C/374C Technical Data For More Information On This Product, Characterization Measurement Conditions Measurement Set-up Video Differential Gain On line CCIR 330 shown below, the video analyzer DG measure consists of calculating the difference of the Chroma amplitude at the black level and the different amplitudes at each step of the greyscale ...

Page 16

... Schwarz AMFS Demodulator in B/G and a HP8903A Audio Analyzer at 1kHz. The output level of the Audio analyzer is varied to obtain a Modulation Deviation of 25kHz indicated on the AMFS Demodulator. MC44BC373C/374C Technical Data For More Information On This Product, Measurement Set-up Audio Frequency response The audio signal 1KHz 100mV ...

Page 17

... Freescale Semiconductor, Inc. 13 Modulator Description 13.1 Power ON Settings At power-ON, the MC44BC373C/4C configuration is as follows: WRITE MODE Bit 7 C1—High Order Bits C0—Low Order Bits FM—High Order Bits FL—Low Order Bits N0 to N11 are set to have UHF oscillator on channel 36 (591.25MHz). Note: Peak White Clip is ON. ...

Page 18

... SFD1 and SFD0 bits have the same definition for both bus formats (MC44353 and MC44BC373C/4C) and allows a select sound frequency between 4.5MHz, 5MHz, 5.5MHz, and 6.5MHz. • SYSL bit is the same definition for both bus formats (MC44353 and MC44BC373C/4C) and allows a select system L or BG. • ...

Page 19

... The video signal is then passed to a Peak White Clip circuit. The PWC circuit function is to soft-clip the top of the video waveform if the “sync tip amplitude” to “peak white clip” goes too high. This method avoids carrier over-modulation by the video. Clipping can be disabled by software. MC44BC373C/374C Technical Data For More Information On This Product, F ...

Page 20

... An FM modulator incorporating the sound subcarrier oscillator • modulator (MC44BC373C only) The audio input signal is AC-coupled into the amplifier, which then drives both types of modulator. The audio pre-emphasis circuit is a high-pass filter with an external capacitor and an internal resistor (100kOhms). The recommended capacitor value (470pF) is for BG standard; time constant is 50µS. ...

Page 21

... SCL fall/rise time Pulse width of spikes suppressed by the input filter 14.2 Timings Definition Tbuf Stop Start Chip Address SSDA SSCL Tsu;sto Thd;sta Tsu;dat MC44BC373C/374C Technical Data For More Information On This Product, High Speed I2C Compatible Bus o C. Min — — 3.0 –5 — ...

Page 22

... If three data bytes are received, the third one is ignored. • If five or more data bytes are received, the fifth and following ones are ignored, and the last ACK pulse is sent at the end of the fourth data byte. MC44BC373C/374C Technical Data For More Information On This Product, Vcc Vih ...

Page 23

... The incoming information consists of the read mode chip address byte. The device then answers with an ACK followed by one byte containing three bits of status information. No acknowledge is answered by the modulator after this byte. MC44BC373C/374C Technical Data For More Information On This Product, High Speed I2C Compatible Bus ...

Page 24

... SDA ACK VCC 5K XTAL 1.5K VCC PREM 11.8k VCC VCC 5K SPLLFLT VCC VCC 100 PLLFLT 2K MC44BC373C/374C Technical Data For More Information On This Product, VCC 1/2 VCCD SCL 10k audio Go to: www.freescale.com VCCD 25K 1/2 VCCD VCC LOP VCC 50k AUDIO IN VCC TV OUT VCC 75 TVOVCC ...

Page 25

... O Audio Note 1: Cx value depends on crystal characteristics 27pF on Freescale application board. Note 2: Loop Filter components must be as close as possible to pins 14 and 15. Figure 7. Proposed MC44BC373C/4C Application Schematic MC44BC373C/374C Technical Data For More Information On This Product, Vcc SCL ...

Page 26

... MC44BC373CDTB device 374C for MC44BC374CDTB device (Part number coded on 4 digits) • 3rd line: Assembly site code A (1 digit) followed by the wafer lot code L (1 digit), ...

Page 27

... Figure 8. SO16NB Package MC44BC373C/374C Technical Data For More Information On This Product, Go to: www.freescale.com Application and Case Diagrams 1. Dimensions and Tolerances per ASME Y14.5M, Note: 1994. Max 2. Controlling dimension: Millimeters. Note: 3. Dimension D and E1 do not include mold Note: ...

Page 28

... Freescale Semiconductor, Inc. Application and Case Diagrams MC44BC373C/374C Technical Data For More Information On This Product, Figure 9. TSSOP16 Package Go to: www.freescale.com ...

Page 29

... Freescale Semiconductor, Inc. MC44BC373C/374C Technical Data For More Information On This Product, Go to: www.freescale.com Application and Case Diagrams ...

Page 30

... Freescale Semiconductor was negligent regarding the design or manufacture of the part. MC44BC373C/D Go to: www.freescale.com ...

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