Freescale Semiconductor, Inc. Advance Information MC44BS374T1/374T1A Rev. 1.2 11/2003 MC44BS374T1 Freescale Semiconductor, Inc... PLL Tuned UHF and VHF Audio/Video High Integration Modulator MC44BS374T1A SO16NB Package Ordering Information Device Temp Range Package MC44BS374T1D,R2 0°C to +70°C SO16NB MC44BS374T1AD,R2 0°C to +70°C SO16NB NOTE: For tape and reel, add R2 suffix. Contents 1Features . . . . . . . . . . . . . . 2 Comparing the MC44BS374T1/374T1A to the MC44BC374T1 . . . . . 2 Pin Descriptions . . . . . . . . 3 Functional Overview . . . . . 4 Maximum Ratings . . . . . . . 5 Thermal Ratings . . . . . . . . . 5 Electrostatic Discharge . . . 5 Electrical Characteristics . 6 I2C Bit Mapping . . . . . . . . . 7 I2C Programming . . . . . . . . 8 Modulator High Frequency Characteristics . . . . . . 10 Video Characteristics . . . 11 Audio Characteristics . . . 13 Characterization Measurement Conditions 14 Modes of Operation . . . . . 20 High Speed I2C Compatible Bus . . . . . . . . . . . . . . . . 24 Pin Circuit Schematics . . 27 Application Diagrams . . . 28 Evaluation Board Schematic and Layout . . . . . . . . . . 29 Packaging Instructions . . 31 Marking Instructions31 The MC44BS374T1 and MC44BS374T1A audio and video modulator are for use in VCRs, set-top boxes, and similar devices. These products are the next generation of the MC44BC374T1 with the following new features: • TV output level 82dBuV typical for the MC44BS374T1A, 75 dBuV for the MC44BS374T1 • 5V and 3.3V compatible I2C bus • Logic Output Port pin (pin 3) available Figure 1 shows the pin connections. GNDD SCL 1 16 SDA 2 15 VCCD LOP XTAL 3 14 PLLFLT 4 13 TVOVCC GND 5 12 TVOUT PREEM 6 11 GND AUDIO 7 10 VCCA SPLFLT 8 9 VIDEO SO16 pin package Figure 1. MC44BS374T1 and MC44BS374T1A Pin Connections This document contains information on a product under development. Freescale 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 Features Freescale Semiconductor, Inc. 1 Features The MC44BS374T1/374T1A is a PAL/NTSC Modulator with integrated VCO. The channel is set by an on-chip high-speed I2C compatible bus receiver. A Phase-Locked Loop ( PLL ) tunes the modulator over the full UHF range. The modulator incorporates a sound subcarrier oscillator and uses a second PLL to derive 4.5, 5.5, 6.0, and 6.5 MHz subcarrier frequencies. These frequencies are selectable by bus. 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 1 KHz audio test signal. Freescale Semiconductor, Inc... The MC44BS374T1/374T1A have the following features: • Integrated on-chip programmable UHF oscillator • No external varicaps diodes / inductor or tuned components • Extremely low external components count • Channel 21-69 UHF operation • VHF range possible by internal dividers (30MHz-450MHz) • Boosted TV output level (82 dBuV typical) for the MC44BS374T1A • TV output level of 75 dBuV typical for the MC44BS374T1 • High speed read and write I2C-bus compatible (800kHz) • I2C-bus 5V and 3.3V compatible • Fixed video modulation depth (82% typical) • Peak White Clip disabled by bus • Programmable picture/sound carrier ratio (12 dB and 16 dB) • Integrated on-chip programmable sound subcarrier oscillator (4.5, 5.5, 6.0 and 6.5 MHz) - No external varicaps • On-chip video test pattern generator with sound test signal (1kHz) • Low-power programmable modulator standby mode • Transient output inhibit during PLL Lock-up at power-ON • Logical Output Port controlled by bus • Start-up on channel ‘71’ (871.25 MHz) • ESD protection, minimum 4 kV 2 Comparing the MC44BS374T1 and MC44BS374T1A to the MC44BC374T1 Compared to the MC44BC374T1 devices, the MC44BS374T1/374T1A has the following improvements: • Higher output level for the MC44BS374T1A (82 dBuV versus 74.5 dBuV) • Higher Video signal to noise (+ 3 dB) for the MC44BS374T1A • I2C-bus 3.3V compatible • Lower power consumption in normal and standby modes (-2 mA) MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. Pin Descriptions • The device can be powered down without holding the I2C lines down • Switch between the two integrated VCO’s controlled directly by the frequency divider (@ 700 MHz) • The external standby pin is no more required as the I2C lines are not hold down when the device is not powered up. • The standby pin is replaced by the LOP Logic Ouput Port pin (pin 3) • Lower RF second harmonic spurious but higher third harmonic spurious. In the application it is easier to filter UHF third harmonics spurious than second harmonics as these frequencies are always out of the UHF band. Unfortunately the second harmonic can fall back into the same UHF band (for instance channel 21 second harmonic). For this reason it is almost impossible to have a good rejection of low UHF second harmonic with an external low pass filter. This is the reason why the design has been optimized for a maximum second harmonic rejection in spite of an increase of the third harmonic. 3 Pin Descriptions Table 1. SO16 Package Pin Descriptions Pin number Pin Name Description 1 SCL I2C clock 2 SDA I2C data 3 LOP Logical output port controlled by I2C bus 4 XTAL Crystal 5 GND Ground 6 PREEMP 7 AUDIO Audio input 8 SPLFLT Sound PLL loop filter 9 VIDEO Video input 10 VCCA Main analog supply voltage 11 GND Analog ground 12 TVOUT 13 TVOVCC 14 PLLFLT 15 VCCD Digital supply voltage 16 GNDD Digital ground Pre-emphasis capacitor TV output signal TV output stage supply voltage RF PLL loop filter MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Functional Overview 4 Functional Overview Figure 2 shows a simplified block diagram of the MC44BS374T1/374T1A device. The MC44BS374T1/374T1A device has three main sections: 1. A high speed I2C-compatible bus section 2. A PLL section to synthesize the UHF / VHF output channel frequency (from an integrated UHF oscillator, divided for VHF output) 3. A modulator section, which accepts audio