MOTOROLA MC44BC375, MC44BC375U, MC44BC375J, MC44BC375T Technical data

Freescale Semiconductor, Inc.

MC44BC375 Freescale Semiconductor, Inc.

Technical Data

MC44BC375/D
Rev. 2.6 01/2003
MC44BC375/U/J/T	MC44BC375/U/J/T
PLL Tuned VHF Audio/
Video High Integration
Modulator ICs

SO16 Package

Ordering Information

Device	Temp. Range	Package
MC44BC375UD, R2
MC44BC375JD, R2	-20°C to +85°C	SO16NB
MC44BC375TD, R2

NOTE: For tape and reel, add R2 suffix.

Contents List

1Features . . . . . . . . . . . . . 2

2Device Overview . . . . . . 3

3Maximum Ratings . . . . . 4

4Thermal Rating . . . . . . . 4

5Electrostatic Discharge 4

6Electrical

Characteristics 5

7Pin Selection . . . . . . . . . 6

8High Frequency Characteristics

(U Version)

6

9Video Characteristics . . 7

10Audio Characteristics . . 7

11Characterization Measurement

	Conditions	7
12	Modulator
	Functionality	11
13	Pin Circuit Schematics 14
14	MC44BC375U Application
	Schematic	15
15	Markings and Case
	Diagrams	16

This modulator circuit is for use in VCRs, set top boxes and similar devices. The device differences are as follows:

•MC44BC375U VHF [CH3 & CH4] (Americas)

•MC44BC375J VHF [CH1 & CH2] (Japan)

•MC44BC375T VHF [CH13] (Taiwan)

	CHS											SFS
					1
						16
	PSS				2	15						PLLFLT
	LOP				3	14						TVOVCC
	XTAL				4	13						TVOUT
	GND				5	12						GND
	PREEM				6	11						VCCA
	AUDIO				7	10						VIDEO
	SPLFLT				8	9						PSave/LO

Figure 1. MC44BC375U/J/T Pin Connection Diagram

This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. © Motorola, Inc., 2002. All rights reserved.

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Features

1 Features

Channels are selectable using pin Channel Selection (CHS) and tuned by a PLL. They do not require any external tank circuit components thus reducing the sensitivity of the PCB design and the need for external adjustments. The PLL obtains its reference from a 4MHz crystal oscillator.

The sound subcarrier is also generated on-chip without external components. The 4.5MHz or 5.5MHz Sound frequency is selectable using pin Sound Frequency Selection (SFS). The Picture to Sound subcarrier ratio is also selectable by pin Picture to Sound selection (PSS) to either 14dB or 16dB. A Power Save function is selectable via pin Psave/LO which turns off all internal VCOs and mixers and simultaneously switches ON the Logic Output Port (LOP). No external Varicap Diodes/ Inductor nor other tuned components are needed.

The MC44BC375/U/J/T also has the following features:

•Channel selected by CHS pin

•Integrated On-Chip Oscillator - No external tank circuit

•Extremely Low External Components Count

•Adjustable Video Modulation Depth (85% w/o adjustment)

•Peak White Clip

•Programmable Picture/Sound Carrier Ratio (14dB & 16dB) selected by PSS pin

•Integrated On-chip Programmable Sound Subcarrier Oscillator (4.5 & 5.5MHz selected by SFS pin) No external varicaps

•Modulator Standby Mode selected by Psave/LO pin

•Transient Output Inhibit During PLL Lock-up at Power-on

•Logic Output Port selected by Psave/LO pin (Antenna Switch Driver)

•Extremely Robust ESD protection, Minimum 4kV, typical 6kV.

•Available in 80 dBuV RF output level (MC44BC375UA).

2 MC44BC375/U/J/T Technical Data MOTOROLA

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Device Overview

2 Device Overview

Figure 2 shows a simplified block diagram of the MC44BC375U/J/Tdevice.

The MC44BC375U/J/T device has two main sections:

1.A modulator section which accepts audio and video inputs and modulates the VHF carrier.

2.A PLL section to synthesize the UHF/VHF output channel frequency (from an integrated UHF oscillator, divided for VHF output)

The high frequency BICMOS technology permits integration of tank circuit and certain filtering functions.

VIDEO

SPLLFLT

LOP

3

10

8

Peak

Clamp

MODULATOR

White Clip

SECTION

7

TVOVCC

14

Video

AUDIO

Modulator

31.25kHz

Sound

Oscillator

LPF

Sound

and FM

Audio

75Ω

6

PREE

13

PFD

Modulator

Ampli

TVOUT

Prog.

LPF

ALC

Divider

PSS

LPF

11

VCCA

Power

9

save

Psave/

5

GND

LOP

Sound

SFS

Modulator

Test Mode

Snd Freq

Divider

Select

16

- SFS

VHF

Divider

VCO & PLL

SECTION

Channel

1

Select

-

UHF

PLL

CHS

OSC.

