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PDF 44BC374 Data sheet ( Hoja de datos )
| Número de pieza | 44BC374 | |
| Descripción | MC44BC374 | |
| Fabricantes | Motorola Semiconductors | |
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www.DTaetacShheneti4cUa.cloDm ata
MC44BC373/374
Rev. 3.5, 7/2003
MC44BC373/374
Multi-Standard or PAL/
NTSC Modulator with
integrated antenna
booster/splitter ICs
Freescale Semiconductor, Inc.
MC44BC373/374
TSSOP 24 Package
Ordering Information
Device
Temp Range
Package
MC44BC373DTB, R2
MC44BC374DTB, R2
–10oC to +80oC
TSSOP 24
NOTE: For tape and reel, add R2 suffix.
Contents
1 Features . . . . . . . . . . . . . 2
2 Device Overview . . . . . . 3
3 Maximum Ratings . . . . . 5
4 Electrostatic Discharge 5
5 Electrical
Characteristics
5
6 I2C Bit Mapping . . . . . . . 6
7 I2C Programming . . . . . 7
8 Modulator High
Frequency
Characteristics
9
9 Video Characteristics . 10
10 Audio Characteristics . 11
11 Antenna Booster/Splitter
Characteristics
12
12 Modulator Operation . 14
13 High-Speed I2C
Compatible Bus
18
14 Application and
Case Diagrams
21
These modulator ICs are for use in VCRs, games, set-top boxes, and similar devices.
Figure 1 shows the pin connections.
SCL 1 24 GNDD
SDA 2 23 VCCD
LOP 3 22 PLLFLT
XTAL 4 21 TVOVCC
GND 5 20 TVOUT
ANT1 6 19 GND
ANT2 7 18 GND
GND 8 17 VCRTU
PREEM 9 16 VCRVCC
AUDIO 10 15 VCCA
SPLFLT 11 14 VIDEO
AUXIN 12 13 VCCI
Figure 1. MC44BC373/374 Pin Connections
This document contains information on a product under development. Motorola reserves the right to change or
discontinue this product without notice. © Motorola, Inc., 2003. All rights reserved.
For More Information On This Product,
Go to: www.freescale.com
1 page  
Freescale Semiconductor, Inc.
www.DataSh3eet4UM.comaximum Ratings
Maximum Ratings
Sym
Parameter
Value Unit
Vcc1 Supply Voltage
6
Tamin Minimum Operating Ambient Temperature –10
Tamax Maximum Operating Ambient Temperature 75
Tstgmin Minimum Storage Temperature
–65
Tstgmax Maximum Storage Temperature
150
V
oC
oC
oC
oC
This device contains protection circuitry to
guard against damage due to high static
voltage or electric fields. However, precautions
must be taken to avoid applications of any
voltage higher than maximum rated voltages to
this high impedance circuit. For proper
operation, input and output voltages should be
constrained to the ranges indicated in the
Recommended Operating Conditions.
Maximum ratings are those values beyond which damage to the device may occur. For functional
operation, voltage should be restricted to the Recommended Operating Condition.
4 Electrostatic Discharge
Sym
ESD
Parameter
HBM (Human Body Model)—MIL-STD-883C, Method 3015-7
Min
4000
Typ
6000
Unit
V
5 Electrical Characteristics
• A = 100% Tested
• B = 100% Correlation tested
• C = Characterized on samples
• D = Design parameter
5.1 Specification Conditions
Unless otherwise stated: Vcc = 5.0 V, Ambient Temperature = 25o C, Video Input 1Vp-p, 10-step
grayscale. RF inputs/outputs into 75Ohm load. SPECIFICATIONS ONLY VALID FOR ENVELOPE
DEMODULATION.
Parameter
Operating supply voltage range
Total supply current
Total standby mode supply current
Test pattern sync pulse width
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
Min Typ Max Unit
Notes
4.5 5.0 5.5 V
65 75 88
All sections active
26
34
40
mA
OSC, SO, ATT=1
Bus Section active
3 4.7 6.5 µS
7 10 12 µA
0.7 1 1.5 µA
60 100 150 µA
1 — — KΩ
— 160 300 mV
— — 1 µA
Type
B
A
A
B
A
A
A
D
A
A
MOTOROLA
MC44BC373/374 Technical Data
For More Information On This Product,
Go to: www.freescale.com
5
5 Page 
Freescale Semiconductor, Inc. Audio Characteristics
10 Audiowww.DataSheet4U.com Characteristics
Unless otherwise stated: Vcc = 5.0 V, Ambient Temperature = 25 o C, Video Input 1Vp-p, 10-step
grayscale. RF inputs/outputs into 75Ohm load. SPECIFICATIONS VALID ONLY FOR ENVELOPE
DEMODULATION.
Parameter
Test Conditions
Min Typ Max Unit Type
Picture-to-Sound ratio
PS bit set to 0.
PS bit set to 1.
13
9
16
12
19
15
dB
Using specific pre-emphasis circuit,
audio input level=205mVrms–audio frequency=1kHz
Audio modulation depth
AM modulation: SECAM Fs=6.5MHz
65 80 95 %
FM modulation: Fs=5.5, 6 or 6.5MHz
100% modulation=±50kHz FM deviation
65
80
95
%
FM modulation: NTSC Fs=4.5MHz
100% modulation=±25kHz FM deviation
65
80
95
%
Audio input resistance
—
45 53 61 KΩ
Audio Frequency response
Reference 0dB at 1kHz,
using specified pre-emphasis circuit,
measure from 50Hz to 15kHz.
–2.5 — +2 dB
Audio Distortion FM (THD only)
At 1kHz, 100% modulation (±50kHz).
No video.
— 0.4
2
%
Audio Distortion AM (THD only)
At 1kHz, 100% modulation.
No video.
— 1.5 2.5 %
Audio S/N with Sync Buzz FM
Video input EBU color bar 75%.
Weighting filter CCIR 468-2.
48 53 — dB
B
B
B
B
A
C
C
D
C
Audio S/N with Sync Buzz AM
Reference 1kHz, 85% modulation.
Video input EBU color bar 75%.
Audio BW from 40Hz to 15kHz.
Weighting filter CCIR 468-2.
45 50 — dB D
Audio Signal to Noise
58
56
54 Typical
52
50
48
Minimum specification
46
471 521 571 621 671 721 771 821 871
Frequency (Mhz)
Figure 5. Typical performance—Audio
MOTOROLA
MC44BC373/374 Technical Data
For More Information On This Product,
Go to: www.freescale.com
11
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