and video inputs, then uses them to modulate the UHF/VHF carrier An on-chip video test pattern generator with an audio test signal is included. High frequency BiCMOS technology allows integration of the UHF tank circuit and certain filtering functions. LOP 3 VIDEO 9 Peak White Clip I2C BUS TVOVCC 13 TVOUT 12 I2C BUS LPF MODULATOR SECTION Clamp LPF 75Ω SPLLFLT 8 31.25 kHz Video Modulator I2C BUS Sound PFD Sound Oscillator and FM Modulator Prog Divider LPF Audio Amplifier SCL 1 SDA 2 High Speed I2C Bus Receiver 6 PREEM 11 GND 5 VHF Dividers UHF OSC Prescaler/8 AUDIO 10 VCCA RF Sound Modulator BUS SECTION 7 ALC FM I2C BUS Freescale Semiconductor, Inc... The MC44BS374T1/374T1A operates as a multi-standard modulator and can handle the following systems using the same external circuit components: B / G, I, D / K, M / N. Prog Divider VCO and PLL SECTION PLL Phase Comp I2C BUS Ref Divider /128 4MHz XCO 31.25KHz 15 16 14 VCCD GNDD PLLFLT Figure 2. MC44BS374T1/374T1A Simplified Block Diagram MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com 4 XTAL GND Freescale Semiconductor, Inc. Maximum Ratings 5 Maximum Ratings Sym Parameter Vcc Value Unit Supply voltage This device contains protection circuitry to guard 6 V against damage due to high static voltage or electric oC fields. However, precautions must be taken to avoid Tamin Minimum operating ambient temperature 0 Tamax Maximum operating ambient temperature +70 o Tstgmin Minimum storage temperature -65 oC Tstgmax Maximum storage temperature 150 o 150 oC applications of any voltage higher than maximum rated Tj Junction Temperature C C 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. Freescale Semiconductor, Inc... Note: 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. Note: Meets Moisture Sensitivity Level 1, no dry pack required. 6 Thermal Ratings Sym Rthja Parameter Thermal resistance from Junction to Ambient Value Unit 102 °C/W Min Unit 7 Electrostatic Discharge Electrostatic Discharge ( ESD ) tests are done on all pin s Sym Parameter ESD MM (Machine Model) - MIL STD 883C method 3015-7 400 V ESD HBM (Human Body Model) - MIL STD 883C method 3015-7 4000 V MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Electrical Characteristics Freescale Semiconductor, Inc. 8 Electrical Characteristics • A = 100% tested • B = 100% Correlation tested • C = Characterized on samples • D = Design parameter See Characterization conditions section for each C type parameter. 8.1 Operating Conditions Unless otherwise stated: Vcc=5.0 V, Ambient Temperture=25o C, Video Input 1Vp-p, 10-step grayscale. RF output into 75 Ohm load. Freescale Semiconductor, Inc... NOTE: Specifications only valid for envelope demodulation. Table 2. Operating Conditions Parameter Min Typ Max Unit Operating supply voltage range 4.5 5.0 5.5 V Total supply current 42 50 58 mA All sections active A Total standby mode supply current 3 5 7 mA OSC=0, SO=1, ATT = 1 Bus Section active A Test pattern sync pulse width 3 4.7 6.5 µS B Sound comparator charge pump current During locking When locked 7 0.7 10 1 12 1.5 µA µA A A RF comparator charge pump current 60 100 150 µA A Crystal oscillator stability-negative resistance 1 - - KΩ D - 160 - 300 1 mV µA A A Logic Output Port Saturation voltage at I = 2 mA Leakage current Notes Type B MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. I2C Bit Mapping 9 I2C Bit Mapping WRITE MODE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK CA-CHIP ADDRESS 1 1 0 0 1 0 1 0 ACK C1-High Order Bits 1 0 SO LOP PS X3 X2 0 ACK C0-Low Order Bits PWC OSC ATT SFD1 SFD0 0 X5 X4 ACK FM-High Order Bits 0 TPEN N11 N10 N9 N8 N7 N6 ACK FL-Low Order Bits N5 N4 N3 N2 N1 N0 X1 X0 ACK Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK CHIP ADDRESS 1 1 0 0 1 0 1 1 ACK R-Status Byte - - - - - Y2 Y1 OOR - READ MODE Freescale Semiconductor, Inc... Bit Name Description PWC Peak White Clip enable / disable OSC UHF oscillator ON / OFF ATT Modulator output attenuated-sound and video modulators ON / OFF SFD0, 1 Sound subcarrier frequency control bits SO Sound Oscillator ON / OFF LOP Logic Output Port PS TPEN X5…X0 N0…N11 OOR Y1, Y2 Picture-to-sound carrier ratio Test pattern enable-picture and sound Test mode bits-All bits are 0 for normal operation (see Test Mode tables, page 6 & page 7) except “OSC” bit (normal mode is “1”) UHF frequency programming bits, in steps of 250 kHz RF oscillator out-of-frequency range information RF oscillator operating range information MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. I2C Programming 10 I2C Programming Sound UHF SFD 1 SFD 0 Sound Subcarrier Freq (MHz) OSC UHF Oscillator 0 0 4.5 1 Normal operation 0 1 5.5 0 1 0 6.0 UHF oscillator disabled (oscillator and PLL sections bias turned OFF) 1 1 6.5 Freescale Semiconductor, Inc... ATT PS Picture-to-Sound Ratio (dB) 0 12 1 16 SO Sound Oscillator 0 Sound oscillator ON (Normal mode) 1 Sound oscillation disabled (oscillator and PLL section bias turned OFF) Video Modulator Output Attenuation 0 Normal operation 1 Modulator output attenuation (sound and video modulators sections bias turned OFF. Standby Mode OSC SO ATT 0 1 1 Combination of 3-bits Modulator standby mode Logic Output Port PWC Peak White Clip 0 Peak White Clip ON (System B / G) 1 Peak White Clip OFF (System L) TPEN LOP Description 0 Pin 3 is low voltage 1 Pin 3 is high impedance Test Pattern Signal 0 Test pattern signal OFF (normal operation) 1 Test pattern signal ON (picture and sound) WRITE MODE: Test Mode 1 and VHF Range X2 X1 X0 State Description 0 0 0 1.a Normal operation 0 0 1 1.b RF frequency divided for low frequency testing or VHF range: RF / 2 0 1 0 1.c RF / 4 0 1 1 1.d RF / 8 1 0 0 1.e RF / 16 1 0 1 1.f DC drive applied to modulators: Non-inverted video at TVOUT 1 1 0 1.g DC drive applied to modulators: Inverted video at TVOUT 1 1 1 1.h Transient output inhibit disabled (ie speed up mode) During this speed-up test mode, ATT=0 forces sound current source to 1µA, and ATT=1 forces it to 10µA. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. I2C Programming Freescale Semiconductor, Inc... WRITE MODE: Test Mode 2 X5 X4 X3 State Description 0 0 0 2.a Normal operation 0 0 1 2.b Test pattern generator DC verification (Test pattern DC test mode available) 0 1 0 2.c Program divider test (UHF program divider on PLLFILT pin and sound program divider on SPLLFIL pin) 0 1 1 2.d Reference divider test (UHF reference divider on PLLFILT pin) 1 0 0 2.e UHF phase comparison, upper source on PLLFILT pin Sound phase comparison 10 µA upper source on SPLLFIL ( Only valid during transient output inhibit. ) 1 0 1 2.f UHF phase comparison, lower source on PLLFILT pin Sound phase comparison 10 µA lower source on SPLLFIL ( Only valid during transient output inhibit. ) 1 1 0 2.g Sound phase comparison 1 µA upper source on SPLLFIL ( Not valid during transient output inhibit. ) 1 1 1 2.h Sound phase comparison 1 µA lower source on SPLLFIL ( Not valid during transient output inhibit. ) NOTE: Test modes 1 and 2 are intended for manufacturing test purposes only and cannot be used for normal applications, except for VHF range (states 1.b to 1.e). READ MODE OOR Description 0 Normal operation, VCO in range 1 VCO out of range Y1 Description 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=1 Y2 Description 0 High VCO is active 1 Low VCO is active MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, MC44BS374T1A High Frequency Characteristics Inc. 11 MC44BS374T1A High Frequency Characteristics Unless otherwise stated: Vcc=5.0 V, Ambient Temperture=25o C, Video Input 1Vp-p, 10-step grayscale. RF inputs / outputs into 75 Ohm load. NOTE: Specifications only valid for envelope demodulation. Table 3. High Frequency Characteristics Parameter TVOUT output level Test Conditions Min Typ Max Unit Type Output signal from modulator section See Figure 3. See Note 2 79 82 85 dBµV B 460 - 880 MHz A Freescale Semiconductor, Inc... UHF oscillator frequency VHF range From UHF oscillator internally divided 45 - 460 MHz B TVOUT output attenuation During transient output inhibit, or when ATT bit is set to 1. See Figure 3. See Note 2 65 75 - dBc B Sound subcarrier harmonics (Fp + n ∗ Fs) Reference picture carrier. See Note 2 50 63 - dBc C Second harmonic of chroma subcarrier Using red EBU bar. See Note 2 45 70 - dBc C Chroma / Sound intermodulation: Fp + ( Fsnd - Fchr ) Using red EBU bar.See Note 2 65 82 - dBc C Fo (picture carrier) harmonics 2nd harmonic: CH21 3rd harmonic: CH21 Other channels: See Figure 3. See NOTE 1. See Note 2 - 38 58 50 70 dBµV C Out band (picture carrier) spurious 1 / 2 ∗ Fo - 1 / 4 ∗ Fo - 3 / 2 ∗ Fo - 3 / 4 ∗ Fo From 40 MHz to 1 GHz. See Note 2 - - 10 dBµV C In band spurious (Fo @ 5 MHz) No video sound modulation.See Note 2 65 75 - dBc C Note: 1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors. Note: 2: See “Characterization Measurement Conditions” on page 15. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. MC44BS374T1 High Frequency Characteristics 2Fo Harm onics 75 70 70 65 60 55 50 45 Maximum specification 65 Maximum specification dBuV dBuV 3Fo Harm onics 75 60 55 50 45 Typical Typical 40 40 35 471 521 571 621 671 721 771 821 35 471 871 521 Frequency (Mhz) 621 671 721 771 821 871 Frequency (Mhz) TV Output Level TV Output Attenuation 87 85 Maximum specification 80 85 Typical 75 Typical 83 dBc dBuV Freescale Semiconductor, Inc... 571 81 70 65 Minimum specification 79 Minimum specification 60 77 471 521 571 621 671 721 771 821 871 55 471 521 571 621 671 721 771 821 871 Frequency (Mhz) Frequency (Mhz) Figure 3. Typical High Frequency Performance 12 MC44BS374T1 High Frequency Characteristics Unless otherwise stated: Vcc=5.0 V, Ambient Temperture=25o C, Video Input 1Vp-p, 10-step grayscale. RF inputs / outputs into 75 Ohm load. NOTE: Specifications only valid for envelope demodulation. Table 4. High Frequency Characteristics Parameter TVOUT output level for MC44BS374T1A Test Conditions Min Output signal from modulator section See Figure 3. See Note 2 UHF oscillator frequency VHF range From UHF oscillator internally divided TVOUT output attenuation During transient output inhibit, or when ATT bit is set to 1. See Figure 3. See Note 2 Typ Max 75 Unit Type dBµV B 460 - 880 MHz A 45 - 460 MHz B 65 - dBc B MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, MC44BS374T1 High Frequency Characteristics Inc. Table 4. High Frequency Characteristics Test Conditions Min Typ Max Unit Type Sound subcarrier harmonics (Fp + n ∗ Fs) Reference picture carrier. See Note 2 50 63 - dBc C Second harmonic of chroma subcarrier Using red EBU bar. See Note 2 45 70 - dBc C Chroma / Sound intermodulation: Fp + ( Fsnd - Fchr ) Using red EBU bar.See Note 2 65 82 - dBc C Fo (picture carrier) harmonics 2nd harmonic: CH21 3rd harmonic: CH21 Other channels: See Figure 3. See NOTE 1. See Note 2 - 32 52 46 64 dBµV C Out band (picture carrier) spurious 1 / 2 ∗ Fo - 1 / 4 ∗ Fo - 3 / 2 ∗ Fo - 3 / 4 ∗ Fo From 40 MHz to 1 GHz. See Note 2 - - 4 dBµV C In band spurious (Fo @ 5 MHz) No video sound modulation.See Note 2 65 75 - dBc C Note: 1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors. Note: 2: See “Characterization Measurement Conditions” on page 15. 