PS1/2	2	Prescaler	Prog.	Phase	31.25kHz Ref Divider	4Mhz
Select
- PSS		/ 8	Divider	Comp.	/128	XCO
			CHS

	12		15	4
			PLLFLT		XTAL
	GND

Figure 2. MC44BC375/U/J/T Block Diagram

MOTOROLA MC44BC375/U/J/T Technical Data 3

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Maximum Ratings

3 Maximum Ratings

	Sym	Parameter	Value	Unit
						This device contains protection circuitry to guard
	Vcc	Supply voltage	6	V		against damage due to high static voltage or electric
						fields. However, precautions must be taken to avoid
	Tamin	Minimum operating ambient temperature	–20	oC
						applications of any voltage higher than maximum rated
	Tamax	Maximum operating ambient temperature	85	oC
						voltages to this high impedance circuit. For proper
	Tstgmin	Minimum storage temperature	–65	oC		operation, input and output voltages should be
						constrained to the ranges indicated in the
	Tstgmax	Maximum storage temperature	150	oC
						Recommended Operating Conditions.
	Tj	Junction Temperature	150	°C

Maximum ratings are those values beyond which damage to the device may occur. For functional operation, values should be restricted to the Recommended Operating Condition.

Meets Moisture Sensitivity Level 1, no dry pack required.

4	Thermal Rating
	Sym	Parameter	Value	Unit
	Rthja	Thermal resistance from Junction to Ambient	140	°C/W
5	Electrostatic Discharge
Electrostatic Discharge (ESD) tests are done on all pins.
	Sym	Parameter	Min	Typ	Unit
	ESD	MM (Machine Model) - MIL STD 883C method 3015-7	200	500	V
	ESD	HBM (Human Body Model) - MIL STD 883C method 3015-7	4000	6000	V

4 MC44BC375/U/J/T Technical Data MOTOROLA

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Electrical Characteristics

6Electrical Characteristics

•A = 100% Tested

•B = 100% Correlation tested

•C = Characterized on samples

•D = Design parameter

6.1 Specification Conditions

Unless otherwise stated: Vcc = 5.0V, T amb. = 25°C.Video input 1Vp-p, 10 step greyscale. RF inputs / outputs into 75Ω load. SPECIFICATIONS ONLY VALID FOR ENVELOPE DEMODULATION

Power Supply Parameters	Min	Typ	Max	Unit	Notes	Type
Operating Supply Voltage range	4.5	5.0	5.5	V		B
Total Supply Current	40	47	55	mA	All sections active	A
Total Standby Mode Supply Current	3	5	7	mA	PSave/LO=LO	A

DC Parameter		Min	Typ	Max	Unit	Type
Threshold voltage level on pins CHS, PSS, SFS, PSave/LO			2.1		V	C
Sound Comparator Charge Pump Current: During locking		7	10	12	µA	A
When locked		0.7	1	1.5	µA	A
RF Comparator Charge Pump Current		60	100	150	µA	A
Crystal Oscillator Stability - negative resistance		1	-	-	KΩ	D
Logic Output Port: Saturation voltage @ I=15mA		-	210	300	mV	A
Leakage current		-	-	1	uA	A

MOTOROLA MC44BC375/U/J/T Technical Data 5

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Pin Selection

7 Pin Selection

	Pin Nb	Pin Name	Device	LO (grounded)	HI (Open or +5V)
			MC44BC375U	CH4	CH3
	1	CHS	MC44BC375J	CH2	CH1
			MC44BC375T	CH13	CH13
	2	PSS	MC44BC375U/J/T	14dB	16dB
	9	PSave/LO	MC44BC375U/J/T	Power save Mode	Normal Operation
				LOP pin LO (Low voltage)	LOP pin HI (High impedance
	16	SFS	MC44BC375U/J/T	5.5Mhz	4.5Mhz

By default (open condition), all pins are “HI”.

7.1 Test Modes

	Pin	DC level	Description
		Vcc + 0.3V	Low frequency testing (RF frequency divided by 4 for MC44BC375U/J, and
	CHS		divided by 8 for MC44BC375T)
		Vcc + 1.1V	Base band test mode (DC drive applied to modulators)
	PSS	Vcc + 1Vbe	Transient Output Inhibit Disabled
	SFS	Vcc + 1Vbe	Sound Oscillator OFF
	VIDEO	Vcc + 0.3V	Force UHF and Sound PLL Upper current source
		Vcc + 1.1V	Force UHF and Sound PLL Lower current source

NOTE:

Test modes are intended for manufacturing test purpose only and not to be be used for normal application.

8 High Frequency Characteristics (U Version)

For all the following specifications and unless otherwise stated: Vcc = 5.0V, T amb. = 25°C.Video input 1Vp-p, 10 step greyscale.RF inputs / outputs into 75Ω load.SPECIFICATIONS ONLY VALID FOR ENVELOPE DEMODULATION. Measured on U version on both channel 3 and 4. See Section 11, “Characterization Measurement Conditions” on page 7 for “C” type parameters.

Parameter	Test Conditions	Min	Typ	Max	Unit	Type
TV OUT output level		74	76	79	dBµV	B
Sound subcarrier Harmonics (fp+n*fs)	Ref Picture carrier	-	-73	-65	dBc	C
Second Harmonic of chroma subcarrier.	Using red EBU bar	-	-65	-55	dBc	C
Chroma/Sound intermodulation: fp + (fsnd-fchr)	Using red EBU bar	-	-65	-60	dBc	C
Fo (picture carrier) Harmonics (See Note1)	2nd harmonic		30	42	dBµV	C
	3rd harmonic		66	69	dBµV	C
Out Band (picture carrier) Spurious	1/2*Fo - 1/4*Fo - 3/2*Fo - 3/4*Fo			27	dBµV	C
In band spurious (Fo +/- 5 MHz range)	No video or sound modulation		-70	-62	dBc	C
4 MHz Crystal Spurious (Fo +/- 4 MHz)	No video or sound modulation		-82	-75	dBc	C

Note: 1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors.

6 MC44BC375/U/J/T Technical Data MOTOROLA

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