2Fo Harm onics 75 70 70 60 55 50 45 60 55 50 45 Typical Typical 40 40 35 471 Maximum specification 65 Maximum specification dBuV dBuV 3Fo Harm onics 75 65 521 571 621 671 721 771 821 871 35 471 521 Frequency (Mhz) 571 621 671 721 771 821 871 Frequency (Mhz) TV Output Level TV Output Attenuation 87 85 Maximum specification 80 85 Typical 75 83 Typical dBc dBuV Freescale Semiconductor, Inc... Parameter 81 65 Minimum specification 79 77 471 70 Minimum specification 60 521 571 621 671 721 Frequency (Mhz) 771 821 871 55 471 521 571 621 671 721 Frequency (Mhz) Figure 4. Typical High Frequency Performance MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com 771 821 871 Freescale Semiconductor, Inc. Video Characteristics 13 Video Characteristics Unless otherwise stated: Vcc=5.0 V, Ambient Temperature=25o C, Video Input 1Vp-p, 10-step grayscale. RF output into 75 Ohm load. Note: Specifications only valid for envelope demodulation. Table 5. Video Performance Characteristics Parameter Test Conditions Min Typ Max Unit Type -1.5 -0.8 - dB C - - 1.5 Vcvbs D - 0.2 1 µA A 500 - - KΩ A 90.5 94 97.5 % B Using CCIR Rec.567 weighting filter See Figure 5. See Note 2 53 56 - dB C Unweighted. See Note 2 48 53 - Using CCIR Rec.567 weighting filter See Figure 5. See Note 2 53 56 - Unweighted. See Note 2 48 53 - Differential Phase CCIR Test Line 330, See Note 2 -5 - 5 deg C Differential Gain CCIR Test Line 330, See Note 2 -5 - 5 % C Luma / Sync ratio Input ratio 7.0 : 3.0 6.8 / 3.2 7.0 / 3.0 7.2 / 2.8 - B Video modulation depth See Figure 5. See Note 2 76 82 88 % B Video bandwidth Reference 0 dB at 100 kHz, measured at 5 MHz. See Note 2 Video input level 75 Ohm load Video input impedance Peak White Clip Video Modulation depth for video=1.4VCVBS No sound modulation,100% white video Video S / N for the MC44BS374T1A C No sound modulation,100% white video Video S / N for the MC44BS374T1 Note: 2: See “Characterization Measurement Conditions” on page 15. Video Signal to Noise (w ith CCIR Weighting filter) 62 60 Typical 58 dB Freescale Semiconductor, Inc... Video input current 56 54 52 Minimum specification 50 48 471 521 571 621 671 721 771 821 871 Frequency (Mhz) MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com dB C C Audio Characteristics Freescale Semiconductor, Inc. PAL Video Modulation Depth 90 Maximum specification 88 86 % 84 Typical 82 80 78 Minimum specification 76 74 471 521 571 621 671 721 771 821 871 Frequency (Mhz) Freescale Semiconductor, Inc... Figure 5. Typical Video Performance 14 Audio Characteristics Unless otherwise stated: Vcc=5.0 V, Ambient Temperture=25o C, Video Input 1Vp-p, 10-step grayscale. RF inputs / outputs into 75 Ohm load. Note: Specifications only valid for envelope demodulation. Table 6. Audio Performance Characteristics Parameter Picture-to-Sound ratio Test Conditions PS bit set to 0 PS bit set to 1 Min Typ Max Unit Type 9 13 12 16 15 19 dB B Using specific pre-emphasis circuit, audio input level = 205 mVrms - audio frequency = 1 kHz Audio modulation depth FM modulation : Fs = 5.5, 6 or 6.5 MHz 100% modulation = +/-50 kHz FM deviation 76 80 84 % B FM modulation : NTSC Fs = 4.5 MHz 100% modulation = +/-25 kHz FM deviation 76 80 84 % B 45 53 61 KΩ A -2.0 - +2.0 dB C Audio input resistance Audio Frequency response Reference 0 dB at 1 kHz, using specified pre-emphasis circuit, measure from 50 Hz to 15 kHz Depends on loop filter components Audio Distortion FM (THD only) at 1 kHz, 100% modulation ( ± 50 kHz ) No video - 0.2 0.8 % C Audio S / N with Sync Buzz FM Ref 1Khz, 50% modulation (+/-25Khz) EBU color bars Video signal, using CCIR 468.2 weighting filter 50 54 - dB C Note: 2: See “Characterization Measurement Conditions” on page 15. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Characterization Measurement Conditions FM Audio Weighted Signal to Noise 58 56 Typical dB 54 52 50 48 Minimum specification 46 471 521 571 621 671 721 771 821 871 Frequency (Mhz) Freescale Semiconductor, Inc... Figure 6. Typical Audio Performance 15 Characterization Measurement Conditions The following list shows the MC44BS374T1/374T1A default configuration unless otherwise specified. • Peak White Clip enabled • UHF oscillator ON • Sound and video modulators ON • Sound subcarrier frequency = 5.5 MHz • Sound Oscillator ON • Logic Output Port LOW • Picture-to-sound carrier ratio = 12 dB • Test pattern disabled • All test mode bits are ‘0’ • Frequency from channel 21 to 69 RF Inputs / Output into 75ohm Load using a 75 to 50 ohm transformation. Video Input 1Vpp. Audio pre-emphasis circuit enabled. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Characterization Measurement Conditions Semiconductor, Inc. Table 7. Measurement Conditions Device and Signals Set-up Measurement Set-up TVOUT output level Measured picture carrier in dBuV with the HP8596E Spectrum Analyzer using a 75 to 50 ohm transformation, all cables losses and transformation pads having been calibrated. Measurement used as a reference for other tests: TVout_Ref Video: 10 steps grey scale No audio Freescale Semiconductor, Inc... TVOUT output attenuation Measure in dBc picture carrier at ATT=1 with reference to picture carrier at ATT=0 ATT” bit = 1 No Video signal No Audio signal Sound Subcarrier Harmonics Video: 10 steps grey scale No Audio signal Measure in dBc second and third sound harmonics levels in reference to picture carrier (TVout_Ref). Picture carrier Sound carrier Sound 2nd harm Sound 3rd harm Fo +5.5MHz +11MHz +16.5MHz Second Harmonics of Chroma subcarrier No audio Video: a 700m Vpp 100 kHz sinusoidal signal is inserted on the black level of active video area. Frequency Frequency 100kHz 100Khz 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. Picture carrier 700mVpkpk Chroma carrier 700mV pk-pk Sound carrier Chroma 2nd Harmonic Fo +4.43MHz +5.5MHz MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com +8.86MHz Freescale Semiconductor, Inc. Characterization Measurement Conditions Table 7. Measurement Conditions Device and Signals Set-up Measurement Set-up Chroma/Sound Intermodulation No audio signal Video: 700m Vpp 100 kHz sinusoidal signal inserted on the black level of active video area.This is generated using a Rohde & Schwarz Video Generator SAF and inserting the required frequency from a RF Signal generator. Frequency Frequency 100kHz 4.43 MHz Measure in dBc, in reference to picture carrier (TVout_Ref), intermodulation product at channel frequency plus the sound carrier frequency (+5,5 MHz) minus the chroma frequency (-4,43 MHz), resulting in the following spectrum. Intermodulation product is at the channel frequency +1,07 MHz. Picture carrier 700mVpp Chroma/Sound Intermod. 700mV pk-pk Freescale Semiconductor, Inc... Sound carrier Chroma carrier Fo +4.43MHz +5.5MHz +1.07MHz Picture Carrier Harmonics No Video signal No Audio signal Measure in dBc, in reference to picture carrier (TVout_Ref), second and third harmonic of channel frequency, resulting in the following spectrum. Picture carrier 3rd harmonic 2nd harmonic Fo 2Fo 3Fo Out of Band Spurious No Video signal No Audio signal Measure in dBuV spurious levels at 0.25, 0.5, 0.75 and 1.5 times channel frequency, resulting in the following spectrum Measure from 40MHz to 1GHz. Picture carrier Spurious Fo/4 Fo/2 Fo*3/4 Fo Fo*3/2 In Band Spurious No Video signal No Audio signal Measure in dBc, in reference to picture carrier (TVout_Ref), spurious levels falling into video bandwidth starting from +/-100 KHz from the picture carrier up to +/-5MHz. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Characterization Measurement Conditions Semiconductor, Inc. Table 7. Measurement Conditions Device and Signals Set-up Measurement Set-up Video Bandwidth No audio Video: 600mVpp sinusoidal signal inserted on the black level of active video area. The Video signal is demodulated on the spectrum analyzer, and the peak level of the 100KHz signal is measured as a reference. The frequency is then swept from 100KHz to 5MHz, and then the difference in dB from the 100KHz reference level is measured. Freescale Semiconductor, Inc... Weighted Video Signal to Noise Video: 100% White video signal - 1Vpkpk. No Audio signal This is measured using a Rohde & Schwarz AMFS UHF Demodulator in B/G (using a CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. The Video Analyzer measures the ratio between the amplitude of the active area of the video signal (700mV) and the noise level in Vrms on a video black level which is show below. VideoS/N is calculated as 20 x log(700 /N) in dB. N noise level in Vrms Unweighted Video Signal to Noise Same as above with CCIR filter disabled. Same as above. Video Differential Phase Video: 5 step Grey Scale- 1Vpk-pk. No Audio signal This is measured using a Rohde & Schwarz AMFS UHF Demodulator in B/G (using a CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap, and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. On line CCIR 330, the video analyzer DP measure consists of calculating the difference of the Chroma phase at the black level and the different chroma subcarrier phase angles at each step of the greyscale. The largest positive or negative difference indicates the distortion. the largest positive or negative difference DIFF PHASE = the phase at position 0 * 100% The video analyzer method takes the worst step from the first 4 steps. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Characterization Measurement Conditions Table 7. Measurement Conditions Device and Signals Set-up Measurement Set-up Video Differential Gain Freescale Semiconductor, Inc... Video: 5 step Grey Scale- 1Vpk-pk. No Audio signal This is measured using a Rohde & Schwarz AMFS UHF Demodulator in B/G (using a CCIR Rec. 567 weighting network, 100kHz to 5MHz band with sound trap and envelope detection, and a Rohde & Schwarz UAF Video Analyzer. 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. The largest positive or negative difference indicates the distortion. 0 1 3 2 5 4 5-step Greyscale with Chroma subcarrier superimposed (not to scale), line CCIR 330. the largest positive or negative difference DIFF GAIN = the amplitude at position 0 * 100% The video analyzer method takes the worst step from the first 4 steps. Video Modulation Depth No Audio signal Video: 10 step grey scale This is measured using a HP8596E Spectrum Analyzer with a TV Trigger option, allowing demodulation and triggering on any specified TV Line. The analyzer is centred on the maximum peak of the Video signal and reduced to zero Hertz span in Linear mode to demodulate the Video carrier. A ( 6-10mV) A(mV) B(mV) B (0.6 - 3mV) TV Line Demodulated by Spectrum Analyzer-BG standard The Modulation Depth is calculated as (A-B)/A x 100 in% Picture to Sound ratio No Video signal No Audio Signal PS” bit set to 0 and 1 Measure in dBc sound carrier in reference to picture carrier (TVout_Ref) for PS” bit=0 (PS=12dB typical) and for PS” bit=1 (PS=16dB), Picture carrier Sound carrier Fo +5.5Mhz MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Characterization Measurement Conditions Semiconductor, Inc. Table 7. Measurement Conditions Device and Signals Set-up Measurement Set-up Audio Modulation Depth 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 The audio signal 205mV at 1kHz is supplied by the Audio Analyzer, and the FM demodulated signal deviation is indicated on the Demodulator in Khz peak. This value is then converted in% of FM deviation, based on specified standards. Freescale Semiconductor, Inc... Audio Frequency response Video Black Level Audio signal: 50Hz to 15KHz, 100mVrms This is measured using a Rohde & Schwarz AMFS Demodulator in B/G and a HP8903A. The audio signal 1KHz 100mVrms is supplied by the Audio Analyzer, demodulated by the Demodulator and the audio analyzer measures the AC amplitude of this demodulated audio signal: this value is taken as a reference (0dB). The audio signal is then swept from 50Hz to 15KHz, and demodulated AC amplitude is measured in dB relative to the 1KHz reference. Audio pre-emphasis and de-emphasis circuits are engaged, all audio analyzer filters are switched OFF. Audio Distortion FM Audio: 1Khz, adjustable level Video Black Level This is measured using a Rohde & Schwarz AMFS UHF Demodulator in B/G and a HP8903A Audio Analyzer at 1kHz. The output level of the Audio analyzer is varied to obtain a deviation of 50kHz indicated on the Demodulator. The input arms detector of the Audio Analyzer converts the ac level of the combined signal + noise + distortion to dc. It then removes the fundamental signal (1kHz) after having measured the frequency. The output rms detector converts the residual noise + distortion to dc. The dc voltmeter measures both dc signals and calculates the ratio in% of the two signals. ADist = ( Distorsion + Noise ) ⁄ ( Distorsion + Noise + Signal ) Audio Signal to Noise Audio: 1Khz, adjustable level Video: EBU Color Bars This is measured using a Rohde & 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. The Audio Analyzer alternately turns ON and OFF it's internal audio source to make a measure of the Audio signal plus noise and then another measure of only the noise. The measurement is made using the internal CCIR468-2 Filter of the Audio Analyzer together with the internal 30+/-2kHz (60dB/decade) Lowpass filters. The AMFS demodulator uses a quasi-parallel demodulation as is the case in a normal TV set. In this mode the Nyquist filter is bypassed and the video carrier is used without added delay to effectuate intercarrier conversion. In this mode the phase noise information fully cancels out and the true S/N can be measured. ASN ( dB ) = 20 × log ( Signal + Noise ) ⁄ ( Noise ) MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Modes of Operation 16 Modes of Operation 16.1 Power ON Settings At power-ON, the MC44BS374T1/374T1A is configured as follows: Table 8. Power ON Settings Freescale Semiconductor, Inc... WRITE MODE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK C1-High Order Bits 1 0 0 0 0 0 0 0 ACK C0-Low Order Bits 0 1 0 0 1 0 0 0 ACK FM-High Order Bits 0 0 N11 N10 N9 N8 N7 N6 ACK FL-Low Order Bits N5 N4 N3 N2 N1 N0 0 0 ACK Note: N0 to N11 are set to have UHF oscillator on channel 71 ( 871.25 MHz ). Note: Peak White Clip is ON. Note: Sound frequency is 5.5 MHz. Note: Logic Output Port is low voltage Note: Picture to sound ratio is 12 dB. 16.2 Power Supply The three device Vccs (pins 10, 13 and 15) must be applied at the same time to ensure all internal blocks are correctly biased. Do not bias any other pin before Vcc is applied to the MC44BS374T1/374T1A. When all Vccs are switched to 0V, SDA and SCL pins are high impedance. 16.3 Standby modes During standby mode, the modulator is switched to low power consumption. That is, the sound oscillator, UHF oscillator, and the video and sound modulator section’s bias are internally turned OFF. The I2C bus section remains active. The MC44BS374T1/374T1A can be set to standby mode with a combination of 3 bits: OSC=0, SO=1 and ATT=1 16.4 Transient Output Inhibit To minimize the risk of interference to other channels while the UHF PLL is acquiring a lock on the desired frequency, the Sound and Video modulators are turned OFF during a time out period for each of the following two cases: • Power-ON from zero ( i.e., all Vcc is switched from 0 V to 5 V ). • UHF oscillator power-ON from OFF state ( i.e., OSC bit is switched from 1 to 0 ) There is a time-out of 263ms until the output is enabled. This lets the UHF PLL settle to its programmed frequency. During the 263ms time-out, the sound PLL current source is set to 10 µA typical to speed up the locking time. After the 263ms time-out, the current source is switched to 1 µA. Use care when selecting loop filter components, to ensure the loop transient does not exceed this delay. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Modes of Operation Freescale Semiconductor, Inc. For test purposes, it is possible to disable the 263ms delay using Test Mode 1-State 1.h (this is called speed up mode). 16.5 UHF Oscillator-VHF range The UHF oscillator is fully integrated and does not require any external components. For low frequency testing or VHF range operation ( test mode 1, states 1.b to 1.e ), the UHF oscillator can be internally divided by: 2, 4, 8, or 16. 16.6 UHF PLL Section Freescale Semiconductor, Inc... The reference divider is a fixed divide-by-128, resulting in a reference frequency of 31.25 KHz with a 4.0 MHz crystal. The prescaler is a fixed divide-by-8 and is permanently engaged. The programmable divider division-ratio is controlled by the state of control bits N0 to N11. The divider-ratio N for a desired frequency F (in MHz) is given by: F 128 N = --- × --------8 4 with: N = 2048 × N11 + 1024 × N10 + …… + 4 × N2 + 2 × N1 + N0 NOTE: Programming a division-ratio N=0 is not allowed. 16.7 Logic Output Port (LOP) The LOP pin controls any logic function. The primary applications for the LOP are to control an external attenuator or an external switch, between the antenna input and TV output. A typical attenuator application with PIN diode is shown in Figure 7. The LOP pin switches the PIN attenuator depending on the signal strength of the Antenna Input. This reduces the risks of intermodulation in certain areas. The LOP can also be used as an OFF position bypass switch or for other logic functions in the application. Vcc Antenna Input TV Out LOP pin Figure 7. Typical Attenuator Application with Pin Diode MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Modes of Operation 16.8 Video Section - Peak White Clip The MC44BS374T1/374T1A requires the following for proper video functionality: • A composite video input with negative going sync pulses • A nominal level of 1 Vpp This signal is AC-coupled to the video input where the sync tip level is clamped. The video signal is then passed to a Peak White Clip (PWC) circuit. The PWC circuit function soft-clips the top of the video waveform, if the sync tip amplitude to peak white clip goes too high. This avoids carrier over-modulation by the video. Clipping can be disabled by software. Freescale Semiconductor, Inc... 16.9 Test Pattern Generator The I2C generates a simple test pattern, which can be switched under bus control to permit a TV receiver to easily tune to the modulator output. The pattern consists of two white vertical bars on a black background and a 976 Hz audio test signal. TE2 7/10 3/10 TE1 0 10 20 24 2830 40 44 50 60 64 TIME IN µS. Figure 8. Test Pattern Generator MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Modes of Operation Freescale Semiconductor, Inc. 16.10 Sound Section The oscillator is fully integrated and does not require any external components. An internal low-pass filter and matched structure provide very low harmonics levels. The sound modulator system consists of an FM modulator incorporating the sound subcarrier oscillator. The audio input signal is AC-coupled into the amplifier, which then drives the modulator. The audio preemphasis circuit is a high-pass filter with an external capacitor and an internal resistor ( 106 K Ohms typical ). The recommended capacitor value for BG standard (with a time constant of 50 µS) is 470 pF. Freescale Semiconductor, Inc... The recommended capacitor value for M/N standard (with a time constant of 75 µS) is 750 pF. To increase the audio bandwidth at low frequencies it is possible to change the sound PLL loop filter. The recommended values are 220 nF and 22 nF. To increase the bandwidth at low frequencies (lower than 50 Hz) it is possible to use larger loop filter capacitor values. This will give a lower cut off frequency. In this case it is necessary to calculate the new values of the loop filter according to the required Q factor and loop bandwidth. This is described in the following figure: Sound PLL loop filter calculation Loop filter equation : ωo = 1 Kpd * Kosc , Q= , with : N * C1 R * C1 * ω o ωo = 3dB cut off frequency Kpd = 1uA : Phase detector current Kosc = 5MHz/V : sound oscillator slope (in fact Kosc=40MHz/prescaler divider =8) This gives 5 MHz/V N = sound divider ratio Q = quality factor C2, added to minimize glitches, is usually set to one tenth the size of C1. Example : Fref=31.25KHz Æ N=5.5MHz / 31.25KHz = 176 Assuming C1= 220 nF, then ωo = 360 rad, and fo= 57Hz Q depends on the desired frequency response ; Choosing Q = 0.7 as a starting point, then R= 18 kΩ. The resistance acts directly on the factor quality and can be adjusted to create peaking on the low frequency range. It is recommended to adjust the value of R experimentally depending on the application and requirements. In the proposed application schematic a value of 15 kΩ has been chosen. Figure 9. Sound PLL Loop Filter Calculation MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. High Speed I2C Compatible Bus 17 High Speed I2C Compatible Bus 17.1 Specification Conditions Unless otherwise specified, Vcc = 5.0 V, TA = 25 oC. Electrical Characteristics Symbol Freescale Semiconductor, Inc... SDA / SCL output current at 0 V Min Typ Max Unit Type -5 -2 - µA A SDA / SCL low input level VIL - - 1.5 V B SDA / SCL high input level VIH 2.1 - - V B SDA/SCL input current for input level from 0.4V to 0.3Vcc -5 - 5 µA C SDA/SCL input level 0 - Vcc+0,3 V D SDA/SCL capacitance - - 10 pF C ACK low output level (3 mA sinking current) - - 0.3 V C ACK low output level (9 mA sinking current) - - 0.8 V C Min Typ Max Unit Type 0 - 800 kHz C Tbuf 200 - - ns C Setup time for start condition Tsu;sta 500 - - ns C Hold time for start condition Thd;sta 500 - - ns C Data setup time Tsu;dat 0 - - ns C Data hold time Thd;dat 0 - - ns C Setup time for stop condition Tsu;sto 500 - - ns C Hold time for stop condition Thd;sto 500 - - ns C Acknowledge propagation delay Tack;low - - 300 ns C SDA fall time at 3ma sink I and 130pF load - - 50 ns C SDA fall time at 3ma sink I and 400pF load - - 80 ns C SDA rise time SCL fall/rise time - - 300 300 ns ns C C Pulse width of spikes suppressed by the input filter - - 50 ns C Timing Characteristics Symbol Bus clock frequency Bus free time between stop and start 17.2 Timing Definitions Tbuf Stop ACK Start Chip Address SSDA SSCL Tsu;sto Thd;sta ... ... Tsu;dat Thd;dat Start Stop SDA SDA SCL SCL Tack:low Tsu;sta Figure 10. SSDA/SSCL Timing MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Thd;sto Freescale High Speed I2C Compatible Bus Semiconductor, Inc. 17.3 Level Definitions SDA/SCL high and low levels are designed to be compatible with 0-5V and 0-3.3V SDA / SCL signals. SDA ... Vcc Vih dead band Vil 0V Figure 11. SDA/SCL Levels 17.4 High Speed I2C Compatible Bus Format Freescale Semiconductor, Inc... SCL 1 STA 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Chip Address ($CA) First Data Byte (C1 or FM) ACK 44 45 Stop Data ACK ACK SDA Figure 12. I2C Bus Timing 17.5 I2C Write Mode Format and Bus Receiver It The bus receiver operates the I2C compatible data format. The chip address ( I2C bus ) is as follows. Table 9. Chip Address (I2C Bus) 1 1 0 0 1 0 1 0 (ACK) = $CA ( hex ) in write mode In write mode, each ninth data bit ( bits 9, 18, 27, 36, and 45 ) is an acknowledge bit (ACK) during which the MCU sends a logic 1 and the Modulator circuit answers on the data line by pulling it low. Besides the chip address, the circuit needs two or four data bytes for operation. The following sequences of data bytes are the permitted incoming information: Table 10. Permitted Data Bytes (Incoming Information) Example 1 STA CA C1 C0 STO Example 2 STA CA FM FL STO Example 3 STA CA C1 C0 FM FL STO Example 4 STA CA FM FL C1 C0 STO Note: STA = Start condition CA = Chip Address MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. High Speed I2C Compatible Bus Table 10. Permitted Data Bytes (Incoming Information) FM = Frequency information, high order bits FL = Frequency information, low order bits C1 = Control information, high order bits CO = Control information, low order bits STO = Stop condition Freescale Semiconductor, Inc... After the chip address, two or four data bytes may be received. • 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. The first and third data bytes contain a function bit, which lets the IC distinguish between frequency information and control information. If the function bit is a logic 1, the two following bytes contain control information. The first data byte after the chip address, may be byte CO or byte FM. The two bytes of frequency information are preceded by a logic 0. 17.6 I2C Read Mode Format The chip address ( I2C ) is: Table 11. Chip Address (I2C Read Mode) 1 1 0 0 1 0 1 1 (ACK) = $CB ( hex ) in read mode 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. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Pin Circuit Schematics 18 Pin Circuit Schematics VCCD VCCD VCC VCC 25K 50 SDA 1/2 VCCD 25K SCL 1/2 VCCD ACK VCC VCC LOP 5K XTAL Freescale Semiconductor, Inc... 1.5K VCC VCC 50k PREM AUDIO IN 10k audio 11.8k VCC VCC TV OUT VCC 5K VCC SPLLFLT 75 TVOVCC VCC VCC VCC 100 PLLFLT 10K 2K 500 10K Figure 13. Pin Circuit Schematics MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com VIDEO Freescale Semiconductor, Inc. Application Diagram 19 Application Diagram This document contains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice. Vcc SDA SCL O O O Note 2 1 SCL 2 SDA O LOP Cx Note 1 4 XTAL 5 GND Pre-em 6 470pF PREEM 7 AUDIO 8 SPLLFLT 220nF 100nF 22nF O Freescale Semiconductor, Inc... 4MHz 3 LOP Audio 15K 16 2.2k 22nF GNDD 15 VCCD 14 Note 3 PLLFLT 13 TVOVCC 12 47nF 10nF O TVOUT 1nF TVOUT 11 GND 10 Note 3 10nF VCCA 9 VIDEO 10nF 100nF 75 O Video O Vcc Figure 14. Proposed Application Schematic Note: 1. Cx value depends on crystal characteristics. Cx = 27 pF on Motorola application board. Note: 2. RF PLL Loop Filter components at pin 14 must be as close as possible to Vccd at pin 15. Note: 3. Supply voltage decoupling capacitors must be as close as possible to ground. MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Evaluation Board Layout and Schematic Semiconductor, Inc. 20 Evaluation Board Layout and Schematic Freescale Semiconductor, Inc... 20.1 Evaluation Board Layout Figure 15. Evaluation Board PCB Layout MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Evaluation Inc. Board Layout and Schematic Freescale Semiconductor, Inc... 20.2 Evaluation Board Schematic Figure 16. Evaluation Board Schematic MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Packaging Instructions Freescale Semiconductor, Inc. 21 Packaging Instructions Tape and reel packaging per 12MRH00360A issue Y with the following conditions applicable for Dual InLine SOP (SOIC) package. Freescale Semiconductor, Inc... Figure 17. Dual In-line SOP (SOIC) Component Orientation: Arrange parts with the pin 1 side closest to the tape's round sprocket holes on the tape's trailing edge. 22 Marking Instructions Bar marked part way across Pin 1 end of package. Bar width 10 to 20 mils, length to be at least four times Bar width. Bar placement may extend across chamfer and dimple areas. MCBS374T1 AWLYWW Pin 1 Dot or Dimple • • 1st line: MCBS374T1 (Part number coded on 9 digits) 2nd line: Assembly site code AW (2 digits) followed by the wafer lot code L (1 digit), year Y (1 digit) and work week WW (2 digits) Bar marked part way across Pin 1 end of package. Bar width 10 to 20 mils, length to be at least four times Bar width. Bar placement may extend across chamfer and dimple areas. MCBS374T1A AWLYWW Pin 1 Dot or Dimple • • 1st line: MCBS374T1A (Part number coded on 10 digits) 2nd line: Assembly site code AW (2 digits) followed by the wafer lot code L (1 digit), year Y (1 digit) and work week WW (2 digits) MC44BS374T1/374T1A Advance Information For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... 23 Case Outline Millimeters Note: 1. Dimensions and Tolerances per ASME Y14.5M, 1994. Inches Dim Min Max Min Max Note: Note: 3. Dimension D and E1 do not include mold protrusion. A 1.35 1.75 0.054 0.068 A1 0.1 0.25 0.004 0.009 D 9.8 10 0.385 0.393 E 5.8 6.2 0.229 0.244 E1 3.8 4 0.150 0.157 b 0.35 0.49 0.014 0.019 c 0.19 0.25 0.008 0.009 e 1.27 BSC Note: side. 2. Controlling dimension: Millimeters. 4. Maximum mold protrusion 0.15 ( 0.006 ) per Note: 5. Dimension b does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.127 ( 0.005 ) total in excess of the b dimension at maximum material condition. 0.050 BSC L 0.4 1.25 0.016 0.049 h 0.25 0.5 0.010 0.019 Q 0o 7o 0o 7o Figure 18. SO16NB package For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. Home Page: www.freescale.com email: [email protected] USA/Europe or Locations Not Listed: Freescale Semiconductor Technical Information Center, CH370 1300 N. Alma School Road Chandler, Arizona 85224 (800) 521-6274 480-768-2130 [email protected] Europe, Middle East, and Africa: Freescale Halbleiter Deutschland GmbH Technical Information Center Schatzbogen 7 81829 Muenchen, Germany +44 1296 380 456 (English) +46 8 52200080 (English) +49 89 92103 559 (German) +33 1 69 35 48 48 (French) [email protected] Japan: Freescale Semiconductor Japan Ltd. Headquarters ARCO Tower 15F 1-8-1, Shimo-Meguro, Meguro-ku Tokyo 153-0064, Japan 0120 191014 +81 2666 8080 [email protected] Asia/Pacific: Freescale Semiconductor Hong Kong Ltd. Technical Information Center 2 Dai King Street Tai Po Industrial Estate, Tai Po, N.T., Hong Kong +800 2666 8080 [email protected] For Literature Requests Only: Freescale Semiconductor Literature Distribution Center P.O. Box 5405 Denver, Colorado 80217 (800) 441-2447 303-675-2140 Fax: 303-675-2150 LDCForFreescaleSemiconductor @hibbertgroup.com RoHS-compliant and/or Pb- free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb- free counterparts. For further information, see http://www.freescale.com or contact your Freescale sales representative. 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